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-rw-r--r--Documentation/devicetree/bindings/timer/faraday,fttmr010.txt6
-rw-r--r--Documentation/devicetree/bindings/timer/moxa,moxart-timer.txt19
-rw-r--r--arch/arc/include/asm/Kbuild1
-rw-r--r--arch/arc/include/uapi/asm/Kbuild2
-rw-r--r--arch/arc/kernel/setup.c2
-rw-r--r--arch/arm/Kconfig10
-rw-r--r--arch/arm/boot/dts/aspeed-g4.dtsi1
-rw-r--r--arch/arm/boot/dts/aspeed-g5.dtsi1
-rw-r--r--arch/arm/include/asm/Kbuild1
-rw-r--r--arch/arm/include/uapi/asm/Kbuild2
-rw-r--r--arch/arm/kernel/smp_twd.c6
-rw-r--r--arch/arm/kernel/time.c2
-rw-r--r--arch/arm/mach-aspeed/Kconfig2
-rw-r--r--arch/arm/mach-bcm/Kconfig2
-rw-r--r--arch/arm/mach-clps711x/Kconfig2
-rw-r--r--arch/arm/mach-mediatek/mediatek.c2
-rw-r--r--arch/arm/mach-moxart/Kconfig2
-rw-r--r--arch/arm/mach-omap2/timer.c10
-rw-r--r--arch/arm/mach-rockchip/rockchip.c2
-rw-r--r--arch/arm/mach-s3c24xx/Kconfig2
-rw-r--r--arch/arm/mach-s3c64xx/Kconfig2
-rw-r--r--arch/arm/mach-shmobile/setup-rcar-gen2.c2
-rw-r--r--arch/arm/mach-spear/spear13xx.c2
-rw-r--r--arch/arm/mach-sunxi/sunxi.c2
-rw-r--r--arch/arm/mach-u300/core.c2
-rw-r--r--arch/arm/mach-zynq/common.c2
-rw-r--r--arch/arm64/Kconfig.platforms4
-rw-r--r--arch/arm64/kernel/time.c2
-rw-r--r--arch/arm64/kernel/vdso.c6
-rw-r--r--arch/c6x/include/asm/Kbuild1
-rw-r--r--arch/c6x/include/uapi/asm/Kbuild1
-rw-r--r--arch/cris/include/asm/Kbuild1
-rw-r--r--arch/cris/include/uapi/asm/Kbuild2
-rw-r--r--arch/h8300/Kconfig2
-rw-r--r--arch/h8300/include/asm/Kbuild1
-rw-r--r--arch/h8300/include/uapi/asm/Kbuild2
-rw-r--r--arch/h8300/kernel/setup.c2
-rw-r--r--arch/hexagon/include/asm/Kbuild1
-rw-r--r--arch/hexagon/include/uapi/asm/Kbuild2
-rw-r--r--arch/ia64/include/asm/siginfo.h23
-rw-r--r--arch/ia64/include/uapi/asm/siginfo.h1
-rw-r--r--arch/m32r/include/uapi/asm/Kbuild2
-rw-r--r--arch/m32r/include/uapi/asm/siginfo.h6
-rw-r--r--arch/m68k/include/asm/Kbuild1
-rw-r--r--arch/m68k/include/uapi/asm/Kbuild1
-rw-r--r--arch/microblaze/Kconfig2
-rw-r--r--arch/microblaze/include/uapi/asm/Kbuild1
-rw-r--r--arch/microblaze/kernel/setup.c2
-rw-r--r--arch/microblaze/kernel/timer.c2
-rw-r--r--arch/mips/generic/init.c2
-rw-r--r--arch/mips/mti-malta/malta-time.c2
-rw-r--r--arch/mips/pic32/pic32mzda/time.c2
-rw-r--r--arch/mips/pistachio/time.c2
-rw-r--r--arch/mips/ralink/Kconfig2
-rw-r--r--arch/mips/ralink/cevt-rt3352.c2
-rw-r--r--arch/mips/ralink/clk.c2
-rw-r--r--arch/mips/ralink/timer-gic.c2
-rw-r--r--arch/mips/xilfpga/time.c2
-rw-r--r--arch/mn10300/include/uapi/asm/Kbuild2
-rw-r--r--arch/mn10300/include/uapi/asm/siginfo.h1
-rw-r--r--arch/nios2/Kconfig2
-rw-r--r--arch/nios2/include/asm/Kbuild1
-rw-r--r--arch/nios2/include/uapi/asm/Kbuild1
-rw-r--r--arch/nios2/kernel/time.c4
-rw-r--r--arch/openrisc/include/asm/Kbuild1
-rw-r--r--arch/openrisc/include/uapi/asm/Kbuild2
-rw-r--r--arch/score/include/uapi/asm/Kbuild2
-rw-r--r--arch/score/include/uapi/asm/siginfo.h6
-rw-r--r--arch/sh/boards/Kconfig2
-rw-r--r--arch/sh/boards/of-generic.c2
-rw-r--r--arch/sh/include/asm/Kbuild1
-rw-r--r--arch/sh/include/uapi/asm/Kbuild2
-rw-r--r--arch/sparc/include/asm/siginfo.h13
-rw-r--r--arch/unicore32/include/asm/Kbuild1
-rw-r--r--arch/unicore32/include/uapi/asm/Kbuild1
-rw-r--r--arch/xtensa/include/asm/Kbuild1
-rw-r--r--arch/xtensa/include/uapi/asm/Kbuild1
-rw-r--r--arch/xtensa/kernel/time.c2
-rw-r--r--drivers/char/Kconfig9
-rw-r--r--drivers/char/Makefile1
-rw-r--r--drivers/char/mmtimer.c858
-rw-r--r--drivers/clocksource/Kconfig80
-rw-r--r--drivers/clocksource/Makefile5
-rw-r--r--drivers/clocksource/arc_timer.c6
-rw-r--r--drivers/clocksource/arm_arch_timer.c8
-rw-r--r--drivers/clocksource/arm_global_timer.c2
-rw-r--r--drivers/clocksource/armv7m_systick.c2
-rw-r--r--drivers/clocksource/asm9260_timer.c2
-rw-r--r--drivers/clocksource/bcm2835_timer.c2
-rw-r--r--drivers/clocksource/bcm_kona_timer.c4
-rw-r--r--drivers/clocksource/cadence_ttc_timer.c2
-rw-r--r--drivers/clocksource/clkevt-probe.c56
-rw-r--r--drivers/clocksource/clksrc-dbx500-prcmu.c2
-rw-r--r--drivers/clocksource/clksrc_st_lpc.c2
-rw-r--r--drivers/clocksource/clps711x-timer.c4
-rw-r--r--drivers/clocksource/dw_apb_timer_of.c8
-rw-r--r--drivers/clocksource/exynos_mct.c4
-rw-r--r--drivers/clocksource/fsl_ftm_timer.c10
-rw-r--r--drivers/clocksource/h8300_timer16.c2
-rw-r--r--drivers/clocksource/h8300_timer8.c2
-rw-r--r--drivers/clocksource/h8300_tpu.c2
-rw-r--r--drivers/clocksource/jcore-pit.c2
-rw-r--r--drivers/clocksource/meson6_timer.c2
-rw-r--r--drivers/clocksource/mips-gic-timer.c7
-rw-r--r--drivers/clocksource/moxart_timer.c256
-rw-r--r--drivers/clocksource/mps2-timer.c2
-rw-r--r--drivers/clocksource/mtk_timer.c2
-rw-r--r--drivers/clocksource/mxs_timer.c2
-rw-r--r--drivers/clocksource/nomadik-mtu.c2
-rw-r--r--drivers/clocksource/pxa_timer.c2
-rw-r--r--drivers/clocksource/qcom-timer.c4
-rw-r--r--drivers/clocksource/renesas-ostm.c2
-rw-r--r--drivers/clocksource/rockchip_timer.c4
-rw-r--r--drivers/clocksource/samsung_pwm_timer.c10
-rw-r--r--drivers/clocksource/sun4i_timer.c173
-rw-r--r--drivers/clocksource/tango_xtal.c2
-rw-r--r--drivers/clocksource/tcb_clksrc.c109
-rw-r--r--drivers/clocksource/tegra20_timer.c4
-rw-r--r--drivers/clocksource/time-armada-370-xp.c6
-rw-r--r--drivers/clocksource/time-efm32.c4
-rw-r--r--drivers/clocksource/time-lpc32xx.c2
-rw-r--r--drivers/clocksource/time-orion.c2
-rw-r--r--drivers/clocksource/time-pistachio.c2
-rw-r--r--drivers/clocksource/timer-atlas7.c2
-rw-r--r--drivers/clocksource/timer-atmel-pit.c2
-rw-r--r--drivers/clocksource/timer-atmel-st.c2
-rw-r--r--drivers/clocksource/timer-digicolor.c2
-rw-r--r--drivers/clocksource/timer-fttmr010.c476
-rw-r--r--drivers/clocksource/timer-imx-gpt.c24
-rw-r--r--drivers/clocksource/timer-integrator-ap.c2
-rw-r--r--drivers/clocksource/timer-keystone.c2
-rw-r--r--drivers/clocksource/timer-nps.c6
-rw-r--r--drivers/clocksource/timer-of.c171
-rw-r--r--drivers/clocksource/timer-of.h69
-rw-r--r--drivers/clocksource/timer-oxnas-rps.c4
-rw-r--r--drivers/clocksource/timer-prima2.c2
-rw-r--r--drivers/clocksource/timer-probe.c (renamed from drivers/clocksource/clksrc-probe.c)20
-rw-r--r--drivers/clocksource/timer-sp804.c4
-rw-r--r--drivers/clocksource/timer-stm32.c2
-rw-r--r--drivers/clocksource/timer-sun5i.c4
-rw-r--r--drivers/clocksource/timer-ti-32k.c2
-rw-r--r--drivers/clocksource/timer-u300.c2
-rw-r--r--drivers/clocksource/versatile.c4
-rw-r--r--drivers/clocksource/vf_pit_timer.c2
-rw-r--r--drivers/clocksource/vt8500_timer.c2
-rw-r--r--drivers/clocksource/zevio-timer.c2
-rw-r--r--include/asm-generic/siginfo.h22
-rw-r--r--include/asm-generic/vmlinux.lds.h9
-rw-r--r--include/linux/clockchips.h9
-rw-r--r--include/linux/clocksource.h15
-rw-r--r--include/linux/compat.h8
-rw-r--r--include/linux/hrtimer.h6
-rw-r--r--include/linux/posix-clock.h22
-rw-r--r--include/linux/posix-timers.h105
-rw-r--r--include/linux/restart_block.h15
-rw-r--r--include/linux/signal.h7
-rw-r--r--include/linux/timekeeper_internal.h4
-rw-r--r--include/uapi/asm-generic/siginfo.h15
-rw-r--r--include/uapi/linux/time.h6
-rw-r--r--kernel/compat.c526
-rw-r--r--kernel/signal.c3
-rw-r--r--kernel/time/alarmtimer.c381
-rw-r--r--kernel/time/hrtimer.c106
-rw-r--r--kernel/time/itimer.c46
-rw-r--r--kernel/time/posix-clock.c117
-rw-r--r--kernel/time/posix-cpu-timers.c147
-rw-r--r--kernel/time/posix-stubs.c112
-rw-r--r--kernel/time/posix-timers.c759
-rw-r--r--kernel/time/posix-timers.h40
-rw-r--r--kernel/time/time.c106
-rw-r--r--kernel/time/timekeeping.c46
-rw-r--r--kernel/time/timer.c50
-rw-r--r--tools/testing/selftests/timers/Makefile5
-rw-r--r--tools/testing/selftests/timers/freq-step.c268
-rw-r--r--tools/testing/selftests/timers/inconsistency-check.c4
175 files changed, 2498 insertions, 3166 deletions
diff --git a/Documentation/devicetree/bindings/timer/faraday,fttmr010.txt b/Documentation/devicetree/bindings/timer/faraday,fttmr010.txt
index b73ca6c..1957922 100644
--- a/Documentation/devicetree/bindings/timer/faraday,fttmr010.txt
+++ b/Documentation/devicetree/bindings/timer/faraday,fttmr010.txt
@@ -7,7 +7,11 @@ Required properties:
- compatible : Must be one of
"faraday,fttmr010"
- "cortina,gemini-timer"
+ "cortina,gemini-timer", "faraday,fttmr010"
+ "moxa,moxart-timer", "faraday,fttmr010"
+ "aspeed,ast2400-timer"
+ "aspeed,ast2500-timer"
+
- reg : Should contain registers location and length
- interrupts : Should contain the three timer interrupts usually with
flags for falling edge
diff --git a/Documentation/devicetree/bindings/timer/moxa,moxart-timer.txt b/Documentation/devicetree/bindings/timer/moxa,moxart-timer.txt
deleted file mode 100644
index e207c11..0000000
--- a/Documentation/devicetree/bindings/timer/moxa,moxart-timer.txt
+++ /dev/null
@@ -1,19 +0,0 @@
-MOXA ART timer
-
-Required properties:
-
-- compatible : Must be one of:
- - "moxa,moxart-timer"
- - "aspeed,ast2400-timer"
-- reg : Should contain registers location and length
-- interrupts : Should contain the timer interrupt number
-- clocks : Should contain phandle for the clock that drives the counter
-
-Example:
-
- timer: timer@98400000 {
- compatible = "moxa,moxart-timer";
- reg = <0x98400000 0x42>;
- interrupts = <19 1>;
- clocks = <&coreclk>;
- };
diff --git a/arch/arc/include/asm/Kbuild b/arch/arc/include/asm/Kbuild
index 7bee4e4..3e74ca5 100644
--- a/arch/arc/include/asm/Kbuild
+++ b/arch/arc/include/asm/Kbuild
@@ -36,7 +36,6 @@ generic-y += preempt.h
generic-y += resource.h
generic-y += sembuf.h
generic-y += shmbuf.h
-generic-y += siginfo.h
generic-y += socket.h
generic-y += sockios.h
generic-y += stat.h
diff --git a/arch/arc/include/uapi/asm/Kbuild b/arch/arc/include/uapi/asm/Kbuild
index b15bf6b..b55fc2a 100644
--- a/arch/arc/include/uapi/asm/Kbuild
+++ b/arch/arc/include/uapi/asm/Kbuild
@@ -1,2 +1,4 @@
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
+
+generic-y += siginfo.h
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index fc8211f..666613f 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -470,7 +470,7 @@ void __init setup_arch(char **cmdline_p)
void __init time_init(void)
{
of_clk_init(NULL);
- clocksource_probe();
+ timer_probe();
}
static int __init customize_machine(void)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 6491be5..6281c3e 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -337,7 +337,7 @@ config ARCH_MULTIPLATFORM
select ARM_HAS_SG_CHAIN
select ARM_PATCH_PHYS_VIRT
select AUTO_ZRELADDR
- select CLKSRC_OF
+ select TIMER_OF
select COMMON_CLK
select GENERIC_CLOCKEVENTS
select MIGHT_HAVE_PCI
@@ -351,7 +351,7 @@ config ARM_SINGLE_ARMV7M
depends on !MMU
select ARM_NVIC
select AUTO_ZRELADDR
- select CLKSRC_OF
+ select TIMER_OF
select COMMON_CLK
select CPU_V7M
select GENERIC_CLOCKEVENTS
@@ -532,7 +532,7 @@ config ARCH_PXA
select CLKDEV_LOOKUP
select CLKSRC_PXA
select CLKSRC_MMIO
- select CLKSRC_OF
+ select TIMER_OF
select CPU_XSCALE if !CPU_XSC3
select GENERIC_CLOCKEVENTS
select GPIO_PXA
@@ -571,7 +571,7 @@ config ARCH_SA1100
select CLKDEV_LOOKUP
select CLKSRC_MMIO
select CLKSRC_PXA
- select CLKSRC_OF if OF
+ select TIMER_OF if OF
select CPU_FREQ
select CPU_SA1100
select GENERIC_CLOCKEVENTS
@@ -1357,7 +1357,7 @@ config HAVE_ARM_ARCH_TIMER
config HAVE_ARM_TWD
bool
- select CLKSRC_OF if OF
+ select TIMER_OF if OF
help
This options enables support for the ARM timer and watchdog unit
diff --git a/arch/arm/boot/dts/aspeed-g4.dtsi b/arch/arm/boot/dts/aspeed-g4.dtsi
index 8c6bc29..3e74929 100644
--- a/arch/arm/boot/dts/aspeed-g4.dtsi
+++ b/arch/arm/boot/dts/aspeed-g4.dtsi
@@ -893,6 +893,7 @@
//interrupts = <16 17 18 35 36 37 38 39>;
interrupts = <16>;
clocks = <&clk_apb>;
+ clock-names = "PCLK";
};
wdt1: wdt@1e785000 {
diff --git a/arch/arm/boot/dts/aspeed-g5.dtsi b/arch/arm/boot/dts/aspeed-g5.dtsi
index a0bea4a..1e6c701 100644
--- a/arch/arm/boot/dts/aspeed-g5.dtsi
+++ b/arch/arm/boot/dts/aspeed-g5.dtsi
@@ -1000,6 +1000,7 @@
//interrupts = <16 17 18 35 36 37 38 39>;
interrupts = <16>;
clocks = <&clk_apb>;
+ clock-names = "PCLK";
};
diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild
index 3a36d99..d836050 100644
--- a/arch/arm/include/asm/Kbuild
+++ b/arch/arm/include/asm/Kbuild
@@ -28,7 +28,6 @@ generic-y += segment.h
generic-y += sembuf.h
generic-y += serial.h
generic-y += shmbuf.h
-generic-y += siginfo.h
generic-y += simd.h
generic-y += sizes.h
generic-y += socket.h
diff --git a/arch/arm/include/uapi/asm/Kbuild b/arch/arm/include/uapi/asm/Kbuild
index 607f702..e9b098d 100644
--- a/arch/arm/include/uapi/asm/Kbuild
+++ b/arch/arm/include/uapi/asm/Kbuild
@@ -4,3 +4,5 @@ include include/uapi/asm-generic/Kbuild.asm
genhdr-y += unistd-common.h
genhdr-y += unistd-oabi.h
genhdr-y += unistd-eabi.h
+
+generic-y += siginfo.h
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index 895ae51..b30eafe 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -403,7 +403,7 @@ out:
WARN(err, "twd_local_timer_of_register failed (%d)\n", err);
return err;
}
-CLOCKSOURCE_OF_DECLARE(arm_twd_a9, "arm,cortex-a9-twd-timer", twd_local_timer_of_register);
-CLOCKSOURCE_OF_DECLARE(arm_twd_a5, "arm,cortex-a5-twd-timer", twd_local_timer_of_register);
-CLOCKSOURCE_OF_DECLARE(arm_twd_11mp, "arm,arm11mp-twd-timer", twd_local_timer_of_register);
+TIMER_OF_DECLARE(arm_twd_a9, "arm,cortex-a9-twd-timer", twd_local_timer_of_register);
+TIMER_OF_DECLARE(arm_twd_a5, "arm,cortex-a5-twd-timer", twd_local_timer_of_register);
+TIMER_OF_DECLARE(arm_twd_11mp, "arm,arm11mp-twd-timer", twd_local_timer_of_register);
#endif
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 97b22fa..629f8e9 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -120,6 +120,6 @@ void __init time_init(void)
#ifdef CONFIG_COMMON_CLK
of_clk_init(NULL);
#endif
- clocksource_probe();
+ timer_probe();
}
}
diff --git a/arch/arm/mach-aspeed/Kconfig b/arch/arm/mach-aspeed/Kconfig
index f3f8c5c..2d5570e 100644
--- a/arch/arm/mach-aspeed/Kconfig
+++ b/arch/arm/mach-aspeed/Kconfig
@@ -4,7 +4,7 @@ menuconfig ARCH_ASPEED
select SRAM
select WATCHDOG
select ASPEED_WATCHDOG
- select MOXART_TIMER
+ select FTTMR010_TIMER
select MFD_SYSCON
select PINCTRL
help
diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
index f9389c5..f23a239 100644
--- a/arch/arm/mach-bcm/Kconfig
+++ b/arch/arm/mach-bcm/Kconfig
@@ -150,7 +150,7 @@ config ARCH_BCM2835
select ARM_ERRATA_411920 if ARCH_MULTI_V6
select ARM_TIMER_SP804
select HAVE_ARM_ARCH_TIMER if ARCH_MULTI_V7
- select CLKSRC_OF
+ select TIMER_OF
select BCM2835_TIMER
select PINCTRL
select PINCTRL_BCM2835
diff --git a/arch/arm/mach-clps711x/Kconfig b/arch/arm/mach-clps711x/Kconfig
index 61284b9..f385b1f 100644
--- a/arch/arm/mach-clps711x/Kconfig
+++ b/arch/arm/mach-clps711x/Kconfig
@@ -2,7 +2,7 @@ menuconfig ARCH_CLPS711X
bool "Cirrus Logic EP721x/EP731x-based"
depends on ARCH_MULTI_V4T
select AUTO_ZRELADDR
- select CLKSRC_OF
+ select TIMER_OF
select CLPS711X_TIMER
select COMMON_CLK
select CPU_ARM720T
diff --git a/arch/arm/mach-mediatek/mediatek.c b/arch/arm/mach-mediatek/mediatek.c
index a6e3c98..c3cf215 100644
--- a/arch/arm/mach-mediatek/mediatek.c
+++ b/arch/arm/mach-mediatek/mediatek.c
@@ -41,7 +41,7 @@ static void __init mediatek_timer_init(void)
}
of_clk_init(NULL);
- clocksource_probe();
+ timer_probe();
};
static const char * const mediatek_board_dt_compat[] = {
diff --git a/arch/arm/mach-moxart/Kconfig b/arch/arm/mach-moxart/Kconfig
index 70db2ab..a4a91f9 100644
--- a/arch/arm/mach-moxart/Kconfig
+++ b/arch/arm/mach-moxart/Kconfig
@@ -4,7 +4,7 @@ menuconfig ARCH_MOXART
select CPU_FA526
select ARM_DMA_MEM_BUFFERABLE
select FARADAY_FTINTC010
- select MOXART_TIMER
+ select FTTMR010_TIMER
select GPIOLIB
select PHYLIB if NETDEVICES
help
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index 07dd692..ae4bb9f 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -497,7 +497,7 @@ void __init omap_init_time(void)
__omap_sync32k_timer_init(1, "timer_32k_ck", "ti,timer-alwon",
2, "timer_sys_ck", NULL, false);
- clocksource_probe();
+ timer_probe();
}
#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_SOC_AM43XX)
@@ -506,7 +506,7 @@ void __init omap3_secure_sync32k_timer_init(void)
__omap_sync32k_timer_init(12, "secure_32k_fck", "ti,timer-secure",
2, "timer_sys_ck", NULL, false);
- clocksource_probe();
+ timer_probe();
}
#endif /* CONFIG_ARCH_OMAP3 */
@@ -517,7 +517,7 @@ void __init omap3_gptimer_timer_init(void)
__omap_sync32k_timer_init(2, "timer_sys_ck", NULL,
1, "timer_sys_ck", "ti,timer-alwon", true);
if (of_have_populated_dt())
- clocksource_probe();
+ timer_probe();
}
#endif
@@ -532,7 +532,7 @@ static void __init omap4_sync32k_timer_init(void)
void __init omap4_local_timer_init(void)
{
omap4_sync32k_timer_init();
- clocksource_probe();
+ timer_probe();
}
#endif
@@ -656,7 +656,7 @@ void __init omap5_realtime_timer_init(void)
omap4_sync32k_timer_init();
realtime_counter_init();
- clocksource_probe();
+ timer_probe();
}
#endif /* CONFIG_SOC_OMAP5 || CONFIG_SOC_DRA7XX */
diff --git a/arch/arm/mach-rockchip/rockchip.c b/arch/arm/mach-rockchip/rockchip.c
index ef0500a..5ab834e 100644
--- a/arch/arm/mach-rockchip/rockchip.c
+++ b/arch/arm/mach-rockchip/rockchip.c
@@ -55,7 +55,7 @@ static void __init rockchip_timer_init(void)
}
of_clk_init(NULL);
- clocksource_probe();
+ timer_probe();
}
static void __init rockchip_dt_init(void)
diff --git a/arch/arm/mach-s3c24xx/Kconfig b/arch/arm/mach-s3c24xx/Kconfig
index 4b1690a..f07da82 100644
--- a/arch/arm/mach-s3c24xx/Kconfig
+++ b/arch/arm/mach-s3c24xx/Kconfig
@@ -394,7 +394,7 @@ config MACH_SMDK2416
config MACH_S3C2416_DT
bool "Samsung S3C2416 machine using devicetree"
- select CLKSRC_OF
+ select TIMER_OF
select USE_OF
select PINCTRL
select PINCTRL_S3C24XX
diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig
index 459214f..71a4934 100644
--- a/arch/arm/mach-s3c64xx/Kconfig
+++ b/arch/arm/mach-s3c64xx/Kconfig
@@ -336,7 +336,7 @@ config MACH_WLF_CRAGG_6410
config MACH_S3C64XX_DT
bool "Samsung S3C6400/S3C6410 machine using Device Tree"
- select CLKSRC_OF
+ select TIMER_OF
select CPU_S3C6400
select CPU_S3C6410
select PINCTRL
diff --git a/arch/arm/mach-shmobile/setup-rcar-gen2.c b/arch/arm/mach-shmobile/setup-rcar-gen2.c
index 52d466b..a6e74f4 100644
--- a/arch/arm/mach-shmobile/setup-rcar-gen2.c
+++ b/arch/arm/mach-shmobile/setup-rcar-gen2.c
@@ -113,7 +113,7 @@ void __init rcar_gen2_timer_init(void)
#endif /* CONFIG_ARM_ARCH_TIMER */
of_clk_init(NULL);
- clocksource_probe();
+ timer_probe();
}
struct memory_reserve_config {
diff --git a/arch/arm/mach-spear/spear13xx.c b/arch/arm/mach-spear/spear13xx.c
index ca2f6a8..31c43ca 100644
--- a/arch/arm/mach-spear/spear13xx.c
+++ b/arch/arm/mach-spear/spear13xx.c
@@ -124,5 +124,5 @@ void __init spear13xx_timer_init(void)
clk_put(pclk);
spear_setup_of_timer();
- clocksource_probe();
+ timer_probe();
}
diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c
index f44e3ac..7ab353f 100644
--- a/arch/arm/mach-sunxi/sunxi.c
+++ b/arch/arm/mach-sunxi/sunxi.c
@@ -42,7 +42,7 @@ static void __init sun6i_timer_init(void)
of_clk_init(NULL);
if (IS_ENABLED(CONFIG_RESET_CONTROLLER))
sun6i_reset_init();
- clocksource_probe();
+ timer_probe();
}
DT_MACHINE_START(SUN6I_DT, "Allwinner sun6i (A31) Family")
diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c
index a4910ea..048f15e 100644
--- a/arch/arm/mach-u300/core.c
+++ b/arch/arm/mach-u300/core.c
@@ -407,7 +407,7 @@ static const char * u300_board_compat[] = {
DT_MACHINE_START(U300_DT, "U300 S335/B335 (Device Tree)")
.map_io = u300_map_io,
.init_irq = u300_init_irq_dt,
- .init_time = clocksource_probe,
+ .init_time = timer_probe,
.init_machine = u300_init_machine_dt,
.restart = u300_restart,
.dt_compat = u300_board_compat,
diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
index ed11864..6aba9eb 100644
--- a/arch/arm/mach-zynq/common.c
+++ b/arch/arm/mach-zynq/common.c
@@ -150,7 +150,7 @@ static void __init zynq_timer_init(void)
{
zynq_clock_init();
of_clk_init(NULL);
- clocksource_probe();
+ timer_probe();
}
static struct map_desc zynq_cortex_a9_scu_map __initdata = {
diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index 73272f4..9ed0a65 100644
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -18,7 +18,7 @@ config ARCH_ALPINE
config ARCH_BCM2835
bool "Broadcom BCM2835 family"
- select CLKSRC_OF
+ select TIMER_OF
select GPIOLIB
select PINCTRL
select PINCTRL_BCM2835
@@ -178,7 +178,7 @@ config ARCH_TEGRA
select ARCH_HAS_RESET_CONTROLLER
select CLKDEV_LOOKUP
select CLKSRC_MMIO
- select CLKSRC_OF
+ select TIMER_OF
select GENERIC_CLOCKEVENTS
select GPIOLIB
select PINCTRL
diff --git a/arch/arm64/kernel/time.c b/arch/arm64/kernel/time.c
index 5977969..da33c90 100644
--- a/arch/arm64/kernel/time.c
+++ b/arch/arm64/kernel/time.c
@@ -70,7 +70,7 @@ void __init time_init(void)
u32 arch_timer_rate;
of_clk_init(NULL);
- clocksource_probe();
+ timer_probe();
tick_setup_hrtimer_broadcast();
diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c
index d0cb007..7492d90 100644
--- a/arch/arm64/kernel/vdso.c
+++ b/arch/arm64/kernel/vdso.c
@@ -220,10 +220,8 @@ void update_vsyscall(struct timekeeper *tk)
if (!use_syscall) {
/* tkr_mono.cycle_last == tkr_raw.cycle_last */
vdso_data->cs_cycle_last = tk->tkr_mono.cycle_last;
- vdso_data->raw_time_sec = tk->raw_time.tv_sec;
- vdso_data->raw_time_nsec = (tk->raw_time.tv_nsec <<
- tk->tkr_raw.shift) +
- tk->tkr_raw.xtime_nsec;
+ vdso_data->raw_time_sec = tk->raw_sec;
+ vdso_data->raw_time_nsec = tk->tkr_raw.xtime_nsec;
vdso_data->xtime_clock_sec = tk->xtime_sec;
vdso_data->xtime_clock_nsec = tk->tkr_mono.xtime_nsec;
vdso_data->cs_mono_mult = tk->tkr_mono.mult;
diff --git a/arch/c6x/include/asm/Kbuild b/arch/c6x/include/asm/Kbuild
index f0eaf047..a3c8d05 100644
--- a/arch/c6x/include/asm/Kbuild
+++ b/arch/c6x/include/asm/Kbuild
@@ -45,7 +45,6 @@ generic-y += sembuf.h
generic-y += serial.h
generic-y += shmbuf.h
generic-y += shmparam.h
-generic-y += siginfo.h
generic-y += signal.h
generic-y += socket.h
generic-y += sockios.h
diff --git a/arch/c6x/include/uapi/asm/Kbuild b/arch/c6x/include/uapi/asm/Kbuild
index 13a97aa..1c44d3b 100644
--- a/arch/c6x/include/uapi/asm/Kbuild
+++ b/arch/c6x/include/uapi/asm/Kbuild
@@ -2,3 +2,4 @@
include include/uapi/asm-generic/Kbuild.asm
generic-y += kvm_para.h
+generic-y += siginfo.h
diff --git a/arch/cris/include/asm/Kbuild b/arch/cris/include/asm/Kbuild
index 2890099..acc5781 100644
--- a/arch/cris/include/asm/Kbuild
+++ b/arch/cris/include/asm/Kbuild
@@ -36,7 +36,6 @@ generic-y += resource.h
generic-y += sections.h
generic-y += sembuf.h
generic-y += shmbuf.h
-generic-y += siginfo.h
generic-y += socket.h
generic-y += sockios.h
generic-y += statfs.h
diff --git a/arch/cris/include/uapi/asm/Kbuild b/arch/cris/include/uapi/asm/Kbuild
index b15bf6b..b55fc2a 100644
--- a/arch/cris/include/uapi/asm/Kbuild
+++ b/arch/cris/include/uapi/asm/Kbuild
@@ -1,2 +1,4 @@
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
+
+generic-y += siginfo.h
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 3ae8525..6e3d36f 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -15,7 +15,7 @@ config H8300
select OF_IRQ
select OF_EARLY_FLATTREE
select HAVE_MEMBLOCK
- select CLKSRC_OF
+ select TIMER_OF
select H8300_TMR8
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_LZO
diff --git a/arch/h8300/include/asm/Kbuild b/arch/h8300/include/asm/Kbuild
index 757cdeb..99c8246 100644
--- a/arch/h8300/include/asm/Kbuild
+++ b/arch/h8300/include/asm/Kbuild
@@ -54,7 +54,6 @@ generic-y += serial.h
generic-y += setup.h
generic-y += shmbuf.h
generic-y += shmparam.h
-generic-y += siginfo.h
generic-y += sizes.h
generic-y += socket.h
generic-y += sockios.h
diff --git a/arch/h8300/include/uapi/asm/Kbuild b/arch/h8300/include/uapi/asm/Kbuild
index b15bf6b..b55fc2a 100644
--- a/arch/h8300/include/uapi/asm/Kbuild
+++ b/arch/h8300/include/uapi/asm/Kbuild
@@ -1,2 +1,4 @@
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
+
+generic-y += siginfo.h
diff --git a/arch/h8300/kernel/setup.c b/arch/h8300/kernel/setup.c
index c8c25a4..6be15d6 100644
--- a/arch/h8300/kernel/setup.c
+++ b/arch/h8300/kernel/setup.c
@@ -246,5 +246,5 @@ void __init calibrate_delay(void)
void __init time_init(void)
{
of_clk_init(NULL);
- clocksource_probe();
+ timer_probe();
}
diff --git a/arch/hexagon/include/asm/Kbuild b/arch/hexagon/include/asm/Kbuild
index 6b45ef7..0fc9cb0 100644
--- a/arch/hexagon/include/asm/Kbuild
+++ b/arch/hexagon/include/asm/Kbuild
@@ -41,7 +41,6 @@ generic-y += sembuf.h
generic-y += serial.h
generic-y += shmbuf.h
generic-y += shmparam.h
-generic-y += siginfo.h
generic-y += sizes.h
generic-y += socket.h
generic-y += sockios.h
diff --git a/arch/hexagon/include/uapi/asm/Kbuild b/arch/hexagon/include/uapi/asm/Kbuild
index b15bf6b..b55fc2a 100644
--- a/arch/hexagon/include/uapi/asm/Kbuild
+++ b/arch/hexagon/include/uapi/asm/Kbuild
@@ -1,2 +1,4 @@
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
+
+generic-y += siginfo.h
diff --git a/arch/ia64/include/asm/siginfo.h b/arch/ia64/include/asm/siginfo.h
deleted file mode 100644
index 6f2e2dd..0000000
--- a/arch/ia64/include/asm/siginfo.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * Based on <asm-i386/siginfo.h>.
- *
- * Modified 1998-2002
- * David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co
- */
-#ifndef _ASM_IA64_SIGINFO_H
-#define _ASM_IA64_SIGINFO_H
-
-#include <linux/string.h>
-#include <uapi/asm/siginfo.h>
-
-static inline void
-copy_siginfo (siginfo_t *to, siginfo_t *from)
-{
- if (from->si_code < 0)
- memcpy(to, from, sizeof(siginfo_t));
- else
- /* _sigchld is currently the largest know union member */
- memcpy(to, from, 4*sizeof(int) + sizeof(from->_sifields._sigchld));
-}
-
-#endif /* _ASM_IA64_SIGINFO_H */
diff --git a/arch/ia64/include/uapi/asm/siginfo.h b/arch/ia64/include/uapi/asm/siginfo.h
index f72bf01..4694c64 100644
--- a/arch/ia64/include/uapi/asm/siginfo.h
+++ b/arch/ia64/include/uapi/asm/siginfo.h
@@ -11,7 +11,6 @@
#define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
#define HAVE_ARCH_SIGINFO_T
-#define HAVE_ARCH_COPY_SIGINFO
#define HAVE_ARCH_COPY_SIGINFO_TO_USER
#include <asm-generic/siginfo.h>
diff --git a/arch/m32r/include/uapi/asm/Kbuild b/arch/m32r/include/uapi/asm/Kbuild
index b15bf6b..c94ee54 100644
--- a/arch/m32r/include/uapi/asm/Kbuild
+++ b/arch/m32r/include/uapi/asm/Kbuild
@@ -1,2 +1,4 @@
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
+
+generic-y += siginfo.h
diff --git a/arch/m32r/include/uapi/asm/siginfo.h b/arch/m32r/include/uapi/asm/siginfo.h
deleted file mode 100644
index 7d9cd9e..0000000
--- a/arch/m32r/include/uapi/asm/siginfo.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef _M32R_SIGINFO_H
-#define _M32R_SIGINFO_H
-
-#include <asm-generic/siginfo.h>
-
-#endif /* _M32R_SIGINFO_H */
diff --git a/arch/m68k/include/asm/Kbuild b/arch/m68k/include/asm/Kbuild
index 82005d2..5ecf4e4 100644
--- a/arch/m68k/include/asm/Kbuild
+++ b/arch/m68k/include/asm/Kbuild
@@ -25,7 +25,6 @@ generic-y += preempt.h
generic-y += resource.h
generic-y += sections.h
generic-y += shmparam.h
-generic-y += siginfo.h
generic-y += spinlock.h
generic-y += statfs.h
generic-y += termios.h
diff --git a/arch/m68k/include/uapi/asm/Kbuild b/arch/m68k/include/uapi/asm/Kbuild
index 6436807..68b45cc 100644
--- a/arch/m68k/include/uapi/asm/Kbuild
+++ b/arch/m68k/include/uapi/asm/Kbuild
@@ -5,6 +5,7 @@ generic-y += auxvec.h
generic-y += msgbuf.h
generic-y += sembuf.h
generic-y += shmbuf.h
+generic-y += siginfo.h
generic-y += socket.h
generic-y += sockios.h
generic-y += termbits.h
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 85885a5..8e47121 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -4,7 +4,7 @@ config MICROBLAZE
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_WANT_IPC_PARSE_VERSION
select BUILDTIME_EXTABLE_SORT
- select CLKSRC_OF
+ select TIMER_OF
select CLONE_BACKWARDS3
select COMMON_CLK
select GENERIC_ATOMIC64
diff --git a/arch/microblaze/include/uapi/asm/Kbuild b/arch/microblaze/include/uapi/asm/Kbuild
index 2178c78..cb6784f 100644
--- a/arch/microblaze/include/uapi/asm/Kbuild
+++ b/arch/microblaze/include/uapi/asm/Kbuild
@@ -2,3 +2,4 @@
include include/uapi/asm-generic/Kbuild.asm
generic-y += types.h
+generic-y += siginfo.h
diff --git a/arch/microblaze/kernel/setup.c b/arch/microblaze/kernel/setup.c
index f31ebb5..be98ffe 100644
--- a/arch/microblaze/kernel/setup.c
+++ b/arch/microblaze/kernel/setup.c
@@ -192,7 +192,7 @@ void __init time_init(void)
{
of_clk_init(NULL);
setup_cpuinfo_clk();
- clocksource_probe();
+ timer_probe();
}
#ifdef CONFIG_DEBUG_FS
diff --git a/arch/microblaze/kernel/timer.c b/arch/microblaze/kernel/timer.c
index 545ccd4..ea2d83f 100644
--- a/arch/microblaze/kernel/timer.c
+++ b/arch/microblaze/kernel/timer.c
@@ -335,5 +335,5 @@ static int __init xilinx_timer_init(struct device_node *timer)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(xilinx_timer, "xlnx,xps-timer-1.00.a",
+TIMER_OF_DECLARE(xilinx_timer, "xlnx,xps-timer-1.00.a",
xilinx_timer_init);
diff --git a/arch/mips/generic/init.c b/arch/mips/generic/init.c
index 4af6192..1231b5a 100644
--- a/arch/mips/generic/init.c
+++ b/arch/mips/generic/init.c
@@ -161,7 +161,7 @@ void __init plat_time_init(void)
}
}
- clocksource_probe();
+ timer_probe();
}
void __init arch_init_irq(void)
diff --git a/arch/mips/mti-malta/malta-time.c b/arch/mips/mti-malta/malta-time.c
index 289edcf..cea4ec9 100644
--- a/arch/mips/mti-malta/malta-time.c
+++ b/arch/mips/mti-malta/malta-time.c
@@ -265,7 +265,7 @@ void __init plat_time_init(void)
(freq%1000000)*100/1000000);
#ifdef CONFIG_CLKSRC_MIPS_GIC
update_gic_frequency_dt();
- clocksource_probe();
+ timer_probe();
#endif
}
#endif
diff --git a/arch/mips/pic32/pic32mzda/time.c b/arch/mips/pic32/pic32mzda/time.c
index 62a0a78..1894e50 100644
--- a/arch/mips/pic32/pic32mzda/time.c
+++ b/arch/mips/pic32/pic32mzda/time.c
@@ -64,5 +64,5 @@ void __init plat_time_init(void)
pr_info("CPU Clock: %ldMHz\n", rate / 1000000);
mips_hpt_frequency = rate / 2;
- clocksource_probe();
+ timer_probe();
}
diff --git a/arch/mips/pistachio/time.c b/arch/mips/pistachio/time.c
index 1022201..17a0f1d 100644
--- a/arch/mips/pistachio/time.c
+++ b/arch/mips/pistachio/time.c
@@ -39,7 +39,7 @@ void __init plat_time_init(void)
struct clk *clk;
of_clk_init(NULL);
- clocksource_probe();
+ timer_probe();
np = of_get_cpu_node(0, NULL);
if (!np) {
diff --git a/arch/mips/ralink/Kconfig b/arch/mips/ralink/Kconfig
index 9825dee..710b04c 100644
--- a/arch/mips/ralink/Kconfig
+++ b/arch/mips/ralink/Kconfig
@@ -4,7 +4,7 @@ config CLKEVT_RT3352
bool
depends on SOC_RT305X || SOC_MT7620
default y
- select CLKSRC_OF
+ select TIMER_OF
select CLKSRC_MMIO
config RALINK_ILL_ACC
diff --git a/arch/mips/ralink/cevt-rt3352.c b/arch/mips/ralink/cevt-rt3352.c
index b8a1376..92f284d 100644
--- a/arch/mips/ralink/cevt-rt3352.c
+++ b/arch/mips/ralink/cevt-rt3352.c
@@ -152,4 +152,4 @@ static int __init ralink_systick_init(struct device_node *np)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(systick, "ralink,cevt-systick", ralink_systick_init);
+TIMER_OF_DECLARE(systick, "ralink,cevt-systick", ralink_systick_init);
diff --git a/arch/mips/ralink/clk.c b/arch/mips/ralink/clk.c
index df79588..eb1c619 100644
--- a/arch/mips/ralink/clk.c
+++ b/arch/mips/ralink/clk.c
@@ -82,5 +82,5 @@ void __init plat_time_init(void)
pr_info("CPU Clock: %ldMHz\n", clk_get_rate(clk) / 1000000);
mips_hpt_frequency = clk_get_rate(clk) / 2;
clk_put(clk);
- clocksource_probe();
+ timer_probe();
}
diff --git a/arch/mips/ralink/timer-gic.c b/arch/mips/ralink/timer-gic.c
index 069771d..b5f07d2 100644
--- a/arch/mips/ralink/timer-gic.c
+++ b/arch/mips/ralink/timer-gic.c
@@ -20,5 +20,5 @@ void __init plat_time_init(void)
ralink_of_remap();
of_clk_init(NULL);
- clocksource_probe();
+ timer_probe();
}
diff --git a/arch/mips/xilfpga/time.c b/arch/mips/xilfpga/time.c
index cbb3fca..36f3f18 100644
--- a/arch/mips/xilfpga/time.c
+++ b/arch/mips/xilfpga/time.c
@@ -22,7 +22,7 @@ void __init plat_time_init(void)
struct clk *clk;
of_clk_init(NULL);
- clocksource_probe();
+ timer_probe();
np = of_get_cpu_node(0, NULL);
if (!np) {
diff --git a/arch/mn10300/include/uapi/asm/Kbuild b/arch/mn10300/include/uapi/asm/Kbuild
index b15bf6b..c94ee54 100644
--- a/arch/mn10300/include/uapi/asm/Kbuild
+++ b/arch/mn10300/include/uapi/asm/Kbuild
@@ -1,2 +1,4 @@
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
+
+generic-y += siginfo.h
diff --git a/arch/mn10300/include/uapi/asm/siginfo.h b/arch/mn10300/include/uapi/asm/siginfo.h
deleted file mode 100644
index 0815d29..0000000
--- a/arch/mn10300/include/uapi/asm/siginfo.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <asm-generic/siginfo.h>
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index a72d5f0..c587764 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -1,6 +1,6 @@
config NIOS2
def_bool y
- select CLKSRC_OF
+ select TIMER_OF
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
select GENERIC_CPU_DEVICES
diff --git a/arch/nios2/include/asm/Kbuild b/arch/nios2/include/asm/Kbuild
index 727dbb3..e1a843d 100644
--- a/arch/nios2/include/asm/Kbuild
+++ b/arch/nios2/include/asm/Kbuild
@@ -47,7 +47,6 @@ generic-y += segment.h
generic-y += sembuf.h
generic-y += serial.h
generic-y += shmbuf.h
-generic-y += siginfo.h
generic-y += signal.h
generic-y += socket.h
generic-y += sockios.h
diff --git a/arch/nios2/include/uapi/asm/Kbuild b/arch/nios2/include/uapi/asm/Kbuild
index 374bd12..51eff5b 100644
--- a/arch/nios2/include/uapi/asm/Kbuild
+++ b/arch/nios2/include/uapi/asm/Kbuild
@@ -2,4 +2,5 @@
include include/uapi/asm-generic/Kbuild.asm
generic-y += setup.h
+generic-y += siginfo.h
generic-y += ucontext.h
diff --git a/arch/nios2/kernel/time.c b/arch/nios2/kernel/time.c
index 6e2bdc9..645129a 100644
--- a/arch/nios2/kernel/time.c
+++ b/arch/nios2/kernel/time.c
@@ -350,7 +350,7 @@ void __init time_init(void)
if (count < 2)
panic("%d timer is found, it needs 2 timers in system\n", count);
- clocksource_probe();
+ timer_probe();
}
-CLOCKSOURCE_OF_DECLARE(nios2_timer, ALTR_TIMER_COMPATIBLE, nios2_time_init);
+TIMER_OF_DECLARE(nios2_timer, ALTR_TIMER_COMPATIBLE, nios2_time_init);
diff --git a/arch/openrisc/include/asm/Kbuild b/arch/openrisc/include/asm/Kbuild
index fdbcf0b..091585a 100644
--- a/arch/openrisc/include/asm/Kbuild
+++ b/arch/openrisc/include/asm/Kbuild
@@ -46,7 +46,6 @@ generic-y += sembuf.h
generic-y += setup.h
generic-y += shmbuf.h
generic-y += shmparam.h
-generic-y += siginfo.h
generic-y += signal.h
generic-y += socket.h
generic-y += sockios.h
diff --git a/arch/openrisc/include/uapi/asm/Kbuild b/arch/openrisc/include/uapi/asm/Kbuild
index b15bf6b..b55fc2a 100644
--- a/arch/openrisc/include/uapi/asm/Kbuild
+++ b/arch/openrisc/include/uapi/asm/Kbuild
@@ -1,2 +1,4 @@
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
+
+generic-y += siginfo.h
diff --git a/arch/score/include/uapi/asm/Kbuild b/arch/score/include/uapi/asm/Kbuild
index b15bf6b..c94ee54 100644
--- a/arch/score/include/uapi/asm/Kbuild
+++ b/arch/score/include/uapi/asm/Kbuild
@@ -1,2 +1,4 @@
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
+
+generic-y += siginfo.h
diff --git a/arch/score/include/uapi/asm/siginfo.h b/arch/score/include/uapi/asm/siginfo.h
deleted file mode 100644
index 87ca356..0000000
--- a/arch/score/include/uapi/asm/siginfo.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef _ASM_SCORE_SIGINFO_H
-#define _ASM_SCORE_SIGINFO_H
-
-#include <asm-generic/siginfo.h>
-
-#endif /* _ASM_SCORE_SIGINFO_H */
diff --git a/arch/sh/boards/Kconfig b/arch/sh/boards/Kconfig
index 4e21949..3554fca 100644
--- a/arch/sh/boards/Kconfig
+++ b/arch/sh/boards/Kconfig
@@ -10,7 +10,7 @@ config SH_DEVICE_TREE
bool "Board Described by Device Tree"
select OF
select OF_EARLY_FLATTREE
- select CLKSRC_OF
+ select TIMER_OF
select COMMON_CLK
select GENERIC_CALIBRATE_DELAY
help
diff --git a/arch/sh/boards/of-generic.c b/arch/sh/boards/of-generic.c
index 1fb6d57..4feb7c8 100644
--- a/arch/sh/boards/of-generic.c
+++ b/arch/sh/boards/of-generic.c
@@ -119,7 +119,7 @@ static void __init sh_of_mem_reserve(void)
static void __init sh_of_time_init(void)
{
pr_info("SH generic board support: scanning for clocksource devices\n");
- clocksource_probe();
+ timer_probe();
}
static void __init sh_of_setup(char **cmdline_p)
diff --git a/arch/sh/include/asm/Kbuild b/arch/sh/include/asm/Kbuild
index cf2a750..590c91a 100644
--- a/arch/sh/include/asm/Kbuild
+++ b/arch/sh/include/asm/Kbuild
@@ -29,7 +29,6 @@ generic-y += rwsem.h
generic-y += sembuf.h
generic-y += serial.h
generic-y += shmbuf.h
-generic-y += siginfo.h
generic-y += sizes.h
generic-y += socket.h
generic-y += statfs.h
diff --git a/arch/sh/include/uapi/asm/Kbuild b/arch/sh/include/uapi/asm/Kbuild
index b15bf6b..b55fc2a 100644
--- a/arch/sh/include/uapi/asm/Kbuild
+++ b/arch/sh/include/uapi/asm/Kbuild
@@ -1,2 +1,4 @@
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
+
+generic-y += siginfo.h
diff --git a/arch/sparc/include/asm/siginfo.h b/arch/sparc/include/asm/siginfo.h
deleted file mode 100644
index 48c34c1..0000000
--- a/arch/sparc/include/asm/siginfo.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#ifndef __SPARC_SIGINFO_H
-#define __SPARC_SIGINFO_H
-
-#include <uapi/asm/siginfo.h>
-
-
-#ifdef CONFIG_COMPAT
-
-struct compat_siginfo;
-
-#endif /* CONFIG_COMPAT */
-
-#endif /* !(__SPARC_SIGINFO_H) */
diff --git a/arch/unicore32/include/asm/Kbuild b/arch/unicore32/include/asm/Kbuild
index e9ad511..7a53a55 100644
--- a/arch/unicore32/include/asm/Kbuild
+++ b/arch/unicore32/include/asm/Kbuild
@@ -44,7 +44,6 @@ generic-y += serial.h
generic-y += setup.h
generic-y += shmbuf.h
generic-y += shmparam.h
-generic-y += siginfo.h
generic-y += signal.h
generic-y += sizes.h
generic-y += socket.h
diff --git a/arch/unicore32/include/uapi/asm/Kbuild b/arch/unicore32/include/uapi/asm/Kbuild
index 13a97aa..1c44d3b 100644
--- a/arch/unicore32/include/uapi/asm/Kbuild
+++ b/arch/unicore32/include/uapi/asm/Kbuild
@@ -2,3 +2,4 @@
include include/uapi/asm-generic/Kbuild.asm
generic-y += kvm_para.h
+generic-y += siginfo.h
diff --git a/arch/xtensa/include/asm/Kbuild b/arch/xtensa/include/asm/Kbuild
index cc23e9e..30f62901 100644
--- a/arch/xtensa/include/asm/Kbuild
+++ b/arch/xtensa/include/asm/Kbuild
@@ -25,7 +25,6 @@ generic-y += preempt.h
generic-y += resource.h
generic-y += rwsem.h
generic-y += sections.h
-generic-y += siginfo.h
generic-y += statfs.h
generic-y += termios.h
generic-y += topology.h
diff --git a/arch/xtensa/include/uapi/asm/Kbuild b/arch/xtensa/include/uapi/asm/Kbuild
index b15bf6b..4cb0d2f 100644
--- a/arch/xtensa/include/uapi/asm/Kbuild
+++ b/arch/xtensa/include/uapi/asm/Kbuild
@@ -1,2 +1,3 @@
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
+generic-y += siginfo.h
diff --git a/arch/xtensa/kernel/time.c b/arch/xtensa/kernel/time.c
index 668c105..fd524a5 100644
--- a/arch/xtensa/kernel/time.c
+++ b/arch/xtensa/kernel/time.c
@@ -187,7 +187,7 @@ void __init time_init(void)
local_timer_setup(0);
setup_irq(this_cpu_ptr(&ccount_timer)->evt.irq, &timer_irqaction);
sched_clock_register(ccount_sched_clock_read, 32, ccount_freq);
- clocksource_probe();
+ timer_probe();
}
/*
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 31adbeb..2af7001 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -539,15 +539,6 @@ config HANGCHECK_TIMER
out to lunch past a certain margin. It can reboot the system
or merely print a warning.
-config MMTIMER
- tristate "MMTIMER Memory mapped RTC for SGI Altix"
- depends on IA64_GENERIC || IA64_SGI_SN2
- depends on POSIX_TIMERS
- default y
- help
- The mmtimer device allows direct userspace access to the
- Altix system timer.
-
config UV_MMTIMER
tristate "UV_MMTIMER Memory mapped RTC for SGI UV"
depends on X86_UV
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 6e6c244..53e3372 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -10,7 +10,6 @@ obj-$(CONFIG_VIRTIO_CONSOLE) += virtio_console.o
obj-$(CONFIG_RAW_DRIVER) += raw.o
obj-$(CONFIG_SGI_SNSC) += snsc.o snsc_event.o
obj-$(CONFIG_MSPEC) += mspec.o
-obj-$(CONFIG_MMTIMER) += mmtimer.o
obj-$(CONFIG_UV_MMTIMER) += uv_mmtimer.o
obj-$(CONFIG_IBM_BSR) += bsr.o
obj-$(CONFIG_SGI_MBCS) += mbcs.o
diff --git a/drivers/char/mmtimer.c b/drivers/char/mmtimer.c
deleted file mode 100644
index 0e7fcb0..0000000
--- a/drivers/char/mmtimer.c
+++ /dev/null
@@ -1,858 +0,0 @@
-/*
- * Timer device implementation for SGI SN platforms.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2001-2006 Silicon Graphics, Inc. All rights reserved.
- *
- * This driver exports an API that should be supportable by any HPET or IA-PC
- * multimedia timer. The code below is currently specific to the SGI Altix
- * SHub RTC, however.
- *
- * 11/01/01 - jbarnes - initial revision
- * 9/10/04 - Christoph Lameter - remove interrupt support for kernel inclusion
- * 10/1/04 - Christoph Lameter - provide posix clock CLOCK_SGI_CYCLE
- * 10/13/04 - Christoph Lameter, Dimitri Sivanich - provide timer interrupt
- * support via the posix timer interface
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/ioctl.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/fs.h>
-#include <linux/mmtimer.h>
-#include <linux/miscdevice.h>
-#include <linux/posix-timers.h>
-#include <linux/interrupt.h>
-#include <linux/time.h>
-#include <linux/math64.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-
-#include <linux/uaccess.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/intr.h>
-#include <asm/sn/shub_mmr.h>
-#include <asm/sn/nodepda.h>
-#include <asm/sn/shubio.h>
-
-MODULE_AUTHOR("Jesse Barnes <jbarnes@sgi.com>");
-MODULE_DESCRIPTION("SGI Altix RTC Timer");
-MODULE_LICENSE("GPL");
-
-/* name of the device, usually in /dev */
-#define MMTIMER_NAME "mmtimer"
-#define MMTIMER_DESC "SGI Altix RTC Timer"
-#define MMTIMER_VERSION "2.1"
-
-#define RTC_BITS 55 /* 55 bits for this implementation */
-
-static struct k_clock sgi_clock;
-
-extern unsigned long sn_rtc_cycles_per_second;
-
-#define RTC_COUNTER_ADDR ((long *)LOCAL_MMR_ADDR(SH_RTC))
-
-#define rtc_time() (*RTC_COUNTER_ADDR)
-
-static DEFINE_MUTEX(mmtimer_mutex);
-static long mmtimer_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg);
-static int mmtimer_mmap(struct file *file, struct vm_area_struct *vma);
-
-/*
- * Period in femtoseconds (10^-15 s)
- */
-static unsigned long mmtimer_femtoperiod = 0;
-
-static const struct file_operations mmtimer_fops = {
- .owner = THIS_MODULE,
- .mmap = mmtimer_mmap,
- .unlocked_ioctl = mmtimer_ioctl,
- .llseek = noop_llseek,
-};
-
-/*
- * We only have comparison registers RTC1-4 currently available per
- * node. RTC0 is used by SAL.
- */
-/* Check for an RTC interrupt pending */
-static int mmtimer_int_pending(int comparator)
-{
- if (HUB_L((unsigned long *)LOCAL_MMR_ADDR(SH_EVENT_OCCURRED)) &
- SH_EVENT_OCCURRED_RTC1_INT_MASK << comparator)
- return 1;
- else
- return 0;
-}
-
-/* Clear the RTC interrupt pending bit */
-static void mmtimer_clr_int_pending(int comparator)
-{
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_EVENT_OCCURRED_ALIAS),
- SH_EVENT_OCCURRED_RTC1_INT_MASK << comparator);
-}
-
-/* Setup timer on comparator RTC1 */
-static void mmtimer_setup_int_0(int cpu, u64 expires)
-{
- u64 val;
-
- /* Disable interrupt */
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC1_INT_ENABLE), 0UL);
-
- /* Initialize comparator value */
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_INT_CMPB), -1L);
-
- /* Clear pending bit */
- mmtimer_clr_int_pending(0);
-
- val = ((u64)SGI_MMTIMER_VECTOR << SH_RTC1_INT_CONFIG_IDX_SHFT) |
- ((u64)cpu_physical_id(cpu) <<
- SH_RTC1_INT_CONFIG_PID_SHFT);
-
- /* Set configuration */
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC1_INT_CONFIG), val);
-
- /* Enable RTC interrupts */
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC1_INT_ENABLE), 1UL);
-
- /* Initialize comparator value */
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_INT_CMPB), expires);
-
-
-}
-
-/* Setup timer on comparator RTC2 */
-static void mmtimer_setup_int_1(int cpu, u64 expires)
-{
- u64 val;
-
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC2_INT_ENABLE), 0UL);
-
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_INT_CMPC), -1L);
-
- mmtimer_clr_int_pending(1);
-
- val = ((u64)SGI_MMTIMER_VECTOR << SH_RTC2_INT_CONFIG_IDX_SHFT) |
- ((u64)cpu_physical_id(cpu) <<
- SH_RTC2_INT_CONFIG_PID_SHFT);
-
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC2_INT_CONFIG), val);
-
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC2_INT_ENABLE), 1UL);
-
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_INT_CMPC), expires);
-}
-
-/* Setup timer on comparator RTC3 */
-static void mmtimer_setup_int_2(int cpu, u64 expires)
-{
- u64 val;
-
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC3_INT_ENABLE), 0UL);
-
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_INT_CMPD), -1L);
-
- mmtimer_clr_int_pending(2);
-
- val = ((u64)SGI_MMTIMER_VECTOR << SH_RTC3_INT_CONFIG_IDX_SHFT) |
- ((u64)cpu_physical_id(cpu) <<
- SH_RTC3_INT_CONFIG_PID_SHFT);
-
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC3_INT_CONFIG), val);
-
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC3_INT_ENABLE), 1UL);
-
- HUB_S((u64 *)LOCAL_MMR_ADDR(SH_INT_CMPD), expires);
-}
-
-/*
- * This function must be called with interrupts disabled and preemption off
- * in order to insure that the setup succeeds in a deterministic time frame.
- * It will check if the interrupt setup succeeded.
- */
-static int mmtimer_setup(int cpu, int comparator, unsigned long expires,
- u64 *set_completion_time)
-{
- switch (comparator) {
- case 0:
- mmtimer_setup_int_0(cpu, expires);
- break;
- case 1:
- mmtimer_setup_int_1(cpu, expires);
- break;
- case 2:
- mmtimer_setup_int_2(cpu, expires);
- break;
- }
- /* We might've missed our expiration time */
- *set_completion_time = rtc_time();
- if (*set_completion_time <= expires)
- return 1;
-
- /*
- * If an interrupt is already pending then its okay
- * if not then we failed
- */
- return mmtimer_int_pending(comparator);
-}
-
-static int mmtimer_disable_int(long nasid, int comparator)
-{
- switch (comparator) {
- case 0:
- nasid == -1 ? HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC1_INT_ENABLE),
- 0UL) : REMOTE_HUB_S(nasid, SH_RTC1_INT_ENABLE, 0UL);
- break;
- case 1:
- nasid == -1 ? HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC2_INT_ENABLE),
- 0UL) : REMOTE_HUB_S(nasid, SH_RTC2_INT_ENABLE, 0UL);
- break;
- case 2:
- nasid == -1 ? HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC3_INT_ENABLE),
- 0UL) : REMOTE_HUB_S(nasid, SH_RTC3_INT_ENABLE, 0UL);
- break;
- default:
- return -EFAULT;
- }
- return 0;
-}
-
-#define COMPARATOR 1 /* The comparator to use */
-
-#define TIMER_OFF 0xbadcabLL /* Timer is not setup */
-#define TIMER_SET 0 /* Comparator is set for this timer */
-
-#define MMTIMER_INTERVAL_RETRY_INCREMENT_DEFAULT 40
-
-/* There is one of these for each timer */
-struct mmtimer {
- struct rb_node list;
- struct k_itimer *timer;
- int cpu;
-};
-
-struct mmtimer_node {
- spinlock_t lock ____cacheline_aligned;
- struct rb_root timer_head;
- struct rb_node *next;
- struct tasklet_struct tasklet;
-};
-static struct mmtimer_node *timers;
-
-static unsigned mmtimer_interval_retry_increment =
- MMTIMER_INTERVAL_RETRY_INCREMENT_DEFAULT;
-module_param(mmtimer_interval_retry_increment, uint, 0644);
-MODULE_PARM_DESC(mmtimer_interval_retry_increment,
- "RTC ticks to add to expiration on interval retry (default 40)");
-
-/*
- * Add a new mmtimer struct to the node's mmtimer list.
- * This function assumes the struct mmtimer_node is locked.
- */
-static void mmtimer_add_list(struct mmtimer *n)
-{
- int nodeid = n->timer->it.mmtimer.node;
- unsigned long expires = n->timer->it.mmtimer.expires;
- struct rb_node **link = &timers[nodeid].timer_head.rb_node;
- struct rb_node *parent = NULL;
- struct mmtimer *x;
-
- /*
- * Find the right place in the rbtree:
- */
- while (*link) {
- parent = *link;
- x = rb_entry(parent, struct mmtimer, list);
-
- if (expires < x->timer->it.mmtimer.expires)
- link = &(*link)->rb_left;
- else
- link = &(*link)->rb_right;
- }
-
- /*
- * Insert the timer to the rbtree and check whether it
- * replaces the first pending timer
- */
- rb_link_node(&n->list, parent, link);
- rb_insert_color(&n->list, &timers[nodeid].timer_head);
-
- if (!timers[nodeid].next || expires < rb_entry(timers[nodeid].next,
- struct mmtimer, list)->timer->it.mmtimer.expires)
- timers[nodeid].next = &n->list;
-}
-
-/*
- * Set the comparator for the next timer.
- * This function assumes the struct mmtimer_node is locked.
- */
-static void mmtimer_set_next_timer(int nodeid)
-{
- struct mmtimer_node *n = &timers[nodeid];
- struct mmtimer *x;
- struct k_itimer *t;
- u64 expires, exp, set_completion_time;
- int i;
-
-restart:
- if (n->next == NULL)
- return;
-
- x = rb_entry(n->next, struct mmtimer, list);
- t = x->timer;
- if (!t->it.mmtimer.incr) {
- /* Not an interval timer */
- if (!mmtimer_setup(x->cpu, COMPARATOR,
- t->it.mmtimer.expires,
- &set_completion_time)) {
- /* Late setup, fire now */
- tasklet_schedule(&n->tasklet);
- }
- return;
- }
-
- /* Interval timer */
- i = 0;
- expires = exp = t->it.mmtimer.expires;
- while (!mmtimer_setup(x->cpu, COMPARATOR, expires,
- &set_completion_time)) {
- int to;
-
- i++;
- expires = set_completion_time +
- mmtimer_interval_retry_increment + (1 << i);
- /* Calculate overruns as we go. */
- to = ((u64)(expires - exp) / t->it.mmtimer.incr);
- if (to) {
- t->it_overrun += to;
- t->it.mmtimer.expires += t->it.mmtimer.incr * to;
- exp = t->it.mmtimer.expires;
- }
- if (i > 20) {
- printk(KERN_ALERT "mmtimer: cannot reschedule timer\n");
- t->it.mmtimer.clock = TIMER_OFF;
- n->next = rb_next(&x->list);
- rb_erase(&x->list, &n->timer_head);
- kfree(x);
- goto restart;
- }
- }
-}
-
-/**
- * mmtimer_ioctl - ioctl interface for /dev/mmtimer
- * @file: file structure for the device
- * @cmd: command to execute
- * @arg: optional argument to command
- *
- * Executes the command specified by @cmd. Returns 0 for success, < 0 for
- * failure.
- *
- * Valid commands:
- *
- * %MMTIMER_GETOFFSET - Should return the offset (relative to the start
- * of the page where the registers are mapped) for the counter in question.
- *
- * %MMTIMER_GETRES - Returns the resolution of the clock in femto (10^-15)
- * seconds
- *
- * %MMTIMER_GETFREQ - Copies the frequency of the clock in Hz to the address
- * specified by @arg
- *
- * %MMTIMER_GETBITS - Returns the number of bits in the clock's counter
- *
- * %MMTIMER_MMAPAVAIL - Returns 1 if the registers can be mmap'd into userspace
- *
- * %MMTIMER_GETCOUNTER - Gets the current value in the counter and places it
- * in the address specified by @arg.
- */
-static long mmtimer_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- int ret = 0;
-
- mutex_lock(&mmtimer_mutex);
-
- switch (cmd) {
- case MMTIMER_GETOFFSET: /* offset of the counter */
- /*
- * SN RTC registers are on their own 64k page
- */
- if(PAGE_SIZE <= (1 << 16))
- ret = (((long)RTC_COUNTER_ADDR) & (PAGE_SIZE-1)) / 8;
- else
- ret = -ENOSYS;
- break;
-
- case MMTIMER_GETRES: /* resolution of the clock in 10^-15 s */
- if(copy_to_user((unsigned long __user *)arg,
- &mmtimer_femtoperiod, sizeof(unsigned long)))
- ret = -EFAULT;
- break;
-
- case MMTIMER_GETFREQ: /* frequency in Hz */
- if(copy_to_user((unsigned long __user *)arg,
- &sn_rtc_cycles_per_second,
- sizeof(unsigned long)))
- ret = -EFAULT;
- break;
-
- case MMTIMER_GETBITS: /* number of bits in the clock */
- ret = RTC_BITS;
- break;
-
- case MMTIMER_MMAPAVAIL: /* can we mmap the clock into userspace? */
- ret = (PAGE_SIZE <= (1 << 16)) ? 1 : 0;
- break;
-
- case MMTIMER_GETCOUNTER:
- if(copy_to_user((unsigned long __user *)arg,
- RTC_COUNTER_ADDR, sizeof(unsigned long)))
- ret = -EFAULT;
- break;
- default:
- ret = -ENOTTY;
- break;
- }
- mutex_unlock(&mmtimer_mutex);
- return ret;
-}
-
-/**
- * mmtimer_mmap - maps the clock's registers into userspace
- * @file: file structure for the device
- * @vma: VMA to map the registers into
- *
- * Calls remap_pfn_range() to map the clock's registers into
- * the calling process' address space.
- */
-static int mmtimer_mmap(struct file *file, struct vm_area_struct *vma)
-{
- unsigned long mmtimer_addr;
-
- if (vma->vm_end - vma->vm_start != PAGE_SIZE)
- return -EINVAL;
-
- if (vma->vm_flags & VM_WRITE)
- return -EPERM;
-
- if (PAGE_SIZE > (1 << 16))
- return -ENOSYS;
-
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
- mmtimer_addr = __pa(RTC_COUNTER_ADDR);
- mmtimer_addr &= ~(PAGE_SIZE - 1);
- mmtimer_addr &= 0xfffffffffffffffUL;
-
- if (remap_pfn_range(vma, vma->vm_start, mmtimer_addr >> PAGE_SHIFT,
- PAGE_SIZE, vma->vm_page_prot)) {
- printk(KERN_ERR "remap_pfn_range failed in mmtimer.c\n");
- return -EAGAIN;
- }
-
- return 0;
-}
-
-static struct miscdevice mmtimer_miscdev = {
- .minor = SGI_MMTIMER,
- .name = MMTIMER_NAME,
- .fops = &mmtimer_fops
-};
-
-static struct timespec sgi_clock_offset;
-static int sgi_clock_period;
-
-/*
- * Posix Timer Interface
- */
-
-static struct timespec sgi_clock_offset;
-static int sgi_clock_period;
-
-static int sgi_clock_get(clockid_t clockid, struct timespec64 *tp)
-{
- u64 nsec;
-
- nsec = rtc_time() * sgi_clock_period
- + sgi_clock_offset.tv_nsec;
- *tp = ns_to_timespec64(nsec);
- tp->tv_sec += sgi_clock_offset.tv_sec;
- return 0;
-};
-
-static int sgi_clock_set(const clockid_t clockid, const struct timespec64 *tp)
-{
-
- u64 nsec;
- u32 rem;
-
- nsec = rtc_time() * sgi_clock_period;
-
- sgi_clock_offset.tv_sec = tp->tv_sec - div_u64_rem(nsec, NSEC_PER_SEC, &rem);
-
- if (rem <= tp->tv_nsec)
- sgi_clock_offset.tv_nsec = tp->tv_sec - rem;
- else {
- sgi_clock_offset.tv_nsec = tp->tv_sec + NSEC_PER_SEC - rem;
- sgi_clock_offset.tv_sec--;
- }
- return 0;
-}
-
-/**
- * mmtimer_interrupt - timer interrupt handler
- * @irq: irq received
- * @dev_id: device the irq came from
- *
- * Called when one of the comarators matches the counter, This
- * routine will send signals to processes that have requested
- * them.
- *
- * This interrupt is run in an interrupt context
- * by the SHUB. It is therefore safe to locally access SHub
- * registers.
- */
-static irqreturn_t
-mmtimer_interrupt(int irq, void *dev_id)
-{
- unsigned long expires = 0;
- int result = IRQ_NONE;
- unsigned indx = cpu_to_node(smp_processor_id());
- struct mmtimer *base;
-
- spin_lock(&timers[indx].lock);
- base = rb_entry(timers[indx].next, struct mmtimer, list);
- if (base == NULL) {
- spin_unlock(&timers[indx].lock);
- return result;
- }
-
- if (base->cpu == smp_processor_id()) {
- if (base->timer)
- expires = base->timer->it.mmtimer.expires;
- /* expires test won't work with shared irqs */
- if ((mmtimer_int_pending(COMPARATOR) > 0) ||
- (expires && (expires <= rtc_time()))) {
- mmtimer_clr_int_pending(COMPARATOR);
- tasklet_schedule(&timers[indx].tasklet);
- result = IRQ_HANDLED;
- }
- }
- spin_unlock(&timers[indx].lock);
- return result;
-}
-
-static void mmtimer_tasklet(unsigned long data)
-{
- int nodeid = data;
- struct mmtimer_node *mn = &timers[nodeid];
- struct mmtimer *x;
- struct k_itimer *t;
- unsigned long flags;
-
- /* Send signal and deal with periodic signals */
- spin_lock_irqsave(&mn->lock, flags);
- if (!mn->next)
- goto out;
-
- x = rb_entry(mn->next, struct mmtimer, list);
- t = x->timer;
-
- if (t->it.mmtimer.clock == TIMER_OFF)
- goto out;
-
- t->it_overrun = 0;
-
- mn->next = rb_next(&x->list);
- rb_erase(&x->list, &mn->timer_head);
-
- if (posix_timer_event(t, 0) != 0)
- t->it_overrun++;
-
- if(t->it.mmtimer.incr) {
- t->it.mmtimer.expires += t->it.mmtimer.incr;
- mmtimer_add_list(x);
- } else {
- /* Ensure we don't false trigger in mmtimer_interrupt */
- t->it.mmtimer.clock = TIMER_OFF;
- t->it.mmtimer.expires = 0;
- kfree(x);
- }
- /* Set comparator for next timer, if there is one */
- mmtimer_set_next_timer(nodeid);
-
- t->it_overrun_last = t->it_overrun;
-out:
- spin_unlock_irqrestore(&mn->lock, flags);
-}
-
-static int sgi_timer_create(struct k_itimer *timer)
-{
- /* Insure that a newly created timer is off */
- timer->it.mmtimer.clock = TIMER_OFF;
- return 0;
-}
-
-/* This does not really delete a timer. It just insures
- * that the timer is not active
- *
- * Assumption: it_lock is already held with irq's disabled
- */
-static int sgi_timer_del(struct k_itimer *timr)
-{
- cnodeid_t nodeid = timr->it.mmtimer.node;
- unsigned long irqflags;
-
- spin_lock_irqsave(&timers[nodeid].lock, irqflags);
- if (timr->it.mmtimer.clock != TIMER_OFF) {
- unsigned long expires = timr->it.mmtimer.expires;
- struct rb_node *n = timers[nodeid].timer_head.rb_node;
- struct mmtimer *uninitialized_var(t);
- int r = 0;
-
- timr->it.mmtimer.clock = TIMER_OFF;
- timr->it.mmtimer.expires = 0;
-
- while (n) {
- t = rb_entry(n, struct mmtimer, list);
- if (t->timer == timr)
- break;
-
- if (expires < t->timer->it.mmtimer.expires)
- n = n->rb_left;
- else
- n = n->rb_right;
- }
-
- if (!n) {
- spin_unlock_irqrestore(&timers[nodeid].lock, irqflags);
- return 0;
- }
-
- if (timers[nodeid].next == n) {
- timers[nodeid].next = rb_next(n);
- r = 1;
- }
-
- rb_erase(n, &timers[nodeid].timer_head);
- kfree(t);
-
- if (r) {
- mmtimer_disable_int(cnodeid_to_nasid(nodeid),
- COMPARATOR);
- mmtimer_set_next_timer(nodeid);
- }
- }
- spin_unlock_irqrestore(&timers[nodeid].lock, irqflags);
- return 0;
-}
-
-/* Assumption: it_lock is already held with irq's disabled */
-static void sgi_timer_get(struct k_itimer *timr, struct itimerspec64 *cur_setting)
-{
-
- if (timr->it.mmtimer.clock == TIMER_OFF) {
- cur_setting->it_interval.tv_nsec = 0;
- cur_setting->it_interval.tv_sec = 0;
- cur_setting->it_value.tv_nsec = 0;
- cur_setting->it_value.tv_sec =0;
- return;
- }
-
- cur_setting->it_interval = ns_to_timespec64(timr->it.mmtimer.incr * sgi_clock_period);
- cur_setting->it_value = ns_to_timespec64((timr->it.mmtimer.expires - rtc_time()) * sgi_clock_period);
-}
-
-
-static int sgi_timer_set(struct k_itimer *timr, int flags,
- struct itimerspec64 *new_setting,
- struct itimerspec64 *old_setting)
-{
- unsigned long when, period, irqflags;
- int err = 0;
- cnodeid_t nodeid;
- struct mmtimer *base;
- struct rb_node *n;
-
- if (old_setting)
- sgi_timer_get(timr, old_setting);
-
- sgi_timer_del(timr);
- when = timespec64_to_ns(&new_setting->it_value);
- period = timespec64_to_ns(&new_setting->it_interval);
-
- if (when == 0)
- /* Clear timer */
- return 0;
-
- base = kmalloc(sizeof(struct mmtimer), GFP_KERNEL);
- if (base == NULL)
- return -ENOMEM;
-
- if (flags & TIMER_ABSTIME) {
- struct timespec64 n;
- unsigned long now;
-
- getnstimeofday64(&n);
- now = timespec64_to_ns(&n);
- if (when > now)
- when -= now;
- else
- /* Fire the timer immediately */
- when = 0;
- }
-
- /*
- * Convert to sgi clock period. Need to keep rtc_time() as near as possible
- * to getnstimeofday() in order to be as faithful as possible to the time
- * specified.
- */
- when = (when + sgi_clock_period - 1) / sgi_clock_period + rtc_time();
- period = (period + sgi_clock_period - 1) / sgi_clock_period;
-
- /*
- * We are allocating a local SHub comparator. If we would be moved to another
- * cpu then another SHub may be local to us. Prohibit that by switching off
- * preemption.
- */
- preempt_disable();
-
- nodeid = cpu_to_node(smp_processor_id());
-
- /* Lock the node timer structure */
- spin_lock_irqsave(&timers[nodeid].lock, irqflags);
-
- base->timer = timr;
- base->cpu = smp_processor_id();
-
- timr->it.mmtimer.clock = TIMER_SET;
- timr->it.mmtimer.node = nodeid;
- timr->it.mmtimer.incr = period;
- timr->it.mmtimer.expires = when;
-
- n = timers[nodeid].next;
-
- /* Add the new struct mmtimer to node's timer list */
- mmtimer_add_list(base);
-
- if (timers[nodeid].next == n) {
- /* No need to reprogram comparator for now */
- spin_unlock_irqrestore(&timers[nodeid].lock, irqflags);
- preempt_enable();
- return err;
- }
-
- /* We need to reprogram the comparator */
- if (n)
- mmtimer_disable_int(cnodeid_to_nasid(nodeid), COMPARATOR);
-
- mmtimer_set_next_timer(nodeid);
-
- /* Unlock the node timer structure */
- spin_unlock_irqrestore(&timers[nodeid].lock, irqflags);
-
- preempt_enable();
-
- return err;
-}
-
-static int sgi_clock_getres(const clockid_t which_clock, struct timespec64 *tp)
-{
- tp->tv_sec = 0;
- tp->tv_nsec = sgi_clock_period;
- return 0;
-}
-
-static struct k_clock sgi_clock = {
- .clock_set = sgi_clock_set,
- .clock_get = sgi_clock_get,
- .clock_getres = sgi_clock_getres,
- .timer_create = sgi_timer_create,
- .timer_set = sgi_timer_set,
- .timer_del = sgi_timer_del,
- .timer_get = sgi_timer_get
-};
-
-/**
- * mmtimer_init - device initialization routine
- *
- * Does initial setup for the mmtimer device.
- */
-static int __init mmtimer_init(void)
-{
- cnodeid_t node, maxn = -1;
-
- if (!ia64_platform_is("sn2"))
- return 0;
-
- /*
- * Sanity check the cycles/sec variable
- */
- if (sn_rtc_cycles_per_second < 100000) {
- printk(KERN_ERR "%s: unable to determine clock frequency\n",
- MMTIMER_NAME);
- goto out1;
- }
-
- mmtimer_femtoperiod = ((unsigned long)1E15 + sn_rtc_cycles_per_second /
- 2) / sn_rtc_cycles_per_second;
-
- if (request_irq(SGI_MMTIMER_VECTOR, mmtimer_interrupt, IRQF_PERCPU, MMTIMER_NAME, NULL)) {
- printk(KERN_WARNING "%s: unable to allocate interrupt.",
- MMTIMER_NAME);
- goto out1;
- }
-
- if (misc_register(&mmtimer_miscdev)) {
- printk(KERN_ERR "%s: failed to register device\n",
- MMTIMER_NAME);
- goto out2;
- }
-
- /* Get max numbered node, calculate slots needed */
- for_each_online_node(node) {
- maxn = node;
- }
- maxn++;
-
- /* Allocate list of node ptrs to mmtimer_t's */
- timers = kzalloc(sizeof(struct mmtimer_node)*maxn, GFP_KERNEL);
- if (!timers) {
- printk(KERN_ERR "%s: failed to allocate memory for device\n",
- MMTIMER_NAME);
- goto out3;
- }
-
- /* Initialize struct mmtimer's for each online node */
- for_each_online_node(node) {
- spin_lock_init(&timers[node].lock);
- tasklet_init(&timers[node].tasklet, mmtimer_tasklet,
- (unsigned long) node);
- }
-
- sgi_clock_period = NSEC_PER_SEC / sn_rtc_cycles_per_second;
- posix_timers_register_clock(CLOCK_SGI_CYCLE, &sgi_clock);
-
- printk(KERN_INFO "%s: v%s, %ld MHz\n", MMTIMER_DESC, MMTIMER_VERSION,
- sn_rtc_cycles_per_second/(unsigned long)1E6);
-
- return 0;
-
-out3:
- misc_deregister(&mmtimer_miscdev);
-out2:
- free_irq(SGI_MMTIMER_VECTOR, NULL);
-out1:
- return -1;
-}
-
-module_init(mmtimer_init);
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index 545d541..88818a4 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -1,22 +1,16 @@
menu "Clock Source drivers"
depends on !ARCH_USES_GETTIMEOFFSET
-config CLKSRC_OF
+config TIMER_OF
bool
- select CLKSRC_PROBE
-
-config CLKEVT_OF
- bool
- select CLKEVT_PROBE
-
-config CLKSRC_ACPI
- bool
- select CLKSRC_PROBE
+ depends on GENERIC_CLOCKEVENTS
+ select TIMER_PROBE
-config CLKSRC_PROBE
+config TIMER_ACPI
bool
+ select TIMER_PROBE
-config CLKEVT_PROBE
+config TIMER_PROBE
bool
config CLKSRC_I8253
@@ -65,14 +59,14 @@ config DW_APB_TIMER
config DW_APB_TIMER_OF
bool
select DW_APB_TIMER
- select CLKSRC_OF
+ select TIMER_OF
config FTTMR010_TIMER
bool "Faraday Technology timer driver" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
depends on HAS_IOMEM
select CLKSRC_MMIO
- select CLKSRC_OF
+ select TIMER_OF
select MFD_SYSCON
help
Enables support for the Faraday Technology timer block
@@ -81,7 +75,7 @@ config FTTMR010_TIMER
config ROCKCHIP_TIMER
bool "Rockchip timer driver" if COMPILE_TEST
depends on ARM || ARM64
- select CLKSRC_OF
+ select TIMER_OF
select CLKSRC_MMIO
help
Enables the support for the rockchip timer driver.
@@ -89,7 +83,7 @@ config ROCKCHIP_TIMER
config ARMADA_370_XP_TIMER
bool "Armada 370 and XP timer driver" if COMPILE_TEST
depends on ARM
- select CLKSRC_OF
+ select TIMER_OF
select CLKSRC_MMIO
help
Enables the support for the Armada 370 and XP timer driver.
@@ -104,7 +98,7 @@ config MESON6_TIMER
config ORION_TIMER
bool "Orion timer driver" if COMPILE_TEST
depends on ARM
- select CLKSRC_OF
+ select TIMER_OF
select CLKSRC_MMIO
help
Enables the support for the Orion timer driver
@@ -114,6 +108,7 @@ config SUN4I_TIMER
depends on GENERIC_CLOCKEVENTS
depends on HAS_IOMEM
select CLKSRC_MMIO
+ select TIMER_OF
help
Enables support for the Sun4i timer.
@@ -148,7 +143,7 @@ config ASM9260_TIMER
bool "ASM9260 timer driver" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
select CLKSRC_MMIO
- select CLKSRC_OF
+ select TIMER_OF
help
Enables support for the ASM9260 timer.
@@ -188,13 +183,6 @@ config ATLAS7_TIMER
help
Enables support for the Atlas7 timer.
-config MOXART_TIMER
- bool "Moxart timer driver" if COMPILE_TEST
- depends on GENERIC_CLOCKEVENTS
- select CLKSRC_MMIO
- help
- Enables support for the Moxart timer.
-
config MXS_TIMER
bool "Mxs timer driver" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
@@ -261,21 +249,21 @@ config CLKSRC_LPC32XX
depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
depends on ARM
select CLKSRC_MMIO
- select CLKSRC_OF
+ select TIMER_OF
help
Support for the LPC32XX clocksource.
config CLKSRC_PISTACHIO
bool "Clocksource for Pistachio SoC" if COMPILE_TEST
depends on HAS_IOMEM
- select CLKSRC_OF
+ select TIMER_OF
help
Enables the clocksource for the Pistachio SoC.
config CLKSRC_TI_32K
bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
depends on GENERIC_SCHED_CLOCK
- select CLKSRC_OF if OF
+ select TIMER_OF if OF
help
This option enables support for Texas Instruments 32.768 Hz clocksource
available on many OMAP-like platforms.
@@ -284,7 +272,7 @@ config CLKSRC_NPS
bool "NPS400 clocksource driver" if COMPILE_TEST
depends on !PHYS_ADDR_T_64BIT
select CLKSRC_MMIO
- select CLKSRC_OF if OF
+ select TIMER_OF if OF
help
NPS400 clocksource support.
Got 64 bit counter with update rate up to 1000MHz.
@@ -299,12 +287,12 @@ config CLKSRC_MPS2
bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
depends on GENERIC_SCHED_CLOCK
select CLKSRC_MMIO
- select CLKSRC_OF
+ select TIMER_OF
config ARC_TIMERS
bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
- select CLKSRC_OF
+ select TIMER_OF
help
These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
(ARC700 as well as ARC HS38).
@@ -314,7 +302,7 @@ config ARC_TIMERS_64BIT
bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
depends on ARC_TIMERS
- select CLKSRC_OF
+ select TIMER_OF
help
This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP)
RTC is implemented inside the core, while GFRC sits outside the core in
@@ -323,8 +311,8 @@ config ARC_TIMERS_64BIT
config ARM_ARCH_TIMER
bool
- select CLKSRC_OF if OF
- select CLKSRC_ACPI if ACPI
+ select TIMER_OF if OF
+ select TIMER_ACPI if ACPI
config ARM_ARCH_TIMER_EVTSTREAM
bool "Enable ARM architected timer event stream generation by default"
@@ -381,7 +369,7 @@ config ARM64_ERRATUM_858921
config ARM_GLOBAL_TIMER
bool "Support for the ARM global timer" if COMPILE_TEST
- select CLKSRC_OF if OF
+ select TIMER_OF if OF
depends on ARM
help
This options enables support for the ARM global timer unit
@@ -390,7 +378,7 @@ config ARM_TIMER_SP804
bool "Support for Dual Timer SP804 module"
depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
select CLKSRC_MMIO
- select CLKSRC_OF if OF
+ select TIMER_OF if OF
config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
bool
@@ -401,19 +389,19 @@ config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
config ARMV7M_SYSTICK
bool "Support for the ARMv7M system time" if COMPILE_TEST
- select CLKSRC_OF if OF
+ select TIMER_OF if OF
select CLKSRC_MMIO
help
This options enables support for the ARMv7M system timer unit
config ATMEL_PIT
- select CLKSRC_OF if OF
+ select TIMER_OF if OF
def_bool SOC_AT91SAM9 || SOC_SAMA5
config ATMEL_ST
bool "Atmel ST timer support" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
- select CLKSRC_OF
+ select TIMER_OF
select MFD_SYSCON
help
Support for the Atmel ST timer.
@@ -456,7 +444,7 @@ config VF_PIT_TIMER
config OXNAS_RPS_TIMER
bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
- select CLKSRC_OF
+ select TIMER_OF
select CLKSRC_MMIO
help
This enables support for the Oxford Semiconductor OXNAS RPS timers.
@@ -467,7 +455,7 @@ config SYS_SUPPORTS_SH_CMT
config MTK_TIMER
bool "Mediatek timer driver" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
- select CLKSRC_OF
+ select TIMER_OF
select CLKSRC_MMIO
help
Support for Mediatek timer driver.
@@ -540,7 +528,7 @@ config EM_TIMER_STI
config CLKSRC_QCOM
bool "Qualcomm MSM timer" if COMPILE_TEST
depends on ARM
- select CLKSRC_OF
+ select TIMER_OF
help
This enables the clocksource and the per CPU clockevent driver for the
Qualcomm SoCs.
@@ -548,7 +536,7 @@ config CLKSRC_QCOM
config CLKSRC_VERSATILE
bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
- select CLKSRC_OF
+ select TIMER_OF
default y if MFD_VEXPRESS_SYSREG
help
This option enables clock source based on free running
@@ -559,12 +547,12 @@ config CLKSRC_VERSATILE
config CLKSRC_MIPS_GIC
bool
depends on MIPS_GIC
- select CLKSRC_OF
+ select TIMER_OF
config CLKSRC_TANGO_XTAL
bool "Clocksource for Tango SoC" if COMPILE_TEST
depends on ARM
- select CLKSRC_OF
+ select TIMER_OF
select CLKSRC_MMIO
help
This enables the clocksource for Tango SoC
@@ -605,7 +593,7 @@ config CLKSRC_IMX_GPT
config CLKSRC_ST_LPC
bool "Low power clocksource found in the LPC" if COMPILE_TEST
- select CLKSRC_OF if OF
+ select TIMER_OF if OF
depends on HAS_IOMEM
select CLKSRC_MMIO
help
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index 2b5b56a..72bfd00 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -1,5 +1,5 @@
-obj-$(CONFIG_CLKSRC_PROBE) += clksrc-probe.o
-obj-$(CONFIG_CLKEVT_PROBE) += clkevt-probe.o
+obj-$(CONFIG_TIMER_OF) += timer-of.o
+obj-$(CONFIG_TIMER_PROBE) += timer-probe.o
obj-$(CONFIG_ATMEL_PIT) += timer-atmel-pit.o
obj-$(CONFIG_ATMEL_ST) += timer-atmel-st.o
obj-$(CONFIG_ATMEL_TCB_CLKSRC) += tcb_clksrc.o
@@ -26,7 +26,6 @@ obj-$(CONFIG_ORION_TIMER) += time-orion.o
obj-$(CONFIG_BCM2835_TIMER) += bcm2835_timer.o
obj-$(CONFIG_CLPS711X_TIMER) += clps711x-timer.o
obj-$(CONFIG_ATLAS7_TIMER) += timer-atlas7.o
-obj-$(CONFIG_MOXART_TIMER) += moxart_timer.o
obj-$(CONFIG_MXS_TIMER) += mxs_timer.o
obj-$(CONFIG_CLKSRC_PXA) += pxa_timer.o
obj-$(CONFIG_PRIMA2_TIMER) += timer-prima2.o
diff --git a/drivers/clocksource/arc_timer.c b/drivers/clocksource/arc_timer.c
index 2164973..4927355 100644
--- a/drivers/clocksource/arc_timer.c
+++ b/drivers/clocksource/arc_timer.c
@@ -99,7 +99,7 @@ static int __init arc_cs_setup_gfrc(struct device_node *node)
return clocksource_register_hz(&arc_counter_gfrc, arc_timer_freq);
}
-CLOCKSOURCE_OF_DECLARE(arc_gfrc, "snps,archs-timer-gfrc", arc_cs_setup_gfrc);
+TIMER_OF_DECLARE(arc_gfrc, "snps,archs-timer-gfrc", arc_cs_setup_gfrc);
#define AUX_RTC_CTRL 0x103
#define AUX_RTC_LOW 0x104
@@ -158,7 +158,7 @@ static int __init arc_cs_setup_rtc(struct device_node *node)
return clocksource_register_hz(&arc_counter_rtc, arc_timer_freq);
}
-CLOCKSOURCE_OF_DECLARE(arc_rtc, "snps,archs-timer-rtc", arc_cs_setup_rtc);
+TIMER_OF_DECLARE(arc_rtc, "snps,archs-timer-rtc", arc_cs_setup_rtc);
#endif
@@ -333,4 +333,4 @@ static int __init arc_of_timer_init(struct device_node *np)
return ret;
}
-CLOCKSOURCE_OF_DECLARE(arc_clkevt, "snps,arc-timer", arc_of_timer_init);
+TIMER_OF_DECLARE(arc_clkevt, "snps,arc-timer", arc_of_timer_init);
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index 8b5c300..aae87c4 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -1194,8 +1194,8 @@ static int __init arch_timer_of_init(struct device_node *np)
return arch_timer_common_init();
}
-CLOCKSOURCE_OF_DECLARE(armv7_arch_timer, "arm,armv7-timer", arch_timer_of_init);
-CLOCKSOURCE_OF_DECLARE(armv8_arch_timer, "arm,armv8-timer", arch_timer_of_init);
+TIMER_OF_DECLARE(armv7_arch_timer, "arm,armv7-timer", arch_timer_of_init);
+TIMER_OF_DECLARE(armv8_arch_timer, "arm,armv8-timer", arch_timer_of_init);
static u32 __init
arch_timer_mem_frame_get_cntfrq(struct arch_timer_mem_frame *frame)
@@ -1382,7 +1382,7 @@ out:
kfree(timer_mem);
return ret;
}
-CLOCKSOURCE_OF_DECLARE(armv7_arch_timer_mem, "arm,armv7-timer-mem",
+TIMER_OF_DECLARE(armv7_arch_timer_mem, "arm,armv7-timer-mem",
arch_timer_mem_of_init);
#ifdef CONFIG_ACPI_GTDT
@@ -1516,5 +1516,5 @@ static int __init arch_timer_acpi_init(struct acpi_table_header *table)
return arch_timer_common_init();
}
-CLOCKSOURCE_ACPI_DECLARE(arch_timer, ACPI_SIG_GTDT, arch_timer_acpi_init);
+TIMER_ACPI_DECLARE(arch_timer, ACPI_SIG_GTDT, arch_timer_acpi_init);
#endif
diff --git a/drivers/clocksource/arm_global_timer.c b/drivers/clocksource/arm_global_timer.c
index 123ed20..095bb96 100644
--- a/drivers/clocksource/arm_global_timer.c
+++ b/drivers/clocksource/arm_global_timer.c
@@ -339,5 +339,5 @@ out_unmap:
}
/* Only tested on r2p2 and r3p0 */
-CLOCKSOURCE_OF_DECLARE(arm_gt, "arm,cortex-a9-global-timer",
+TIMER_OF_DECLARE(arm_gt, "arm,cortex-a9-global-timer",
global_timer_of_register);
diff --git a/drivers/clocksource/armv7m_systick.c b/drivers/clocksource/armv7m_systick.c
index a315491..ac046d6 100644
--- a/drivers/clocksource/armv7m_systick.c
+++ b/drivers/clocksource/armv7m_systick.c
@@ -82,5 +82,5 @@ out_unmap:
return ret;
}
-CLOCKSOURCE_OF_DECLARE(arm_systick, "arm,armv7m-systick",
+TIMER_OF_DECLARE(arm_systick, "arm,armv7m-systick",
system_timer_of_register);
diff --git a/drivers/clocksource/asm9260_timer.c b/drivers/clocksource/asm9260_timer.c
index c678083..38cd2fe 100644
--- a/drivers/clocksource/asm9260_timer.c
+++ b/drivers/clocksource/asm9260_timer.c
@@ -238,5 +238,5 @@ static int __init asm9260_timer_init(struct device_node *np)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(asm9260_timer, "alphascale,asm9260-timer",
+TIMER_OF_DECLARE(asm9260_timer, "alphascale,asm9260-timer",
asm9260_timer_init);
diff --git a/drivers/clocksource/bcm2835_timer.c b/drivers/clocksource/bcm2835_timer.c
index dce4430..82828d3 100644
--- a/drivers/clocksource/bcm2835_timer.c
+++ b/drivers/clocksource/bcm2835_timer.c
@@ -148,5 +148,5 @@ err_iounmap:
iounmap(base);
return ret;
}
-CLOCKSOURCE_OF_DECLARE(bcm2835, "brcm,bcm2835-system-timer",
+TIMER_OF_DECLARE(bcm2835, "brcm,bcm2835-system-timer",
bcm2835_timer_init);
diff --git a/drivers/clocksource/bcm_kona_timer.c b/drivers/clocksource/bcm_kona_timer.c
index fda5e147..5c40be9 100644
--- a/drivers/clocksource/bcm_kona_timer.c
+++ b/drivers/clocksource/bcm_kona_timer.c
@@ -198,9 +198,9 @@ static int __init kona_timer_init(struct device_node *node)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(brcm_kona, "brcm,kona-timer", kona_timer_init);
+TIMER_OF_DECLARE(brcm_kona, "brcm,kona-timer", kona_timer_init);
/*
* bcm,kona-timer is deprecated by brcm,kona-timer
* being kept here for driver compatibility
*/
-CLOCKSOURCE_OF_DECLARE(bcm_kona, "bcm,kona-timer", kona_timer_init);
+TIMER_OF_DECLARE(bcm_kona, "bcm,kona-timer", kona_timer_init);
diff --git a/drivers/clocksource/cadence_ttc_timer.c b/drivers/clocksource/cadence_ttc_timer.c
index 8e64b84..29d5175 100644
--- a/drivers/clocksource/cadence_ttc_timer.c
+++ b/drivers/clocksource/cadence_ttc_timer.c
@@ -540,4 +540,4 @@ static int __init ttc_timer_init(struct device_node *timer)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(ttc, "cdns,ttc", ttc_timer_init);
+TIMER_OF_DECLARE(ttc, "cdns,ttc", ttc_timer_init);
diff --git a/drivers/clocksource/clkevt-probe.c b/drivers/clocksource/clkevt-probe.c
deleted file mode 100644
index eb89b50..0000000
--- a/drivers/clocksource/clkevt-probe.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Copyright (c) 2016, Linaro Ltd. All rights reserved.
- * Daniel Lezcano <daniel.lezcano@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/init.h>
-#include <linux/of.h>
-#include <linux/clockchips.h>
-
-extern struct of_device_id __clkevt_of_table[];
-
-static const struct of_device_id __clkevt_of_table_sentinel
- __used __section(__clkevt_of_table_end);
-
-int __init clockevent_probe(void)
-{
- struct device_node *np;
- const struct of_device_id *match;
- of_init_fn_1_ret init_func;
- int ret, clockevents = 0;
-
- for_each_matching_node_and_match(np, __clkevt_of_table, &match) {
- if (!of_device_is_available(np))
- continue;
-
- init_func = match->data;
-
- ret = init_func(np);
- if (ret) {
- pr_warn("Failed to initialize '%s' (%d)\n",
- np->name, ret);
- continue;
- }
-
- clockevents++;
- }
-
- if (!clockevents) {
- pr_crit("%s: no matching clockevent found\n", __func__);
- return -ENODEV;
- }
-
- return 0;
-}
diff --git a/drivers/clocksource/clksrc-dbx500-prcmu.c b/drivers/clocksource/clksrc-dbx500-prcmu.c
index c69e277..c1b96dc 100644
--- a/drivers/clocksource/clksrc-dbx500-prcmu.c
+++ b/drivers/clocksource/clksrc-dbx500-prcmu.c
@@ -86,5 +86,5 @@ static int __init clksrc_dbx500_prcmu_init(struct device_node *node)
#endif
return clocksource_register_hz(&clocksource_dbx500_prcmu, RATE_32K);
}
-CLOCKSOURCE_OF_DECLARE(dbx500_prcmu, "stericsson,db8500-prcmu-timer-4",
+TIMER_OF_DECLARE(dbx500_prcmu, "stericsson,db8500-prcmu-timer-4",
clksrc_dbx500_prcmu_init);
diff --git a/drivers/clocksource/clksrc_st_lpc.c b/drivers/clocksource/clksrc_st_lpc.c
index 03cc492..a1d01eb 100644
--- a/drivers/clocksource/clksrc_st_lpc.c
+++ b/drivers/clocksource/clksrc_st_lpc.c
@@ -132,4 +132,4 @@ static int __init st_clksrc_of_register(struct device_node *np)
return ret;
}
-CLOCKSOURCE_OF_DECLARE(ddata, "st,stih407-lpc", st_clksrc_of_register);
+TIMER_OF_DECLARE(ddata, "st,stih407-lpc", st_clksrc_of_register);
diff --git a/drivers/clocksource/clps711x-timer.c b/drivers/clocksource/clps711x-timer.c
index 24db6d6..a8dd805 100644
--- a/drivers/clocksource/clps711x-timer.c
+++ b/drivers/clocksource/clps711x-timer.c
@@ -103,7 +103,7 @@ void __init clps711x_clksrc_init(void __iomem *tc1_base, void __iomem *tc2_base,
BUG_ON(_clps711x_clkevt_init(tc2, tc2_base, irq));
}
-#ifdef CONFIG_CLKSRC_OF
+#ifdef CONFIG_TIMER_OF
static int __init clps711x_timer_init(struct device_node *np)
{
unsigned int irq = irq_of_parse_and_map(np, 0);
@@ -119,5 +119,5 @@ static int __init clps711x_timer_init(struct device_node *np)
return -EINVAL;
}
}
-CLOCKSOURCE_OF_DECLARE(clps711x, "cirrus,ep7209-timer", clps711x_timer_init);
+TIMER_OF_DECLARE(clps711x, "cirrus,ep7209-timer", clps711x_timer_init);
#endif
diff --git a/drivers/clocksource/dw_apb_timer_of.c b/drivers/clocksource/dw_apb_timer_of.c
index aee6c0d..69866cd 100644
--- a/drivers/clocksource/dw_apb_timer_of.c
+++ b/drivers/clocksource/dw_apb_timer_of.c
@@ -167,7 +167,7 @@ static int __init dw_apb_timer_init(struct device_node *timer)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(pc3x2_timer, "picochip,pc3x2-timer", dw_apb_timer_init);
-CLOCKSOURCE_OF_DECLARE(apb_timer_osc, "snps,dw-apb-timer-osc", dw_apb_timer_init);
-CLOCKSOURCE_OF_DECLARE(apb_timer_sp, "snps,dw-apb-timer-sp", dw_apb_timer_init);
-CLOCKSOURCE_OF_DECLARE(apb_timer, "snps,dw-apb-timer", dw_apb_timer_init);
+TIMER_OF_DECLARE(pc3x2_timer, "picochip,pc3x2-timer", dw_apb_timer_init);
+TIMER_OF_DECLARE(apb_timer_osc, "snps,dw-apb-timer-osc", dw_apb_timer_init);
+TIMER_OF_DECLARE(apb_timer_sp, "snps,dw-apb-timer-sp", dw_apb_timer_init);
+TIMER_OF_DECLARE(apb_timer, "snps,dw-apb-timer", dw_apb_timer_init);
diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c
index 670ff0f..7a244b6 100644
--- a/drivers/clocksource/exynos_mct.c
+++ b/drivers/clocksource/exynos_mct.c
@@ -610,5 +610,5 @@ static int __init mct_init_ppi(struct device_node *np)
{
return mct_init_dt(np, MCT_INT_PPI);
}
-CLOCKSOURCE_OF_DECLARE(exynos4210, "samsung,exynos4210-mct", mct_init_spi);
-CLOCKSOURCE_OF_DECLARE(exynos4412, "samsung,exynos4412-mct", mct_init_ppi);
+TIMER_OF_DECLARE(exynos4210, "samsung,exynos4210-mct", mct_init_spi);
+TIMER_OF_DECLARE(exynos4412, "samsung,exynos4412-mct", mct_init_ppi);
diff --git a/drivers/clocksource/fsl_ftm_timer.c b/drivers/clocksource/fsl_ftm_timer.c
index 738515b..3ee7e6f 100644
--- a/drivers/clocksource/fsl_ftm_timer.c
+++ b/drivers/clocksource/fsl_ftm_timer.c
@@ -329,13 +329,13 @@ static int __init ftm_timer_init(struct device_node *np)
priv->clkevt_base = of_iomap(np, 0);
if (!priv->clkevt_base) {
pr_err("ftm: unable to map event timer registers\n");
- goto err;
+ goto err_clkevt;
}
priv->clksrc_base = of_iomap(np, 1);
if (!priv->clksrc_base) {
pr_err("ftm: unable to map source timer registers\n");
- goto err;
+ goto err_clksrc;
}
ret = -EINVAL;
@@ -366,7 +366,11 @@ static int __init ftm_timer_init(struct device_node *np)
return 0;
err:
+ iounmap(priv->clksrc_base);
+err_clksrc:
+ iounmap(priv->clkevt_base);
+err_clkevt:
kfree(priv);
return ret;
}
-CLOCKSOURCE_OF_DECLARE(flextimer, "fsl,ftm-timer", ftm_timer_init);
+TIMER_OF_DECLARE(flextimer, "fsl,ftm-timer", ftm_timer_init);
diff --git a/drivers/clocksource/h8300_timer16.c b/drivers/clocksource/h8300_timer16.c
index 5b27fb9..dfbd4f8 100644
--- a/drivers/clocksource/h8300_timer16.c
+++ b/drivers/clocksource/h8300_timer16.c
@@ -187,5 +187,5 @@ free_clk:
return ret;
}
-CLOCKSOURCE_OF_DECLARE(h8300_16bit, "renesas,16bit-timer",
+TIMER_OF_DECLARE(h8300_16bit, "renesas,16bit-timer",
h8300_16timer_init);
diff --git a/drivers/clocksource/h8300_timer8.c b/drivers/clocksource/h8300_timer8.c
index 804c489..f6ffb0c 100644
--- a/drivers/clocksource/h8300_timer8.c
+++ b/drivers/clocksource/h8300_timer8.c
@@ -207,4 +207,4 @@ free_clk:
return ret;
}
-CLOCKSOURCE_OF_DECLARE(h8300_8bit, "renesas,8bit-timer", h8300_8timer_init);
+TIMER_OF_DECLARE(h8300_8bit, "renesas,8bit-timer", h8300_8timer_init);
diff --git a/drivers/clocksource/h8300_tpu.c b/drivers/clocksource/h8300_tpu.c
index 72e1cf2..45a8d17 100644
--- a/drivers/clocksource/h8300_tpu.c
+++ b/drivers/clocksource/h8300_tpu.c
@@ -154,4 +154,4 @@ free_clk:
return ret;
}
-CLOCKSOURCE_OF_DECLARE(h8300_tpu, "renesas,tpu", h8300_tpu_init);
+TIMER_OF_DECLARE(h8300_tpu, "renesas,tpu", h8300_tpu_init);
diff --git a/drivers/clocksource/jcore-pit.c b/drivers/clocksource/jcore-pit.c
index 7c61226..5d3d88e 100644
--- a/drivers/clocksource/jcore-pit.c
+++ b/drivers/clocksource/jcore-pit.c
@@ -246,4 +246,4 @@ static int __init jcore_pit_init(struct device_node *node)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(jcore_pit, "jcore,pit", jcore_pit_init);
+TIMER_OF_DECLARE(jcore_pit, "jcore,pit", jcore_pit_init);
diff --git a/drivers/clocksource/meson6_timer.c b/drivers/clocksource/meson6_timer.c
index 39d21f6..92f2099 100644
--- a/drivers/clocksource/meson6_timer.c
+++ b/drivers/clocksource/meson6_timer.c
@@ -174,5 +174,5 @@ static int __init meson6_timer_init(struct device_node *node)
1, 0xfffe);
return 0;
}
-CLOCKSOURCE_OF_DECLARE(meson6, "amlogic,meson6-timer",
+TIMER_OF_DECLARE(meson6, "amlogic,meson6-timer",
meson6_timer_init);
diff --git a/drivers/clocksource/mips-gic-timer.c b/drivers/clocksource/mips-gic-timer.c
index 3f52ee2..17b861e 100644
--- a/drivers/clocksource/mips-gic-timer.c
+++ b/drivers/clocksource/mips-gic-timer.c
@@ -167,10 +167,11 @@ static int __init gic_clocksource_of_init(struct device_node *node)
clk = of_clk_get(node, 0);
if (!IS_ERR(clk)) {
- if (clk_prepare_enable(clk) < 0) {
+ ret = clk_prepare_enable(clk);
+ if (ret < 0) {
pr_err("GIC failed to enable clock\n");
clk_put(clk);
- return PTR_ERR(clk);
+ return ret;
}
gic_frequency = clk_get_rate(clk);
@@ -200,5 +201,5 @@ static int __init gic_clocksource_of_init(struct device_node *node)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(mips_gic_timer, "mti,gic-timer",
+TIMER_OF_DECLARE(mips_gic_timer, "mti,gic-timer",
gic_clocksource_of_init);
diff --git a/drivers/clocksource/moxart_timer.c b/drivers/clocksource/moxart_timer.c
deleted file mode 100644
index 7f34306..0000000
--- a/drivers/clocksource/moxart_timer.c
+++ /dev/null
@@ -1,256 +0,0 @@
-/*
- * MOXA ART SoCs timer handling.
- *
- * Copyright (C) 2013 Jonas Jensen
- *
- * Jonas Jensen <jonas.jensen@gmail.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/clk.h>
-#include <linux/clockchips.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/irqreturn.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/io.h>
-#include <linux/clocksource.h>
-#include <linux/bitops.h>
-#include <linux/slab.h>
-
-#define TIMER1_BASE 0x00
-#define TIMER2_BASE 0x10
-#define TIMER3_BASE 0x20
-
-#define REG_COUNT 0x0 /* writable */
-#define REG_LOAD 0x4
-#define REG_MATCH1 0x8
-#define REG_MATCH2 0xC
-
-#define TIMER_CR 0x30
-#define TIMER_INTR_STATE 0x34
-#define TIMER_INTR_MASK 0x38
-
-/*
- * Moxart TIMER_CR flags:
- *
- * MOXART_CR_*_CLOCK 0: PCLK, 1: EXT1CLK
- * MOXART_CR_*_INT overflow interrupt enable bit
- */
-#define MOXART_CR_1_ENABLE BIT(0)
-#define MOXART_CR_1_CLOCK BIT(1)
-#define MOXART_CR_1_INT BIT(2)
-#define MOXART_CR_2_ENABLE BIT(3)
-#define MOXART_CR_2_CLOCK BIT(4)
-#define MOXART_CR_2_INT BIT(5)
-#define MOXART_CR_3_ENABLE BIT(6)
-#define MOXART_CR_3_CLOCK BIT(7)
-#define MOXART_CR_3_INT BIT(8)
-#define MOXART_CR_COUNT_UP BIT(9)
-
-#define MOXART_TIMER1_ENABLE (MOXART_CR_2_ENABLE | MOXART_CR_1_ENABLE)
-#define MOXART_TIMER1_DISABLE (MOXART_CR_2_ENABLE)
-
-/*
- * The ASpeed variant of the IP block has a different layout
- * for the control register
- */
-#define ASPEED_CR_1_ENABLE BIT(0)
-#define ASPEED_CR_1_CLOCK BIT(1)
-#define ASPEED_CR_1_INT BIT(2)
-#define ASPEED_CR_2_ENABLE BIT(4)
-#define ASPEED_CR_2_CLOCK BIT(5)
-#define ASPEED_CR_2_INT BIT(6)
-#define ASPEED_CR_3_ENABLE BIT(8)
-#define ASPEED_CR_3_CLOCK BIT(9)
-#define ASPEED_CR_3_INT BIT(10)
-
-#define ASPEED_TIMER1_ENABLE (ASPEED_CR_2_ENABLE | ASPEED_CR_1_ENABLE)
-#define ASPEED_TIMER1_DISABLE (ASPEED_CR_2_ENABLE)
-
-struct moxart_timer {
- void __iomem *base;
- unsigned int t1_disable_val;
- unsigned int t1_enable_val;
- unsigned int count_per_tick;
- struct clock_event_device clkevt;
-};
-
-static inline struct moxart_timer *to_moxart(struct clock_event_device *evt)
-{
- return container_of(evt, struct moxart_timer, clkevt);
-}
-
-static inline void moxart_disable(struct clock_event_device *evt)
-{
- struct moxart_timer *timer = to_moxart(evt);
-
- writel(timer->t1_disable_val, timer->base + TIMER_CR);
-}
-
-static inline void moxart_enable(struct clock_event_device *evt)
-{
- struct moxart_timer *timer = to_moxart(evt);
-
- writel(timer->t1_enable_val, timer->base + TIMER_CR);
-}
-
-static int moxart_shutdown(struct clock_event_device *evt)
-{
- moxart_disable(evt);
- return 0;
-}
-
-static int moxart_set_oneshot(struct clock_event_device *evt)
-{
- moxart_disable(evt);
- writel(~0, to_moxart(evt)->base + TIMER1_BASE + REG_LOAD);
- return 0;
-}
-
-static int moxart_set_periodic(struct clock_event_device *evt)
-{
- struct moxart_timer *timer = to_moxart(evt);
-
- moxart_disable(evt);
- writel(timer->count_per_tick, timer->base + TIMER1_BASE + REG_LOAD);
- writel(0, timer->base + TIMER1_BASE + REG_MATCH1);
- moxart_enable(evt);
- return 0;
-}
-
-static int moxart_clkevt_next_event(unsigned long cycles,
- struct clock_event_device *evt)
-{
- struct moxart_timer *timer = to_moxart(evt);
- u32 u;
-
- moxart_disable(evt);
-
- u = readl(timer->base + TIMER1_BASE + REG_COUNT) - cycles;
- writel(u, timer->base + TIMER1_BASE + REG_MATCH1);
-
- moxart_enable(evt);
-
- return 0;
-}
-
-static irqreturn_t moxart_timer_interrupt(int irq, void *dev_id)
-{
- struct clock_event_device *evt = dev_id;
- evt->event_handler(evt);
- return IRQ_HANDLED;
-}
-
-static int __init moxart_timer_init(struct device_node *node)
-{
- int ret, irq;
- unsigned long pclk;
- struct clk *clk;
- struct moxart_timer *timer;
-
- timer = kzalloc(sizeof(*timer), GFP_KERNEL);
- if (!timer)
- return -ENOMEM;
-
- timer->base = of_iomap(node, 0);
- if (!timer->base) {
- pr_err("%s: of_iomap failed\n", node->full_name);
- ret = -ENXIO;
- goto out_free;
- }
-
- irq = irq_of_parse_and_map(node, 0);
- if (irq <= 0) {
- pr_err("%s: irq_of_parse_and_map failed\n", node->full_name);
- ret = -EINVAL;
- goto out_unmap;
- }
-
- clk = of_clk_get(node, 0);
- if (IS_ERR(clk)) {
- pr_err("%s: of_clk_get failed\n", node->full_name);
- ret = PTR_ERR(clk);
- goto out_unmap;
- }
-
- pclk = clk_get_rate(clk);
-
- if (of_device_is_compatible(node, "moxa,moxart-timer")) {
- timer->t1_enable_val = MOXART_TIMER1_ENABLE;
- timer->t1_disable_val = MOXART_TIMER1_DISABLE;
- } else if (of_device_is_compatible(node, "aspeed,ast2400-timer")) {
- timer->t1_enable_val = ASPEED_TIMER1_ENABLE;
- timer->t1_disable_val = ASPEED_TIMER1_DISABLE;
- } else {
- pr_err("%s: unknown platform\n", node->full_name);
- ret = -EINVAL;
- goto out_unmap;
- }
-
- timer->count_per_tick = DIV_ROUND_CLOSEST(pclk, HZ);
-
- timer->clkevt.name = node->name;
- timer->clkevt.rating = 200;
- timer->clkevt.features = CLOCK_EVT_FEAT_PERIODIC |
- CLOCK_EVT_FEAT_ONESHOT;
- timer->clkevt.set_state_shutdown = moxart_shutdown;
- timer->clkevt.set_state_periodic = moxart_set_periodic;
- timer->clkevt.set_state_oneshot = moxart_set_oneshot;
- timer->clkevt.tick_resume = moxart_set_oneshot;
- timer->clkevt.set_next_event = moxart_clkevt_next_event;
- timer->clkevt.cpumask = cpumask_of(0);
- timer->clkevt.irq = irq;
-
- ret = clocksource_mmio_init(timer->base + TIMER2_BASE + REG_COUNT,
- "moxart_timer", pclk, 200, 32,
- clocksource_mmio_readl_down);
- if (ret) {
- pr_err("%s: clocksource_mmio_init failed\n", node->full_name);
- goto out_unmap;
- }
-
- ret = request_irq(irq, moxart_timer_interrupt, IRQF_TIMER,
- node->name, &timer->clkevt);
- if (ret) {
- pr_err("%s: setup_irq failed\n", node->full_name);
- goto out_unmap;
- }
-
- /* Clear match registers */
- writel(0, timer->base + TIMER1_BASE + REG_MATCH1);
- writel(0, timer->base + TIMER1_BASE + REG_MATCH2);
- writel(0, timer->base + TIMER2_BASE + REG_MATCH1);
- writel(0, timer->base + TIMER2_BASE + REG_MATCH2);
-
- /*
- * Start timer 2 rolling as our main wall clock source, keep timer 1
- * disabled
- */
- writel(0, timer->base + TIMER_CR);
- writel(~0, timer->base + TIMER2_BASE + REG_LOAD);
- writel(timer->t1_disable_val, timer->base + TIMER_CR);
-
- /*
- * documentation is not publicly available:
- * min_delta / max_delta obtained by trial-and-error,
- * max_delta 0xfffffffe should be ok because count
- * register size is u32
- */
- clockevents_config_and_register(&timer->clkevt, pclk, 0x4, 0xfffffffe);
-
- return 0;
-
-out_unmap:
- iounmap(timer->base);
-out_free:
- kfree(timer);
- return ret;
-}
-CLOCKSOURCE_OF_DECLARE(moxart, "moxa,moxart-timer", moxart_timer_init);
-CLOCKSOURCE_OF_DECLARE(aspeed, "aspeed,ast2400-timer", moxart_timer_init);
diff --git a/drivers/clocksource/mps2-timer.c b/drivers/clocksource/mps2-timer.c
index 3e4431e..aa4d63af 100644
--- a/drivers/clocksource/mps2-timer.c
+++ b/drivers/clocksource/mps2-timer.c
@@ -274,4 +274,4 @@ static int __init mps2_timer_init(struct device_node *np)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(mps2_timer, "arm,mps2-timer", mps2_timer_init);
+TIMER_OF_DECLARE(mps2_timer, "arm,mps2-timer", mps2_timer_init);
diff --git a/drivers/clocksource/mtk_timer.c b/drivers/clocksource/mtk_timer.c
index 9065949..f9b724f 100644
--- a/drivers/clocksource/mtk_timer.c
+++ b/drivers/clocksource/mtk_timer.c
@@ -265,4 +265,4 @@ err_kzalloc:
return -EINVAL;
}
-CLOCKSOURCE_OF_DECLARE(mtk_mt6577, "mediatek,mt6577-timer", mtk_timer_init);
+TIMER_OF_DECLARE(mtk_mt6577, "mediatek,mt6577-timer", mtk_timer_init);
diff --git a/drivers/clocksource/mxs_timer.c b/drivers/clocksource/mxs_timer.c
index 99b77af..a03434e 100644
--- a/drivers/clocksource/mxs_timer.c
+++ b/drivers/clocksource/mxs_timer.c
@@ -293,4 +293,4 @@ static int __init mxs_timer_init(struct device_node *np)
return setup_irq(irq, &mxs_timer_irq);
}
-CLOCKSOURCE_OF_DECLARE(mxs, "fsl,timrot", mxs_timer_init);
+TIMER_OF_DECLARE(mxs, "fsl,timrot", mxs_timer_init);
diff --git a/drivers/clocksource/nomadik-mtu.c b/drivers/clocksource/nomadik-mtu.c
index 7d44de3..8e4ddb9 100644
--- a/drivers/clocksource/nomadik-mtu.c
+++ b/drivers/clocksource/nomadik-mtu.c
@@ -284,5 +284,5 @@ static int __init nmdk_timer_of_init(struct device_node *node)
return nmdk_timer_init(base, irq, pclk, clk);
}
-CLOCKSOURCE_OF_DECLARE(nomadik_mtu, "st,nomadik-mtu",
+TIMER_OF_DECLARE(nomadik_mtu, "st,nomadik-mtu",
nmdk_timer_of_init);
diff --git a/drivers/clocksource/pxa_timer.c b/drivers/clocksource/pxa_timer.c
index a10fa667..08cd6ea 100644
--- a/drivers/clocksource/pxa_timer.c
+++ b/drivers/clocksource/pxa_timer.c
@@ -216,7 +216,7 @@ static int __init pxa_timer_dt_init(struct device_node *np)
return pxa_timer_common_init(irq, clk_get_rate(clk));
}
-CLOCKSOURCE_OF_DECLARE(pxa_timer, "marvell,pxa-timer", pxa_timer_dt_init);
+TIMER_OF_DECLARE(pxa_timer, "marvell,pxa-timer", pxa_timer_dt_init);
/*
* Legacy timer init for non device-tree boards.
diff --git a/drivers/clocksource/qcom-timer.c b/drivers/clocksource/qcom-timer.c
index ee358cd..89816f8 100644
--- a/drivers/clocksource/qcom-timer.c
+++ b/drivers/clocksource/qcom-timer.c
@@ -254,5 +254,5 @@ static int __init msm_dt_timer_init(struct device_node *np)
return msm_timer_init(freq, 32, irq, !!percpu_offset);
}
-CLOCKSOURCE_OF_DECLARE(kpss_timer, "qcom,kpss-timer", msm_dt_timer_init);
-CLOCKSOURCE_OF_DECLARE(scss_timer, "qcom,scss-timer", msm_dt_timer_init);
+TIMER_OF_DECLARE(kpss_timer, "qcom,kpss-timer", msm_dt_timer_init);
+TIMER_OF_DECLARE(scss_timer, "qcom,scss-timer", msm_dt_timer_init);
diff --git a/drivers/clocksource/renesas-ostm.c b/drivers/clocksource/renesas-ostm.c
index c76f576..6cffd7c 100644
--- a/drivers/clocksource/renesas-ostm.c
+++ b/drivers/clocksource/renesas-ostm.c
@@ -262,4 +262,4 @@ err:
return 0;
}
-CLOCKSOURCE_OF_DECLARE(ostm, "renesas,ostm", ostm_init);
+TIMER_OF_DECLARE(ostm, "renesas,ostm", ostm_init);
diff --git a/drivers/clocksource/rockchip_timer.c b/drivers/clocksource/rockchip_timer.c
index 49c02be..c27f4c8 100644
--- a/drivers/clocksource/rockchip_timer.c
+++ b/drivers/clocksource/rockchip_timer.c
@@ -303,5 +303,5 @@ static int __init rk_timer_init(struct device_node *np)
return -EINVAL;
}
-CLOCKSOURCE_OF_DECLARE(rk3288_timer, "rockchip,rk3288-timer", rk_timer_init);
-CLOCKSOURCE_OF_DECLARE(rk3399_timer, "rockchip,rk3399-timer", rk_timer_init);
+TIMER_OF_DECLARE(rk3288_timer, "rockchip,rk3288-timer", rk_timer_init);
+TIMER_OF_DECLARE(rk3399_timer, "rockchip,rk3399-timer", rk_timer_init);
diff --git a/drivers/clocksource/samsung_pwm_timer.c b/drivers/clocksource/samsung_pwm_timer.c
index a68e653..6d5d126 100644
--- a/drivers/clocksource/samsung_pwm_timer.c
+++ b/drivers/clocksource/samsung_pwm_timer.c
@@ -418,7 +418,7 @@ void __init samsung_pwm_clocksource_init(void __iomem *base,
_samsung_pwm_clocksource_init();
}
-#ifdef CONFIG_CLKSRC_OF
+#ifdef CONFIG_TIMER_OF
static int __init samsung_pwm_alloc(struct device_node *np,
const struct samsung_pwm_variant *variant)
{
@@ -466,7 +466,7 @@ static int __init s3c2410_pwm_clocksource_init(struct device_node *np)
{
return samsung_pwm_alloc(np, &s3c24xx_variant);
}
-CLOCKSOURCE_OF_DECLARE(s3c2410_pwm, "samsung,s3c2410-pwm", s3c2410_pwm_clocksource_init);
+TIMER_OF_DECLARE(s3c2410_pwm, "samsung,s3c2410-pwm", s3c2410_pwm_clocksource_init);
static const struct samsung_pwm_variant s3c64xx_variant = {
.bits = 32,
@@ -479,7 +479,7 @@ static int __init s3c64xx_pwm_clocksource_init(struct device_node *np)
{
return samsung_pwm_alloc(np, &s3c64xx_variant);
}
-CLOCKSOURCE_OF_DECLARE(s3c6400_pwm, "samsung,s3c6400-pwm", s3c64xx_pwm_clocksource_init);
+TIMER_OF_DECLARE(s3c6400_pwm, "samsung,s3c6400-pwm", s3c64xx_pwm_clocksource_init);
static const struct samsung_pwm_variant s5p64x0_variant = {
.bits = 32,
@@ -492,7 +492,7 @@ static int __init s5p64x0_pwm_clocksource_init(struct device_node *np)
{
return samsung_pwm_alloc(np, &s5p64x0_variant);
}
-CLOCKSOURCE_OF_DECLARE(s5p6440_pwm, "samsung,s5p6440-pwm", s5p64x0_pwm_clocksource_init);
+TIMER_OF_DECLARE(s5p6440_pwm, "samsung,s5p6440-pwm", s5p64x0_pwm_clocksource_init);
static const struct samsung_pwm_variant s5p_variant = {
.bits = 32,
@@ -505,5 +505,5 @@ static int __init s5p_pwm_clocksource_init(struct device_node *np)
{
return samsung_pwm_alloc(np, &s5p_variant);
}
-CLOCKSOURCE_OF_DECLARE(s5pc100_pwm, "samsung,s5pc100-pwm", s5p_pwm_clocksource_init);
+TIMER_OF_DECLARE(s5pc100_pwm, "samsung,s5pc100-pwm", s5p_pwm_clocksource_init);
#endif
diff --git a/drivers/clocksource/sun4i_timer.c b/drivers/clocksource/sun4i_timer.c
index 4452d5c..6e0180a 100644
--- a/drivers/clocksource/sun4i_timer.c
+++ b/drivers/clocksource/sun4i_timer.c
@@ -24,6 +24,8 @@
#include <linux/of_address.h>
#include <linux/of_irq.h>
+#include "timer-of.h"
+
#define TIMER_IRQ_EN_REG 0x00
#define TIMER_IRQ_EN(val) BIT(val)
#define TIMER_IRQ_ST_REG 0x04
@@ -39,38 +41,37 @@
#define TIMER_SYNC_TICKS 3
-static void __iomem *timer_base;
-static u32 ticks_per_jiffy;
-
/*
* When we disable a timer, we need to wait at least for 2 cycles of
* the timer source clock. We will use for that the clocksource timer
* that is already setup and runs at the same frequency than the other
* timers, and we never will be disabled.
*/
-static void sun4i_clkevt_sync(void)
+static void sun4i_clkevt_sync(void __iomem *base)
{
- u32 old = readl(timer_base + TIMER_CNTVAL_REG(1));
+ u32 old = readl(base + TIMER_CNTVAL_REG(1));
- while ((old - readl(timer_base + TIMER_CNTVAL_REG(1))) < TIMER_SYNC_TICKS)
+ while ((old - readl(base + TIMER_CNTVAL_REG(1))) < TIMER_SYNC_TICKS)
cpu_relax();
}
-static void sun4i_clkevt_time_stop(u8 timer)
+static void sun4i_clkevt_time_stop(void __iomem *base, u8 timer)
{
- u32 val = readl(timer_base + TIMER_CTL_REG(timer));
- writel(val & ~TIMER_CTL_ENABLE, timer_base + TIMER_CTL_REG(timer));
- sun4i_clkevt_sync();
+ u32 val = readl(base + TIMER_CTL_REG(timer));
+ writel(val & ~TIMER_CTL_ENABLE, base + TIMER_CTL_REG(timer));
+ sun4i_clkevt_sync(base);
}
-static void sun4i_clkevt_time_setup(u8 timer, unsigned long delay)
+static void sun4i_clkevt_time_setup(void __iomem *base, u8 timer,
+ unsigned long delay)
{
- writel(delay, timer_base + TIMER_INTVAL_REG(timer));
+ writel(delay, base + TIMER_INTVAL_REG(timer));
}
-static void sun4i_clkevt_time_start(u8 timer, bool periodic)
+static void sun4i_clkevt_time_start(void __iomem *base, u8 timer,
+ bool periodic)
{
- u32 val = readl(timer_base + TIMER_CTL_REG(timer));
+ u32 val = readl(base + TIMER_CTL_REG(timer));
if (periodic)
val &= ~TIMER_CTL_ONESHOT;
@@ -78,115 +79,106 @@ static void sun4i_clkevt_time_start(u8 timer, bool periodic)
val |= TIMER_CTL_ONESHOT;
writel(val | TIMER_CTL_ENABLE | TIMER_CTL_RELOAD,
- timer_base + TIMER_CTL_REG(timer));
+ base + TIMER_CTL_REG(timer));
}
static int sun4i_clkevt_shutdown(struct clock_event_device *evt)
{
- sun4i_clkevt_time_stop(0);
+ struct timer_of *to = to_timer_of(evt);
+
+ sun4i_clkevt_time_stop(timer_of_base(to), 0);
+
return 0;
}
static int sun4i_clkevt_set_oneshot(struct clock_event_device *evt)
{
- sun4i_clkevt_time_stop(0);
- sun4i_clkevt_time_start(0, false);
+ struct timer_of *to = to_timer_of(evt);
+
+ sun4i_clkevt_time_stop(timer_of_base(to), 0);
+ sun4i_clkevt_time_start(timer_of_base(to), 0, false);
+
return 0;
}
static int sun4i_clkevt_set_periodic(struct clock_event_device *evt)
{
- sun4i_clkevt_time_stop(0);
- sun4i_clkevt_time_setup(0, ticks_per_jiffy);
- sun4i_clkevt_time_start(0, true);
+ struct timer_of *to = to_timer_of(evt);
+
+ sun4i_clkevt_time_stop(timer_of_base(to), 0);
+ sun4i_clkevt_time_setup(timer_of_base(to), 0, timer_of_period(to));
+ sun4i_clkevt_time_start(timer_of_base(to), 0, true);
+
return 0;
}
static int sun4i_clkevt_next_event(unsigned long evt,
- struct clock_event_device *unused)
+ struct clock_event_device *clkevt)
{
- sun4i_clkevt_time_stop(0);
- sun4i_clkevt_time_setup(0, evt - TIMER_SYNC_TICKS);
- sun4i_clkevt_time_start(0, false);
+ struct timer_of *to = to_timer_of(clkevt);
+
+ sun4i_clkevt_time_stop(timer_of_base(to), 0);
+ sun4i_clkevt_time_setup(timer_of_base(to), 0, evt - TIMER_SYNC_TICKS);
+ sun4i_clkevt_time_start(timer_of_base(to), 0, false);
return 0;
}
-static struct clock_event_device sun4i_clockevent = {
- .name = "sun4i_tick",
- .rating = 350,
- .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
- .set_state_shutdown = sun4i_clkevt_shutdown,
- .set_state_periodic = sun4i_clkevt_set_periodic,
- .set_state_oneshot = sun4i_clkevt_set_oneshot,
- .tick_resume = sun4i_clkevt_shutdown,
- .set_next_event = sun4i_clkevt_next_event,
-};
-
-static void sun4i_timer_clear_interrupt(void)
+static void sun4i_timer_clear_interrupt(void __iomem *base)
{
- writel(TIMER_IRQ_EN(0), timer_base + TIMER_IRQ_ST_REG);
+ writel(TIMER_IRQ_EN(0), base + TIMER_IRQ_ST_REG);
}
static irqreturn_t sun4i_timer_interrupt(int irq, void *dev_id)
{
struct clock_event_device *evt = (struct clock_event_device *)dev_id;
+ struct timer_of *to = to_timer_of(evt);
- sun4i_timer_clear_interrupt();
+ sun4i_timer_clear_interrupt(timer_of_base(to));
evt->event_handler(evt);
return IRQ_HANDLED;
}
-static struct irqaction sun4i_timer_irq = {
- .name = "sun4i_timer0",
- .flags = IRQF_TIMER | IRQF_IRQPOLL,
- .handler = sun4i_timer_interrupt,
- .dev_id = &sun4i_clockevent,
+static struct timer_of to = {
+ .flags = TIMER_OF_IRQ | TIMER_OF_CLOCK | TIMER_OF_BASE,
+
+ .clkevt = {
+ .name = "sun4i_tick",
+ .rating = 350,
+ .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
+ .set_state_shutdown = sun4i_clkevt_shutdown,
+ .set_state_periodic = sun4i_clkevt_set_periodic,
+ .set_state_oneshot = sun4i_clkevt_set_oneshot,
+ .tick_resume = sun4i_clkevt_shutdown,
+ .set_next_event = sun4i_clkevt_next_event,
+ .cpumask = cpu_possible_mask,
+ },
+
+ .of_irq = {
+ .handler = sun4i_timer_interrupt,
+ .flags = IRQF_TIMER | IRQF_IRQPOLL,
+ },
};
static u64 notrace sun4i_timer_sched_read(void)
{
- return ~readl(timer_base + TIMER_CNTVAL_REG(1));
+ return ~readl(timer_of_base(&to) + TIMER_CNTVAL_REG(1));
}
static int __init sun4i_timer_init(struct device_node *node)
{
- unsigned long rate = 0;
- struct clk *clk;
- int ret, irq;
+ int ret;
u32 val;
- timer_base = of_iomap(node, 0);
- if (!timer_base) {
- pr_crit("Can't map registers\n");
- return -ENXIO;
- }
-
- irq = irq_of_parse_and_map(node, 0);
- if (irq <= 0) {
- pr_crit("Can't parse IRQ\n");
- return -EINVAL;
- }
-
- clk = of_clk_get(node, 0);
- if (IS_ERR(clk)) {
- pr_crit("Can't get timer clock\n");
- return PTR_ERR(clk);
- }
-
- ret = clk_prepare_enable(clk);
- if (ret) {
- pr_err("Failed to prepare clock\n");
+ ret = timer_of_init(node, &to);
+ if (ret)
return ret;
- }
-
- rate = clk_get_rate(clk);
- writel(~0, timer_base + TIMER_INTVAL_REG(1));
+ writel(~0, timer_of_base(&to) + TIMER_INTVAL_REG(1));
writel(TIMER_CTL_ENABLE | TIMER_CTL_RELOAD |
TIMER_CTL_CLK_SRC(TIMER_CTL_CLK_SRC_OSC24M),
- timer_base + TIMER_CTL_REG(1));
+ timer_of_base(&to) + TIMER_CTL_REG(1));
/*
* sched_clock_register does not have priorities, and on sun6i and
@@ -195,43 +187,34 @@ static int __init sun4i_timer_init(struct device_node *node)
if (of_machine_is_compatible("allwinner,sun4i-a10") ||
of_machine_is_compatible("allwinner,sun5i-a13") ||
of_machine_is_compatible("allwinner,sun5i-a10s"))
- sched_clock_register(sun4i_timer_sched_read, 32, rate);
+ sched_clock_register(sun4i_timer_sched_read, 32,
+ timer_of_rate(&to));
- ret = clocksource_mmio_init(timer_base + TIMER_CNTVAL_REG(1), node->name,
- rate, 350, 32, clocksource_mmio_readl_down);
+ ret = clocksource_mmio_init(timer_of_base(&to) + TIMER_CNTVAL_REG(1),
+ node->name, timer_of_rate(&to), 350, 32,
+ clocksource_mmio_readl_down);
if (ret) {
pr_err("Failed to register clocksource\n");
return ret;
}
- ticks_per_jiffy = DIV_ROUND_UP(rate, HZ);
-
writel(TIMER_CTL_CLK_SRC(TIMER_CTL_CLK_SRC_OSC24M),
- timer_base + TIMER_CTL_REG(0));
+ timer_of_base(&to) + TIMER_CTL_REG(0));
/* Make sure timer is stopped before playing with interrupts */
- sun4i_clkevt_time_stop(0);
+ sun4i_clkevt_time_stop(timer_of_base(&to), 0);
/* clear timer0 interrupt */
- sun4i_timer_clear_interrupt();
-
- sun4i_clockevent.cpumask = cpu_possible_mask;
- sun4i_clockevent.irq = irq;
+ sun4i_timer_clear_interrupt(timer_of_base(&to));
- clockevents_config_and_register(&sun4i_clockevent, rate,
+ clockevents_config_and_register(&to.clkevt, timer_of_rate(&to),
TIMER_SYNC_TICKS, 0xffffffff);
- ret = setup_irq(irq, &sun4i_timer_irq);
- if (ret) {
- pr_err("failed to setup irq %d\n", irq);
- return ret;
- }
-
/* Enable timer0 interrupt */
- val = readl(timer_base + TIMER_IRQ_EN_REG);
- writel(val | TIMER_IRQ_EN(0), timer_base + TIMER_IRQ_EN_REG);
+ val = readl(timer_of_base(&to) + TIMER_IRQ_EN_REG);
+ writel(val | TIMER_IRQ_EN(0), timer_of_base(&to) + TIMER_IRQ_EN_REG);
return ret;
}
-CLOCKSOURCE_OF_DECLARE(sun4i, "allwinner,sun4i-a10-timer",
+TIMER_OF_DECLARE(sun4i, "allwinner,sun4i-a10-timer",
sun4i_timer_init);
diff --git a/drivers/clocksource/tango_xtal.c b/drivers/clocksource/tango_xtal.c
index 12fcef8..c4e1c2e 100644
--- a/drivers/clocksource/tango_xtal.c
+++ b/drivers/clocksource/tango_xtal.c
@@ -53,4 +53,4 @@ static int __init tango_clocksource_init(struct device_node *np)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(tango, "sigma,tick-counter", tango_clocksource_init);
+TIMER_OF_DECLARE(tango, "sigma,tick-counter", tango_clocksource_init);
diff --git a/drivers/clocksource/tcb_clksrc.c b/drivers/clocksource/tcb_clksrc.c
index d4ca996..59e8aee 100644
--- a/drivers/clocksource/tcb_clksrc.c
+++ b/drivers/clocksource/tcb_clksrc.c
@@ -9,6 +9,7 @@
#include <linux/ioport.h>
#include <linux/io.h>
#include <linux/platform_device.h>
+#include <linux/syscore_ops.h>
#include <linux/atmel_tc.h>
@@ -40,6 +41,14 @@
*/
static void __iomem *tcaddr;
+static struct
+{
+ u32 cmr;
+ u32 imr;
+ u32 rc;
+ bool clken;
+} tcb_cache[3];
+static u32 bmr_cache;
static u64 tc_get_cycles(struct clocksource *cs)
{
@@ -48,9 +57,9 @@ static u64 tc_get_cycles(struct clocksource *cs)
raw_local_irq_save(flags);
do {
- upper = __raw_readl(tcaddr + ATMEL_TC_REG(1, CV));
- lower = __raw_readl(tcaddr + ATMEL_TC_REG(0, CV));
- } while (upper != __raw_readl(tcaddr + ATMEL_TC_REG(1, CV)));
+ upper = readl_relaxed(tcaddr + ATMEL_TC_REG(1, CV));
+ lower = readl_relaxed(tcaddr + ATMEL_TC_REG(0, CV));
+ } while (upper != readl_relaxed(tcaddr + ATMEL_TC_REG(1, CV)));
raw_local_irq_restore(flags);
return (upper << 16) | lower;
@@ -58,7 +67,47 @@ static u64 tc_get_cycles(struct clocksource *cs)
static u64 tc_get_cycles32(struct clocksource *cs)
{
- return __raw_readl(tcaddr + ATMEL_TC_REG(0, CV));
+ return readl_relaxed(tcaddr + ATMEL_TC_REG(0, CV));
+}
+
+void tc_clksrc_suspend(struct clocksource *cs)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(tcb_cache); i++) {
+ tcb_cache[i].cmr = readl(tcaddr + ATMEL_TC_REG(i, CMR));
+ tcb_cache[i].imr = readl(tcaddr + ATMEL_TC_REG(i, IMR));
+ tcb_cache[i].rc = readl(tcaddr + ATMEL_TC_REG(i, RC));
+ tcb_cache[i].clken = !!(readl(tcaddr + ATMEL_TC_REG(i, SR)) &
+ ATMEL_TC_CLKSTA);
+ }
+
+ bmr_cache = readl(tcaddr + ATMEL_TC_BMR);
+}
+
+void tc_clksrc_resume(struct clocksource *cs)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(tcb_cache); i++) {
+ /* Restore registers for the channel, RA and RB are not used */
+ writel(tcb_cache[i].cmr, tcaddr + ATMEL_TC_REG(i, CMR));
+ writel(tcb_cache[i].rc, tcaddr + ATMEL_TC_REG(i, RC));
+ writel(0, tcaddr + ATMEL_TC_REG(i, RA));
+ writel(0, tcaddr + ATMEL_TC_REG(i, RB));
+ /* Disable all the interrupts */
+ writel(0xff, tcaddr + ATMEL_TC_REG(i, IDR));
+ /* Reenable interrupts that were enabled before suspending */
+ writel(tcb_cache[i].imr, tcaddr + ATMEL_TC_REG(i, IER));
+ /* Start the clock if it was used */
+ if (tcb_cache[i].clken)
+ writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(i, CCR));
+ }
+
+ /* Dual channel, chain channels */
+ writel(bmr_cache, tcaddr + ATMEL_TC_BMR);
+ /* Finally, trigger all the channels*/
+ writel(ATMEL_TC_SYNC, tcaddr + ATMEL_TC_BCR);
}
static struct clocksource clksrc = {
@@ -67,6 +116,8 @@ static struct clocksource clksrc = {
.read = tc_get_cycles,
.mask = CLOCKSOURCE_MASK(32),
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
+ .suspend = tc_clksrc_suspend,
+ .resume = tc_clksrc_resume,
};
#ifdef CONFIG_GENERIC_CLOCKEVENTS
@@ -96,8 +147,8 @@ static int tc_shutdown(struct clock_event_device *d)
struct tc_clkevt_device *tcd = to_tc_clkevt(d);
void __iomem *regs = tcd->regs;
- __raw_writel(0xff, regs + ATMEL_TC_REG(2, IDR));
- __raw_writel(ATMEL_TC_CLKDIS, regs + ATMEL_TC_REG(2, CCR));
+ writel(0xff, regs + ATMEL_TC_REG(2, IDR));
+ writel(ATMEL_TC_CLKDIS, regs + ATMEL_TC_REG(2, CCR));
if (!clockevent_state_detached(d))
clk_disable(tcd->clk);
@@ -115,9 +166,9 @@ static int tc_set_oneshot(struct clock_event_device *d)
clk_enable(tcd->clk);
/* slow clock, count up to RC, then irq and stop */
- __raw_writel(timer_clock | ATMEL_TC_CPCSTOP | ATMEL_TC_WAVE |
+ writel(timer_clock | ATMEL_TC_CPCSTOP | ATMEL_TC_WAVE |
ATMEL_TC_WAVESEL_UP_AUTO, regs + ATMEL_TC_REG(2, CMR));
- __raw_writel(ATMEL_TC_CPCS, regs + ATMEL_TC_REG(2, IER));
+ writel(ATMEL_TC_CPCS, regs + ATMEL_TC_REG(2, IER));
/* set_next_event() configures and starts the timer */
return 0;
@@ -137,25 +188,25 @@ static int tc_set_periodic(struct clock_event_device *d)
clk_enable(tcd->clk);
/* slow clock, count up to RC, then irq and restart */
- __raw_writel(timer_clock | ATMEL_TC_WAVE | ATMEL_TC_WAVESEL_UP_AUTO,
+ writel(timer_clock | ATMEL_TC_WAVE | ATMEL_TC_WAVESEL_UP_AUTO,
regs + ATMEL_TC_REG(2, CMR));
- __raw_writel((32768 + HZ / 2) / HZ, tcaddr + ATMEL_TC_REG(2, RC));
+ writel((32768 + HZ / 2) / HZ, tcaddr + ATMEL_TC_REG(2, RC));
/* Enable clock and interrupts on RC compare */
- __raw_writel(ATMEL_TC_CPCS, regs + ATMEL_TC_REG(2, IER));
+ writel(ATMEL_TC_CPCS, regs + ATMEL_TC_REG(2, IER));
/* go go gadget! */
- __raw_writel(ATMEL_TC_CLKEN | ATMEL_TC_SWTRG, regs +
+ writel(ATMEL_TC_CLKEN | ATMEL_TC_SWTRG, regs +
ATMEL_TC_REG(2, CCR));
return 0;
}
static int tc_next_event(unsigned long delta, struct clock_event_device *d)
{
- __raw_writel(delta, tcaddr + ATMEL_TC_REG(2, RC));
+ writel_relaxed(delta, tcaddr + ATMEL_TC_REG(2, RC));
/* go go gadget! */
- __raw_writel(ATMEL_TC_CLKEN | ATMEL_TC_SWTRG,
+ writel_relaxed(ATMEL_TC_CLKEN | ATMEL_TC_SWTRG,
tcaddr + ATMEL_TC_REG(2, CCR));
return 0;
}
@@ -179,7 +230,7 @@ static irqreturn_t ch2_irq(int irq, void *handle)
struct tc_clkevt_device *dev = handle;
unsigned int sr;
- sr = __raw_readl(dev->regs + ATMEL_TC_REG(2, SR));
+ sr = readl_relaxed(dev->regs + ATMEL_TC_REG(2, SR));
if (sr & ATMEL_TC_CPCS) {
dev->clkevt.event_handler(&dev->clkevt);
return IRQ_HANDLED;
@@ -239,43 +290,43 @@ static int __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
static void __init tcb_setup_dual_chan(struct atmel_tc *tc, int mck_divisor_idx)
{
/* channel 0: waveform mode, input mclk/8, clock TIOA0 on overflow */
- __raw_writel(mck_divisor_idx /* likely divide-by-8 */
+ writel(mck_divisor_idx /* likely divide-by-8 */
| ATMEL_TC_WAVE
| ATMEL_TC_WAVESEL_UP /* free-run */
| ATMEL_TC_ACPA_SET /* TIOA0 rises at 0 */
| ATMEL_TC_ACPC_CLEAR, /* (duty cycle 50%) */
tcaddr + ATMEL_TC_REG(0, CMR));
- __raw_writel(0x0000, tcaddr + ATMEL_TC_REG(0, RA));
- __raw_writel(0x8000, tcaddr + ATMEL_TC_REG(0, RC));
- __raw_writel(0xff, tcaddr + ATMEL_TC_REG(0, IDR)); /* no irqs */
- __raw_writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(0, CCR));
+ writel(0x0000, tcaddr + ATMEL_TC_REG(0, RA));
+ writel(0x8000, tcaddr + ATMEL_TC_REG(0, RC));
+ writel(0xff, tcaddr + ATMEL_TC_REG(0, IDR)); /* no irqs */
+ writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(0, CCR));
/* channel 1: waveform mode, input TIOA0 */
- __raw_writel(ATMEL_TC_XC1 /* input: TIOA0 */
+ writel(ATMEL_TC_XC1 /* input: TIOA0 */
| ATMEL_TC_WAVE
| ATMEL_TC_WAVESEL_UP, /* free-run */
tcaddr + ATMEL_TC_REG(1, CMR));
- __raw_writel(0xff, tcaddr + ATMEL_TC_REG(1, IDR)); /* no irqs */
- __raw_writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(1, CCR));
+ writel(0xff, tcaddr + ATMEL_TC_REG(1, IDR)); /* no irqs */
+ writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(1, CCR));
/* chain channel 0 to channel 1*/
- __raw_writel(ATMEL_TC_TC1XC1S_TIOA0, tcaddr + ATMEL_TC_BMR);
+ writel(ATMEL_TC_TC1XC1S_TIOA0, tcaddr + ATMEL_TC_BMR);
/* then reset all the timers */
- __raw_writel(ATMEL_TC_SYNC, tcaddr + ATMEL_TC_BCR);
+ writel(ATMEL_TC_SYNC, tcaddr + ATMEL_TC_BCR);
}
static void __init tcb_setup_single_chan(struct atmel_tc *tc, int mck_divisor_idx)
{
/* channel 0: waveform mode, input mclk/8 */
- __raw_writel(mck_divisor_idx /* likely divide-by-8 */
+ writel(mck_divisor_idx /* likely divide-by-8 */
| ATMEL_TC_WAVE
| ATMEL_TC_WAVESEL_UP, /* free-run */
tcaddr + ATMEL_TC_REG(0, CMR));
- __raw_writel(0xff, tcaddr + ATMEL_TC_REG(0, IDR)); /* no irqs */
- __raw_writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(0, CCR));
+ writel(0xff, tcaddr + ATMEL_TC_REG(0, IDR)); /* no irqs */
+ writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(0, CCR));
/* then reset all the timers */
- __raw_writel(ATMEL_TC_SYNC, tcaddr + ATMEL_TC_BCR);
+ writel(ATMEL_TC_SYNC, tcaddr + ATMEL_TC_BCR);
}
static int __init tcb_clksrc_init(void)
diff --git a/drivers/clocksource/tegra20_timer.c b/drivers/clocksource/tegra20_timer.c
index b9990b9..c337a81 100644
--- a/drivers/clocksource/tegra20_timer.c
+++ b/drivers/clocksource/tegra20_timer.c
@@ -237,7 +237,7 @@ static int __init tegra20_init_timer(struct device_node *np)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(tegra20_timer, "nvidia,tegra20-timer", tegra20_init_timer);
+TIMER_OF_DECLARE(tegra20_timer, "nvidia,tegra20-timer", tegra20_init_timer);
static int __init tegra20_init_rtc(struct device_node *np)
{
@@ -261,4 +261,4 @@ static int __init tegra20_init_rtc(struct device_node *np)
return register_persistent_clock(NULL, tegra_read_persistent_clock64);
}
-CLOCKSOURCE_OF_DECLARE(tegra20_rtc, "nvidia,tegra20-rtc", tegra20_init_rtc);
+TIMER_OF_DECLARE(tegra20_rtc, "nvidia,tegra20-rtc", tegra20_init_rtc);
diff --git a/drivers/clocksource/time-armada-370-xp.c b/drivers/clocksource/time-armada-370-xp.c
index aea4380..edf1a46 100644
--- a/drivers/clocksource/time-armada-370-xp.c
+++ b/drivers/clocksource/time-armada-370-xp.c
@@ -351,7 +351,7 @@ static int __init armada_xp_timer_init(struct device_node *np)
return armada_370_xp_timer_common_init(np);
}
-CLOCKSOURCE_OF_DECLARE(armada_xp, "marvell,armada-xp-timer",
+TIMER_OF_DECLARE(armada_xp, "marvell,armada-xp-timer",
armada_xp_timer_init);
static int __init armada_375_timer_init(struct device_node *np)
@@ -389,7 +389,7 @@ static int __init armada_375_timer_init(struct device_node *np)
return armada_370_xp_timer_common_init(np);
}
-CLOCKSOURCE_OF_DECLARE(armada_375, "marvell,armada-375-timer",
+TIMER_OF_DECLARE(armada_375, "marvell,armada-375-timer",
armada_375_timer_init);
static int __init armada_370_timer_init(struct device_node *np)
@@ -412,5 +412,5 @@ static int __init armada_370_timer_init(struct device_node *np)
return armada_370_xp_timer_common_init(np);
}
-CLOCKSOURCE_OF_DECLARE(armada_370, "marvell,armada-370-timer",
+TIMER_OF_DECLARE(armada_370, "marvell,armada-370-timer",
armada_370_timer_init);
diff --git a/drivers/clocksource/time-efm32.c b/drivers/clocksource/time-efm32.c
index ce0f97b..257e810 100644
--- a/drivers/clocksource/time-efm32.c
+++ b/drivers/clocksource/time-efm32.c
@@ -283,5 +283,5 @@ static int __init efm32_timer_init(struct device_node *np)
return ret;
}
-CLOCKSOURCE_OF_DECLARE(efm32compat, "efm32,timer", efm32_timer_init);
-CLOCKSOURCE_OF_DECLARE(efm32, "energymicro,efm32-timer", efm32_timer_init);
+TIMER_OF_DECLARE(efm32compat, "efm32,timer", efm32_timer_init);
+TIMER_OF_DECLARE(efm32, "energymicro,efm32-timer", efm32_timer_init);
diff --git a/drivers/clocksource/time-lpc32xx.c b/drivers/clocksource/time-lpc32xx.c
index 9649cfd..d51a62a 100644
--- a/drivers/clocksource/time-lpc32xx.c
+++ b/drivers/clocksource/time-lpc32xx.c
@@ -311,4 +311,4 @@ static int __init lpc32xx_timer_init(struct device_node *np)
return ret;
}
-CLOCKSOURCE_OF_DECLARE(lpc32xx_timer, "nxp,lpc3220-timer", lpc32xx_timer_init);
+TIMER_OF_DECLARE(lpc32xx_timer, "nxp,lpc3220-timer", lpc32xx_timer_init);
diff --git a/drivers/clocksource/time-orion.c b/drivers/clocksource/time-orion.c
index b9b97f6..1220206 100644
--- a/drivers/clocksource/time-orion.c
+++ b/drivers/clocksource/time-orion.c
@@ -189,4 +189,4 @@ static int __init orion_timer_init(struct device_node *np)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(orion_timer, "marvell,orion-timer", orion_timer_init);
+TIMER_OF_DECLARE(orion_timer, "marvell,orion-timer", orion_timer_init);
diff --git a/drivers/clocksource/time-pistachio.c b/drivers/clocksource/time-pistachio.c
index 3710e4d..a2dd85d 100644
--- a/drivers/clocksource/time-pistachio.c
+++ b/drivers/clocksource/time-pistachio.c
@@ -214,5 +214,5 @@ static int __init pistachio_clksrc_of_init(struct device_node *node)
sched_clock_register(pistachio_read_sched_clock, 32, rate);
return clocksource_register_hz(&pcs_gpt.cs, rate);
}
-CLOCKSOURCE_OF_DECLARE(pistachio_gptimer, "img,pistachio-gptimer",
+TIMER_OF_DECLARE(pistachio_gptimer, "img,pistachio-gptimer",
pistachio_clksrc_of_init);
diff --git a/drivers/clocksource/timer-atlas7.c b/drivers/clocksource/timer-atlas7.c
index 50300ee..62c4bbc 100644
--- a/drivers/clocksource/timer-atlas7.c
+++ b/drivers/clocksource/timer-atlas7.c
@@ -283,4 +283,4 @@ static int __init sirfsoc_of_timer_init(struct device_node *np)
return sirfsoc_atlas7_timer_init(np);
}
-CLOCKSOURCE_OF_DECLARE(sirfsoc_atlas7_timer, "sirf,atlas7-tick", sirfsoc_of_timer_init);
+TIMER_OF_DECLARE(sirfsoc_atlas7_timer, "sirf,atlas7-tick", sirfsoc_of_timer_init);
diff --git a/drivers/clocksource/timer-atmel-pit.c b/drivers/clocksource/timer-atmel-pit.c
index cc11235..ec8a437 100644
--- a/drivers/clocksource/timer-atmel-pit.c
+++ b/drivers/clocksource/timer-atmel-pit.c
@@ -255,5 +255,5 @@ static int __init at91sam926x_pit_dt_init(struct device_node *node)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(at91sam926x_pit, "atmel,at91sam9260-pit",
+TIMER_OF_DECLARE(at91sam926x_pit, "atmel,at91sam9260-pit",
at91sam926x_pit_dt_init);
diff --git a/drivers/clocksource/timer-atmel-st.c b/drivers/clocksource/timer-atmel-st.c
index be4ac76..d2e660f 100644
--- a/drivers/clocksource/timer-atmel-st.c
+++ b/drivers/clocksource/timer-atmel-st.c
@@ -260,5 +260,5 @@ static int __init atmel_st_timer_init(struct device_node *node)
/* register clocksource */
return clocksource_register_hz(&clk32k, sclk_rate);
}
-CLOCKSOURCE_OF_DECLARE(atmel_st_timer, "atmel,at91rm9200-st",
+TIMER_OF_DECLARE(atmel_st_timer, "atmel,at91rm9200-st",
atmel_st_timer_init);
diff --git a/drivers/clocksource/timer-digicolor.c b/drivers/clocksource/timer-digicolor.c
index 94a161e..1e984a4 100644
--- a/drivers/clocksource/timer-digicolor.c
+++ b/drivers/clocksource/timer-digicolor.c
@@ -203,5 +203,5 @@ static int __init digicolor_timer_init(struct device_node *node)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(conexant_digicolor, "cnxt,cx92755-timer",
+TIMER_OF_DECLARE(conexant_digicolor, "cnxt,cx92755-timer",
digicolor_timer_init);
diff --git a/drivers/clocksource/timer-fttmr010.c b/drivers/clocksource/timer-fttmr010.c
index b4a6f1e..66dd909 100644
--- a/drivers/clocksource/timer-fttmr010.c
+++ b/drivers/clocksource/timer-fttmr010.c
@@ -11,12 +11,13 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
-#include <linux/mfd/syscon.h>
-#include <linux/regmap.h>
#include <linux/clockchips.h>
#include <linux/clocksource.h>
#include <linux/sched_clock.h>
#include <linux/clk.h>
+#include <linux/slab.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
/*
* Register definitions for the timers
@@ -37,267 +38,368 @@
#define TIMER_INTR_STATE (0x34)
#define TIMER_INTR_MASK (0x38)
-#define TIMER_1_CR_ENABLE (1 << 0)
-#define TIMER_1_CR_CLOCK (1 << 1)
-#define TIMER_1_CR_INT (1 << 2)
-#define TIMER_2_CR_ENABLE (1 << 3)
-#define TIMER_2_CR_CLOCK (1 << 4)
-#define TIMER_2_CR_INT (1 << 5)
-#define TIMER_3_CR_ENABLE (1 << 6)
-#define TIMER_3_CR_CLOCK (1 << 7)
-#define TIMER_3_CR_INT (1 << 8)
-#define TIMER_1_CR_UPDOWN (1 << 9)
-#define TIMER_2_CR_UPDOWN (1 << 10)
-#define TIMER_3_CR_UPDOWN (1 << 11)
-#define TIMER_DEFAULT_FLAGS (TIMER_1_CR_UPDOWN | \
- TIMER_3_CR_ENABLE | \
- TIMER_3_CR_UPDOWN)
-
-#define TIMER_1_INT_MATCH1 (1 << 0)
-#define TIMER_1_INT_MATCH2 (1 << 1)
-#define TIMER_1_INT_OVERFLOW (1 << 2)
-#define TIMER_2_INT_MATCH1 (1 << 3)
-#define TIMER_2_INT_MATCH2 (1 << 4)
-#define TIMER_2_INT_OVERFLOW (1 << 5)
-#define TIMER_3_INT_MATCH1 (1 << 6)
-#define TIMER_3_INT_MATCH2 (1 << 7)
-#define TIMER_3_INT_OVERFLOW (1 << 8)
+#define TIMER_1_CR_ENABLE BIT(0)
+#define TIMER_1_CR_CLOCK BIT(1)
+#define TIMER_1_CR_INT BIT(2)
+#define TIMER_2_CR_ENABLE BIT(3)
+#define TIMER_2_CR_CLOCK BIT(4)
+#define TIMER_2_CR_INT BIT(5)
+#define TIMER_3_CR_ENABLE BIT(6)
+#define TIMER_3_CR_CLOCK BIT(7)
+#define TIMER_3_CR_INT BIT(8)
+#define TIMER_1_CR_UPDOWN BIT(9)
+#define TIMER_2_CR_UPDOWN BIT(10)
+#define TIMER_3_CR_UPDOWN BIT(11)
+
+/*
+ * The Aspeed AST2400 moves bits around in the control register
+ * and lacks bits for setting the timer to count upwards.
+ */
+#define TIMER_1_CR_ASPEED_ENABLE BIT(0)
+#define TIMER_1_CR_ASPEED_CLOCK BIT(1)
+#define TIMER_1_CR_ASPEED_INT BIT(2)
+#define TIMER_2_CR_ASPEED_ENABLE BIT(4)
+#define TIMER_2_CR_ASPEED_CLOCK BIT(5)
+#define TIMER_2_CR_ASPEED_INT BIT(6)
+#define TIMER_3_CR_ASPEED_ENABLE BIT(8)
+#define TIMER_3_CR_ASPEED_CLOCK BIT(9)
+#define TIMER_3_CR_ASPEED_INT BIT(10)
+
+#define TIMER_1_INT_MATCH1 BIT(0)
+#define TIMER_1_INT_MATCH2 BIT(1)
+#define TIMER_1_INT_OVERFLOW BIT(2)
+#define TIMER_2_INT_MATCH1 BIT(3)
+#define TIMER_2_INT_MATCH2 BIT(4)
+#define TIMER_2_INT_OVERFLOW BIT(5)
+#define TIMER_3_INT_MATCH1 BIT(6)
+#define TIMER_3_INT_MATCH2 BIT(7)
+#define TIMER_3_INT_OVERFLOW BIT(8)
#define TIMER_INT_ALL_MASK 0x1ff
-static unsigned int tick_rate;
-static void __iomem *base;
+struct fttmr010 {
+ void __iomem *base;
+ unsigned int tick_rate;
+ bool count_down;
+ u32 t1_enable_val;
+ struct clock_event_device clkevt;
+#ifdef CONFIG_ARM
+ struct delay_timer delay_timer;
+#endif
+};
+
+/*
+ * A local singleton used by sched_clock and delay timer reads, which are
+ * fast and stateless
+ */
+static struct fttmr010 *local_fttmr;
+
+static inline struct fttmr010 *to_fttmr010(struct clock_event_device *evt)
+{
+ return container_of(evt, struct fttmr010, clkevt);
+}
+
+static unsigned long fttmr010_read_current_timer_up(void)
+{
+ return readl(local_fttmr->base + TIMER2_COUNT);
+}
+
+static unsigned long fttmr010_read_current_timer_down(void)
+{
+ return ~readl(local_fttmr->base + TIMER2_COUNT);
+}
+
+static u64 notrace fttmr010_read_sched_clock_up(void)
+{
+ return fttmr010_read_current_timer_up();
+}
-static u64 notrace fttmr010_read_sched_clock(void)
+static u64 notrace fttmr010_read_sched_clock_down(void)
{
- return readl(base + TIMER3_COUNT);
+ return fttmr010_read_current_timer_down();
}
static int fttmr010_timer_set_next_event(unsigned long cycles,
struct clock_event_device *evt)
{
+ struct fttmr010 *fttmr010 = to_fttmr010(evt);
u32 cr;
- /* Setup the match register */
- cr = readl(base + TIMER1_COUNT);
- writel(cr + cycles, base + TIMER1_MATCH1);
- if (readl(base + TIMER1_COUNT) - cr > cycles)
- return -ETIME;
+ /* Stop */
+ cr = readl(fttmr010->base + TIMER_CR);
+ cr &= ~fttmr010->t1_enable_val;
+ writel(cr, fttmr010->base + TIMER_CR);
+
+ /* Setup the match register forward/backward in time */
+ cr = readl(fttmr010->base + TIMER1_COUNT);
+ if (fttmr010->count_down)
+ cr -= cycles;
+ else
+ cr += cycles;
+ writel(cr, fttmr010->base + TIMER1_MATCH1);
+
+ /* Start */
+ cr = readl(fttmr010->base + TIMER_CR);
+ cr |= fttmr010->t1_enable_val;
+ writel(cr, fttmr010->base + TIMER_CR);
return 0;
}
static int fttmr010_timer_shutdown(struct clock_event_device *evt)
{
+ struct fttmr010 *fttmr010 = to_fttmr010(evt);
u32 cr;
- /*
- * Disable also for oneshot: the set_next() call will arm the timer
- * instead.
- */
- /* Stop timer and interrupt. */
- cr = readl(base + TIMER_CR);
- cr &= ~(TIMER_1_CR_ENABLE | TIMER_1_CR_INT);
- writel(cr, base + TIMER_CR);
+ /* Stop */
+ cr = readl(fttmr010->base + TIMER_CR);
+ cr &= ~fttmr010->t1_enable_val;
+ writel(cr, fttmr010->base + TIMER_CR);
+
+ return 0;
+}
+
+static int fttmr010_timer_set_oneshot(struct clock_event_device *evt)
+{
+ struct fttmr010 *fttmr010 = to_fttmr010(evt);
+ u32 cr;
+
+ /* Stop */
+ cr = readl(fttmr010->base + TIMER_CR);
+ cr &= ~fttmr010->t1_enable_val;
+ writel(cr, fttmr010->base + TIMER_CR);
- /* Setup counter start from 0 */
- writel(0, base + TIMER1_COUNT);
- writel(0, base + TIMER1_LOAD);
+ /* Setup counter start from 0 or ~0 */
+ writel(0, fttmr010->base + TIMER1_COUNT);
+ if (fttmr010->count_down)
+ writel(~0, fttmr010->base + TIMER1_LOAD);
+ else
+ writel(0, fttmr010->base + TIMER1_LOAD);
- /* enable interrupt */
- cr = readl(base + TIMER_INTR_MASK);
+ /* Enable interrupt */
+ cr = readl(fttmr010->base + TIMER_INTR_MASK);
cr &= ~(TIMER_1_INT_OVERFLOW | TIMER_1_INT_MATCH2);
cr |= TIMER_1_INT_MATCH1;
- writel(cr, base + TIMER_INTR_MASK);
-
- /* start the timer */
- cr = readl(base + TIMER_CR);
- cr |= TIMER_1_CR_ENABLE;
- writel(cr, base + TIMER_CR);
+ writel(cr, fttmr010->base + TIMER_INTR_MASK);
return 0;
}
static int fttmr010_timer_set_periodic(struct clock_event_device *evt)
{
- u32 period = DIV_ROUND_CLOSEST(tick_rate, HZ);
+ struct fttmr010 *fttmr010 = to_fttmr010(evt);
+ u32 period = DIV_ROUND_CLOSEST(fttmr010->tick_rate, HZ);
u32 cr;
- /* Stop timer and interrupt */
- cr = readl(base + TIMER_CR);
- cr &= ~(TIMER_1_CR_ENABLE | TIMER_1_CR_INT);
- writel(cr, base + TIMER_CR);
-
- /* Setup timer to fire at 1/HT intervals. */
- cr = 0xffffffff - (period - 1);
- writel(cr, base + TIMER1_COUNT);
- writel(cr, base + TIMER1_LOAD);
-
- /* enable interrupt on overflow */
- cr = readl(base + TIMER_INTR_MASK);
- cr &= ~(TIMER_1_INT_MATCH1 | TIMER_1_INT_MATCH2);
- cr |= TIMER_1_INT_OVERFLOW;
- writel(cr, base + TIMER_INTR_MASK);
+ /* Stop */
+ cr = readl(fttmr010->base + TIMER_CR);
+ cr &= ~fttmr010->t1_enable_val;
+ writel(cr, fttmr010->base + TIMER_CR);
+
+ /* Setup timer to fire at 1/HZ intervals. */
+ if (fttmr010->count_down) {
+ writel(period, fttmr010->base + TIMER1_LOAD);
+ writel(0, fttmr010->base + TIMER1_MATCH1);
+ } else {
+ cr = 0xffffffff - (period - 1);
+ writel(cr, fttmr010->base + TIMER1_COUNT);
+ writel(cr, fttmr010->base + TIMER1_LOAD);
+
+ /* Enable interrupt on overflow */
+ cr = readl(fttmr010->base + TIMER_INTR_MASK);
+ cr &= ~(TIMER_1_INT_MATCH1 | TIMER_1_INT_MATCH2);
+ cr |= TIMER_1_INT_OVERFLOW;
+ writel(cr, fttmr010->base + TIMER_INTR_MASK);
+ }
/* Start the timer */
- cr = readl(base + TIMER_CR);
- cr |= TIMER_1_CR_ENABLE;
- cr |= TIMER_1_CR_INT;
- writel(cr, base + TIMER_CR);
+ cr = readl(fttmr010->base + TIMER_CR);
+ cr |= fttmr010->t1_enable_val;
+ writel(cr, fttmr010->base + TIMER_CR);
return 0;
}
-/* Use TIMER1 as clock event */
-static struct clock_event_device fttmr010_clockevent = {
- .name = "TIMER1",
- /* Reasonably fast and accurate clock event */
- .rating = 300,
- .shift = 32,
- .features = CLOCK_EVT_FEAT_PERIODIC |
- CLOCK_EVT_FEAT_ONESHOT,
- .set_next_event = fttmr010_timer_set_next_event,
- .set_state_shutdown = fttmr010_timer_shutdown,
- .set_state_periodic = fttmr010_timer_set_periodic,
- .set_state_oneshot = fttmr010_timer_shutdown,
- .tick_resume = fttmr010_timer_shutdown,
-};
-
/*
* IRQ handler for the timer
*/
static irqreturn_t fttmr010_timer_interrupt(int irq, void *dev_id)
{
- struct clock_event_device *evt = &fttmr010_clockevent;
+ struct clock_event_device *evt = dev_id;
evt->event_handler(evt);
return IRQ_HANDLED;
}
-static struct irqaction fttmr010_timer_irq = {
- .name = "Faraday FTTMR010 Timer Tick",
- .flags = IRQF_TIMER,
- .handler = fttmr010_timer_interrupt,
-};
-
-static int __init fttmr010_timer_common_init(struct device_node *np)
+static int __init fttmr010_common_init(struct device_node *np, bool is_aspeed)
{
+ struct fttmr010 *fttmr010;
int irq;
+ struct clk *clk;
+ int ret;
+ u32 val;
+
+ /*
+ * These implementations require a clock reference.
+ * FIXME: we currently only support clocking using PCLK
+ * and using EXTCLK is not supported in the driver.
+ */
+ clk = of_clk_get_by_name(np, "PCLK");
+ if (IS_ERR(clk)) {
+ pr_err("could not get PCLK\n");
+ return PTR_ERR(clk);
+ }
+ ret = clk_prepare_enable(clk);
+ if (ret) {
+ pr_err("failed to enable PCLK\n");
+ return ret;
+ }
- base = of_iomap(np, 0);
- if (!base) {
+ fttmr010 = kzalloc(sizeof(*fttmr010), GFP_KERNEL);
+ if (!fttmr010) {
+ ret = -ENOMEM;
+ goto out_disable_clock;
+ }
+ fttmr010->tick_rate = clk_get_rate(clk);
+
+ fttmr010->base = of_iomap(np, 0);
+ if (!fttmr010->base) {
pr_err("Can't remap registers");
- return -ENXIO;
+ ret = -ENXIO;
+ goto out_free;
}
/* IRQ for timer 1 */
irq = irq_of_parse_and_map(np, 0);
if (irq <= 0) {
pr_err("Can't parse IRQ");
- return -EINVAL;
+ ret = -EINVAL;
+ goto out_unmap;
+ }
+
+ /*
+ * The Aspeed AST2400 moves bits around in the control register,
+ * otherwise it works the same.
+ */
+ if (is_aspeed) {
+ fttmr010->t1_enable_val = TIMER_1_CR_ASPEED_ENABLE |
+ TIMER_1_CR_ASPEED_INT;
+ /* Downward not available */
+ fttmr010->count_down = true;
+ } else {
+ fttmr010->t1_enable_val = TIMER_1_CR_ENABLE | TIMER_1_CR_INT;
}
/*
* Reset the interrupt mask and status
*/
- writel(TIMER_INT_ALL_MASK, base + TIMER_INTR_MASK);
- writel(0, base + TIMER_INTR_STATE);
- writel(TIMER_DEFAULT_FLAGS, base + TIMER_CR);
+ writel(TIMER_INT_ALL_MASK, fttmr010->base + TIMER_INTR_MASK);
+ writel(0, fttmr010->base + TIMER_INTR_STATE);
+
+ /*
+ * Enable timer 1 count up, timer 2 count up, except on Aspeed,
+ * where everything just counts down.
+ */
+ if (is_aspeed)
+ val = TIMER_2_CR_ASPEED_ENABLE;
+ else {
+ val = TIMER_2_CR_ENABLE;
+ if (!fttmr010->count_down)
+ val |= TIMER_1_CR_UPDOWN | TIMER_2_CR_UPDOWN;
+ }
+ writel(val, fttmr010->base + TIMER_CR);
/*
* Setup free-running clocksource timer (interrupts
* disabled.)
*/
- writel(0, base + TIMER3_COUNT);
- writel(0, base + TIMER3_LOAD);
- writel(0, base + TIMER3_MATCH1);
- writel(0, base + TIMER3_MATCH2);
- clocksource_mmio_init(base + TIMER3_COUNT,
- "fttmr010_clocksource", tick_rate,
- 300, 32, clocksource_mmio_readl_up);
- sched_clock_register(fttmr010_read_sched_clock, 32, tick_rate);
+ local_fttmr = fttmr010;
+ writel(0, fttmr010->base + TIMER2_COUNT);
+ writel(0, fttmr010->base + TIMER2_MATCH1);
+ writel(0, fttmr010->base + TIMER2_MATCH2);
+
+ if (fttmr010->count_down) {
+ writel(~0, fttmr010->base + TIMER2_LOAD);
+ clocksource_mmio_init(fttmr010->base + TIMER2_COUNT,
+ "FTTMR010-TIMER2",
+ fttmr010->tick_rate,
+ 300, 32, clocksource_mmio_readl_down);
+ sched_clock_register(fttmr010_read_sched_clock_down, 32,
+ fttmr010->tick_rate);
+ } else {
+ writel(0, fttmr010->base + TIMER2_LOAD);
+ clocksource_mmio_init(fttmr010->base + TIMER2_COUNT,
+ "FTTMR010-TIMER2",
+ fttmr010->tick_rate,
+ 300, 32, clocksource_mmio_readl_up);
+ sched_clock_register(fttmr010_read_sched_clock_up, 32,
+ fttmr010->tick_rate);
+ }
/*
- * Setup clockevent timer (interrupt-driven.)
+ * Setup clockevent timer (interrupt-driven) on timer 1.
*/
- writel(0, base + TIMER1_COUNT);
- writel(0, base + TIMER1_LOAD);
- writel(0, base + TIMER1_MATCH1);
- writel(0, base + TIMER1_MATCH2);
- setup_irq(irq, &fttmr010_timer_irq);
- fttmr010_clockevent.cpumask = cpumask_of(0);
- clockevents_config_and_register(&fttmr010_clockevent, tick_rate,
+ writel(0, fttmr010->base + TIMER1_COUNT);
+ writel(0, fttmr010->base + TIMER1_LOAD);
+ writel(0, fttmr010->base + TIMER1_MATCH1);
+ writel(0, fttmr010->base + TIMER1_MATCH2);
+ ret = request_irq(irq, fttmr010_timer_interrupt, IRQF_TIMER,
+ "FTTMR010-TIMER1", &fttmr010->clkevt);
+ if (ret) {
+ pr_err("FTTMR010-TIMER1 no IRQ\n");
+ goto out_unmap;
+ }
+
+ fttmr010->clkevt.name = "FTTMR010-TIMER1";
+ /* Reasonably fast and accurate clock event */
+ fttmr010->clkevt.rating = 300;
+ fttmr010->clkevt.features = CLOCK_EVT_FEAT_PERIODIC |
+ CLOCK_EVT_FEAT_ONESHOT;
+ fttmr010->clkevt.set_next_event = fttmr010_timer_set_next_event;
+ fttmr010->clkevt.set_state_shutdown = fttmr010_timer_shutdown;
+ fttmr010->clkevt.set_state_periodic = fttmr010_timer_set_periodic;
+ fttmr010->clkevt.set_state_oneshot = fttmr010_timer_set_oneshot;
+ fttmr010->clkevt.tick_resume = fttmr010_timer_shutdown;
+ fttmr010->clkevt.cpumask = cpumask_of(0);
+ fttmr010->clkevt.irq = irq;
+ clockevents_config_and_register(&fttmr010->clkevt,
+ fttmr010->tick_rate,
1, 0xffffffff);
- return 0;
-}
+#ifdef CONFIG_ARM
+ /* Also use this timer for delays */
+ if (fttmr010->count_down)
+ fttmr010->delay_timer.read_current_timer =
+ fttmr010_read_current_timer_down;
+ else
+ fttmr010->delay_timer.read_current_timer =
+ fttmr010_read_current_timer_up;
+ fttmr010->delay_timer.freq = fttmr010->tick_rate;
+ register_current_timer_delay(&fttmr010->delay_timer);
+#endif
-static int __init fttmr010_timer_of_init(struct device_node *np)
-{
- /*
- * These implementations require a clock reference.
- * FIXME: we currently only support clocking using PCLK
- * and using EXTCLK is not supported in the driver.
- */
- struct clk *clk;
+ return 0;
- clk = of_clk_get_by_name(np, "PCLK");
- if (IS_ERR(clk)) {
- pr_err("could not get PCLK");
- return PTR_ERR(clk);
- }
- tick_rate = clk_get_rate(clk);
+out_unmap:
+ iounmap(fttmr010->base);
+out_free:
+ kfree(fttmr010);
+out_disable_clock:
+ clk_disable_unprepare(clk);
- return fttmr010_timer_common_init(np);
+ return ret;
}
-CLOCKSOURCE_OF_DECLARE(fttmr010, "faraday,fttmr010", fttmr010_timer_of_init);
-/*
- * Gemini-specific: relevant registers in the global syscon
- */
-#define GLOBAL_STATUS 0x04
-#define CPU_AHB_RATIO_MASK (0x3 << 18)
-#define CPU_AHB_1_1 (0x0 << 18)
-#define CPU_AHB_3_2 (0x1 << 18)
-#define CPU_AHB_24_13 (0x2 << 18)
-#define CPU_AHB_2_1 (0x3 << 18)
-#define REG_TO_AHB_SPEED(reg) ((((reg) >> 15) & 0x7) * 10 + 130)
-
-static int __init gemini_timer_of_init(struct device_node *np)
+static __init int aspeed_timer_init(struct device_node *np)
{
- static struct regmap *map;
- int ret;
- u32 val;
-
- map = syscon_regmap_lookup_by_phandle(np, "syscon");
- if (IS_ERR(map)) {
- pr_err("Can't get regmap for syscon handle\n");
- return -ENODEV;
- }
- ret = regmap_read(map, GLOBAL_STATUS, &val);
- if (ret) {
- pr_err("Can't read syscon status register\n");
- return -ENXIO;
- }
-
- tick_rate = REG_TO_AHB_SPEED(val) * 1000000;
- pr_info("Bus: %dMHz ", tick_rate / 1000000);
-
- tick_rate /= 6; /* APB bus run AHB*(1/6) */
-
- switch (val & CPU_AHB_RATIO_MASK) {
- case CPU_AHB_1_1:
- pr_cont("(1/1)\n");
- break;
- case CPU_AHB_3_2:
- pr_cont("(3/2)\n");
- break;
- case CPU_AHB_24_13:
- pr_cont("(24/13)\n");
- break;
- case CPU_AHB_2_1:
- pr_cont("(2/1)\n");
- break;
- }
+ return fttmr010_common_init(np, true);
+}
- return fttmr010_timer_common_init(np);
+static __init int fttmr010_timer_init(struct device_node *np)
+{
+ return fttmr010_common_init(np, false);
}
-CLOCKSOURCE_OF_DECLARE(gemini, "cortina,gemini-timer", gemini_timer_of_init);
+
+TIMER_OF_DECLARE(fttmr010, "faraday,fttmr010", fttmr010_timer_init);
+TIMER_OF_DECLARE(gemini, "cortina,gemini-timer", fttmr010_timer_init);
+TIMER_OF_DECLARE(moxart, "moxa,moxart-timer", fttmr010_timer_init);
+TIMER_OF_DECLARE(ast2400, "aspeed,ast2400-timer", aspeed_timer_init);
+TIMER_OF_DECLARE(ast2500, "aspeed,ast2500-timer", aspeed_timer_init);
diff --git a/drivers/clocksource/timer-imx-gpt.c b/drivers/clocksource/timer-imx-gpt.c
index f595460..6ec6d79 100644
--- a/drivers/clocksource/timer-imx-gpt.c
+++ b/drivers/clocksource/timer-imx-gpt.c
@@ -545,15 +545,15 @@ static int __init imx6dl_timer_init_dt(struct device_node *np)
return mxc_timer_init_dt(np, GPT_TYPE_IMX6DL);
}
-CLOCKSOURCE_OF_DECLARE(imx1_timer, "fsl,imx1-gpt", imx1_timer_init_dt);
-CLOCKSOURCE_OF_DECLARE(imx21_timer, "fsl,imx21-gpt", imx21_timer_init_dt);
-CLOCKSOURCE_OF_DECLARE(imx27_timer, "fsl,imx27-gpt", imx21_timer_init_dt);
-CLOCKSOURCE_OF_DECLARE(imx31_timer, "fsl,imx31-gpt", imx31_timer_init_dt);
-CLOCKSOURCE_OF_DECLARE(imx25_timer, "fsl,imx25-gpt", imx31_timer_init_dt);
-CLOCKSOURCE_OF_DECLARE(imx50_timer, "fsl,imx50-gpt", imx31_timer_init_dt);
-CLOCKSOURCE_OF_DECLARE(imx51_timer, "fsl,imx51-gpt", imx31_timer_init_dt);
-CLOCKSOURCE_OF_DECLARE(imx53_timer, "fsl,imx53-gpt", imx31_timer_init_dt);
-CLOCKSOURCE_OF_DECLARE(imx6q_timer, "fsl,imx6q-gpt", imx31_timer_init_dt);
-CLOCKSOURCE_OF_DECLARE(imx6dl_timer, "fsl,imx6dl-gpt", imx6dl_timer_init_dt);
-CLOCKSOURCE_OF_DECLARE(imx6sl_timer, "fsl,imx6sl-gpt", imx6dl_timer_init_dt);
-CLOCKSOURCE_OF_DECLARE(imx6sx_timer, "fsl,imx6sx-gpt", imx6dl_timer_init_dt);
+TIMER_OF_DECLARE(imx1_timer, "fsl,imx1-gpt", imx1_timer_init_dt);
+TIMER_OF_DECLARE(imx21_timer, "fsl,imx21-gpt", imx21_timer_init_dt);
+TIMER_OF_DECLARE(imx27_timer, "fsl,imx27-gpt", imx21_timer_init_dt);
+TIMER_OF_DECLARE(imx31_timer, "fsl,imx31-gpt", imx31_timer_init_dt);
+TIMER_OF_DECLARE(imx25_timer, "fsl,imx25-gpt", imx31_timer_init_dt);
+TIMER_OF_DECLARE(imx50_timer, "fsl,imx50-gpt", imx31_timer_init_dt);
+TIMER_OF_DECLARE(imx51_timer, "fsl,imx51-gpt", imx31_timer_init_dt);
+TIMER_OF_DECLARE(imx53_timer, "fsl,imx53-gpt", imx31_timer_init_dt);
+TIMER_OF_DECLARE(imx6q_timer, "fsl,imx6q-gpt", imx31_timer_init_dt);
+TIMER_OF_DECLARE(imx6dl_timer, "fsl,imx6dl-gpt", imx6dl_timer_init_dt);
+TIMER_OF_DECLARE(imx6sl_timer, "fsl,imx6sl-gpt", imx6dl_timer_init_dt);
+TIMER_OF_DECLARE(imx6sx_timer, "fsl,imx6sx-gpt", imx6dl_timer_init_dt);
diff --git a/drivers/clocksource/timer-integrator-ap.c b/drivers/clocksource/timer-integrator-ap.c
index 04ad306..2ff64d9 100644
--- a/drivers/clocksource/timer-integrator-ap.c
+++ b/drivers/clocksource/timer-integrator-ap.c
@@ -232,5 +232,5 @@ static int __init integrator_ap_timer_init_of(struct device_node *node)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(integrator_ap_timer, "arm,integrator-timer",
+TIMER_OF_DECLARE(integrator_ap_timer, "arm,integrator-timer",
integrator_ap_timer_init_of);
diff --git a/drivers/clocksource/timer-keystone.c b/drivers/clocksource/timer-keystone.c
index ab68a47..0eee032 100644
--- a/drivers/clocksource/timer-keystone.c
+++ b/drivers/clocksource/timer-keystone.c
@@ -226,5 +226,5 @@ err:
return error;
}
-CLOCKSOURCE_OF_DECLARE(keystone_timer, "ti,keystone-timer",
+TIMER_OF_DECLARE(keystone_timer, "ti,keystone-timer",
keystone_timer_init);
diff --git a/drivers/clocksource/timer-nps.c b/drivers/clocksource/timer-nps.c
index e74ea17..7b6bb0d 100644
--- a/drivers/clocksource/timer-nps.c
+++ b/drivers/clocksource/timer-nps.c
@@ -110,9 +110,9 @@ static int __init nps_setup_clocksource(struct device_node *node)
return ret;
}
-CLOCKSOURCE_OF_DECLARE(ezchip_nps400_clksrc, "ezchip,nps400-timer",
+TIMER_OF_DECLARE(ezchip_nps400_clksrc, "ezchip,nps400-timer",
nps_setup_clocksource);
-CLOCKSOURCE_OF_DECLARE(ezchip_nps400_clk_src, "ezchip,nps400-timer1",
+TIMER_OF_DECLARE(ezchip_nps400_clk_src, "ezchip,nps400-timer1",
nps_setup_clocksource);
#ifdef CONFIG_EZNPS_MTM_EXT
@@ -279,6 +279,6 @@ static int __init nps_setup_clockevent(struct device_node *node)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(ezchip_nps400_clk_evt, "ezchip,nps400-timer0",
+TIMER_OF_DECLARE(ezchip_nps400_clk_evt, "ezchip,nps400-timer0",
nps_setup_clockevent);
#endif /* CONFIG_EZNPS_MTM_EXT */
diff --git a/drivers/clocksource/timer-of.c b/drivers/clocksource/timer-of.c
new file mode 100644
index 0000000..f6e7491
--- /dev/null
+++ b/drivers/clocksource/timer-of.c
@@ -0,0 +1,171 @@
+/*
+ * Copyright (c) 2017, Linaro Ltd. All rights reserved.
+ *
+ * Author: Daniel Lezcano <daniel.lezcano@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/slab.h>
+
+#include "timer-of.h"
+
+static __init void timer_irq_exit(struct of_timer_irq *of_irq)
+{
+ struct timer_of *to = container_of(of_irq, struct timer_of, of_irq);
+
+ struct clock_event_device *clkevt = &to->clkevt;
+
+ of_irq->percpu ? free_percpu_irq(of_irq->irq, clkevt) :
+ free_irq(of_irq->irq, clkevt);
+}
+
+static __init int timer_irq_init(struct device_node *np,
+ struct of_timer_irq *of_irq)
+{
+ int ret;
+ struct timer_of *to = container_of(of_irq, struct timer_of, of_irq);
+ struct clock_event_device *clkevt = &to->clkevt;
+
+ of_irq->irq = of_irq->name ? of_irq_get_byname(np, of_irq->name):
+ irq_of_parse_and_map(np, of_irq->index);
+ if (!of_irq->irq) {
+ pr_err("Failed to map interrupt for %s\n", np->full_name);
+ return -EINVAL;
+ }
+
+ ret = of_irq->percpu ?
+ request_percpu_irq(of_irq->irq, of_irq->handler,
+ np->full_name, clkevt) :
+ request_irq(of_irq->irq, of_irq->handler,
+ of_irq->flags ? of_irq->flags : IRQF_TIMER,
+ np->full_name, clkevt);
+ if (ret) {
+ pr_err("Failed to request irq %d for %s\n", of_irq->irq,
+ np->full_name);
+ return ret;
+ }
+
+ clkevt->irq = of_irq->irq;
+
+ return 0;
+}
+
+static __init void timer_clk_exit(struct of_timer_clk *of_clk)
+{
+ of_clk->rate = 0;
+ clk_disable_unprepare(of_clk->clk);
+ clk_put(of_clk->clk);
+}
+
+static __init int timer_clk_init(struct device_node *np,
+ struct of_timer_clk *of_clk)
+{
+ int ret;
+
+ of_clk->clk = of_clk->name ? of_clk_get_by_name(np, of_clk->name) :
+ of_clk_get(np, of_clk->index);
+ if (IS_ERR(of_clk->clk)) {
+ pr_err("Failed to get clock for %s\n", np->full_name);
+ return PTR_ERR(of_clk->clk);
+ }
+
+ ret = clk_prepare_enable(of_clk->clk);
+ if (ret) {
+ pr_err("Failed for enable clock for %s\n", np->full_name);
+ goto out_clk_put;
+ }
+
+ of_clk->rate = clk_get_rate(of_clk->clk);
+ if (!of_clk->rate) {
+ ret = -EINVAL;
+ pr_err("Failed to get clock rate for %s\n", np->full_name);
+ goto out_clk_disable;
+ }
+
+ of_clk->period = DIV_ROUND_UP(of_clk->rate, HZ);
+out:
+ return ret;
+
+out_clk_disable:
+ clk_disable_unprepare(of_clk->clk);
+out_clk_put:
+ clk_put(of_clk->clk);
+
+ goto out;
+}
+
+static __init void timer_base_exit(struct of_timer_base *of_base)
+{
+ iounmap(of_base->base);
+}
+
+static __init int timer_base_init(struct device_node *np,
+ struct of_timer_base *of_base)
+{
+ const char *name = of_base->name ? of_base->name : np->full_name;
+
+ of_base->base = of_io_request_and_map(np, of_base->index, name);
+ if (!of_base->base) {
+ pr_err("Failed to iomap (%s)\n", name);
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+int __init timer_of_init(struct device_node *np, struct timer_of *to)
+{
+ int ret = -EINVAL;
+ int flags = 0;
+
+ if (to->flags & TIMER_OF_BASE) {
+ ret = timer_base_init(np, &to->of_base);
+ if (ret)
+ goto out_fail;
+ flags |= TIMER_OF_BASE;
+ }
+
+ if (to->flags & TIMER_OF_CLOCK) {
+ ret = timer_clk_init(np, &to->of_clk);
+ if (ret)
+ goto out_fail;
+ flags |= TIMER_OF_CLOCK;
+ }
+
+ if (to->flags & TIMER_OF_IRQ) {
+ ret = timer_irq_init(np, &to->of_irq);
+ if (ret)
+ goto out_fail;
+ flags |= TIMER_OF_IRQ;
+ }
+
+ if (!to->clkevt.name)
+ to->clkevt.name = np->name;
+ return ret;
+
+out_fail:
+ if (flags & TIMER_OF_IRQ)
+ timer_irq_exit(&to->of_irq);
+
+ if (flags & TIMER_OF_CLOCK)
+ timer_clk_exit(&to->of_clk);
+
+ if (flags & TIMER_OF_BASE)
+ timer_base_exit(&to->of_base);
+ return ret;
+}
diff --git a/drivers/clocksource/timer-of.h b/drivers/clocksource/timer-of.h
new file mode 100644
index 0000000..e0d7272
--- /dev/null
+++ b/drivers/clocksource/timer-of.h
@@ -0,0 +1,69 @@
+#ifndef __TIMER_OF_H__
+#define __TIMER_OF_H__
+
+#include <linux/clockchips.h>
+
+#define TIMER_OF_BASE 0x1
+#define TIMER_OF_CLOCK 0x2
+#define TIMER_OF_IRQ 0x4
+
+struct of_timer_irq {
+ int irq;
+ int index;
+ int percpu;
+ const char *name;
+ unsigned long flags;
+ irq_handler_t handler;
+};
+
+struct of_timer_base {
+ void __iomem *base;
+ const char *name;
+ int index;
+};
+
+struct of_timer_clk {
+ struct clk *clk;
+ const char *name;
+ int index;
+ unsigned long rate;
+ unsigned long period;
+};
+
+struct timer_of {
+ unsigned int flags;
+ struct clock_event_device clkevt;
+ struct of_timer_base of_base;
+ struct of_timer_irq of_irq;
+ struct of_timer_clk of_clk;
+ void *private_data;
+};
+
+static inline struct timer_of *to_timer_of(struct clock_event_device *clkevt)
+{
+ return container_of(clkevt, struct timer_of, clkevt);
+}
+
+static inline void __iomem *timer_of_base(struct timer_of *to)
+{
+ return to->of_base.base;
+}
+
+static inline int timer_of_irq(struct timer_of *to)
+{
+ return to->of_irq.irq;
+}
+
+static inline unsigned long timer_of_rate(struct timer_of *to)
+{
+ return to->of_clk.rate;
+}
+
+static inline unsigned long timer_of_period(struct timer_of *to)
+{
+ return to->of_clk.period;
+}
+
+extern int __init timer_of_init(struct device_node *np,
+ struct timer_of *to);
+#endif
diff --git a/drivers/clocksource/timer-oxnas-rps.c b/drivers/clocksource/timer-oxnas-rps.c
index d630bf4..eed6fef 100644
--- a/drivers/clocksource/timer-oxnas-rps.c
+++ b/drivers/clocksource/timer-oxnas-rps.c
@@ -293,7 +293,7 @@ err_alloc:
return ret;
}
-CLOCKSOURCE_OF_DECLARE(ox810se_rps,
+TIMER_OF_DECLARE(ox810se_rps,
"oxsemi,ox810se-rps-timer", oxnas_rps_timer_init);
-CLOCKSOURCE_OF_DECLARE(ox820_rps,
+TIMER_OF_DECLARE(ox820_rps,
"oxsemi,ox820se-rps-timer", oxnas_rps_timer_init);
diff --git a/drivers/clocksource/timer-prima2.c b/drivers/clocksource/timer-prima2.c
index b4122ed..20ff33b 100644
--- a/drivers/clocksource/timer-prima2.c
+++ b/drivers/clocksource/timer-prima2.c
@@ -245,5 +245,5 @@ static int __init sirfsoc_prima2_timer_init(struct device_node *np)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(sirfsoc_prima2_timer,
+TIMER_OF_DECLARE(sirfsoc_prima2_timer,
"sirf,prima2-tick", sirfsoc_prima2_timer_init);
diff --git a/drivers/clocksource/clksrc-probe.c b/drivers/clocksource/timer-probe.c
index ac701ff..da81e5d 100644
--- a/drivers/clocksource/clksrc-probe.c
+++ b/drivers/clocksource/timer-probe.c
@@ -19,20 +19,20 @@
#include <linux/of.h>
#include <linux/clocksource.h>
-extern struct of_device_id __clksrc_of_table[];
+extern struct of_device_id __timer_of_table[];
-static const struct of_device_id __clksrc_of_table_sentinel
- __used __section(__clksrc_of_table_end);
+static const struct of_device_id __timer_of_table_sentinel
+ __used __section(__timer_of_table_end);
-void __init clocksource_probe(void)
+void __init timer_probe(void)
{
struct device_node *np;
const struct of_device_id *match;
of_init_fn_1_ret init_func_ret;
- unsigned clocksources = 0;
+ unsigned timers = 0;
int ret;
- for_each_matching_node_and_match(np, __clksrc_of_table, &match) {
+ for_each_matching_node_and_match(np, __timer_of_table, &match) {
if (!of_device_is_available(np))
continue;
@@ -45,11 +45,11 @@ void __init clocksource_probe(void)
continue;
}
- clocksources++;
+ timers++;
}
- clocksources += acpi_probe_device_table(clksrc);
+ timers += acpi_probe_device_table(timer);
- if (!clocksources)
- pr_crit("%s: no matching clocksources found\n", __func__);
+ if (!timers)
+ pr_crit("%s: no matching timers found\n", __func__);
}
diff --git a/drivers/clocksource/timer-sp804.c b/drivers/clocksource/timer-sp804.c
index 2d575a8c..3ac9dec 100644
--- a/drivers/clocksource/timer-sp804.c
+++ b/drivers/clocksource/timer-sp804.c
@@ -287,7 +287,7 @@ err:
iounmap(base);
return ret;
}
-CLOCKSOURCE_OF_DECLARE(sp804, "arm,sp804", sp804_of_init);
+TIMER_OF_DECLARE(sp804, "arm,sp804", sp804_of_init);
static int __init integrator_cp_of_init(struct device_node *np)
{
@@ -335,4 +335,4 @@ err:
iounmap(base);
return ret;
}
-CLOCKSOURCE_OF_DECLARE(intcp, "arm,integrator-cp-timer", integrator_cp_of_init);
+TIMER_OF_DECLARE(intcp, "arm,integrator-cp-timer", integrator_cp_of_init);
diff --git a/drivers/clocksource/timer-stm32.c b/drivers/clocksource/timer-stm32.c
index 1b2574c..174d1243 100644
--- a/drivers/clocksource/timer-stm32.c
+++ b/drivers/clocksource/timer-stm32.c
@@ -187,4 +187,4 @@ err_clk_get:
return ret;
}
-CLOCKSOURCE_OF_DECLARE(stm32, "st,stm32-timer", stm32_clockevent_init);
+TIMER_OF_DECLARE(stm32, "st,stm32-timer", stm32_clockevent_init);
diff --git a/drivers/clocksource/timer-sun5i.c b/drivers/clocksource/timer-sun5i.c
index c4656c4..2a3fe83 100644
--- a/drivers/clocksource/timer-sun5i.c
+++ b/drivers/clocksource/timer-sun5i.c
@@ -359,7 +359,7 @@ static int __init sun5i_timer_init(struct device_node *node)
return sun5i_setup_clockevent(node, timer_base, clk, irq);
}
-CLOCKSOURCE_OF_DECLARE(sun5i_a13, "allwinner,sun5i-a13-hstimer",
+TIMER_OF_DECLARE(sun5i_a13, "allwinner,sun5i-a13-hstimer",
sun5i_timer_init);
-CLOCKSOURCE_OF_DECLARE(sun7i_a20, "allwinner,sun7i-a20-hstimer",
+TIMER_OF_DECLARE(sun7i_a20, "allwinner,sun7i-a20-hstimer",
sun5i_timer_init);
diff --git a/drivers/clocksource/timer-ti-32k.c b/drivers/clocksource/timer-ti-32k.c
index 6240677..880a861 100644
--- a/drivers/clocksource/timer-ti-32k.c
+++ b/drivers/clocksource/timer-ti-32k.c
@@ -124,5 +124,5 @@ static int __init ti_32k_timer_init(struct device_node *np)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(ti_32k_timer, "ti,omap-counter32k",
+TIMER_OF_DECLARE(ti_32k_timer, "ti,omap-counter32k",
ti_32k_timer_init);
diff --git a/drivers/clocksource/timer-u300.c b/drivers/clocksource/timer-u300.c
index 704e40c..be34b11 100644
--- a/drivers/clocksource/timer-u300.c
+++ b/drivers/clocksource/timer-u300.c
@@ -458,5 +458,5 @@ static int __init u300_timer_init_of(struct device_node *np)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(u300_timer, "stericsson,u300-apptimer",
+TIMER_OF_DECLARE(u300_timer, "stericsson,u300-apptimer",
u300_timer_init_of);
diff --git a/drivers/clocksource/versatile.c b/drivers/clocksource/versatile.c
index 220b490..39725d3 100644
--- a/drivers/clocksource/versatile.c
+++ b/drivers/clocksource/versatile.c
@@ -38,7 +38,7 @@ static int __init versatile_sched_clock_init(struct device_node *node)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(vexpress, "arm,vexpress-sysreg",
+TIMER_OF_DECLARE(vexpress, "arm,vexpress-sysreg",
versatile_sched_clock_init);
-CLOCKSOURCE_OF_DECLARE(versatile, "arm,versatile-sysreg",
+TIMER_OF_DECLARE(versatile, "arm,versatile-sysreg",
versatile_sched_clock_init);
diff --git a/drivers/clocksource/vf_pit_timer.c b/drivers/clocksource/vf_pit_timer.c
index e0849e2..0f92089 100644
--- a/drivers/clocksource/vf_pit_timer.c
+++ b/drivers/clocksource/vf_pit_timer.c
@@ -201,4 +201,4 @@ static int __init pit_timer_init(struct device_node *np)
return pit_clockevent_init(clk_rate, irq);
}
-CLOCKSOURCE_OF_DECLARE(vf610, "fsl,vf610-pit", pit_timer_init);
+TIMER_OF_DECLARE(vf610, "fsl,vf610-pit", pit_timer_init);
diff --git a/drivers/clocksource/vt8500_timer.c b/drivers/clocksource/vt8500_timer.c
index d02b510..e0f7489 100644
--- a/drivers/clocksource/vt8500_timer.c
+++ b/drivers/clocksource/vt8500_timer.c
@@ -165,4 +165,4 @@ static int __init vt8500_timer_init(struct device_node *np)
return 0;
}
-CLOCKSOURCE_OF_DECLARE(vt8500, "via,vt8500-timer", vt8500_timer_init);
+TIMER_OF_DECLARE(vt8500, "via,vt8500-timer", vt8500_timer_init);
diff --git a/drivers/clocksource/zevio-timer.c b/drivers/clocksource/zevio-timer.c
index 9a53f5e..a6a0338 100644
--- a/drivers/clocksource/zevio-timer.c
+++ b/drivers/clocksource/zevio-timer.c
@@ -215,4 +215,4 @@ static int __init zevio_timer_init(struct device_node *node)
return zevio_timer_add(node);
}
-CLOCKSOURCE_OF_DECLARE(zevio_timer, "lsi,zevio-timer", zevio_timer_init);
+TIMER_OF_DECLARE(zevio_timer, "lsi,zevio-timer", zevio_timer_init);
diff --git a/include/asm-generic/siginfo.h b/include/asm-generic/siginfo.h
deleted file mode 100644
index a2508a8..0000000
--- a/include/asm-generic/siginfo.h
+++ /dev/null
@@ -1,22 +0,0 @@
-#ifndef _ASM_GENERIC_SIGINFO_H
-#define _ASM_GENERIC_SIGINFO_H
-
-#include <uapi/asm-generic/siginfo.h>
-
-#define __SI_MASK 0xffff0000u
-#define __SI_KILL (0 << 16)
-#define __SI_TIMER (1 << 16)
-#define __SI_POLL (2 << 16)
-#define __SI_FAULT (3 << 16)
-#define __SI_CHLD (4 << 16)
-#define __SI_RT (5 << 16)
-#define __SI_MESGQ (6 << 16)
-#define __SI_SYS (7 << 16)
-#define __SI_CODE(T,N) ((T) | ((N) & 0xffff))
-
-struct siginfo;
-void do_schedule_next_timer(struct siginfo *info);
-
-extern int copy_siginfo_to_user(struct siginfo __user *to, const struct siginfo *from);
-
-#endif
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 314a0b9..0d64658 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -172,8 +172,7 @@
KEEP(*(__##name##_of_table)) \
KEEP(*(__##name##_of_table_end))
-#define CLKSRC_OF_TABLES() OF_TABLE(CONFIG_CLKSRC_OF, clksrc)
-#define CLKEVT_OF_TABLES() OF_TABLE(CONFIG_CLKEVT_OF, clkevt)
+#define TIMER_OF_TABLES() OF_TABLE(CONFIG_TIMER_OF, timer)
#define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip)
#define CLK_OF_TABLES() OF_TABLE(CONFIG_COMMON_CLK, clk)
#define IOMMU_OF_TABLES() OF_TABLE(CONFIG_OF_IOMMU, iommu)
@@ -557,15 +556,15 @@
MEM_DISCARD(init.rodata) \
CLK_OF_TABLES() \
RESERVEDMEM_OF_TABLES() \
- CLKSRC_OF_TABLES() \
- CLKEVT_OF_TABLES() \
+ TIMER_OF_TABLES() \
IOMMU_OF_TABLES() \
CPU_METHOD_OF_TABLES() \
CPUIDLE_METHOD_OF_TABLES() \
KERNEL_DTB() \
IRQCHIP_OF_MATCH_TABLE() \
ACPI_PROBE_TABLE(irqchip) \
- ACPI_PROBE_TABLE(clksrc) \
+ ACPI_PROBE_TABLE(timer) \
+ ACPI_PROBE_TABLE(iort) \
EARLYCON_TABLE()
#define INIT_TEXT \
diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h
index acc9ce0..a116926 100644
--- a/include/linux/clockchips.h
+++ b/include/linux/clockchips.h
@@ -223,13 +223,4 @@ static inline void tick_setup_hrtimer_broadcast(void) { }
#endif /* !CONFIG_GENERIC_CLOCKEVENTS */
-#define CLOCKEVENT_OF_DECLARE(name, compat, fn) \
- OF_DECLARE_1_RET(clkevt, name, compat, fn)
-
-#ifdef CONFIG_CLKEVT_PROBE
-extern int clockevent_probe(void);
-#else
-static inline int clockevent_probe(void) { return 0; }
-#endif
-
#endif /* _LINUX_CLOCKCHIPS_H */
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 8149045..a78cb18 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -250,16 +250,19 @@ extern int clocksource_mmio_init(void __iomem *, const char *,
extern int clocksource_i8253_init(void);
+#define TIMER_OF_DECLARE(name, compat, fn) \
+ OF_DECLARE_1_RET(timer, name, compat, fn)
+
#define CLOCKSOURCE_OF_DECLARE(name, compat, fn) \
- OF_DECLARE_1_RET(clksrc, name, compat, fn)
+ TIMER_OF_DECLARE(name, compat, fn)
-#ifdef CONFIG_CLKSRC_PROBE
-extern void clocksource_probe(void);
+#ifdef CONFIG_TIMER_PROBE
+extern void timer_probe(void);
#else
-static inline void clocksource_probe(void) {}
+static inline void timer_probe(void) {}
#endif
-#define CLOCKSOURCE_ACPI_DECLARE(name, table_id, fn) \
- ACPI_DECLARE_PROBE_ENTRY(clksrc, name, table_id, 0, NULL, 0, fn)
+#define TIMER_ACPI_DECLARE(name, table_id, fn) \
+ ACPI_DECLARE_PROBE_ENTRY(timer, name, table_id, 0, NULL, 0, fn)
#endif /* _LINUX_CLOCKSOURCE_H */
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 1c5f315..425563c 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -94,6 +94,10 @@ struct compat_itimerval {
struct compat_timeval it_value;
};
+struct itimerval;
+int get_compat_itimerval(struct itimerval *, const struct compat_itimerval __user *);
+int put_compat_itimerval(struct compat_itimerval __user *, const struct itimerval *);
+
struct compat_tms {
compat_clock_t tms_utime;
compat_clock_t tms_stime;
@@ -128,6 +132,10 @@ struct compat_timex {
compat_int_t:32; compat_int_t:32; compat_int_t:32;
};
+struct timex;
+int compat_get_timex(struct timex *, const struct compat_timex __user *);
+int compat_put_timex(struct compat_timex __user *, const struct timex *);
+
#define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
typedef struct {
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 8c5b10e..255edd5 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -452,11 +452,11 @@ static inline u64 hrtimer_forward_now(struct hrtimer *timer,
}
/* Precise sleep: */
-extern long hrtimer_nanosleep(struct timespec64 *rqtp,
- struct timespec __user *rmtp,
+
+extern int nanosleep_copyout(struct restart_block *, struct timespec *);
+extern long hrtimer_nanosleep(const struct timespec64 *rqtp,
const enum hrtimer_mode mode,
const clockid_t clockid);
-extern long hrtimer_nanosleep_restart(struct restart_block *restart_block);
extern void hrtimer_init_sleeper(struct hrtimer_sleeper *sl,
struct task_struct *tsk);
diff --git a/include/linux/posix-clock.h b/include/linux/posix-clock.h
index 83b22ae..38d8225 100644
--- a/include/linux/posix-clock.h
+++ b/include/linux/posix-clock.h
@@ -42,12 +42,6 @@ struct posix_clock;
* @clock_gettime: Read the current time
* @clock_getres: Get the clock resolution
* @clock_settime: Set the current time value
- * @timer_create: Create a new timer
- * @timer_delete: Remove a previously created timer
- * @timer_gettime: Get remaining time and interval of a timer
- * @timer_settime: Set a timer's initial expiration and interval
- * @fasync: Optional character device fasync method
- * @mmap: Optional character device mmap method
* @open: Optional character device open method
* @release: Optional character device release method
* @ioctl: Optional character device ioctl method
@@ -66,28 +60,12 @@ struct posix_clock_operations {
int (*clock_settime)(struct posix_clock *pc,
const struct timespec64 *ts);
- int (*timer_create) (struct posix_clock *pc, struct k_itimer *kit);
-
- int (*timer_delete) (struct posix_clock *pc, struct k_itimer *kit);
-
- void (*timer_gettime)(struct posix_clock *pc,
- struct k_itimer *kit, struct itimerspec64 *tsp);
-
- int (*timer_settime)(struct posix_clock *pc,
- struct k_itimer *kit, int flags,
- struct itimerspec64 *tsp, struct itimerspec64 *old);
/*
* Optional character device methods:
*/
- int (*fasync) (struct posix_clock *pc,
- int fd, struct file *file, int on);
-
long (*ioctl) (struct posix_clock *pc,
unsigned int cmd, unsigned long arg);
- int (*mmap) (struct posix_clock *pc,
- struct vm_area_struct *vma);
-
int (*open) (struct posix_clock *pc, fmode_t f_mode);
uint (*poll) (struct posix_clock *pc,
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index 8c1e43a..29f1b7f 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -7,6 +7,7 @@
#include <linux/timex.h>
#include <linux/alarmtimer.h>
+struct siginfo;
struct cpu_timer_list {
struct list_head entry;
@@ -48,81 +49,69 @@ struct cpu_timer_list {
#define FD_TO_CLOCKID(fd) ((~(clockid_t) (fd) << 3) | CLOCKFD)
#define CLOCKID_TO_FD(clk) ((unsigned int) ~((clk) >> 3))
-/* POSIX.1b interval timer structure. */
-struct k_itimer {
- struct list_head list; /* free/ allocate list */
- struct hlist_node t_hash;
- spinlock_t it_lock;
- clockid_t it_clock; /* which timer type */
- timer_t it_id; /* timer id */
- int it_overrun; /* overrun on pending signal */
- int it_overrun_last; /* overrun on last delivered signal */
- int it_requeue_pending; /* waiting to requeue this timer */
#define REQUEUE_PENDING 1
- int it_sigev_notify; /* notify word of sigevent struct */
- struct signal_struct *it_signal;
+
+/**
+ * struct k_itimer - POSIX.1b interval timer structure.
+ * @list: List head for binding the timer to signals->posix_timers
+ * @t_hash: Entry in the posix timer hash table
+ * @it_lock: Lock protecting the timer
+ * @kclock: Pointer to the k_clock struct handling this timer
+ * @it_clock: The posix timer clock id
+ * @it_id: The posix timer id for identifying the timer
+ * @it_active: Marker that timer is active
+ * @it_overrun: The overrun counter for pending signals
+ * @it_overrun_last: The overrun at the time of the last delivered signal
+ * @it_requeue_pending: Indicator that timer waits for being requeued on
+ * signal delivery
+ * @it_sigev_notify: The notify word of sigevent struct for signal delivery
+ * @it_interval: The interval for periodic timers
+ * @it_signal: Pointer to the creators signal struct
+ * @it_pid: The pid of the process/task targeted by the signal
+ * @it_process: The task to wakeup on clock_nanosleep (CPU timers)
+ * @sigq: Pointer to preallocated sigqueue
+ * @it: Union representing the various posix timer type
+ * internals. Also used for rcu freeing the timer.
+ */
+struct k_itimer {
+ struct list_head list;
+ struct hlist_node t_hash;
+ spinlock_t it_lock;
+ const struct k_clock *kclock;
+ clockid_t it_clock;
+ timer_t it_id;
+ int it_active;
+ int it_overrun;
+ int it_overrun_last;
+ int it_requeue_pending;
+ int it_sigev_notify;
+ ktime_t it_interval;
+ struct signal_struct *it_signal;
union {
- struct pid *it_pid; /* pid of process to send signal to */
- struct task_struct *it_process; /* for clock_nanosleep */
+ struct pid *it_pid;
+ struct task_struct *it_process;
};
- struct sigqueue *sigq; /* signal queue entry. */
+ struct sigqueue *sigq;
union {
struct {
- struct hrtimer timer;
- ktime_t interval;
+ struct hrtimer timer;
} real;
- struct cpu_timer_list cpu;
+ struct cpu_timer_list cpu;
struct {
- unsigned int clock;
- unsigned int node;
- unsigned long incr;
- unsigned long expires;
- } mmtimer;
- struct {
- struct alarm alarmtimer;
- ktime_t interval;
+ struct alarm alarmtimer;
} alarm;
- struct rcu_head rcu;
+ struct rcu_head rcu;
} it;
};
-struct k_clock {
- int (*clock_getres) (const clockid_t which_clock, struct timespec64 *tp);
- int (*clock_set) (const clockid_t which_clock,
- const struct timespec64 *tp);
- int (*clock_get) (const clockid_t which_clock, struct timespec64 *tp);
- int (*clock_adj) (const clockid_t which_clock, struct timex *tx);
- int (*timer_create) (struct k_itimer *timer);
- int (*nsleep) (const clockid_t which_clock, int flags,
- struct timespec64 *, struct timespec __user *);
- long (*nsleep_restart) (struct restart_block *restart_block);
- int (*timer_set) (struct k_itimer *timr, int flags,
- struct itimerspec64 *new_setting,
- struct itimerspec64 *old_setting);
- int (*timer_del) (struct k_itimer *timr);
-#define TIMER_RETRY 1
- void (*timer_get) (struct k_itimer *timr,
- struct itimerspec64 *cur_setting);
-};
-
-extern struct k_clock clock_posix_cpu;
-extern struct k_clock clock_posix_dynamic;
-
-void posix_timers_register_clock(const clockid_t clock_id, struct k_clock *new_clock);
-
-/* function to call to trigger timer event */
-int posix_timer_event(struct k_itimer *timr, int si_private);
-
-void posix_cpu_timer_schedule(struct k_itimer *timer);
-
void run_posix_cpu_timers(struct task_struct *task);
void posix_cpu_timers_exit(struct task_struct *task);
void posix_cpu_timers_exit_group(struct task_struct *task);
void set_process_cpu_timer(struct task_struct *task, unsigned int clock_idx,
u64 *newval, u64 *oldval);
-long clock_nanosleep_restart(struct restart_block *restart_block);
-
void update_rlimit_cpu(struct task_struct *task, unsigned long rlim_new);
+void posixtimer_rearm(struct siginfo *info);
+
#endif
diff --git a/include/linux/restart_block.h b/include/linux/restart_block.h
index 0d905d8..19df8422 100644
--- a/include/linux/restart_block.h
+++ b/include/linux/restart_block.h
@@ -11,6 +11,14 @@ struct timespec;
struct compat_timespec;
struct pollfd;
+enum timespec_type {
+ TT_NONE = 0,
+ TT_NATIVE = 1,
+#ifdef CONFIG_COMPAT
+ TT_COMPAT = 2,
+#endif
+};
+
/*
* System call restart block.
*/
@@ -29,10 +37,13 @@ struct restart_block {
/* For nanosleep */
struct {
clockid_t clockid;
- struct timespec __user *rmtp;
+ enum timespec_type type;
+ union {
+ struct timespec __user *rmtp;
#ifdef CONFIG_COMPAT
- struct compat_timespec __user *compat_rmtp;
+ struct compat_timespec __user *compat_rmtp;
#endif
+ };
u64 expires;
} nanosleep;
/* For poll */
diff --git a/include/linux/signal.h b/include/linux/signal.h
index 1f5a166..a39fedd 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -3,16 +3,13 @@
#include <linux/bug.h>
#include <linux/signal_types.h>
+#include <linux/string.h>
struct task_struct;
/* for sysctl */
extern int print_fatal_signals;
-#ifndef HAVE_ARCH_COPY_SIGINFO
-
-#include <linux/string.h>
-
static inline void copy_siginfo(struct siginfo *to, struct siginfo *from)
{
if (from->si_code < 0)
@@ -22,7 +19,7 @@ static inline void copy_siginfo(struct siginfo *to, struct siginfo *from)
memcpy(to, from, __ARCH_SI_PREAMBLE_SIZE + sizeof(from->_sifields._sigchld));
}
-#endif
+int copy_siginfo_to_user(struct siginfo __user *to, const struct siginfo *from);
/*
* Define some primitives to manipulate sigset_t.
diff --git a/include/linux/timekeeper_internal.h b/include/linux/timekeeper_internal.h
index f7043cc..0a0a53d 100644
--- a/include/linux/timekeeper_internal.h
+++ b/include/linux/timekeeper_internal.h
@@ -51,7 +51,7 @@ struct tk_read_base {
* @clock_was_set_seq: The sequence number of clock was set events
* @cs_was_changed_seq: The sequence number of clocksource change events
* @next_leap_ktime: CLOCK_MONOTONIC time value of a pending leap-second
- * @raw_time: Monotonic raw base time in timespec64 format
+ * @raw_sec: CLOCK_MONOTONIC_RAW time in seconds
* @cycle_interval: Number of clock cycles in one NTP interval
* @xtime_interval: Number of clock shifted nano seconds in one NTP
* interval.
@@ -93,7 +93,7 @@ struct timekeeper {
unsigned int clock_was_set_seq;
u8 cs_was_changed_seq;
ktime_t next_leap_ktime;
- struct timespec64 raw_time;
+ u64 raw_sec;
/* The following members are for timekeeping internal use */
u64 cycle_interval;
diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h
index 1abaf62..9c4eca6 100644
--- a/include/uapi/asm-generic/siginfo.h
+++ b/include/uapi/asm-generic/siginfo.h
@@ -151,7 +151,18 @@ typedef struct siginfo {
#define si_arch _sifields._sigsys._arch
#endif
-#ifndef __KERNEL__
+#ifdef __KERNEL__
+#define __SI_MASK 0xffff0000u
+#define __SI_KILL (0 << 16)
+#define __SI_TIMER (1 << 16)
+#define __SI_POLL (2 << 16)
+#define __SI_FAULT (3 << 16)
+#define __SI_CHLD (4 << 16)
+#define __SI_RT (5 << 16)
+#define __SI_MESGQ (6 << 16)
+#define __SI_SYS (7 << 16)
+#define __SI_CODE(T,N) ((T) | ((N) & 0xffff))
+#else /* __KERNEL__ */
#define __SI_KILL 0
#define __SI_TIMER 0
#define __SI_POLL 0
@@ -161,7 +172,7 @@ typedef struct siginfo {
#define __SI_MESGQ 0
#define __SI_SYS 0
#define __SI_CODE(T,N) (N)
-#endif
+#endif /* __KERNEL__ */
/*
* si_code values
diff --git a/include/uapi/linux/time.h b/include/uapi/linux/time.h
index e75e1b6..09299fc 100644
--- a/include/uapi/linux/time.h
+++ b/include/uapi/linux/time.h
@@ -54,7 +54,11 @@ struct itimerval {
#define CLOCK_BOOTTIME 7
#define CLOCK_REALTIME_ALARM 8
#define CLOCK_BOOTTIME_ALARM 9
-#define CLOCK_SGI_CYCLE 10 /* Hardware specific */
+/*
+ * The driver implementing this got removed. The clock ID is kept as a
+ * place holder. Do not reuse!
+ */
+#define CLOCK_SGI_CYCLE 10
#define CLOCK_TAI 11
#define MAX_CLOCKS 16
diff --git a/kernel/compat.c b/kernel/compat.c
index 933bcb3..ebd8bdc 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -30,100 +30,66 @@
#include <linux/uaccess.h>
-static int compat_get_timex(struct timex *txc, struct compat_timex __user *utp)
+int compat_get_timex(struct timex *txc, const struct compat_timex __user *utp)
{
- memset(txc, 0, sizeof(struct timex));
-
- if (!access_ok(VERIFY_READ, utp, sizeof(struct compat_timex)) ||
- __get_user(txc->modes, &utp->modes) ||
- __get_user(txc->offset, &utp->offset) ||
- __get_user(txc->freq, &utp->freq) ||
- __get_user(txc->maxerror, &utp->maxerror) ||
- __get_user(txc->esterror, &utp->esterror) ||
- __get_user(txc->status, &utp->status) ||
- __get_user(txc->constant, &utp->constant) ||
- __get_user(txc->precision, &utp->precision) ||
- __get_user(txc->tolerance, &utp->tolerance) ||
- __get_user(txc->time.tv_sec, &utp->time.tv_sec) ||
- __get_user(txc->time.tv_usec, &utp->time.tv_usec) ||
- __get_user(txc->tick, &utp->tick) ||
- __get_user(txc->ppsfreq, &utp->ppsfreq) ||
- __get_user(txc->jitter, &utp->jitter) ||
- __get_user(txc->shift, &utp->shift) ||
- __get_user(txc->stabil, &utp->stabil) ||
- __get_user(txc->jitcnt, &utp->jitcnt) ||
- __get_user(txc->calcnt, &utp->calcnt) ||
- __get_user(txc->errcnt, &utp->errcnt) ||
- __get_user(txc->stbcnt, &utp->stbcnt))
- return -EFAULT;
+ struct compat_timex tx32;
- return 0;
-}
-
-static int compat_put_timex(struct compat_timex __user *utp, struct timex *txc)
-{
- if (!access_ok(VERIFY_WRITE, utp, sizeof(struct compat_timex)) ||
- __put_user(txc->modes, &utp->modes) ||
- __put_user(txc->offset, &utp->offset) ||
- __put_user(txc->freq, &utp->freq) ||
- __put_user(txc->maxerror, &utp->maxerror) ||
- __put_user(txc->esterror, &utp->esterror) ||
- __put_user(txc->status, &utp->status) ||
- __put_user(txc->constant, &utp->constant) ||
- __put_user(txc->precision, &utp->precision) ||
- __put_user(txc->tolerance, &utp->tolerance) ||
- __put_user(txc->time.tv_sec, &utp->time.tv_sec) ||
- __put_user(txc->time.tv_usec, &utp->time.tv_usec) ||
- __put_user(txc->tick, &utp->tick) ||
- __put_user(txc->ppsfreq, &utp->ppsfreq) ||
- __put_user(txc->jitter, &utp->jitter) ||
- __put_user(txc->shift, &utp->shift) ||
- __put_user(txc->stabil, &utp->stabil) ||
- __put_user(txc->jitcnt, &utp->jitcnt) ||
- __put_user(txc->calcnt, &utp->calcnt) ||
- __put_user(txc->errcnt, &utp->errcnt) ||
- __put_user(txc->stbcnt, &utp->stbcnt) ||
- __put_user(txc->tai, &utp->tai))
+ if (copy_from_user(&tx32, utp, sizeof(struct compat_timex)))
return -EFAULT;
- return 0;
-}
-COMPAT_SYSCALL_DEFINE2(gettimeofday, struct compat_timeval __user *, tv,
- struct timezone __user *, tz)
-{
- if (tv) {
- struct timeval ktv;
- do_gettimeofday(&ktv);
- if (compat_put_timeval(&ktv, tv))
- return -EFAULT;
- }
- if (tz) {
- if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
- return -EFAULT;
- }
+ txc->modes = tx32.modes;
+ txc->offset = tx32.offset;
+ txc->freq = tx32.freq;
+ txc->maxerror = tx32.maxerror;
+ txc->esterror = tx32.esterror;
+ txc->status = tx32.status;
+ txc->constant = tx32.constant;
+ txc->precision = tx32.precision;
+ txc->tolerance = tx32.tolerance;
+ txc->time.tv_sec = tx32.time.tv_sec;
+ txc->time.tv_usec = tx32.time.tv_usec;
+ txc->tick = tx32.tick;
+ txc->ppsfreq = tx32.ppsfreq;
+ txc->jitter = tx32.jitter;
+ txc->shift = tx32.shift;
+ txc->stabil = tx32.stabil;
+ txc->jitcnt = tx32.jitcnt;
+ txc->calcnt = tx32.calcnt;
+ txc->errcnt = tx32.errcnt;
+ txc->stbcnt = tx32.stbcnt;
return 0;
}
-COMPAT_SYSCALL_DEFINE2(settimeofday, struct compat_timeval __user *, tv,
- struct timezone __user *, tz)
-{
- struct timespec64 new_ts;
- struct timeval user_tv;
- struct timezone new_tz;
-
- if (tv) {
- if (compat_get_timeval(&user_tv, tv))
- return -EFAULT;
- new_ts.tv_sec = user_tv.tv_sec;
- new_ts.tv_nsec = user_tv.tv_usec * NSEC_PER_USEC;
- }
- if (tz) {
- if (copy_from_user(&new_tz, tz, sizeof(*tz)))
- return -EFAULT;
- }
-
- return do_sys_settimeofday64(tv ? &new_ts : NULL, tz ? &new_tz : NULL);
+int compat_put_timex(struct compat_timex __user *utp, const struct timex *txc)
+{
+ struct compat_timex tx32;
+
+ memset(&tx32, 0, sizeof(struct compat_timex));
+ tx32.modes = txc->modes;
+ tx32.offset = txc->offset;
+ tx32.freq = txc->freq;
+ tx32.maxerror = txc->maxerror;
+ tx32.esterror = txc->esterror;
+ tx32.status = txc->status;
+ tx32.constant = txc->constant;
+ tx32.precision = txc->precision;
+ tx32.tolerance = txc->tolerance;
+ tx32.time.tv_sec = txc->time.tv_sec;
+ tx32.time.tv_usec = txc->time.tv_usec;
+ tx32.tick = txc->tick;
+ tx32.ppsfreq = txc->ppsfreq;
+ tx32.jitter = txc->jitter;
+ tx32.shift = txc->shift;
+ tx32.stabil = txc->stabil;
+ tx32.jitcnt = txc->jitcnt;
+ tx32.calcnt = txc->calcnt;
+ tx32.errcnt = txc->errcnt;
+ tx32.stbcnt = txc->stbcnt;
+ tx32.tai = txc->tai;
+ if (copy_to_user(utp, &tx32, sizeof(struct compat_timex)))
+ return -EFAULT;
+ return 0;
}
static int __compat_get_timeval(struct timeval *tv, const struct compat_timeval __user *ctv)
@@ -213,141 +179,28 @@ int compat_convert_timespec(struct timespec __user **kts,
return 0;
}
-static long compat_nanosleep_restart(struct restart_block *restart)
-{
- struct compat_timespec __user *rmtp;
- struct timespec rmt;
- mm_segment_t oldfs;
- long ret;
-
- restart->nanosleep.rmtp = (struct timespec __user *) &rmt;
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- ret = hrtimer_nanosleep_restart(restart);
- set_fs(oldfs);
-
- if (ret == -ERESTART_RESTARTBLOCK) {
- rmtp = restart->nanosleep.compat_rmtp;
-
- if (rmtp && compat_put_timespec(&rmt, rmtp))
- return -EFAULT;
- }
-
- return ret;
-}
-
-COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp,
- struct compat_timespec __user *, rmtp)
+int get_compat_itimerval(struct itimerval *o, const struct compat_itimerval __user *i)
{
- struct timespec tu, rmt;
- struct timespec64 tu64;
- mm_segment_t oldfs;
- long ret;
+ struct compat_itimerval v32;
- if (compat_get_timespec(&tu, rqtp))
+ if (copy_from_user(&v32, i, sizeof(struct compat_itimerval)))
return -EFAULT;
-
- tu64 = timespec_to_timespec64(tu);
- if (!timespec64_valid(&tu64))
- return -EINVAL;
-
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- ret = hrtimer_nanosleep(&tu64,
- rmtp ? (struct timespec __user *)&rmt : NULL,
- HRTIMER_MODE_REL, CLOCK_MONOTONIC);
- set_fs(oldfs);
-
- /*
- * hrtimer_nanosleep() can only return 0 or
- * -ERESTART_RESTARTBLOCK here because:
- *
- * - we call it with HRTIMER_MODE_REL and therefor exclude the
- * -ERESTARTNOHAND return path.
- *
- * - we supply the rmtp argument from the task stack (due to
- * the necessary compat conversion. So the update cannot
- * fail, which excludes the -EFAULT return path as well. If
- * it fails nevertheless we have a bigger problem and wont
- * reach this place anymore.
- *
- * - if the return value is 0, we do not have to update rmtp
- * because there is no remaining time.
- *
- * We check for -ERESTART_RESTARTBLOCK nevertheless if the
- * core implementation decides to return random nonsense.
- */
- if (ret == -ERESTART_RESTARTBLOCK) {
- struct restart_block *restart = &current->restart_block;
-
- restart->fn = compat_nanosleep_restart;
- restart->nanosleep.compat_rmtp = rmtp;
-
- if (rmtp && compat_put_timespec(&rmt, rmtp))
- return -EFAULT;
- }
- return ret;
-}
-
-static inline long get_compat_itimerval(struct itimerval *o,
- struct compat_itimerval __user *i)
-{
- return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
- (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) |
- __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) |
- __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) |
- __get_user(o->it_value.tv_usec, &i->it_value.tv_usec)));
-}
-
-static inline long put_compat_itimerval(struct compat_itimerval __user *o,
- struct itimerval *i)
-{
- return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
- (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) |
- __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) |
- __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) |
- __put_user(i->it_value.tv_usec, &o->it_value.tv_usec)));
-}
-
-asmlinkage long sys_ni_posix_timers(void);
-
-COMPAT_SYSCALL_DEFINE2(getitimer, int, which,
- struct compat_itimerval __user *, it)
-{
- struct itimerval kit;
- int error;
-
- if (!IS_ENABLED(CONFIG_POSIX_TIMERS))
- return sys_ni_posix_timers();
-
- error = do_getitimer(which, &kit);
- if (!error && put_compat_itimerval(it, &kit))
- error = -EFAULT;
- return error;
+ o->it_interval.tv_sec = v32.it_interval.tv_sec;
+ o->it_interval.tv_usec = v32.it_interval.tv_usec;
+ o->it_value.tv_sec = v32.it_value.tv_sec;
+ o->it_value.tv_usec = v32.it_value.tv_usec;
+ return 0;
}
-COMPAT_SYSCALL_DEFINE3(setitimer, int, which,
- struct compat_itimerval __user *, in,
- struct compat_itimerval __user *, out)
+int put_compat_itimerval(struct compat_itimerval __user *o, const struct itimerval *i)
{
- struct itimerval kin, kout;
- int error;
-
- if (!IS_ENABLED(CONFIG_POSIX_TIMERS))
- return sys_ni_posix_timers();
+ struct compat_itimerval v32;
- if (in) {
- if (get_compat_itimerval(&kin, in))
- return -EFAULT;
- } else
- memset(&kin, 0, sizeof(kin));
-
- error = do_setitimer(which, &kin, out ? &kout : NULL);
- if (error || !out)
- return error;
- if (put_compat_itimerval(out, &kout))
- return -EFAULT;
- return 0;
+ v32.it_interval.tv_sec = i->it_interval.tv_sec;
+ v32.it_interval.tv_usec = i->it_interval.tv_usec;
+ v32.it_value.tv_sec = i->it_value.tv_sec;
+ v32.it_value.tv_usec = i->it_value.tv_usec;
+ return copy_to_user(o, &v32, sizeof(struct compat_itimerval)) ? -EFAULT : 0;
}
static compat_clock_t clock_t_to_compat_clock_t(clock_t x)
@@ -689,193 +542,6 @@ int put_compat_itimerspec(struct compat_itimerspec __user *dst,
return 0;
}
-COMPAT_SYSCALL_DEFINE3(timer_create, clockid_t, which_clock,
- struct compat_sigevent __user *, timer_event_spec,
- timer_t __user *, created_timer_id)
-{
- struct sigevent __user *event = NULL;
-
- if (timer_event_spec) {
- struct sigevent kevent;
-
- event = compat_alloc_user_space(sizeof(*event));
- if (get_compat_sigevent(&kevent, timer_event_spec) ||
- copy_to_user(event, &kevent, sizeof(*event)))
- return -EFAULT;
- }
-
- return sys_timer_create(which_clock, event, created_timer_id);
-}
-
-COMPAT_SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
- struct compat_itimerspec __user *, new,
- struct compat_itimerspec __user *, old)
-{
- long err;
- mm_segment_t oldfs;
- struct itimerspec newts, oldts;
-
- if (!new)
- return -EINVAL;
- if (get_compat_itimerspec(&newts, new))
- return -EFAULT;
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_timer_settime(timer_id, flags,
- (struct itimerspec __user *) &newts,
- (struct itimerspec __user *) &oldts);
- set_fs(oldfs);
- if (!err && old && put_compat_itimerspec(old, &oldts))
- return -EFAULT;
- return err;
-}
-
-COMPAT_SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
- struct compat_itimerspec __user *, setting)
-{
- long err;
- mm_segment_t oldfs;
- struct itimerspec ts;
-
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_timer_gettime(timer_id,
- (struct itimerspec __user *) &ts);
- set_fs(oldfs);
- if (!err && put_compat_itimerspec(setting, &ts))
- return -EFAULT;
- return err;
-}
-
-COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock,
- struct compat_timespec __user *, tp)
-{
- long err;
- mm_segment_t oldfs;
- struct timespec ts;
-
- if (compat_get_timespec(&ts, tp))
- return -EFAULT;
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_clock_settime(which_clock,
- (struct timespec __user *) &ts);
- set_fs(oldfs);
- return err;
-}
-
-COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
- struct compat_timespec __user *, tp)
-{
- long err;
- mm_segment_t oldfs;
- struct timespec ts;
-
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_clock_gettime(which_clock,
- (struct timespec __user *) &ts);
- set_fs(oldfs);
- if (!err && compat_put_timespec(&ts, tp))
- return -EFAULT;
- return err;
-}
-
-COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock,
- struct compat_timex __user *, utp)
-{
- struct timex txc;
- mm_segment_t oldfs;
- int err, ret;
-
- err = compat_get_timex(&txc, utp);
- if (err)
- return err;
-
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_clock_adjtime(which_clock, (struct timex __user *) &txc);
- set_fs(oldfs);
-
- err = compat_put_timex(utp, &txc);
- if (err)
- return err;
-
- return ret;
-}
-
-COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
- struct compat_timespec __user *, tp)
-{
- long err;
- mm_segment_t oldfs;
- struct timespec ts;
-
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_clock_getres(which_clock,
- (struct timespec __user *) &ts);
- set_fs(oldfs);
- if (!err && tp && compat_put_timespec(&ts, tp))
- return -EFAULT;
- return err;
-}
-
-static long compat_clock_nanosleep_restart(struct restart_block *restart)
-{
- long err;
- mm_segment_t oldfs;
- struct timespec tu;
- struct compat_timespec __user *rmtp = restart->nanosleep.compat_rmtp;
-
- restart->nanosleep.rmtp = (struct timespec __user *) &tu;
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = clock_nanosleep_restart(restart);
- set_fs(oldfs);
-
- if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
- compat_put_timespec(&tu, rmtp))
- return -EFAULT;
-
- if (err == -ERESTART_RESTARTBLOCK) {
- restart->fn = compat_clock_nanosleep_restart;
- restart->nanosleep.compat_rmtp = rmtp;
- }
- return err;
-}
-
-COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags,
- struct compat_timespec __user *, rqtp,
- struct compat_timespec __user *, rmtp)
-{
- long err;
- mm_segment_t oldfs;
- struct timespec in, out;
- struct restart_block *restart;
-
- if (compat_get_timespec(&in, rqtp))
- return -EFAULT;
-
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_clock_nanosleep(which_clock, flags,
- (struct timespec __user *) &in,
- (struct timespec __user *) &out);
- set_fs(oldfs);
-
- if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
- compat_put_timespec(&out, rmtp))
- return -EFAULT;
-
- if (err == -ERESTART_RESTARTBLOCK) {
- restart = &current->restart_block;
- restart->fn = compat_clock_nanosleep_restart;
- restart->nanosleep.compat_rmtp = rmtp;
- }
- return err;
-}
-
/*
* We currently only need the following fields from the sigevent
* structure: sigev_value, sigev_signo, sig_notify and (sometimes
@@ -1035,64 +701,6 @@ COMPAT_SYSCALL_DEFINE4(rt_sigtimedwait, compat_sigset_t __user *, uthese,
return ret;
}
-#ifdef __ARCH_WANT_COMPAT_SYS_TIME
-
-/* compat_time_t is a 32 bit "long" and needs to get converted. */
-
-COMPAT_SYSCALL_DEFINE1(time, compat_time_t __user *, tloc)
-{
- compat_time_t i;
- struct timeval tv;
-
- do_gettimeofday(&tv);
- i = tv.tv_sec;
-
- if (tloc) {
- if (put_user(i,tloc))
- return -EFAULT;
- }
- force_successful_syscall_return();
- return i;
-}
-
-COMPAT_SYSCALL_DEFINE1(stime, compat_time_t __user *, tptr)
-{
- struct timespec tv;
- int err;
-
- if (get_user(tv.tv_sec, tptr))
- return -EFAULT;
-
- tv.tv_nsec = 0;
-
- err = security_settime(&tv, NULL);
- if (err)
- return err;
-
- do_settimeofday(&tv);
- return 0;
-}
-
-#endif /* __ARCH_WANT_COMPAT_SYS_TIME */
-
-COMPAT_SYSCALL_DEFINE1(adjtimex, struct compat_timex __user *, utp)
-{
- struct timex txc;
- int err, ret;
-
- err = compat_get_timex(&txc, utp);
- if (err)
- return err;
-
- ret = do_adjtimex(&txc);
-
- err = compat_put_timex(utp, &txc);
- if (err)
- return err;
-
- return ret;
-}
-
#ifdef CONFIG_NUMA
COMPAT_SYSCALL_DEFINE6(move_pages, pid_t, pid, compat_ulong_t, nr_pages,
compat_uptr_t __user *, pages32,
diff --git a/kernel/signal.c b/kernel/signal.c
index 9b28954..35a570f 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -39,6 +39,7 @@
#include <linux/compat.h>
#include <linux/cn_proc.h>
#include <linux/compiler.h>
+#include <linux/posix-timers.h>
#define CREATE_TRACE_POINTS
#include <trace/events/signal.h>
@@ -637,7 +638,7 @@ int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info)
* about to disable them again anyway.
*/
spin_unlock(&tsk->sighand->siglock);
- do_schedule_next_timer(info);
+ posixtimer_rearm(info);
spin_lock(&tsk->sighand->siglock);
}
#endif
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index ee2f420..c991cf2 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -27,6 +27,9 @@
#include <linux/posix-timers.h>
#include <linux/workqueue.h>
#include <linux/freezer.h>
+#include <linux/compat.h>
+
+#include "posix-timers.h"
#define CREATE_TRACE_POINTS
#include <trace/events/alarmtimer.h>
@@ -45,11 +48,13 @@ static struct alarm_base {
clockid_t base_clockid;
} alarm_bases[ALARM_NUMTYPE];
+#if defined(CONFIG_POSIX_TIMERS) || defined(CONFIG_RTC_CLASS)
/* freezer information to handle clock_nanosleep triggered wakeups */
static enum alarmtimer_type freezer_alarmtype;
static ktime_t freezer_expires;
static ktime_t freezer_delta;
static DEFINE_SPINLOCK(freezer_delta_lock);
+#endif
static struct wakeup_source *ws;
@@ -307,38 +312,6 @@ static int alarmtimer_resume(struct device *dev)
}
#endif
-static void alarmtimer_freezerset(ktime_t absexp, enum alarmtimer_type type)
-{
- struct alarm_base *base;
- unsigned long flags;
- ktime_t delta;
-
- switch(type) {
- case ALARM_REALTIME:
- base = &alarm_bases[ALARM_REALTIME];
- type = ALARM_REALTIME_FREEZER;
- break;
- case ALARM_BOOTTIME:
- base = &alarm_bases[ALARM_BOOTTIME];
- type = ALARM_BOOTTIME_FREEZER;
- break;
- default:
- WARN_ONCE(1, "Invalid alarm type: %d\n", type);
- return;
- }
-
- delta = ktime_sub(absexp, base->gettime());
-
- spin_lock_irqsave(&freezer_delta_lock, flags);
- if (!freezer_delta || (delta < freezer_delta)) {
- freezer_delta = delta;
- freezer_expires = absexp;
- freezer_alarmtype = type;
- }
- spin_unlock_irqrestore(&freezer_delta_lock, flags);
-}
-
-
/**
* alarm_init - Initialize an alarm structure
* @alarm: ptr to alarm to be initialized
@@ -488,6 +461,38 @@ u64 alarm_forward_now(struct alarm *alarm, ktime_t interval)
}
EXPORT_SYMBOL_GPL(alarm_forward_now);
+#ifdef CONFIG_POSIX_TIMERS
+
+static void alarmtimer_freezerset(ktime_t absexp, enum alarmtimer_type type)
+{
+ struct alarm_base *base;
+ unsigned long flags;
+ ktime_t delta;
+
+ switch(type) {
+ case ALARM_REALTIME:
+ base = &alarm_bases[ALARM_REALTIME];
+ type = ALARM_REALTIME_FREEZER;
+ break;
+ case ALARM_BOOTTIME:
+ base = &alarm_bases[ALARM_BOOTTIME];
+ type = ALARM_BOOTTIME_FREEZER;
+ break;
+ default:
+ WARN_ONCE(1, "Invalid alarm type: %d\n", type);
+ return;
+ }
+
+ delta = ktime_sub(absexp, base->gettime());
+
+ spin_lock_irqsave(&freezer_delta_lock, flags);
+ if (!freezer_delta || (delta < freezer_delta)) {
+ freezer_delta = delta;
+ freezer_expires = absexp;
+ freezer_alarmtype = type;
+ }
+ spin_unlock_irqrestore(&freezer_delta_lock, flags);
+}
/**
* clock2alarm - helper that converts from clockid to alarmtypes
@@ -511,22 +516,26 @@ static enum alarmtimer_type clock2alarm(clockid_t clockid)
static enum alarmtimer_restart alarm_handle_timer(struct alarm *alarm,
ktime_t now)
{
- unsigned long flags;
struct k_itimer *ptr = container_of(alarm, struct k_itimer,
- it.alarm.alarmtimer);
+ it.alarm.alarmtimer);
enum alarmtimer_restart result = ALARMTIMER_NORESTART;
+ unsigned long flags;
+ int si_private = 0;
spin_lock_irqsave(&ptr->it_lock, flags);
- if ((ptr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE) {
- if (IS_ENABLED(CONFIG_POSIX_TIMERS) &&
- posix_timer_event(ptr, 0) != 0)
- ptr->it_overrun++;
- }
- /* Re-add periodic timers */
- if (ptr->it.alarm.interval) {
- ptr->it_overrun += alarm_forward(alarm, now,
- ptr->it.alarm.interval);
+ ptr->it_active = 0;
+ if (ptr->it_interval)
+ si_private = ++ptr->it_requeue_pending;
+
+ if (posix_timer_event(ptr, si_private) && ptr->it_interval) {
+ /*
+ * Handle ignored signals and rearm the timer. This will go
+ * away once we handle ignored signals proper.
+ */
+ ptr->it_overrun += alarm_forward_now(alarm, ptr->it_interval);
+ ++ptr->it_requeue_pending;
+ ptr->it_active = 1;
result = ALARMTIMER_RESTART;
}
spin_unlock_irqrestore(&ptr->it_lock, flags);
@@ -535,6 +544,72 @@ static enum alarmtimer_restart alarm_handle_timer(struct alarm *alarm,
}
/**
+ * alarm_timer_rearm - Posix timer callback for rearming timer
+ * @timr: Pointer to the posixtimer data struct
+ */
+static void alarm_timer_rearm(struct k_itimer *timr)
+{
+ struct alarm *alarm = &timr->it.alarm.alarmtimer;
+
+ timr->it_overrun += alarm_forward_now(alarm, timr->it_interval);
+ alarm_start(alarm, alarm->node.expires);
+}
+
+/**
+ * alarm_timer_forward - Posix timer callback for forwarding timer
+ * @timr: Pointer to the posixtimer data struct
+ * @now: Current time to forward the timer against
+ */
+static int alarm_timer_forward(struct k_itimer *timr, ktime_t now)
+{
+ struct alarm *alarm = &timr->it.alarm.alarmtimer;
+
+ return (int) alarm_forward(alarm, timr->it_interval, now);
+}
+
+/**
+ * alarm_timer_remaining - Posix timer callback to retrieve remaining time
+ * @timr: Pointer to the posixtimer data struct
+ * @now: Current time to calculate against
+ */
+static ktime_t alarm_timer_remaining(struct k_itimer *timr, ktime_t now)
+{
+ struct alarm *alarm = &timr->it.alarm.alarmtimer;
+
+ return ktime_sub(now, alarm->node.expires);
+}
+
+/**
+ * alarm_timer_try_to_cancel - Posix timer callback to cancel a timer
+ * @timr: Pointer to the posixtimer data struct
+ */
+static int alarm_timer_try_to_cancel(struct k_itimer *timr)
+{
+ return alarm_try_to_cancel(&timr->it.alarm.alarmtimer);
+}
+
+/**
+ * alarm_timer_arm - Posix timer callback to arm a timer
+ * @timr: Pointer to the posixtimer data struct
+ * @expires: The new expiry time
+ * @absolute: Expiry value is absolute time
+ * @sigev_none: Posix timer does not deliver signals
+ */
+static void alarm_timer_arm(struct k_itimer *timr, ktime_t expires,
+ bool absolute, bool sigev_none)
+{
+ struct alarm *alarm = &timr->it.alarm.alarmtimer;
+ struct alarm_base *base = &alarm_bases[alarm->type];
+
+ if (!absolute)
+ expires = ktime_add_safe(expires, base->gettime());
+ if (sigev_none)
+ alarm->node.expires = expires;
+ else
+ alarm_start(&timr->it.alarm.alarmtimer, expires);
+}
+
+/**
* alarm_clock_getres - posix getres interface
* @which_clock: clockid
* @tp: timespec to fill
@@ -591,97 +666,6 @@ static int alarm_timer_create(struct k_itimer *new_timer)
}
/**
- * alarm_timer_get - posix timer_get interface
- * @new_timer: k_itimer pointer
- * @cur_setting: itimerspec data to fill
- *
- * Copies out the current itimerspec data
- */
-static void alarm_timer_get(struct k_itimer *timr,
- struct itimerspec64 *cur_setting)
-{
- ktime_t relative_expiry_time =
- alarm_expires_remaining(&(timr->it.alarm.alarmtimer));
-
- if (ktime_to_ns(relative_expiry_time) > 0) {
- cur_setting->it_value = ktime_to_timespec64(relative_expiry_time);
- } else {
- cur_setting->it_value.tv_sec = 0;
- cur_setting->it_value.tv_nsec = 0;
- }
-
- cur_setting->it_interval = ktime_to_timespec64(timr->it.alarm.interval);
-}
-
-/**
- * alarm_timer_del - posix timer_del interface
- * @timr: k_itimer pointer to be deleted
- *
- * Cancels any programmed alarms for the given timer.
- */
-static int alarm_timer_del(struct k_itimer *timr)
-{
- if (!rtcdev)
- return -ENOTSUPP;
-
- if (alarm_try_to_cancel(&timr->it.alarm.alarmtimer) < 0)
- return TIMER_RETRY;
-
- return 0;
-}
-
-/**
- * alarm_timer_set - posix timer_set interface
- * @timr: k_itimer pointer to be deleted
- * @flags: timer flags
- * @new_setting: itimerspec to be used
- * @old_setting: itimerspec being replaced
- *
- * Sets the timer to new_setting, and starts the timer.
- */
-static int alarm_timer_set(struct k_itimer *timr, int flags,
- struct itimerspec64 *new_setting,
- struct itimerspec64 *old_setting)
-{
- ktime_t exp;
-
- if (!rtcdev)
- return -ENOTSUPP;
-
- if (flags & ~TIMER_ABSTIME)
- return -EINVAL;
-
- if (old_setting)
- alarm_timer_get(timr, old_setting);
-
- /* If the timer was already set, cancel it */
- if (alarm_try_to_cancel(&timr->it.alarm.alarmtimer) < 0)
- return TIMER_RETRY;
-
- /* start the timer */
- timr->it.alarm.interval = timespec64_to_ktime(new_setting->it_interval);
-
- /*
- * Rate limit to the tick as a hot fix to prevent DOS. Will be
- * mopped up later.
- */
- if (timr->it.alarm.interval < TICK_NSEC)
- timr->it.alarm.interval = TICK_NSEC;
-
- exp = timespec64_to_ktime(new_setting->it_value);
- /* Convert (if necessary) to absolute time */
- if (flags != TIMER_ABSTIME) {
- ktime_t now;
-
- now = alarm_bases[timr->it.alarm.alarmtimer.type].gettime();
- exp = ktime_add_safe(now, exp);
- }
-
- alarm_start(&timr->it.alarm.alarmtimer, exp);
- return 0;
-}
-
-/**
* alarmtimer_nsleep_wakeup - Wakeup function for alarm_timer_nsleep
* @alarm: ptr to alarm that fired
*
@@ -705,8 +689,10 @@ static enum alarmtimer_restart alarmtimer_nsleep_wakeup(struct alarm *alarm,
*
* Sets the alarm timer and sleeps until it is fired or interrupted.
*/
-static int alarmtimer_do_nsleep(struct alarm *alarm, ktime_t absexp)
+static int alarmtimer_do_nsleep(struct alarm *alarm, ktime_t absexp,
+ enum alarmtimer_type type)
{
+ struct restart_block *restart;
alarm->data = (void *)current;
do {
set_current_state(TASK_INTERRUPTIBLE);
@@ -719,36 +705,25 @@ static int alarmtimer_do_nsleep(struct alarm *alarm, ktime_t absexp)
__set_current_state(TASK_RUNNING);
- return (alarm->data == NULL);
-}
-
-
-/**
- * update_rmtp - Update remaining timespec value
- * @exp: expiration time
- * @type: timer type
- * @rmtp: user pointer to remaining timepsec value
- *
- * Helper function that fills in rmtp value with time between
- * now and the exp value
- */
-static int update_rmtp(ktime_t exp, enum alarmtimer_type type,
- struct timespec __user *rmtp)
-{
- struct timespec rmt;
- ktime_t rem;
-
- rem = ktime_sub(exp, alarm_bases[type].gettime());
-
- if (rem <= 0)
+ if (!alarm->data)
return 0;
- rmt = ktime_to_timespec(rem);
- if (copy_to_user(rmtp, &rmt, sizeof(*rmtp)))
- return -EFAULT;
+ if (freezing(current))
+ alarmtimer_freezerset(absexp, type);
+ restart = &current->restart_block;
+ if (restart->nanosleep.type != TT_NONE) {
+ struct timespec rmt;
+ ktime_t rem;
+
+ rem = ktime_sub(absexp, alarm_bases[type].gettime());
- return 1;
+ if (rem <= 0)
+ return 0;
+ rmt = ktime_to_timespec(rem);
+ return nanosleep_copyout(restart, &rmt);
+ }
+ return -ERESTART_RESTARTBLOCK;
}
/**
@@ -760,32 +735,12 @@ static int update_rmtp(ktime_t exp, enum alarmtimer_type type,
static long __sched alarm_timer_nsleep_restart(struct restart_block *restart)
{
enum alarmtimer_type type = restart->nanosleep.clockid;
- ktime_t exp;
- struct timespec __user *rmtp;
+ ktime_t exp = restart->nanosleep.expires;
struct alarm alarm;
- int ret = 0;
- exp = restart->nanosleep.expires;
alarm_init(&alarm, type, alarmtimer_nsleep_wakeup);
- if (alarmtimer_do_nsleep(&alarm, exp))
- goto out;
-
- if (freezing(current))
- alarmtimer_freezerset(exp, type);
-
- rmtp = restart->nanosleep.rmtp;
- if (rmtp) {
- ret = update_rmtp(exp, type, rmtp);
- if (ret <= 0)
- goto out;
- }
-
-
- /* The other values in restart are already filled in */
- ret = -ERESTART_RESTARTBLOCK;
-out:
- return ret;
+ return alarmtimer_do_nsleep(&alarm, exp, type);
}
/**
@@ -798,11 +753,10 @@ out:
* Handles clock_nanosleep calls against _ALARM clockids
*/
static int alarm_timer_nsleep(const clockid_t which_clock, int flags,
- struct timespec64 *tsreq,
- struct timespec __user *rmtp)
+ const struct timespec64 *tsreq)
{
enum alarmtimer_type type = clock2alarm(which_clock);
- struct restart_block *restart;
+ struct restart_block *restart = &current->restart_block;
struct alarm alarm;
ktime_t exp;
int ret = 0;
@@ -825,35 +779,36 @@ static int alarm_timer_nsleep(const clockid_t which_clock, int flags,
exp = ktime_add(now, exp);
}
- if (alarmtimer_do_nsleep(&alarm, exp))
- goto out;
-
- if (freezing(current))
- alarmtimer_freezerset(exp, type);
+ ret = alarmtimer_do_nsleep(&alarm, exp, type);
+ if (ret != -ERESTART_RESTARTBLOCK)
+ return ret;
/* abs timers don't set remaining time or restart */
- if (flags == TIMER_ABSTIME) {
- ret = -ERESTARTNOHAND;
- goto out;
- }
+ if (flags == TIMER_ABSTIME)
+ return -ERESTARTNOHAND;
- if (rmtp) {
- ret = update_rmtp(exp, type, rmtp);
- if (ret <= 0)
- goto out;
- }
-
- restart = &current->restart_block;
restart->fn = alarm_timer_nsleep_restart;
restart->nanosleep.clockid = type;
restart->nanosleep.expires = exp;
- restart->nanosleep.rmtp = rmtp;
- ret = -ERESTART_RESTARTBLOCK;
-
-out:
return ret;
}
+const struct k_clock alarm_clock = {
+ .clock_getres = alarm_clock_getres,
+ .clock_get = alarm_clock_get,
+ .timer_create = alarm_timer_create,
+ .timer_set = common_timer_set,
+ .timer_del = common_timer_del,
+ .timer_get = common_timer_get,
+ .timer_arm = alarm_timer_arm,
+ .timer_rearm = alarm_timer_rearm,
+ .timer_forward = alarm_timer_forward,
+ .timer_remaining = alarm_timer_remaining,
+ .timer_try_to_cancel = alarm_timer_try_to_cancel,
+ .nsleep = alarm_timer_nsleep,
+};
+#endif /* CONFIG_POSIX_TIMERS */
+
/* Suspend hook structures */
static const struct dev_pm_ops alarmtimer_pm_ops = {
@@ -879,23 +834,9 @@ static int __init alarmtimer_init(void)
struct platform_device *pdev;
int error = 0;
int i;
- struct k_clock alarm_clock = {
- .clock_getres = alarm_clock_getres,
- .clock_get = alarm_clock_get,
- .timer_create = alarm_timer_create,
- .timer_set = alarm_timer_set,
- .timer_del = alarm_timer_del,
- .timer_get = alarm_timer_get,
- .nsleep = alarm_timer_nsleep,
- };
alarmtimer_rtc_timer_init();
- if (IS_ENABLED(CONFIG_POSIX_TIMERS)) {
- posix_timers_register_clock(CLOCK_REALTIME_ALARM, &alarm_clock);
- posix_timers_register_clock(CLOCK_BOOTTIME_ALARM, &alarm_clock);
- }
-
/* Initialize alarm bases */
alarm_bases[ALARM_REALTIME].base_clockid = CLOCK_REALTIME;
alarm_bases[ALARM_REALTIME].gettime = &ktime_get_real;
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index ac053bb..81da124 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -51,6 +51,7 @@
#include <linux/sched/debug.h>
#include <linux/timer.h>
#include <linux/freezer.h>
+#include <linux/compat.h>
#include <linux/uaccess.h>
@@ -1439,8 +1440,29 @@ void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, struct task_struct *task)
}
EXPORT_SYMBOL_GPL(hrtimer_init_sleeper);
+int nanosleep_copyout(struct restart_block *restart, struct timespec *ts)
+{
+ switch(restart->nanosleep.type) {
+#ifdef CONFIG_COMPAT
+ case TT_COMPAT:
+ if (compat_put_timespec(ts, restart->nanosleep.compat_rmtp))
+ return -EFAULT;
+ break;
+#endif
+ case TT_NATIVE:
+ if (copy_to_user(restart->nanosleep.rmtp, ts, sizeof(struct timespec)))
+ return -EFAULT;
+ break;
+ default:
+ BUG();
+ }
+ return -ERESTART_RESTARTBLOCK;
+}
+
static int __sched do_nanosleep(struct hrtimer_sleeper *t, enum hrtimer_mode mode)
{
+ struct restart_block *restart;
+
hrtimer_init_sleeper(t, current);
do {
@@ -1457,53 +1479,38 @@ static int __sched do_nanosleep(struct hrtimer_sleeper *t, enum hrtimer_mode mod
__set_current_state(TASK_RUNNING);
- return t->task == NULL;
-}
-
-static int update_rmtp(struct hrtimer *timer, struct timespec __user *rmtp)
-{
- struct timespec rmt;
- ktime_t rem;
-
- rem = hrtimer_expires_remaining(timer);
- if (rem <= 0)
+ if (!t->task)
return 0;
- rmt = ktime_to_timespec(rem);
- if (copy_to_user(rmtp, &rmt, sizeof(*rmtp)))
- return -EFAULT;
+ restart = &current->restart_block;
+ if (restart->nanosleep.type != TT_NONE) {
+ ktime_t rem = hrtimer_expires_remaining(&t->timer);
+ struct timespec rmt;
- return 1;
+ if (rem <= 0)
+ return 0;
+ rmt = ktime_to_timespec(rem);
+
+ return nanosleep_copyout(restart, &rmt);
+ }
+ return -ERESTART_RESTARTBLOCK;
}
-long __sched hrtimer_nanosleep_restart(struct restart_block *restart)
+static long __sched hrtimer_nanosleep_restart(struct restart_block *restart)
{
struct hrtimer_sleeper t;
- struct timespec __user *rmtp;
- int ret = 0;
+ int ret;
hrtimer_init_on_stack(&t.timer, restart->nanosleep.clockid,
HRTIMER_MODE_ABS);
hrtimer_set_expires_tv64(&t.timer, restart->nanosleep.expires);
- if (do_nanosleep(&t, HRTIMER_MODE_ABS))
- goto out;
-
- rmtp = restart->nanosleep.rmtp;
- if (rmtp) {
- ret = update_rmtp(&t.timer, rmtp);
- if (ret <= 0)
- goto out;
- }
-
- /* The other values in restart are already filled in */
- ret = -ERESTART_RESTARTBLOCK;
-out:
+ ret = do_nanosleep(&t, HRTIMER_MODE_ABS);
destroy_hrtimer_on_stack(&t.timer);
return ret;
}
-long hrtimer_nanosleep(struct timespec64 *rqtp, struct timespec __user *rmtp,
+long hrtimer_nanosleep(const struct timespec64 *rqtp,
const enum hrtimer_mode mode, const clockid_t clockid)
{
struct restart_block *restart;
@@ -1517,7 +1524,8 @@ long hrtimer_nanosleep(struct timespec64 *rqtp, struct timespec __user *rmtp,
hrtimer_init_on_stack(&t.timer, clockid, mode);
hrtimer_set_expires_range_ns(&t.timer, timespec64_to_ktime(*rqtp), slack);
- if (do_nanosleep(&t, mode))
+ ret = do_nanosleep(&t, mode);
+ if (ret != -ERESTART_RESTARTBLOCK)
goto out;
/* Absolute timers do not update the rmtp value and restart: */
@@ -1526,19 +1534,10 @@ long hrtimer_nanosleep(struct timespec64 *rqtp, struct timespec __user *rmtp,
goto out;
}
- if (rmtp) {
- ret = update_rmtp(&t.timer, rmtp);
- if (ret <= 0)
- goto out;
- }
-
restart = &current->restart_block;
restart->fn = hrtimer_nanosleep_restart;
restart->nanosleep.clockid = t.timer.base->clockid;
- restart->nanosleep.rmtp = rmtp;
restart->nanosleep.expires = hrtimer_get_expires_tv64(&t.timer);
-
- ret = -ERESTART_RESTARTBLOCK;
out:
destroy_hrtimer_on_stack(&t.timer);
return ret;
@@ -1557,8 +1556,31 @@ SYSCALL_DEFINE2(nanosleep, struct timespec __user *, rqtp,
if (!timespec64_valid(&tu64))
return -EINVAL;
- return hrtimer_nanosleep(&tu64, rmtp, HRTIMER_MODE_REL, CLOCK_MONOTONIC);
+ current->restart_block.nanosleep.type = rmtp ? TT_NATIVE : TT_NONE;
+ current->restart_block.nanosleep.rmtp = rmtp;
+ return hrtimer_nanosleep(&tu64, HRTIMER_MODE_REL, CLOCK_MONOTONIC);
+}
+
+#ifdef CONFIG_COMPAT
+
+COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp,
+ struct compat_timespec __user *, rmtp)
+{
+ struct timespec64 tu64;
+ struct timespec tu;
+
+ if (compat_get_timespec(&tu, rqtp))
+ return -EFAULT;
+
+ tu64 = timespec_to_timespec64(tu);
+ if (!timespec64_valid(&tu64))
+ return -EINVAL;
+
+ current->restart_block.nanosleep.type = rmtp ? TT_COMPAT : TT_NONE;
+ current->restart_block.nanosleep.compat_rmtp = rmtp;
+ return hrtimer_nanosleep(&tu64, HRTIMER_MODE_REL, CLOCK_MONOTONIC);
}
+#endif
/*
* Functions related to boot-time initialization:
diff --git a/kernel/time/itimer.c b/kernel/time/itimer.c
index 087d6a1..2ef98a0 100644
--- a/kernel/time/itimer.c
+++ b/kernel/time/itimer.c
@@ -15,6 +15,7 @@
#include <linux/posix-timers.h>
#include <linux/hrtimer.h>
#include <trace/events/timer.h>
+#include <linux/compat.h>
#include <linux/uaccess.h>
@@ -116,6 +117,19 @@ SYSCALL_DEFINE2(getitimer, int, which, struct itimerval __user *, value)
return error;
}
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE2(getitimer, int, which,
+ struct compat_itimerval __user *, it)
+{
+ struct itimerval kit;
+ int error = do_getitimer(which, &kit);
+
+ if (!error && put_compat_itimerval(it, &kit))
+ error = -EFAULT;
+ return error;
+}
+#endif
+
/*
* The timer is automagically restarted, when interval != 0
@@ -138,8 +152,12 @@ static void set_cpu_itimer(struct task_struct *tsk, unsigned int clock_id,
u64 oval, nval, ointerval, ninterval;
struct cpu_itimer *it = &tsk->signal->it[clock_id];
- nval = timeval_to_ns(&value->it_value);
- ninterval = timeval_to_ns(&value->it_interval);
+ /*
+ * Use the to_ktime conversion because that clamps the maximum
+ * value to KTIME_MAX and avoid multiplication overflows.
+ */
+ nval = ktime_to_ns(timeval_to_ktime(value->it_value));
+ ninterval = ktime_to_ns(timeval_to_ktime(value->it_interval));
spin_lock_irq(&tsk->sighand->siglock);
@@ -294,3 +312,27 @@ SYSCALL_DEFINE3(setitimer, int, which, struct itimerval __user *, value,
return -EFAULT;
return 0;
}
+
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE3(setitimer, int, which,
+ struct compat_itimerval __user *, in,
+ struct compat_itimerval __user *, out)
+{
+ struct itimerval kin, kout;
+ int error;
+
+ if (in) {
+ if (get_compat_itimerval(&kin, in))
+ return -EFAULT;
+ } else {
+ memset(&kin, 0, sizeof(kin));
+ }
+
+ error = do_setitimer(which, &kin, out ? &kout : NULL);
+ if (error || !out)
+ return error;
+ if (put_compat_itimerval(out, &kout))
+ return -EFAULT;
+ return 0;
+}
+#endif
diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c
index 31d588d..17cdc55 100644
--- a/kernel/time/posix-clock.c
+++ b/kernel/time/posix-clock.c
@@ -25,6 +25,8 @@
#include <linux/syscalls.h>
#include <linux/uaccess.h>
+#include "posix-timers.h"
+
static void delete_clock(struct kref *kref);
/*
@@ -82,38 +84,6 @@ static unsigned int posix_clock_poll(struct file *fp, poll_table *wait)
return result;
}
-static int posix_clock_fasync(int fd, struct file *fp, int on)
-{
- struct posix_clock *clk = get_posix_clock(fp);
- int err = 0;
-
- if (!clk)
- return -ENODEV;
-
- if (clk->ops.fasync)
- err = clk->ops.fasync(clk, fd, fp, on);
-
- put_posix_clock(clk);
-
- return err;
-}
-
-static int posix_clock_mmap(struct file *fp, struct vm_area_struct *vma)
-{
- struct posix_clock *clk = get_posix_clock(fp);
- int err = -ENODEV;
-
- if (!clk)
- return -ENODEV;
-
- if (clk->ops.mmap)
- err = clk->ops.mmap(clk, vma);
-
- put_posix_clock(clk);
-
- return err;
-}
-
static long posix_clock_ioctl(struct file *fp,
unsigned int cmd, unsigned long arg)
{
@@ -199,8 +169,6 @@ static const struct file_operations posix_clock_file_operations = {
.unlocked_ioctl = posix_clock_ioctl,
.open = posix_clock_open,
.release = posix_clock_release,
- .fasync = posix_clock_fasync,
- .mmap = posix_clock_mmap,
#ifdef CONFIG_COMPAT
.compat_ioctl = posix_clock_compat_ioctl,
#endif
@@ -359,88 +327,9 @@ out:
return err;
}
-static int pc_timer_create(struct k_itimer *kit)
-{
- clockid_t id = kit->it_clock;
- struct posix_clock_desc cd;
- int err;
-
- err = get_clock_desc(id, &cd);
- if (err)
- return err;
-
- if (cd.clk->ops.timer_create)
- err = cd.clk->ops.timer_create(cd.clk, kit);
- else
- err = -EOPNOTSUPP;
-
- put_clock_desc(&cd);
-
- return err;
-}
-
-static int pc_timer_delete(struct k_itimer *kit)
-{
- clockid_t id = kit->it_clock;
- struct posix_clock_desc cd;
- int err;
-
- err = get_clock_desc(id, &cd);
- if (err)
- return err;
-
- if (cd.clk->ops.timer_delete)
- err = cd.clk->ops.timer_delete(cd.clk, kit);
- else
- err = -EOPNOTSUPP;
-
- put_clock_desc(&cd);
-
- return err;
-}
-
-static void pc_timer_gettime(struct k_itimer *kit, struct itimerspec64 *ts)
-{
- clockid_t id = kit->it_clock;
- struct posix_clock_desc cd;
-
- if (get_clock_desc(id, &cd))
- return;
-
- if (cd.clk->ops.timer_gettime)
- cd.clk->ops.timer_gettime(cd.clk, kit, ts);
-
- put_clock_desc(&cd);
-}
-
-static int pc_timer_settime(struct k_itimer *kit, int flags,
- struct itimerspec64 *ts, struct itimerspec64 *old)
-{
- clockid_t id = kit->it_clock;
- struct posix_clock_desc cd;
- int err;
-
- err = get_clock_desc(id, &cd);
- if (err)
- return err;
-
- if (cd.clk->ops.timer_settime)
- err = cd.clk->ops.timer_settime(cd.clk, kit, flags, ts, old);
- else
- err = -EOPNOTSUPP;
-
- put_clock_desc(&cd);
-
- return err;
-}
-
-struct k_clock clock_posix_dynamic = {
+const struct k_clock clock_posix_dynamic = {
.clock_getres = pc_clock_getres,
.clock_set = pc_clock_settime,
.clock_get = pc_clock_gettime,
.clock_adj = pc_clock_adjtime,
- .timer_create = pc_timer_create,
- .timer_set = pc_timer_settime,
- .timer_del = pc_timer_delete,
- .timer_get = pc_timer_gettime,
};
diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
index d2a1e6d..60cb24a 100644
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -12,6 +12,11 @@
#include <trace/events/timer.h>
#include <linux/tick.h>
#include <linux/workqueue.h>
+#include <linux/compat.h>
+
+#include "posix-timers.h"
+
+static void posix_cpu_timer_rearm(struct k_itimer *timer);
/*
* Called after updating RLIMIT_CPU to run cpu timer and update
@@ -322,6 +327,8 @@ static int posix_cpu_timer_create(struct k_itimer *new_timer)
if (CPUCLOCK_WHICH(new_timer->it_clock) >= CPUCLOCK_MAX)
return -EINVAL;
+ new_timer->kclock = &clock_posix_cpu;
+
INIT_LIST_HEAD(&new_timer->it.cpu.entry);
rcu_read_lock();
@@ -524,7 +531,8 @@ static void cpu_timer_fire(struct k_itimer *timer)
* reload the timer. But we need to keep it
* ticking in case the signal is deliverable next time.
*/
- posix_cpu_timer_schedule(timer);
+ posix_cpu_timer_rearm(timer);
+ ++timer->it_requeue_pending;
}
}
@@ -572,7 +580,11 @@ static int posix_cpu_timer_set(struct k_itimer *timer, int timer_flags,
WARN_ON_ONCE(p == NULL);
- new_expires = timespec64_to_ns(&new->it_value);
+ /*
+ * Use the to_ktime conversion because that clamps the maximum
+ * value to KTIME_MAX and avoid multiplication overflows.
+ */
+ new_expires = ktime_to_ns(timespec64_to_ktime(new->it_value));
/*
* Protect against sighand release/switch in exit/exec and p->cpu_timers
@@ -712,10 +724,8 @@ static void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec64 *itp
*/
itp->it_interval = ns_to_timespec64(timer->it.cpu.incr);
- if (timer->it.cpu.expires == 0) { /* Timer not armed at all. */
- itp->it_value.tv_sec = itp->it_value.tv_nsec = 0;
+ if (!timer->it.cpu.expires)
return;
- }
/*
* Sample the clock to take the difference with the expiry time.
@@ -739,7 +749,6 @@ static void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec64 *itp
* Call the timer disarmed, nothing else to do.
*/
timer->it.cpu.expires = 0;
- itp->it_value = ns_to_timespec64(timer->it.cpu.expires);
return;
} else {
cpu_timer_sample_group(timer->it_clock, p, &now);
@@ -976,10 +985,10 @@ static void check_process_timers(struct task_struct *tsk,
}
/*
- * This is called from the signal code (via do_schedule_next_timer)
+ * This is called from the signal code (via posixtimer_rearm)
* when the last timer signal was delivered and we have to reload the timer.
*/
-void posix_cpu_timer_schedule(struct k_itimer *timer)
+static void posix_cpu_timer_rearm(struct k_itimer *timer)
{
struct sighand_struct *sighand;
unsigned long flags;
@@ -995,12 +1004,12 @@ void posix_cpu_timer_schedule(struct k_itimer *timer)
cpu_clock_sample(timer->it_clock, p, &now);
bump_cpu_timer(timer, now);
if (unlikely(p->exit_state))
- goto out;
+ return;
/* Protect timer list r/w in arm_timer() */
sighand = lock_task_sighand(p, &flags);
if (!sighand)
- goto out;
+ return;
} else {
/*
* Protect arm_timer() and timer sampling in case of call to
@@ -1013,11 +1022,10 @@ void posix_cpu_timer_schedule(struct k_itimer *timer)
* We can't even collect a sample any more.
*/
timer->it.cpu.expires = 0;
- goto out;
+ return;
} else if (unlikely(p->exit_state) && thread_group_empty(p)) {
- unlock_task_sighand(p, &flags);
- /* Optimizations: if the process is dying, no need to rearm */
- goto out;
+ /* If the process is dying, no need to rearm */
+ goto unlock;
}
cpu_timer_sample_group(timer->it_clock, p, &now);
bump_cpu_timer(timer, now);
@@ -1029,12 +1037,8 @@ void posix_cpu_timer_schedule(struct k_itimer *timer)
*/
WARN_ON_ONCE(!irqs_disabled());
arm_timer(timer);
+unlock:
unlock_task_sighand(p, &flags);
-
-out:
- timer->it_overrun_last = timer->it_overrun;
- timer->it_overrun = -1;
- ++timer->it_requeue_pending;
}
/**
@@ -1227,9 +1231,11 @@ void set_process_cpu_timer(struct task_struct *tsk, unsigned int clock_idx,
}
static int do_cpu_nanosleep(const clockid_t which_clock, int flags,
- struct timespec64 *rqtp, struct itimerspec64 *it)
+ const struct timespec64 *rqtp)
{
+ struct itimerspec64 it;
struct k_itimer timer;
+ u64 expires;
int error;
/*
@@ -1243,12 +1249,13 @@ static int do_cpu_nanosleep(const clockid_t which_clock, int flags,
timer.it_process = current;
if (!error) {
static struct itimerspec64 zero_it;
+ struct restart_block *restart;
- memset(it, 0, sizeof *it);
- it->it_value = *rqtp;
+ memset(&it, 0, sizeof(it));
+ it.it_value = *rqtp;
spin_lock_irq(&timer.it_lock);
- error = posix_cpu_timer_set(&timer, flags, it, NULL);
+ error = posix_cpu_timer_set(&timer, flags, &it, NULL);
if (error) {
spin_unlock_irq(&timer.it_lock);
return error;
@@ -1277,8 +1284,8 @@ static int do_cpu_nanosleep(const clockid_t which_clock, int flags,
/*
* We were interrupted by a signal.
*/
- *rqtp = ns_to_timespec64(timer.it.cpu.expires);
- error = posix_cpu_timer_set(&timer, 0, &zero_it, it);
+ expires = timer.it.cpu.expires;
+ error = posix_cpu_timer_set(&timer, 0, &zero_it, &it);
if (!error) {
/*
* Timer is now unarmed, deletion can not fail.
@@ -1298,7 +1305,7 @@ static int do_cpu_nanosleep(const clockid_t which_clock, int flags,
spin_unlock_irq(&timer.it_lock);
}
- if ((it->it_value.tv_sec | it->it_value.tv_nsec) == 0) {
+ if ((it.it_value.tv_sec | it.it_value.tv_nsec) == 0) {
/*
* It actually did fire already.
*/
@@ -1306,6 +1313,17 @@ static int do_cpu_nanosleep(const clockid_t which_clock, int flags,
}
error = -ERESTART_RESTARTBLOCK;
+ /*
+ * Report back to the user the time still remaining.
+ */
+ restart = &current->restart_block;
+ restart->nanosleep.expires = expires;
+ if (restart->nanosleep.type != TT_NONE) {
+ struct timespec ts;
+
+ ts = timespec64_to_timespec(it.it_value);
+ error = nanosleep_copyout(restart, &ts);
+ }
}
return error;
@@ -1314,11 +1332,9 @@ static int do_cpu_nanosleep(const clockid_t which_clock, int flags,
static long posix_cpu_nsleep_restart(struct restart_block *restart_block);
static int posix_cpu_nsleep(const clockid_t which_clock, int flags,
- struct timespec64 *rqtp, struct timespec __user *rmtp)
+ const struct timespec64 *rqtp)
{
struct restart_block *restart_block = &current->restart_block;
- struct itimerspec64 it;
- struct timespec ts;
int error;
/*
@@ -1329,23 +1345,15 @@ static int posix_cpu_nsleep(const clockid_t which_clock, int flags,
CPUCLOCK_PID(which_clock) == task_pid_vnr(current)))
return -EINVAL;
- error = do_cpu_nanosleep(which_clock, flags, rqtp, &it);
+ error = do_cpu_nanosleep(which_clock, flags, rqtp);
if (error == -ERESTART_RESTARTBLOCK) {
if (flags & TIMER_ABSTIME)
return -ERESTARTNOHAND;
- /*
- * Report back to the user the time still remaining.
- */
- ts = timespec64_to_timespec(it.it_value);
- if (rmtp && copy_to_user(rmtp, &ts, sizeof(*rmtp)))
- return -EFAULT;
restart_block->fn = posix_cpu_nsleep_restart;
restart_block->nanosleep.clockid = which_clock;
- restart_block->nanosleep.rmtp = rmtp;
- restart_block->nanosleep.expires = timespec64_to_ns(rqtp);
}
return error;
}
@@ -1353,28 +1361,11 @@ static int posix_cpu_nsleep(const clockid_t which_clock, int flags,
static long posix_cpu_nsleep_restart(struct restart_block *restart_block)
{
clockid_t which_clock = restart_block->nanosleep.clockid;
- struct itimerspec64 it;
struct timespec64 t;
- struct timespec tmp;
- int error;
t = ns_to_timespec64(restart_block->nanosleep.expires);
- error = do_cpu_nanosleep(which_clock, TIMER_ABSTIME, &t, &it);
-
- if (error == -ERESTART_RESTARTBLOCK) {
- struct timespec __user *rmtp = restart_block->nanosleep.rmtp;
- /*
- * Report back to the user the time still remaining.
- */
- tmp = timespec64_to_timespec(it.it_value);
- if (rmtp && copy_to_user(rmtp, &tmp, sizeof(*rmtp)))
- return -EFAULT;
-
- restart_block->nanosleep.expires = timespec64_to_ns(&t);
- }
- return error;
-
+ return do_cpu_nanosleep(which_clock, TIMER_ABSTIME, &t);
}
#define PROCESS_CLOCK MAKE_PROCESS_CPUCLOCK(0, CPUCLOCK_SCHED)
@@ -1396,14 +1387,9 @@ static int process_cpu_timer_create(struct k_itimer *timer)
return posix_cpu_timer_create(timer);
}
static int process_cpu_nsleep(const clockid_t which_clock, int flags,
- struct timespec64 *rqtp,
- struct timespec __user *rmtp)
-{
- return posix_cpu_nsleep(PROCESS_CLOCK, flags, rqtp, rmtp);
-}
-static long process_cpu_nsleep_restart(struct restart_block *restart_block)
+ const struct timespec64 *rqtp)
{
- return -EINVAL;
+ return posix_cpu_nsleep(PROCESS_CLOCK, flags, rqtp);
}
static int thread_cpu_clock_getres(const clockid_t which_clock,
struct timespec64 *tp)
@@ -1421,36 +1407,27 @@ static int thread_cpu_timer_create(struct k_itimer *timer)
return posix_cpu_timer_create(timer);
}
-struct k_clock clock_posix_cpu = {
+const struct k_clock clock_posix_cpu = {
.clock_getres = posix_cpu_clock_getres,
.clock_set = posix_cpu_clock_set,
.clock_get = posix_cpu_clock_get,
.timer_create = posix_cpu_timer_create,
.nsleep = posix_cpu_nsleep,
- .nsleep_restart = posix_cpu_nsleep_restart,
.timer_set = posix_cpu_timer_set,
.timer_del = posix_cpu_timer_del,
.timer_get = posix_cpu_timer_get,
+ .timer_rearm = posix_cpu_timer_rearm,
};
-static __init int init_posix_cpu_timers(void)
-{
- struct k_clock process = {
- .clock_getres = process_cpu_clock_getres,
- .clock_get = process_cpu_clock_get,
- .timer_create = process_cpu_timer_create,
- .nsleep = process_cpu_nsleep,
- .nsleep_restart = process_cpu_nsleep_restart,
- };
- struct k_clock thread = {
- .clock_getres = thread_cpu_clock_getres,
- .clock_get = thread_cpu_clock_get,
- .timer_create = thread_cpu_timer_create,
- };
-
- posix_timers_register_clock(CLOCK_PROCESS_CPUTIME_ID, &process);
- posix_timers_register_clock(CLOCK_THREAD_CPUTIME_ID, &thread);
+const struct k_clock clock_process = {
+ .clock_getres = process_cpu_clock_getres,
+ .clock_get = process_cpu_clock_get,
+ .timer_create = process_cpu_timer_create,
+ .nsleep = process_cpu_nsleep,
+};
- return 0;
-}
-__initcall(init_posix_cpu_timers);
+const struct k_clock clock_thread = {
+ .clock_getres = thread_cpu_clock_getres,
+ .clock_get = thread_cpu_clock_get,
+ .timer_create = thread_cpu_timer_create,
+};
diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c
index c0cd53e..38f3b20 100644
--- a/kernel/time/posix-stubs.c
+++ b/kernel/time/posix-stubs.c
@@ -17,6 +17,7 @@
#include <linux/ktime.h>
#include <linux/timekeeping.h>
#include <linux/posix-timers.h>
+#include <linux/compat.h>
asmlinkage long sys_ni_posix_timers(void)
{
@@ -27,6 +28,7 @@ asmlinkage long sys_ni_posix_timers(void)
}
#define SYS_NI(name) SYSCALL_ALIAS(sys_##name, sys_ni_posix_timers)
+#define COMPAT_SYS_NI(name) SYSCALL_ALIAS(compat_sys_##name, sys_ni_posix_timers)
SYS_NI(timer_create);
SYS_NI(timer_gettime);
@@ -39,6 +41,12 @@ SYS_NI(setitimer);
#ifdef __ARCH_WANT_SYS_ALARM
SYS_NI(alarm);
#endif
+COMPAT_SYS_NI(timer_create);
+COMPAT_SYS_NI(clock_adjtime);
+COMPAT_SYS_NI(timer_settime);
+COMPAT_SYS_NI(timer_gettime);
+COMPAT_SYS_NI(getitimer);
+COMPAT_SYS_NI(setitimer);
/*
* We preserve minimal support for CLOCK_REALTIME and CLOCK_MONOTONIC
@@ -110,22 +118,106 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
case CLOCK_REALTIME:
case CLOCK_MONOTONIC:
case CLOCK_BOOTTIME:
- if (copy_from_user(&t, rqtp, sizeof (struct timespec)))
- return -EFAULT;
- t64 = timespec_to_timespec64(t);
- if (!timespec64_valid(&t64))
- return -EINVAL;
- return hrtimer_nanosleep(&t64, rmtp, flags & TIMER_ABSTIME ?
- HRTIMER_MODE_ABS : HRTIMER_MODE_REL,
- which_clock);
+ break;
default:
return -EINVAL;
}
+
+ if (copy_from_user(&t, rqtp, sizeof (struct timespec)))
+ return -EFAULT;
+ t64 = timespec_to_timespec64(t);
+ if (!timespec64_valid(&t64))
+ return -EINVAL;
+ if (flags & TIMER_ABSTIME)
+ rmtp = NULL;
+ current->restart_block.nanosleep.type = rmtp ? TT_NATIVE : TT_NONE;
+ current->restart_block.nanosleep.rmtp = rmtp;
+ return hrtimer_nanosleep(&t64, flags & TIMER_ABSTIME ?
+ HRTIMER_MODE_ABS : HRTIMER_MODE_REL,
+ which_clock);
}
#ifdef CONFIG_COMPAT
-long clock_nanosleep_restart(struct restart_block *restart_block)
+COMPAT_SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
+ struct compat_timespec __user *, tp)
+{
+ struct timespec64 new_tp64;
+ struct timespec new_tp;
+
+ if (which_clock != CLOCK_REALTIME)
+ return -EINVAL;
+ if (compat_get_timespec(&new_tp, tp))
+ return -EFAULT;
+
+ new_tp64 = timespec_to_timespec64(new_tp);
+ return do_sys_settimeofday64(&new_tp64, NULL);
+}
+
+COMPAT_SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
+ struct compat_timespec __user *,tp)
{
- return hrtimer_nanosleep_restart(restart_block);
+ struct timespec64 kernel_tp64;
+ struct timespec kernel_tp;
+
+ switch (which_clock) {
+ case CLOCK_REALTIME: ktime_get_real_ts64(&kernel_tp64); break;
+ case CLOCK_MONOTONIC: ktime_get_ts64(&kernel_tp64); break;
+ case CLOCK_BOOTTIME: get_monotonic_boottime64(&kernel_tp64); break;
+ default: return -EINVAL;
+ }
+
+ kernel_tp = timespec64_to_timespec(kernel_tp64);
+ if (compat_put_timespec(&kernel_tp, tp))
+ return -EFAULT;
+ return 0;
+}
+
+COMPAT_SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock,
+ struct compat_timespec __user *, tp)
+{
+ struct timespec rtn_tp = {
+ .tv_sec = 0,
+ .tv_nsec = hrtimer_resolution,
+ };
+
+ switch (which_clock) {
+ case CLOCK_REALTIME:
+ case CLOCK_MONOTONIC:
+ case CLOCK_BOOTTIME:
+ if (compat_put_timespec(&rtn_tp, tp))
+ return -EFAULT;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags,
+ struct compat_timespec __user *, rqtp,
+ struct compat_timespec __user *, rmtp)
+{
+ struct timespec64 t64;
+ struct timespec t;
+
+ switch (which_clock) {
+ case CLOCK_REALTIME:
+ case CLOCK_MONOTONIC:
+ case CLOCK_BOOTTIME:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (compat_get_timespec(&t, rqtp))
+ return -EFAULT;
+ t64 = timespec_to_timespec64(t);
+ if (!timespec64_valid(&t64))
+ return -EINVAL;
+ if (flags & TIMER_ABSTIME)
+ rmtp = NULL;
+ current->restart_block.nanosleep.type = rmtp ? TT_COMPAT : TT_NONE;
+ current->restart_block.nanosleep.compat_rmtp = rmtp;
+ return hrtimer_nanosleep(&t64, flags & TIMER_ABSTIME ?
+ HRTIMER_MODE_ABS : HRTIMER_MODE_REL,
+ which_clock);
}
#endif
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 4d7b2ce..82d67be 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -49,8 +49,10 @@
#include <linux/workqueue.h>
#include <linux/export.h>
#include <linux/hashtable.h>
+#include <linux/compat.h>
#include "timekeeping.h"
+#include "posix-timers.h"
/*
* Management arrays for POSIX timers. Timers are now kept in static hash table
@@ -69,6 +71,10 @@ static struct kmem_cache *posix_timers_cache;
static DEFINE_HASHTABLE(posix_timers_hashtable, 9);
static DEFINE_SPINLOCK(hash_lock);
+static const struct k_clock * const posix_clocks[];
+static const struct k_clock *clockid_to_kclock(const clockid_t id);
+static const struct k_clock clock_realtime, clock_monotonic;
+
/*
* we assume that the new SIGEV_THREAD_ID shares no bits with the other
* SIGEV values. Here we put out an error if this assumption fails.
@@ -124,22 +130,6 @@ static DEFINE_SPINLOCK(hash_lock);
* have is CLOCK_REALTIME and its high res counter part, both of
* which we beg off on and pass to do_sys_settimeofday().
*/
-
-static struct k_clock posix_clocks[MAX_CLOCKS];
-
-/*
- * These ones are defined below.
- */
-static int common_nsleep(const clockid_t, int flags, struct timespec64 *t,
- struct timespec __user *rmtp);
-static int common_timer_create(struct k_itimer *new_timer);
-static void common_timer_get(struct k_itimer *, struct itimerspec64 *);
-static int common_timer_set(struct k_itimer *, int,
- struct itimerspec64 *, struct itimerspec64 *);
-static int common_timer_del(struct k_itimer *timer);
-
-static enum hrtimer_restart posix_timer_fn(struct hrtimer *data);
-
static struct k_itimer *__lock_timer(timer_t timer_id, unsigned long *flags);
#define lock_timer(tid, flags) \
@@ -285,91 +275,23 @@ static int posix_get_hrtimer_res(clockid_t which_clock, struct timespec64 *tp)
*/
static __init int init_posix_timers(void)
{
- struct k_clock clock_realtime = {
- .clock_getres = posix_get_hrtimer_res,
- .clock_get = posix_clock_realtime_get,
- .clock_set = posix_clock_realtime_set,
- .clock_adj = posix_clock_realtime_adj,
- .nsleep = common_nsleep,
- .nsleep_restart = hrtimer_nanosleep_restart,
- .timer_create = common_timer_create,
- .timer_set = common_timer_set,
- .timer_get = common_timer_get,
- .timer_del = common_timer_del,
- };
- struct k_clock clock_monotonic = {
- .clock_getres = posix_get_hrtimer_res,
- .clock_get = posix_ktime_get_ts,
- .nsleep = common_nsleep,
- .nsleep_restart = hrtimer_nanosleep_restart,
- .timer_create = common_timer_create,
- .timer_set = common_timer_set,
- .timer_get = common_timer_get,
- .timer_del = common_timer_del,
- };
- struct k_clock clock_monotonic_raw = {
- .clock_getres = posix_get_hrtimer_res,
- .clock_get = posix_get_monotonic_raw,
- };
- struct k_clock clock_realtime_coarse = {
- .clock_getres = posix_get_coarse_res,
- .clock_get = posix_get_realtime_coarse,
- };
- struct k_clock clock_monotonic_coarse = {
- .clock_getres = posix_get_coarse_res,
- .clock_get = posix_get_monotonic_coarse,
- };
- struct k_clock clock_tai = {
- .clock_getres = posix_get_hrtimer_res,
- .clock_get = posix_get_tai,
- .nsleep = common_nsleep,
- .nsleep_restart = hrtimer_nanosleep_restart,
- .timer_create = common_timer_create,
- .timer_set = common_timer_set,
- .timer_get = common_timer_get,
- .timer_del = common_timer_del,
- };
- struct k_clock clock_boottime = {
- .clock_getres = posix_get_hrtimer_res,
- .clock_get = posix_get_boottime,
- .nsleep = common_nsleep,
- .nsleep_restart = hrtimer_nanosleep_restart,
- .timer_create = common_timer_create,
- .timer_set = common_timer_set,
- .timer_get = common_timer_get,
- .timer_del = common_timer_del,
- };
-
- posix_timers_register_clock(CLOCK_REALTIME, &clock_realtime);
- posix_timers_register_clock(CLOCK_MONOTONIC, &clock_monotonic);
- posix_timers_register_clock(CLOCK_MONOTONIC_RAW, &clock_monotonic_raw);
- posix_timers_register_clock(CLOCK_REALTIME_COARSE, &clock_realtime_coarse);
- posix_timers_register_clock(CLOCK_MONOTONIC_COARSE, &clock_monotonic_coarse);
- posix_timers_register_clock(CLOCK_BOOTTIME, &clock_boottime);
- posix_timers_register_clock(CLOCK_TAI, &clock_tai);
-
posix_timers_cache = kmem_cache_create("posix_timers_cache",
sizeof (struct k_itimer), 0, SLAB_PANIC,
NULL);
return 0;
}
-
__initcall(init_posix_timers);
-static void schedule_next_timer(struct k_itimer *timr)
+static void common_hrtimer_rearm(struct k_itimer *timr)
{
struct hrtimer *timer = &timr->it.real.timer;
- if (timr->it.real.interval == 0)
+ if (!timr->it_interval)
return;
timr->it_overrun += (unsigned int) hrtimer_forward(timer,
timer->base->get_time(),
- timr->it.real.interval);
-
- timr->it_overrun_last = timr->it_overrun;
- timr->it_overrun = -1;
- ++timr->it_requeue_pending;
+ timr->it_interval);
hrtimer_restart(timer);
}
@@ -384,24 +306,27 @@ static void schedule_next_timer(struct k_itimer *timr)
* To protect against the timer going away while the interrupt is queued,
* we require that the it_requeue_pending flag be set.
*/
-void do_schedule_next_timer(struct siginfo *info)
+void posixtimer_rearm(struct siginfo *info)
{
struct k_itimer *timr;
unsigned long flags;
timr = lock_timer(info->si_tid, &flags);
+ if (!timr)
+ return;
- if (timr && timr->it_requeue_pending == info->si_sys_private) {
- if (timr->it_clock < 0)
- posix_cpu_timer_schedule(timr);
- else
- schedule_next_timer(timr);
+ if (timr->it_requeue_pending == info->si_sys_private) {
+ timr->kclock->timer_rearm(timr);
+
+ timr->it_active = 1;
+ timr->it_overrun_last = timr->it_overrun;
+ timr->it_overrun = -1;
+ ++timr->it_requeue_pending;
info->si_overrun += timr->it_overrun_last;
}
- if (timr)
- unlock_timer(timr, flags);
+ unlock_timer(timr, flags);
}
int posix_timer_event(struct k_itimer *timr, int si_private)
@@ -410,12 +335,12 @@ int posix_timer_event(struct k_itimer *timr, int si_private)
int shared, ret = -1;
/*
* FIXME: if ->sigq is queued we can race with
- * dequeue_signal()->do_schedule_next_timer().
+ * dequeue_signal()->posixtimer_rearm().
*
* If dequeue_signal() sees the "right" value of
- * si_sys_private it calls do_schedule_next_timer().
+ * si_sys_private it calls posixtimer_rearm().
* We re-queue ->sigq and drop ->it_lock().
- * do_schedule_next_timer() locks the timer
+ * posixtimer_rearm() locks the timer
* and re-schedules it while ->sigq is pending.
* Not really bad, but not that we want.
*/
@@ -431,7 +356,6 @@ int posix_timer_event(struct k_itimer *timr, int si_private)
/* If we failed to send the signal the timer stops. */
return ret > 0;
}
-EXPORT_SYMBOL_GPL(posix_timer_event);
/*
* This function gets called when a POSIX.1b interval timer expires. It
@@ -450,7 +374,8 @@ static enum hrtimer_restart posix_timer_fn(struct hrtimer *timer)
timr = container_of(timer, struct k_itimer, it.real.timer);
spin_lock_irqsave(&timr->it_lock, flags);
- if (timr->it.real.interval != 0)
+ timr->it_active = 0;
+ if (timr->it_interval != 0)
si_private = ++timr->it_requeue_pending;
if (posix_timer_event(timr, si_private)) {
@@ -459,7 +384,7 @@ static enum hrtimer_restart posix_timer_fn(struct hrtimer *timer)
* we will not get a call back to restart it AND
* it should be restarted.
*/
- if (timr->it.real.interval != 0) {
+ if (timr->it_interval != 0) {
ktime_t now = hrtimer_cb_get_time(timer);
/*
@@ -488,15 +413,16 @@ static enum hrtimer_restart posix_timer_fn(struct hrtimer *timer)
{
ktime_t kj = NSEC_PER_SEC / HZ;
- if (timr->it.real.interval < kj)
+ if (timr->it_interval < kj)
now = ktime_add(now, kj);
}
#endif
timr->it_overrun += (unsigned int)
hrtimer_forward(timer, now,
- timr->it.real.interval);
+ timr->it_interval);
ret = HRTIMER_RESTART;
++timr->it_requeue_pending;
+ timr->it_active = 1;
}
}
@@ -521,30 +447,6 @@ static struct pid *good_sigevent(sigevent_t * event)
return task_pid(rtn);
}
-void posix_timers_register_clock(const clockid_t clock_id,
- struct k_clock *new_clock)
-{
- if ((unsigned) clock_id >= MAX_CLOCKS) {
- printk(KERN_WARNING "POSIX clock register failed for clock_id %d\n",
- clock_id);
- return;
- }
-
- if (!new_clock->clock_get) {
- printk(KERN_WARNING "POSIX clock id %d lacks clock_get()\n",
- clock_id);
- return;
- }
- if (!new_clock->clock_getres) {
- printk(KERN_WARNING "POSIX clock id %d lacks clock_getres()\n",
- clock_id);
- return;
- }
-
- posix_clocks[clock_id] = *new_clock;
-}
-EXPORT_SYMBOL_GPL(posix_timers_register_clock);
-
static struct k_itimer * alloc_posix_timer(void)
{
struct k_itimer *tmr;
@@ -581,17 +483,6 @@ static void release_posix_timer(struct k_itimer *tmr, int it_id_set)
call_rcu(&tmr->it.rcu, k_itimer_rcu_free);
}
-static struct k_clock *clockid_to_kclock(const clockid_t id)
-{
- if (id < 0)
- return (id & CLOCKFD_MASK) == CLOCKFD ?
- &clock_posix_dynamic : &clock_posix_cpu;
-
- if (id >= MAX_CLOCKS || !posix_clocks[id].clock_getres)
- return NULL;
- return &posix_clocks[id];
-}
-
static int common_timer_create(struct k_itimer *new_timer)
{
hrtimer_init(&new_timer->it.real.timer, new_timer->it_clock, 0);
@@ -599,15 +490,12 @@ static int common_timer_create(struct k_itimer *new_timer)
}
/* Create a POSIX.1b interval timer. */
-
-SYSCALL_DEFINE3(timer_create, const clockid_t, which_clock,
- struct sigevent __user *, timer_event_spec,
- timer_t __user *, created_timer_id)
+static int do_timer_create(clockid_t which_clock, struct sigevent *event,
+ timer_t __user *created_timer_id)
{
- struct k_clock *kc = clockid_to_kclock(which_clock);
+ const struct k_clock *kc = clockid_to_kclock(which_clock);
struct k_itimer *new_timer;
int error, new_timer_id;
- sigevent_t event;
int it_id_set = IT_ID_NOT_SET;
if (!kc)
@@ -629,31 +517,28 @@ SYSCALL_DEFINE3(timer_create, const clockid_t, which_clock,
it_id_set = IT_ID_SET;
new_timer->it_id = (timer_t) new_timer_id;
new_timer->it_clock = which_clock;
+ new_timer->kclock = kc;
new_timer->it_overrun = -1;
- if (timer_event_spec) {
- if (copy_from_user(&event, timer_event_spec, sizeof (event))) {
- error = -EFAULT;
- goto out;
- }
+ if (event) {
rcu_read_lock();
- new_timer->it_pid = get_pid(good_sigevent(&event));
+ new_timer->it_pid = get_pid(good_sigevent(event));
rcu_read_unlock();
if (!new_timer->it_pid) {
error = -EINVAL;
goto out;
}
+ new_timer->it_sigev_notify = event->sigev_notify;
+ new_timer->sigq->info.si_signo = event->sigev_signo;
+ new_timer->sigq->info.si_value = event->sigev_value;
} else {
- memset(&event.sigev_value, 0, sizeof(event.sigev_value));
- event.sigev_notify = SIGEV_SIGNAL;
- event.sigev_signo = SIGALRM;
- event.sigev_value.sival_int = new_timer->it_id;
+ new_timer->it_sigev_notify = SIGEV_SIGNAL;
+ new_timer->sigq->info.si_signo = SIGALRM;
+ memset(&new_timer->sigq->info.si_value, 0, sizeof(sigval_t));
+ new_timer->sigq->info.si_value.sival_int = new_timer->it_id;
new_timer->it_pid = get_pid(task_tgid(current));
}
- new_timer->it_sigev_notify = event.sigev_notify;
- new_timer->sigq->info.si_signo = event.sigev_signo;
- new_timer->sigq->info.si_value = event.sigev_value;
new_timer->sigq->info.si_tid = new_timer->it_id;
new_timer->sigq->info.si_code = SI_TIMER;
@@ -684,6 +569,36 @@ out:
return error;
}
+SYSCALL_DEFINE3(timer_create, const clockid_t, which_clock,
+ struct sigevent __user *, timer_event_spec,
+ timer_t __user *, created_timer_id)
+{
+ if (timer_event_spec) {
+ sigevent_t event;
+
+ if (copy_from_user(&event, timer_event_spec, sizeof (event)))
+ return -EFAULT;
+ return do_timer_create(which_clock, &event, created_timer_id);
+ }
+ return do_timer_create(which_clock, NULL, created_timer_id);
+}
+
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE3(timer_create, clockid_t, which_clock,
+ struct compat_sigevent __user *, timer_event_spec,
+ timer_t __user *, created_timer_id)
+{
+ if (timer_event_spec) {
+ sigevent_t event;
+
+ if (get_compat_sigevent(&event, timer_event_spec))
+ return -EFAULT;
+ return do_timer_create(which_clock, &event, created_timer_id);
+ }
+ return do_timer_create(which_clock, NULL, created_timer_id);
+}
+#endif
+
/*
* Locking issues: We need to protect the result of the id look up until
* we get the timer locked down so it is not deleted under us. The
@@ -717,6 +632,20 @@ static struct k_itimer *__lock_timer(timer_t timer_id, unsigned long *flags)
return NULL;
}
+static ktime_t common_hrtimer_remaining(struct k_itimer *timr, ktime_t now)
+{
+ struct hrtimer *timer = &timr->it.real.timer;
+
+ return __hrtimer_expires_remaining_adjusted(timer, now);
+}
+
+static int common_hrtimer_forward(struct k_itimer *timr, ktime_t now)
+{
+ struct hrtimer *timer = &timr->it.real.timer;
+
+ return (int)hrtimer_forward(timer, now, timr->it_interval);
+}
+
/*
* Get the time remaining on a POSIX.1b interval timer. This function
* is ALWAYS called with spin_lock_irq on the timer, thus it must not
@@ -733,55 +662,61 @@ static struct k_itimer *__lock_timer(timer_t timer_id, unsigned long *flags)
* it is the same as a requeue pending timer WRT to what we should
* report.
*/
-static void
-common_timer_get(struct k_itimer *timr, struct itimerspec64 *cur_setting)
+void common_timer_get(struct k_itimer *timr, struct itimerspec64 *cur_setting)
{
+ const struct k_clock *kc = timr->kclock;
ktime_t now, remaining, iv;
- struct hrtimer *timer = &timr->it.real.timer;
+ struct timespec64 ts64;
+ bool sig_none;
- memset(cur_setting, 0, sizeof(*cur_setting));
-
- iv = timr->it.real.interval;
+ sig_none = (timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE;
+ iv = timr->it_interval;
/* interval timer ? */
- if (iv)
+ if (iv) {
cur_setting->it_interval = ktime_to_timespec64(iv);
- else if (!hrtimer_active(timer) &&
- (timr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE)
- return;
+ } else if (!timr->it_active) {
+ /*
+ * SIGEV_NONE oneshot timers are never queued. Check them
+ * below.
+ */
+ if (!sig_none)
+ return;
+ }
- now = timer->base->get_time();
+ /*
+ * The timespec64 based conversion is suboptimal, but it's not
+ * worth to implement yet another callback.
+ */
+ kc->clock_get(timr->it_clock, &ts64);
+ now = timespec64_to_ktime(ts64);
/*
- * When a requeue is pending or this is a SIGEV_NONE
- * timer move the expiry time forward by intervals, so
- * expiry is > now.
+ * When a requeue is pending or this is a SIGEV_NONE timer move the
+ * expiry time forward by intervals, so expiry is > now.
*/
- if (iv && (timr->it_requeue_pending & REQUEUE_PENDING ||
- (timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE))
- timr->it_overrun += (unsigned int) hrtimer_forward(timer, now, iv);
+ if (iv && (timr->it_requeue_pending & REQUEUE_PENDING || sig_none))
+ timr->it_overrun += kc->timer_forward(timr, now);
- remaining = __hrtimer_expires_remaining_adjusted(timer, now);
+ remaining = kc->timer_remaining(timr, now);
/* Return 0 only, when the timer is expired and not pending */
if (remaining <= 0) {
/*
* A single shot SIGEV_NONE timer must return 0, when
* it is expired !
*/
- if ((timr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE)
+ if (!sig_none)
cur_setting->it_value.tv_nsec = 1;
- } else
+ } else {
cur_setting->it_value = ktime_to_timespec64(remaining);
+ }
}
/* Get the time remaining on a POSIX.1b interval timer. */
-SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
- struct itimerspec __user *, setting)
+static int do_timer_gettime(timer_t timer_id, struct itimerspec64 *setting)
{
- struct itimerspec64 cur_setting64;
- struct itimerspec cur_setting;
struct k_itimer *timr;
- struct k_clock *kc;
+ const struct k_clock *kc;
unsigned long flags;
int ret = 0;
@@ -789,20 +724,49 @@ SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
if (!timr)
return -EINVAL;
- kc = clockid_to_kclock(timr->it_clock);
+ memset(setting, 0, sizeof(*setting));
+ kc = timr->kclock;
if (WARN_ON_ONCE(!kc || !kc->timer_get))
ret = -EINVAL;
else
- kc->timer_get(timr, &cur_setting64);
+ kc->timer_get(timr, setting);
unlock_timer(timr, flags);
+ return ret;
+}
- cur_setting = itimerspec64_to_itimerspec(&cur_setting64);
- if (!ret && copy_to_user(setting, &cur_setting, sizeof (cur_setting)))
- return -EFAULT;
+/* Get the time remaining on a POSIX.1b interval timer. */
+SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
+ struct itimerspec __user *, setting)
+{
+ struct itimerspec64 cur_setting64;
+ int ret = do_timer_gettime(timer_id, &cur_setting64);
+ if (!ret) {
+ struct itimerspec cur_setting;
+ cur_setting = itimerspec64_to_itimerspec(&cur_setting64);
+ if (copy_to_user(setting, &cur_setting, sizeof (cur_setting)))
+ ret = -EFAULT;
+ }
+ return ret;
+}
+
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
+ struct compat_itimerspec __user *, setting)
+{
+ struct itimerspec64 cur_setting64;
+
+ int ret = do_timer_gettime(timer_id, &cur_setting64);
+ if (!ret) {
+ struct itimerspec cur_setting;
+ cur_setting = itimerspec64_to_itimerspec(&cur_setting64);
+ if (put_compat_itimerspec(setting, &cur_setting))
+ ret = -EFAULT;
+ }
return ret;
}
+#endif
/*
* Get the number of overruns of a POSIX.1b interval timer. This is to
@@ -810,7 +774,7 @@ SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
* accumulating overruns on the next timer. The overrun is frozen when
* the signal is delivered, either at the notify time (if the info block
* is not queued) or at the actual delivery time (as we are informed by
- * the call back to do_schedule_next_timer(). So all we need to do is
+ * the call back to posixtimer_rearm(). So all we need to do is
* to pick up the frozen overrun.
*/
SYSCALL_DEFINE1(timer_getoverrun, timer_t, timer_id)
@@ -829,117 +793,183 @@ SYSCALL_DEFINE1(timer_getoverrun, timer_t, timer_id)
return overrun;
}
-/* Set a POSIX.1b interval timer. */
-/* timr->it_lock is taken. */
-static int
-common_timer_set(struct k_itimer *timr, int flags,
- struct itimerspec64 *new_setting, struct itimerspec64 *old_setting)
+static void common_hrtimer_arm(struct k_itimer *timr, ktime_t expires,
+ bool absolute, bool sigev_none)
{
struct hrtimer *timer = &timr->it.real.timer;
enum hrtimer_mode mode;
+ mode = absolute ? HRTIMER_MODE_ABS : HRTIMER_MODE_REL;
+ /*
+ * Posix magic: Relative CLOCK_REALTIME timers are not affected by
+ * clock modifications, so they become CLOCK_MONOTONIC based under the
+ * hood. See hrtimer_init(). Update timr->kclock, so the generic
+ * functions which use timr->kclock->clock_get() work.
+ *
+ * Note: it_clock stays unmodified, because the next timer_set() might
+ * use ABSTIME, so it needs to switch back.
+ */
+ if (timr->it_clock == CLOCK_REALTIME)
+ timr->kclock = absolute ? &clock_realtime : &clock_monotonic;
+
+ hrtimer_init(&timr->it.real.timer, timr->it_clock, mode);
+ timr->it.real.timer.function = posix_timer_fn;
+
+ if (!absolute)
+ expires = ktime_add_safe(expires, timer->base->get_time());
+ hrtimer_set_expires(timer, expires);
+
+ if (!sigev_none)
+ hrtimer_start_expires(timer, HRTIMER_MODE_ABS);
+}
+
+static int common_hrtimer_try_to_cancel(struct k_itimer *timr)
+{
+ return hrtimer_try_to_cancel(&timr->it.real.timer);
+}
+
+/* Set a POSIX.1b interval timer. */
+int common_timer_set(struct k_itimer *timr, int flags,
+ struct itimerspec64 *new_setting,
+ struct itimerspec64 *old_setting)
+{
+ const struct k_clock *kc = timr->kclock;
+ bool sigev_none;
+ ktime_t expires;
+
if (old_setting)
common_timer_get(timr, old_setting);
- /* disable the timer */
- timr->it.real.interval = 0;
+ /* Prevent rearming by clearing the interval */
+ timr->it_interval = 0;
/*
- * careful here. If smp we could be in the "fire" routine which will
- * be spinning as we hold the lock. But this is ONLY an SMP issue.
+ * Careful here. On SMP systems the timer expiry function could be
+ * active and spinning on timr->it_lock.
*/
- if (hrtimer_try_to_cancel(timer) < 0)
+ if (kc->timer_try_to_cancel(timr) < 0)
return TIMER_RETRY;
- timr->it_requeue_pending = (timr->it_requeue_pending + 2) &
+ timr->it_active = 0;
+ timr->it_requeue_pending = (timr->it_requeue_pending + 2) &
~REQUEUE_PENDING;
timr->it_overrun_last = 0;
- /* switch off the timer when it_value is zero */
+ /* Switch off the timer when it_value is zero */
if (!new_setting->it_value.tv_sec && !new_setting->it_value.tv_nsec)
return 0;
- mode = flags & TIMER_ABSTIME ? HRTIMER_MODE_ABS : HRTIMER_MODE_REL;
- hrtimer_init(&timr->it.real.timer, timr->it_clock, mode);
- timr->it.real.timer.function = posix_timer_fn;
-
- hrtimer_set_expires(timer, timespec64_to_ktime(new_setting->it_value));
-
- /* Convert interval */
- timr->it.real.interval = timespec64_to_ktime(new_setting->it_interval);
-
- /* SIGEV_NONE timers are not queued ! See common_timer_get */
- if (((timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE)) {
- /* Setup correct expiry time for relative timers */
- if (mode == HRTIMER_MODE_REL) {
- hrtimer_add_expires(timer, timer->base->get_time());
- }
- return 0;
- }
+ timr->it_interval = timespec64_to_ktime(new_setting->it_interval);
+ expires = timespec64_to_ktime(new_setting->it_value);
+ sigev_none = (timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE;
- hrtimer_start_expires(timer, mode);
+ kc->timer_arm(timr, expires, flags & TIMER_ABSTIME, sigev_none);
+ timr->it_active = !sigev_none;
return 0;
}
-/* Set a POSIX.1b interval timer */
-SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
- const struct itimerspec __user *, new_setting,
- struct itimerspec __user *, old_setting)
+static int do_timer_settime(timer_t timer_id, int flags,
+ struct itimerspec64 *new_spec64,
+ struct itimerspec64 *old_spec64)
{
- struct itimerspec64 new_spec64, old_spec64;
- struct itimerspec64 *rtn = old_setting ? &old_spec64 : NULL;
- struct itimerspec new_spec, old_spec;
+ const struct k_clock *kc;
struct k_itimer *timr;
unsigned long flag;
- struct k_clock *kc;
int error = 0;
- if (!new_setting)
+ if (!timespec64_valid(&new_spec64->it_interval) ||
+ !timespec64_valid(&new_spec64->it_value))
return -EINVAL;
- if (copy_from_user(&new_spec, new_setting, sizeof (new_spec)))
- return -EFAULT;
- new_spec64 = itimerspec_to_itimerspec64(&new_spec);
-
- if (!timespec64_valid(&new_spec64.it_interval) ||
- !timespec64_valid(&new_spec64.it_value))
- return -EINVAL;
+ if (old_spec64)
+ memset(old_spec64, 0, sizeof(*old_spec64));
retry:
timr = lock_timer(timer_id, &flag);
if (!timr)
return -EINVAL;
- kc = clockid_to_kclock(timr->it_clock);
+ kc = timr->kclock;
if (WARN_ON_ONCE(!kc || !kc->timer_set))
error = -EINVAL;
else
- error = kc->timer_set(timr, flags, &new_spec64, rtn);
+ error = kc->timer_set(timr, flags, new_spec64, old_spec64);
unlock_timer(timr, flag);
if (error == TIMER_RETRY) {
- rtn = NULL; // We already got the old time...
+ old_spec64 = NULL; // We already got the old time...
goto retry;
}
- old_spec = itimerspec64_to_itimerspec(&old_spec64);
- if (old_setting && !error &&
- copy_to_user(old_setting, &old_spec, sizeof (old_spec)))
- error = -EFAULT;
+ return error;
+}
+
+/* Set a POSIX.1b interval timer */
+SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
+ const struct itimerspec __user *, new_setting,
+ struct itimerspec __user *, old_setting)
+{
+ struct itimerspec64 new_spec64, old_spec64;
+ struct itimerspec64 *rtn = old_setting ? &old_spec64 : NULL;
+ struct itimerspec new_spec;
+ int error = 0;
+
+ if (!new_setting)
+ return -EINVAL;
+
+ if (copy_from_user(&new_spec, new_setting, sizeof (new_spec)))
+ return -EFAULT;
+ new_spec64 = itimerspec_to_itimerspec64(&new_spec);
+
+ error = do_timer_settime(timer_id, flags, &new_spec64, rtn);
+ if (!error && old_setting) {
+ struct itimerspec old_spec;
+ old_spec = itimerspec64_to_itimerspec(&old_spec64);
+ if (copy_to_user(old_setting, &old_spec, sizeof (old_spec)))
+ error = -EFAULT;
+ }
+ return error;
+}
+
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
+ struct compat_itimerspec __user *, new,
+ struct compat_itimerspec __user *, old)
+{
+ struct itimerspec64 new_spec64, old_spec64;
+ struct itimerspec64 *rtn = old ? &old_spec64 : NULL;
+ struct itimerspec new_spec;
+ int error = 0;
+
+ if (!new)
+ return -EINVAL;
+ if (get_compat_itimerspec(&new_spec, new))
+ return -EFAULT;
+ new_spec64 = itimerspec_to_itimerspec64(&new_spec);
+ error = do_timer_settime(timer_id, flags, &new_spec64, rtn);
+ if (!error && old) {
+ struct itimerspec old_spec;
+ old_spec = itimerspec64_to_itimerspec(&old_spec64);
+ if (put_compat_itimerspec(old, &old_spec))
+ error = -EFAULT;
+ }
return error;
}
+#endif
-static int common_timer_del(struct k_itimer *timer)
+int common_timer_del(struct k_itimer *timer)
{
- timer->it.real.interval = 0;
+ const struct k_clock *kc = timer->kclock;
- if (hrtimer_try_to_cancel(&timer->it.real.timer) < 0)
+ timer->it_interval = 0;
+ if (kc->timer_try_to_cancel(timer) < 0)
return TIMER_RETRY;
+ timer->it_active = 0;
return 0;
}
static inline int timer_delete_hook(struct k_itimer *timer)
{
- struct k_clock *kc = clockid_to_kclock(timer->it_clock);
+ const struct k_clock *kc = timer->kclock;
if (WARN_ON_ONCE(!kc || !kc->timer_del))
return -EINVAL;
@@ -1018,7 +1048,7 @@ void exit_itimers(struct signal_struct *sig)
SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
const struct timespec __user *, tp)
{
- struct k_clock *kc = clockid_to_kclock(which_clock);
+ const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 new_tp64;
struct timespec new_tp;
@@ -1035,7 +1065,7 @@ SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
struct timespec __user *,tp)
{
- struct k_clock *kc = clockid_to_kclock(which_clock);
+ const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 kernel_tp64;
struct timespec kernel_tp;
int error;
@@ -1055,7 +1085,7 @@ SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
SYSCALL_DEFINE2(clock_adjtime, const clockid_t, which_clock,
struct timex __user *, utx)
{
- struct k_clock *kc = clockid_to_kclock(which_clock);
+ const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timex ktx;
int err;
@@ -1078,7 +1108,7 @@ SYSCALL_DEFINE2(clock_adjtime, const clockid_t, which_clock,
SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock,
struct timespec __user *, tp)
{
- struct k_clock *kc = clockid_to_kclock(which_clock);
+ const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 rtn_tp64;
struct timespec rtn_tp;
int error;
@@ -1095,13 +1125,98 @@ SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock,
return error;
}
+#ifdef CONFIG_COMPAT
+
+COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock,
+ struct compat_timespec __user *, tp)
+{
+ const struct k_clock *kc = clockid_to_kclock(which_clock);
+ struct timespec64 new_tp64;
+ struct timespec new_tp;
+
+ if (!kc || !kc->clock_set)
+ return -EINVAL;
+
+ if (compat_get_timespec(&new_tp, tp))
+ return -EFAULT;
+
+ new_tp64 = timespec_to_timespec64(new_tp);
+
+ return kc->clock_set(which_clock, &new_tp64);
+}
+
+COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
+ struct compat_timespec __user *, tp)
+{
+ const struct k_clock *kc = clockid_to_kclock(which_clock);
+ struct timespec64 kernel_tp64;
+ struct timespec kernel_tp;
+ int error;
+
+ if (!kc)
+ return -EINVAL;
+
+ error = kc->clock_get(which_clock, &kernel_tp64);
+ kernel_tp = timespec64_to_timespec(kernel_tp64);
+
+ if (!error && compat_put_timespec(&kernel_tp, tp))
+ error = -EFAULT;
+
+ return error;
+}
+
+COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock,
+ struct compat_timex __user *, utp)
+{
+ const struct k_clock *kc = clockid_to_kclock(which_clock);
+ struct timex ktx;
+ int err;
+
+ if (!kc)
+ return -EINVAL;
+ if (!kc->clock_adj)
+ return -EOPNOTSUPP;
+
+ err = compat_get_timex(&ktx, utp);
+ if (err)
+ return err;
+
+ err = kc->clock_adj(which_clock, &ktx);
+
+ if (err >= 0)
+ err = compat_put_timex(utp, &ktx);
+
+ return err;
+}
+
+COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
+ struct compat_timespec __user *, tp)
+{
+ const struct k_clock *kc = clockid_to_kclock(which_clock);
+ struct timespec64 rtn_tp64;
+ struct timespec rtn_tp;
+ int error;
+
+ if (!kc)
+ return -EINVAL;
+
+ error = kc->clock_getres(which_clock, &rtn_tp64);
+ rtn_tp = timespec64_to_timespec(rtn_tp64);
+
+ if (!error && tp && compat_put_timespec(&rtn_tp, tp))
+ error = -EFAULT;
+
+ return error;
+}
+#endif
+
/*
* nanosleep for monotonic and realtime clocks
*/
static int common_nsleep(const clockid_t which_clock, int flags,
- struct timespec64 *tsave, struct timespec __user *rmtp)
+ const struct timespec64 *rqtp)
{
- return hrtimer_nanosleep(tsave, rmtp, flags & TIMER_ABSTIME ?
+ return hrtimer_nanosleep(rqtp, flags & TIMER_ABSTIME ?
HRTIMER_MODE_ABS : HRTIMER_MODE_REL,
which_clock);
}
@@ -1110,7 +1225,7 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
const struct timespec __user *, rqtp,
struct timespec __user *, rmtp)
{
- struct k_clock *kc = clockid_to_kclock(which_clock);
+ const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 t64;
struct timespec t;
@@ -1125,21 +1240,141 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
t64 = timespec_to_timespec64(t);
if (!timespec64_valid(&t64))
return -EINVAL;
+ if (flags & TIMER_ABSTIME)
+ rmtp = NULL;
+ current->restart_block.nanosleep.type = rmtp ? TT_NATIVE : TT_NONE;
+ current->restart_block.nanosleep.rmtp = rmtp;
- return kc->nsleep(which_clock, flags, &t64, rmtp);
+ return kc->nsleep(which_clock, flags, &t64);
}
-/*
- * This will restart clock_nanosleep. This is required only by
- * compat_clock_nanosleep_restart for now.
- */
-long clock_nanosleep_restart(struct restart_block *restart_block)
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags,
+ struct compat_timespec __user *, rqtp,
+ struct compat_timespec __user *, rmtp)
{
- clockid_t which_clock = restart_block->nanosleep.clockid;
- struct k_clock *kc = clockid_to_kclock(which_clock);
+ const struct k_clock *kc = clockid_to_kclock(which_clock);
+ struct timespec64 t64;
+ struct timespec t;
- if (WARN_ON_ONCE(!kc || !kc->nsleep_restart))
+ if (!kc)
return -EINVAL;
+ if (!kc->nsleep)
+ return -ENANOSLEEP_NOTSUP;
- return kc->nsleep_restart(restart_block);
+ if (compat_get_timespec(&t, rqtp))
+ return -EFAULT;
+
+ t64 = timespec_to_timespec64(t);
+ if (!timespec64_valid(&t64))
+ return -EINVAL;
+ if (flags & TIMER_ABSTIME)
+ rmtp = NULL;
+ current->restart_block.nanosleep.type = rmtp ? TT_COMPAT : TT_NONE;
+ current->restart_block.nanosleep.compat_rmtp = rmtp;
+
+ return kc->nsleep(which_clock, flags, &t64);
+}
+#endif
+
+static const struct k_clock clock_realtime = {
+ .clock_getres = posix_get_hrtimer_res,
+ .clock_get = posix_clock_realtime_get,
+ .clock_set = posix_clock_realtime_set,
+ .clock_adj = posix_clock_realtime_adj,
+ .nsleep = common_nsleep,
+ .timer_create = common_timer_create,
+ .timer_set = common_timer_set,
+ .timer_get = common_timer_get,
+ .timer_del = common_timer_del,
+ .timer_rearm = common_hrtimer_rearm,
+ .timer_forward = common_hrtimer_forward,
+ .timer_remaining = common_hrtimer_remaining,
+ .timer_try_to_cancel = common_hrtimer_try_to_cancel,
+ .timer_arm = common_hrtimer_arm,
+};
+
+static const struct k_clock clock_monotonic = {
+ .clock_getres = posix_get_hrtimer_res,
+ .clock_get = posix_ktime_get_ts,
+ .nsleep = common_nsleep,
+ .timer_create = common_timer_create,
+ .timer_set = common_timer_set,
+ .timer_get = common_timer_get,
+ .timer_del = common_timer_del,
+ .timer_rearm = common_hrtimer_rearm,
+ .timer_forward = common_hrtimer_forward,
+ .timer_remaining = common_hrtimer_remaining,
+ .timer_try_to_cancel = common_hrtimer_try_to_cancel,
+ .timer_arm = common_hrtimer_arm,
+};
+
+static const struct k_clock clock_monotonic_raw = {
+ .clock_getres = posix_get_hrtimer_res,
+ .clock_get = posix_get_monotonic_raw,
+};
+
+static const struct k_clock clock_realtime_coarse = {
+ .clock_getres = posix_get_coarse_res,
+ .clock_get = posix_get_realtime_coarse,
+};
+
+static const struct k_clock clock_monotonic_coarse = {
+ .clock_getres = posix_get_coarse_res,
+ .clock_get = posix_get_monotonic_coarse,
+};
+
+static const struct k_clock clock_tai = {
+ .clock_getres = posix_get_hrtimer_res,
+ .clock_get = posix_get_tai,
+ .nsleep = common_nsleep,
+ .timer_create = common_timer_create,
+ .timer_set = common_timer_set,
+ .timer_get = common_timer_get,
+ .timer_del = common_timer_del,
+ .timer_rearm = common_hrtimer_rearm,
+ .timer_forward = common_hrtimer_forward,
+ .timer_remaining = common_hrtimer_remaining,
+ .timer_try_to_cancel = common_hrtimer_try_to_cancel,
+ .timer_arm = common_hrtimer_arm,
+};
+
+static const struct k_clock clock_boottime = {
+ .clock_getres = posix_get_hrtimer_res,
+ .clock_get = posix_get_boottime,
+ .nsleep = common_nsleep,
+ .timer_create = common_timer_create,
+ .timer_set = common_timer_set,
+ .timer_get = common_timer_get,
+ .timer_del = common_timer_del,
+ .timer_rearm = common_hrtimer_rearm,
+ .timer_forward = common_hrtimer_forward,
+ .timer_remaining = common_hrtimer_remaining,
+ .timer_try_to_cancel = common_hrtimer_try_to_cancel,
+ .timer_arm = common_hrtimer_arm,
+};
+
+static const struct k_clock * const posix_clocks[] = {
+ [CLOCK_REALTIME] = &clock_realtime,
+ [CLOCK_MONOTONIC] = &clock_monotonic,
+ [CLOCK_PROCESS_CPUTIME_ID] = &clock_process,
+ [CLOCK_THREAD_CPUTIME_ID] = &clock_thread,
+ [CLOCK_MONOTONIC_RAW] = &clock_monotonic_raw,
+ [CLOCK_REALTIME_COARSE] = &clock_realtime_coarse,
+ [CLOCK_MONOTONIC_COARSE] = &clock_monotonic_coarse,
+ [CLOCK_BOOTTIME] = &clock_boottime,
+ [CLOCK_REALTIME_ALARM] = &alarm_clock,
+ [CLOCK_BOOTTIME_ALARM] = &alarm_clock,
+ [CLOCK_TAI] = &clock_tai,
+};
+
+static const struct k_clock *clockid_to_kclock(const clockid_t id)
+{
+ if (id < 0)
+ return (id & CLOCKFD_MASK) == CLOCKFD ?
+ &clock_posix_dynamic : &clock_posix_cpu;
+
+ if (id >= ARRAY_SIZE(posix_clocks) || !posix_clocks[id])
+ return NULL;
+ return posix_clocks[id];
}
diff --git a/kernel/time/posix-timers.h b/kernel/time/posix-timers.h
new file mode 100644
index 0000000..fb303c3
--- /dev/null
+++ b/kernel/time/posix-timers.h
@@ -0,0 +1,40 @@
+#define TIMER_RETRY 1
+
+struct k_clock {
+ int (*clock_getres)(const clockid_t which_clock,
+ struct timespec64 *tp);
+ int (*clock_set)(const clockid_t which_clock,
+ const struct timespec64 *tp);
+ int (*clock_get)(const clockid_t which_clock,
+ struct timespec64 *tp);
+ int (*clock_adj)(const clockid_t which_clock, struct timex *tx);
+ int (*timer_create)(struct k_itimer *timer);
+ int (*nsleep)(const clockid_t which_clock, int flags,
+ const struct timespec64 *);
+ int (*timer_set)(struct k_itimer *timr, int flags,
+ struct itimerspec64 *new_setting,
+ struct itimerspec64 *old_setting);
+ int (*timer_del)(struct k_itimer *timr);
+ void (*timer_get)(struct k_itimer *timr,
+ struct itimerspec64 *cur_setting);
+ void (*timer_rearm)(struct k_itimer *timr);
+ int (*timer_forward)(struct k_itimer *timr, ktime_t now);
+ ktime_t (*timer_remaining)(struct k_itimer *timr, ktime_t now);
+ int (*timer_try_to_cancel)(struct k_itimer *timr);
+ void (*timer_arm)(struct k_itimer *timr, ktime_t expires,
+ bool absolute, bool sigev_none);
+};
+
+extern const struct k_clock clock_posix_cpu;
+extern const struct k_clock clock_posix_dynamic;
+extern const struct k_clock clock_process;
+extern const struct k_clock clock_thread;
+extern const struct k_clock alarm_clock;
+
+int posix_timer_event(struct k_itimer *timr, int si_private);
+
+void common_timer_get(struct k_itimer *timr, struct itimerspec64 *cur_setting);
+int common_timer_set(struct k_itimer *timr, int flags,
+ struct itimerspec64 *new_setting,
+ struct itimerspec64 *old_setting);
+int common_timer_del(struct k_itimer *timer);
diff --git a/kernel/time/time.c b/kernel/time/time.c
index 49c73c6..7c89e43 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -39,6 +39,7 @@
#include <linux/ptrace.h>
#include <linux/uaccess.h>
+#include <linux/compat.h>
#include <asm/unistd.h>
#include <generated/timeconst.h>
@@ -99,6 +100,47 @@ SYSCALL_DEFINE1(stime, time_t __user *, tptr)
#endif /* __ARCH_WANT_SYS_TIME */
+#ifdef CONFIG_COMPAT
+#ifdef __ARCH_WANT_COMPAT_SYS_TIME
+
+/* compat_time_t is a 32 bit "long" and needs to get converted. */
+COMPAT_SYSCALL_DEFINE1(time, compat_time_t __user *, tloc)
+{
+ struct timeval tv;
+ compat_time_t i;
+
+ do_gettimeofday(&tv);
+ i = tv.tv_sec;
+
+ if (tloc) {
+ if (put_user(i,tloc))
+ return -EFAULT;
+ }
+ force_successful_syscall_return();
+ return i;
+}
+
+COMPAT_SYSCALL_DEFINE1(stime, compat_time_t __user *, tptr)
+{
+ struct timespec tv;
+ int err;
+
+ if (get_user(tv.tv_sec, tptr))
+ return -EFAULT;
+
+ tv.tv_nsec = 0;
+
+ err = security_settime(&tv, NULL);
+ if (err)
+ return err;
+
+ do_settimeofday(&tv);
+ return 0;
+}
+
+#endif /* __ARCH_WANT_COMPAT_SYS_TIME */
+#endif
+
SYSCALL_DEFINE2(gettimeofday, struct timeval __user *, tv,
struct timezone __user *, tz)
{
@@ -215,6 +257,47 @@ SYSCALL_DEFINE2(settimeofday, struct timeval __user *, tv,
return do_sys_settimeofday64(tv ? &new_ts : NULL, tz ? &new_tz : NULL);
}
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE2(gettimeofday, struct compat_timeval __user *, tv,
+ struct timezone __user *, tz)
+{
+ if (tv) {
+ struct timeval ktv;
+
+ do_gettimeofday(&ktv);
+ if (compat_put_timeval(&ktv, tv))
+ return -EFAULT;
+ }
+ if (tz) {
+ if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+COMPAT_SYSCALL_DEFINE2(settimeofday, struct compat_timeval __user *, tv,
+ struct timezone __user *, tz)
+{
+ struct timespec64 new_ts;
+ struct timeval user_tv;
+ struct timezone new_tz;
+
+ if (tv) {
+ if (compat_get_timeval(&user_tv, tv))
+ return -EFAULT;
+ new_ts.tv_sec = user_tv.tv_sec;
+ new_ts.tv_nsec = user_tv.tv_usec * NSEC_PER_USEC;
+ }
+ if (tz) {
+ if (copy_from_user(&new_tz, tz, sizeof(*tz)))
+ return -EFAULT;
+ }
+
+ return do_sys_settimeofday64(tv ? &new_ts : NULL, tz ? &new_tz : NULL);
+}
+#endif
+
SYSCALL_DEFINE1(adjtimex, struct timex __user *, txc_p)
{
struct timex txc; /* Local copy of parameter */
@@ -224,12 +307,33 @@ SYSCALL_DEFINE1(adjtimex, struct timex __user *, txc_p)
* structure. But bear in mind that the structures
* may change
*/
- if(copy_from_user(&txc, txc_p, sizeof(struct timex)))
+ if (copy_from_user(&txc, txc_p, sizeof(struct timex)))
return -EFAULT;
ret = do_adjtimex(&txc);
return copy_to_user(txc_p, &txc, sizeof(struct timex)) ? -EFAULT : ret;
}
+#ifdef CONFIG_COMPAT
+
+COMPAT_SYSCALL_DEFINE1(adjtimex, struct compat_timex __user *, utp)
+{
+ struct timex txc;
+ int err, ret;
+
+ err = compat_get_timex(&txc, utp);
+ if (err)
+ return err;
+
+ ret = do_adjtimex(&txc);
+
+ err = compat_put_timex(utp, &txc);
+ if (err)
+ return err;
+
+ return ret;
+}
+#endif
+
/*
* Convert jiffies to milliseconds and back.
*
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index b602c48..cedafa0 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -72,6 +72,10 @@ static inline void tk_normalize_xtime(struct timekeeper *tk)
tk->tkr_mono.xtime_nsec -= (u64)NSEC_PER_SEC << tk->tkr_mono.shift;
tk->xtime_sec++;
}
+ while (tk->tkr_raw.xtime_nsec >= ((u64)NSEC_PER_SEC << tk->tkr_raw.shift)) {
+ tk->tkr_raw.xtime_nsec -= (u64)NSEC_PER_SEC << tk->tkr_raw.shift;
+ tk->raw_sec++;
+ }
}
static inline struct timespec64 tk_xtime(struct timekeeper *tk)
@@ -285,12 +289,14 @@ static void tk_setup_internals(struct timekeeper *tk, struct clocksource *clock)
/* if changing clocks, convert xtime_nsec shift units */
if (old_clock) {
int shift_change = clock->shift - old_clock->shift;
- if (shift_change < 0)
+ if (shift_change < 0) {
tk->tkr_mono.xtime_nsec >>= -shift_change;
- else
+ tk->tkr_raw.xtime_nsec >>= -shift_change;
+ } else {
tk->tkr_mono.xtime_nsec <<= shift_change;
+ tk->tkr_raw.xtime_nsec <<= shift_change;
+ }
}
- tk->tkr_raw.xtime_nsec = 0;
tk->tkr_mono.shift = clock->shift;
tk->tkr_raw.shift = clock->shift;
@@ -510,6 +516,7 @@ static void halt_fast_timekeeper(struct timekeeper *tk)
}
#ifdef CONFIG_GENERIC_TIME_VSYSCALL_OLD
+#warning Please contact your maintainers, as GENERIC_TIME_VSYSCALL_OLD compatibity will disappear soon.
static inline void update_vsyscall(struct timekeeper *tk)
{
@@ -619,9 +626,6 @@ static inline void tk_update_ktime_data(struct timekeeper *tk)
nsec = (u32) tk->wall_to_monotonic.tv_nsec;
tk->tkr_mono.base = ns_to_ktime(seconds * NSEC_PER_SEC + nsec);
- /* Update the monotonic raw base */
- tk->tkr_raw.base = timespec64_to_ktime(tk->raw_time);
-
/*
* The sum of the nanoseconds portions of xtime and
* wall_to_monotonic can be greater/equal one second. Take
@@ -631,6 +635,11 @@ static inline void tk_update_ktime_data(struct timekeeper *tk)
if (nsec >= NSEC_PER_SEC)
seconds++;
tk->ktime_sec = seconds;
+
+ /* Update the monotonic raw base */
+ seconds = tk->raw_sec;
+ nsec = (u32)(tk->tkr_raw.xtime_nsec >> tk->tkr_raw.shift);
+ tk->tkr_raw.base = ns_to_ktime(seconds * NSEC_PER_SEC + nsec);
}
/* must hold timekeeper_lock */
@@ -672,7 +681,6 @@ static void timekeeping_update(struct timekeeper *tk, unsigned int action)
static void timekeeping_forward_now(struct timekeeper *tk)
{
u64 cycle_now, delta;
- u64 nsec;
cycle_now = tk_clock_read(&tk->tkr_mono);
delta = clocksource_delta(cycle_now, tk->tkr_mono.cycle_last, tk->tkr_mono.mask);
@@ -684,10 +692,13 @@ static void timekeeping_forward_now(struct timekeeper *tk)
/* If arch requires, add in get_arch_timeoffset() */
tk->tkr_mono.xtime_nsec += (u64)arch_gettimeoffset() << tk->tkr_mono.shift;
- tk_normalize_xtime(tk);
- nsec = clocksource_cyc2ns(delta, tk->tkr_raw.mult, tk->tkr_raw.shift);
- timespec64_add_ns(&tk->raw_time, nsec);
+ tk->tkr_raw.xtime_nsec += delta * tk->tkr_raw.mult;
+
+ /* If arch requires, add in get_arch_timeoffset() */
+ tk->tkr_raw.xtime_nsec += (u64)arch_gettimeoffset() << tk->tkr_raw.shift;
+
+ tk_normalize_xtime(tk);
}
/**
@@ -1373,19 +1384,18 @@ int timekeeping_notify(struct clocksource *clock)
void getrawmonotonic64(struct timespec64 *ts)
{
struct timekeeper *tk = &tk_core.timekeeper;
- struct timespec64 ts64;
unsigned long seq;
u64 nsecs;
do {
seq = read_seqcount_begin(&tk_core.seq);
+ ts->tv_sec = tk->raw_sec;
nsecs = timekeeping_get_ns(&tk->tkr_raw);
- ts64 = tk->raw_time;
} while (read_seqcount_retry(&tk_core.seq, seq));
- timespec64_add_ns(&ts64, nsecs);
- *ts = ts64;
+ ts->tv_nsec = 0;
+ timespec64_add_ns(ts, nsecs);
}
EXPORT_SYMBOL(getrawmonotonic64);
@@ -1509,8 +1519,7 @@ void __init timekeeping_init(void)
tk_setup_internals(tk, clock);
tk_set_xtime(tk, &now);
- tk->raw_time.tv_sec = 0;
- tk->raw_time.tv_nsec = 0;
+ tk->raw_sec = 0;
if (boot.tv_sec == 0 && boot.tv_nsec == 0)
boot = tk_xtime(tk);
@@ -2011,15 +2020,12 @@ static u64 logarithmic_accumulation(struct timekeeper *tk, u64 offset,
*clock_set |= accumulate_nsecs_to_secs(tk);
/* Accumulate raw time */
- tk->tkr_raw.xtime_nsec += (u64)tk->raw_time.tv_nsec << tk->tkr_raw.shift;
tk->tkr_raw.xtime_nsec += tk->raw_interval << shift;
snsec_per_sec = (u64)NSEC_PER_SEC << tk->tkr_raw.shift;
while (tk->tkr_raw.xtime_nsec >= snsec_per_sec) {
tk->tkr_raw.xtime_nsec -= snsec_per_sec;
- tk->raw_time.tv_sec++;
+ tk->raw_sec++;
}
- tk->raw_time.tv_nsec = tk->tkr_raw.xtime_nsec >> tk->tkr_raw.shift;
- tk->tkr_raw.xtime_nsec -= (u64)tk->raw_time.tv_nsec << tk->tkr_raw.shift;
/* Accumulate error between NTP and clock interval */
tk->ntp_error += tk->ntp_tick << shift;
diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 152a706..71ce3f4 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -195,7 +195,7 @@ EXPORT_SYMBOL(jiffies_64);
#endif
struct timer_base {
- spinlock_t lock;
+ raw_spinlock_t lock;
struct timer_list *running_timer;
unsigned long clk;
unsigned long next_expiry;
@@ -913,10 +913,10 @@ static struct timer_base *lock_timer_base(struct timer_list *timer,
if (!(tf & TIMER_MIGRATING)) {
base = get_timer_base(tf);
- spin_lock_irqsave(&base->lock, *flags);
+ raw_spin_lock_irqsave(&base->lock, *flags);
if (timer->flags == tf)
return base;
- spin_unlock_irqrestore(&base->lock, *flags);
+ raw_spin_unlock_irqrestore(&base->lock, *flags);
}
cpu_relax();
}
@@ -986,9 +986,9 @@ __mod_timer(struct timer_list *timer, unsigned long expires, bool pending_only)
/* See the comment in lock_timer_base() */
timer->flags |= TIMER_MIGRATING;
- spin_unlock(&base->lock);
+ raw_spin_unlock(&base->lock);
base = new_base;
- spin_lock(&base->lock);
+ raw_spin_lock(&base->lock);
WRITE_ONCE(timer->flags,
(timer->flags & ~TIMER_BASEMASK) | base->cpu);
}
@@ -1013,7 +1013,7 @@ __mod_timer(struct timer_list *timer, unsigned long expires, bool pending_only)
}
out_unlock:
- spin_unlock_irqrestore(&base->lock, flags);
+ raw_spin_unlock_irqrestore(&base->lock, flags);
return ret;
}
@@ -1106,16 +1106,16 @@ void add_timer_on(struct timer_list *timer, int cpu)
if (base != new_base) {
timer->flags |= TIMER_MIGRATING;
- spin_unlock(&base->lock);
+ raw_spin_unlock(&base->lock);
base = new_base;
- spin_lock(&base->lock);
+ raw_spin_lock(&base->lock);
WRITE_ONCE(timer->flags,
(timer->flags & ~TIMER_BASEMASK) | cpu);
}
debug_activate(timer, timer->expires);
internal_add_timer(base, timer);
- spin_unlock_irqrestore(&base->lock, flags);
+ raw_spin_unlock_irqrestore(&base->lock, flags);
}
EXPORT_SYMBOL_GPL(add_timer_on);
@@ -1141,7 +1141,7 @@ int del_timer(struct timer_list *timer)
if (timer_pending(timer)) {
base = lock_timer_base(timer, &flags);
ret = detach_if_pending(timer, base, true);
- spin_unlock_irqrestore(&base->lock, flags);
+ raw_spin_unlock_irqrestore(&base->lock, flags);
}
return ret;
@@ -1150,7 +1150,7 @@ EXPORT_SYMBOL(del_timer);
/**
* try_to_del_timer_sync - Try to deactivate a timer
- * @timer: timer do del
+ * @timer: timer to delete
*
* This function tries to deactivate a timer. Upon successful (ret >= 0)
* exit the timer is not queued and the handler is not running on any CPU.
@@ -1168,7 +1168,7 @@ int try_to_del_timer_sync(struct timer_list *timer)
if (base->running_timer != timer)
ret = detach_if_pending(timer, base, true);
- spin_unlock_irqrestore(&base->lock, flags);
+ raw_spin_unlock_irqrestore(&base->lock, flags);
return ret;
}
@@ -1299,13 +1299,13 @@ static void expire_timers(struct timer_base *base, struct hlist_head *head)
data = timer->data;
if (timer->flags & TIMER_IRQSAFE) {
- spin_unlock(&base->lock);
+ raw_spin_unlock(&base->lock);
call_timer_fn(timer, fn, data);
- spin_lock(&base->lock);
+ raw_spin_lock(&base->lock);
} else {
- spin_unlock_irq(&base->lock);
+ raw_spin_unlock_irq(&base->lock);
call_timer_fn(timer, fn, data);
- spin_lock_irq(&base->lock);
+ raw_spin_lock_irq(&base->lock);
}
}
}
@@ -1474,7 +1474,7 @@ u64 get_next_timer_interrupt(unsigned long basej, u64 basem)
if (cpu_is_offline(smp_processor_id()))
return expires;
- spin_lock(&base->lock);
+ raw_spin_lock(&base->lock);
nextevt = __next_timer_interrupt(base);
is_max_delta = (nextevt == base->clk + NEXT_TIMER_MAX_DELTA);
base->next_expiry = nextevt;
@@ -1502,7 +1502,7 @@ u64 get_next_timer_interrupt(unsigned long basej, u64 basem)
if ((expires - basem) > TICK_NSEC)
base->is_idle = true;
}
- spin_unlock(&base->lock);
+ raw_spin_unlock(&base->lock);
return cmp_next_hrtimer_event(basem, expires);
}
@@ -1590,7 +1590,7 @@ static inline void __run_timers(struct timer_base *base)
if (!time_after_eq(jiffies, base->clk))
return;
- spin_lock_irq(&base->lock);
+ raw_spin_lock_irq(&base->lock);
while (time_after_eq(jiffies, base->clk)) {
@@ -1601,7 +1601,7 @@ static inline void __run_timers(struct timer_base *base)
expire_timers(base, heads + levels);
}
base->running_timer = NULL;
- spin_unlock_irq(&base->lock);
+ raw_spin_unlock_irq(&base->lock);
}
/*
@@ -1786,16 +1786,16 @@ int timers_dead_cpu(unsigned int cpu)
* The caller is globally serialized and nobody else
* takes two locks at once, deadlock is not possible.
*/
- spin_lock_irq(&new_base->lock);
- spin_lock_nested(&old_base->lock, SINGLE_DEPTH_NESTING);
+ raw_spin_lock_irq(&new_base->lock);
+ raw_spin_lock_nested(&old_base->lock, SINGLE_DEPTH_NESTING);
BUG_ON(old_base->running_timer);
for (i = 0; i < WHEEL_SIZE; i++)
migrate_timer_list(new_base, old_base->vectors + i);
- spin_unlock(&old_base->lock);
- spin_unlock_irq(&new_base->lock);
+ raw_spin_unlock(&old_base->lock);
+ raw_spin_unlock_irq(&new_base->lock);
put_cpu_ptr(&timer_bases);
}
return 0;
@@ -1811,7 +1811,7 @@ static void __init init_timer_cpu(int cpu)
for (i = 0; i < NR_BASES; i++) {
base = per_cpu_ptr(&timer_bases[i], cpu);
base->cpu = cpu;
- spin_lock_init(&base->lock);
+ raw_spin_lock_init(&base->lock);
base->clk = jiffies;
}
}
diff --git a/tools/testing/selftests/timers/Makefile b/tools/testing/selftests/timers/Makefile
index 5fa1d7e9..5801bbe 100644
--- a/tools/testing/selftests/timers/Makefile
+++ b/tools/testing/selftests/timers/Makefile
@@ -1,6 +1,6 @@
BUILD_FLAGS = -DKTEST
CFLAGS += -O3 -Wl,-no-as-needed -Wall $(BUILD_FLAGS)
-LDFLAGS += -lrt -lpthread
+LDFLAGS += -lrt -lpthread -lm
# these are all "safe" tests that don't modify
# system time or require escalated privileges
@@ -8,7 +8,7 @@ TEST_GEN_PROGS = posix_timers nanosleep nsleep-lat set-timer-lat mqueue-lat \
inconsistency-check raw_skew threadtest rtctest
TEST_GEN_PROGS_EXTENDED = alarmtimer-suspend valid-adjtimex adjtick change_skew \
- skew_consistency clocksource-switch leap-a-day \
+ skew_consistency clocksource-switch freq-step leap-a-day \
leapcrash set-tai set-2038 set-tz
@@ -24,6 +24,7 @@ run_destructive_tests: run_tests
./change_skew
./skew_consistency
./clocksource-switch
+ ./freq-step
./leap-a-day -s -i 10
./leapcrash
./set-tz
diff --git a/tools/testing/selftests/timers/freq-step.c b/tools/testing/selftests/timers/freq-step.c
new file mode 100644
index 0000000..e8c6183
--- /dev/null
+++ b/tools/testing/selftests/timers/freq-step.c
@@ -0,0 +1,268 @@
+/*
+ * This test checks the response of the system clock to frequency
+ * steps made with adjtimex(). The frequency error and stability of
+ * the CLOCK_MONOTONIC clock relative to the CLOCK_MONOTONIC_RAW clock
+ * is measured in two intervals following the step. The test fails if
+ * values from the second interval exceed specified limits.
+ *
+ * Copyright (C) Miroslav Lichvar <mlichvar@redhat.com> 2017
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <math.h>
+#include <stdio.h>
+#include <sys/timex.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "../kselftest.h"
+
+#define SAMPLES 100
+#define SAMPLE_READINGS 10
+#define MEAN_SAMPLE_INTERVAL 0.1
+#define STEP_INTERVAL 1.0
+#define MAX_PRECISION 100e-9
+#define MAX_FREQ_ERROR 10e-6
+#define MAX_STDDEV 1000e-9
+
+struct sample {
+ double offset;
+ double time;
+};
+
+static time_t mono_raw_base;
+static time_t mono_base;
+static long user_hz;
+static double precision;
+static double mono_freq_offset;
+
+static double diff_timespec(struct timespec *ts1, struct timespec *ts2)
+{
+ return ts1->tv_sec - ts2->tv_sec + (ts1->tv_nsec - ts2->tv_nsec) / 1e9;
+}
+
+static double get_sample(struct sample *sample)
+{
+ double delay, mindelay = 0.0;
+ struct timespec ts1, ts2, ts3;
+ int i;
+
+ for (i = 0; i < SAMPLE_READINGS; i++) {
+ clock_gettime(CLOCK_MONOTONIC_RAW, &ts1);
+ clock_gettime(CLOCK_MONOTONIC, &ts2);
+ clock_gettime(CLOCK_MONOTONIC_RAW, &ts3);
+
+ ts1.tv_sec -= mono_raw_base;
+ ts2.tv_sec -= mono_base;
+ ts3.tv_sec -= mono_raw_base;
+
+ delay = diff_timespec(&ts3, &ts1);
+ if (delay <= 1e-9) {
+ i--;
+ continue;
+ }
+
+ if (!i || delay < mindelay) {
+ sample->offset = diff_timespec(&ts2, &ts1);
+ sample->offset -= delay / 2.0;
+ sample->time = ts1.tv_sec + ts1.tv_nsec / 1e9;
+ mindelay = delay;
+ }
+ }
+
+ return mindelay;
+}
+
+static void reset_ntp_error(void)
+{
+ struct timex txc;
+
+ txc.modes = ADJ_SETOFFSET;
+ txc.time.tv_sec = 0;
+ txc.time.tv_usec = 0;
+
+ if (adjtimex(&txc) < 0) {
+ perror("[FAIL] adjtimex");
+ ksft_exit_fail();
+ }
+}
+
+static void set_frequency(double freq)
+{
+ struct timex txc;
+ int tick_offset;
+
+ tick_offset = 1e6 * freq / user_hz;
+
+ txc.modes = ADJ_TICK | ADJ_FREQUENCY;
+ txc.tick = 1000000 / user_hz + tick_offset;
+ txc.freq = (1e6 * freq - user_hz * tick_offset) * (1 << 16);
+
+ if (adjtimex(&txc) < 0) {
+ perror("[FAIL] adjtimex");
+ ksft_exit_fail();
+ }
+}
+
+static void regress(struct sample *samples, int n, double *intercept,
+ double *slope, double *r_stddev, double *r_max)
+{
+ double x, y, r, x_sum, y_sum, xy_sum, x2_sum, r2_sum;
+ int i;
+
+ x_sum = 0.0, y_sum = 0.0, xy_sum = 0.0, x2_sum = 0.0;
+
+ for (i = 0; i < n; i++) {
+ x = samples[i].time;
+ y = samples[i].offset;
+
+ x_sum += x;
+ y_sum += y;
+ xy_sum += x * y;
+ x2_sum += x * x;
+ }
+
+ *slope = (xy_sum - x_sum * y_sum / n) / (x2_sum - x_sum * x_sum / n);
+ *intercept = (y_sum - *slope * x_sum) / n;
+
+ *r_max = 0.0, r2_sum = 0.0;
+
+ for (i = 0; i < n; i++) {
+ x = samples[i].time;
+ y = samples[i].offset;
+ r = fabs(x * *slope + *intercept - y);
+ if (*r_max < r)
+ *r_max = r;
+ r2_sum += r * r;
+ }
+
+ *r_stddev = sqrt(r2_sum / n);
+}
+
+static int run_test(int calibration, double freq_base, double freq_step)
+{
+ struct sample samples[SAMPLES];
+ double intercept, slope, stddev1, max1, stddev2, max2;
+ double freq_error1, freq_error2;
+ int i;
+
+ set_frequency(freq_base);
+
+ for (i = 0; i < 10; i++)
+ usleep(1e6 * MEAN_SAMPLE_INTERVAL / 10);
+
+ reset_ntp_error();
+
+ set_frequency(freq_base + freq_step);
+
+ for (i = 0; i < 10; i++)
+ usleep(rand() % 2000000 * STEP_INTERVAL / 10);
+
+ set_frequency(freq_base);
+
+ for (i = 0; i < SAMPLES; i++) {
+ usleep(rand() % 2000000 * MEAN_SAMPLE_INTERVAL);
+ get_sample(&samples[i]);
+ }
+
+ if (calibration) {
+ regress(samples, SAMPLES, &intercept, &slope, &stddev1, &max1);
+ mono_freq_offset = slope;
+ printf("CLOCK_MONOTONIC_RAW frequency offset: %11.3f ppm\n",
+ 1e6 * mono_freq_offset);
+ return 0;
+ }
+
+ regress(samples, SAMPLES / 2, &intercept, &slope, &stddev1, &max1);
+ freq_error1 = slope * (1.0 - mono_freq_offset) - mono_freq_offset -
+ freq_base;
+
+ regress(samples + SAMPLES / 2, SAMPLES / 2, &intercept, &slope,
+ &stddev2, &max2);
+ freq_error2 = slope * (1.0 - mono_freq_offset) - mono_freq_offset -
+ freq_base;
+
+ printf("%6.0f %+10.3f %6.0f %7.0f %+10.3f %6.0f %7.0f\t",
+ 1e6 * freq_step,
+ 1e6 * freq_error1, 1e9 * stddev1, 1e9 * max1,
+ 1e6 * freq_error2, 1e9 * stddev2, 1e9 * max2);
+
+ if (fabs(freq_error2) > MAX_FREQ_ERROR || stddev2 > MAX_STDDEV) {
+ printf("[FAIL]\n");
+ return 1;
+ }
+
+ printf("[OK]\n");
+ return 0;
+}
+
+static void init_test(void)
+{
+ struct timespec ts;
+ struct sample sample;
+
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &ts)) {
+ perror("[FAIL] clock_gettime(CLOCK_MONOTONIC_RAW)");
+ ksft_exit_fail();
+ }
+
+ mono_raw_base = ts.tv_sec;
+
+ if (clock_gettime(CLOCK_MONOTONIC, &ts)) {
+ perror("[FAIL] clock_gettime(CLOCK_MONOTONIC)");
+ ksft_exit_fail();
+ }
+
+ mono_base = ts.tv_sec;
+
+ user_hz = sysconf(_SC_CLK_TCK);
+
+ precision = get_sample(&sample) / 2.0;
+ printf("CLOCK_MONOTONIC_RAW+CLOCK_MONOTONIC precision: %.0f ns\t\t",
+ 1e9 * precision);
+
+ if (precision > MAX_PRECISION) {
+ printf("[SKIP]\n");
+ ksft_exit_skip();
+ }
+
+ printf("[OK]\n");
+ srand(ts.tv_sec ^ ts.tv_nsec);
+
+ run_test(1, 0.0, 0.0);
+}
+
+int main(int argc, char **argv)
+{
+ double freq_base, freq_step;
+ int i, j, fails = 0;
+
+ init_test();
+
+ printf("Checking response to frequency step:\n");
+ printf(" Step 1st interval 2nd interval\n");
+ printf(" Freq Dev Max Freq Dev Max\n");
+
+ for (i = 2; i >= 0; i--) {
+ for (j = 0; j < 5; j++) {
+ freq_base = (rand() % (1 << 24) - (1 << 23)) / 65536e6;
+ freq_step = 10e-6 * (1 << (6 * i));
+ fails += run_test(0, freq_base, freq_step);
+ }
+ }
+
+ set_frequency(0.0);
+
+ if (fails)
+ ksft_exit_fail();
+
+ ksft_exit_pass();
+}
diff --git a/tools/testing/selftests/timers/inconsistency-check.c b/tools/testing/selftests/timers/inconsistency-check.c
index caf1bc9..74c60e8 100644
--- a/tools/testing/selftests/timers/inconsistency-check.c
+++ b/tools/testing/selftests/timers/inconsistency-check.c
@@ -118,7 +118,7 @@ int consistency_test(int clock_type, unsigned long seconds)
start_str = ctime(&t);
while (seconds == -1 || now - then < seconds) {
- inconsistent = 0;
+ inconsistent = -1;
/* Fill list */
for (i = 0; i < CALLS_PER_LOOP; i++)
@@ -130,7 +130,7 @@ int consistency_test(int clock_type, unsigned long seconds)
inconsistent = i;
/* display inconsistency */
- if (inconsistent) {
+ if (inconsistent >= 0) {
unsigned long long delta;
printf("\%s\n", start_str);
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