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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-23 17:30:49 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-23 17:30:49 -0700
commit56c10bf82c10588b743e75a13a7949e11b9fc942 (patch)
treea2eda0459abb314107ac64af770bf7fb360aefc6 /arch/arm/kernel/process.c
parentbab2d8c6020e1d7521cb6c4939f72b061ce947bc (diff)
parent61b80086a525c8a6081257ae40da5dee2bcaee16 (diff)
downloadop-kernel-dev-56c10bf82c10588b743e75a13a7949e11b9fc942.zip
op-kernel-dev-56c10bf82c10588b743e75a13a7949e11b9fc942.tar.gz
Merge branch 'for-armsoc' of git://git.linaro.org/people/rmk/linux-arm
Pull #1 ARM updates from Russell King: "This one covers stuff which Arnd is waiting for me to push, as this is shared between both our trees and probably other trees elsewhere. Essentially, this contains: - AMBA primecell device initializer updates - mostly shrinking the size of the device declarations in platform code to something more reasonable. - Getting rid of the NO_IRQ crap from AMBA primecell stuff. - Nicolas' idle cleanups. This in combination with the restart cleanups from the last merge window results in a great many mach/system.h files being deleted." Yay: ~80 files, ~2000 lines deleted. * 'for-armsoc' of git://git.linaro.org/people/rmk/linux-arm: (60 commits) ARM: remove disable_fiq and arch_ret_to_user macros ARM: make entry-macro.S depend on !MULTI_IRQ_HANDLER ARM: rpc: make default fiq handler run-time installed ARM: make arch_ret_to_user macro optional ARM: amba: samsung: use common amba device initializers ARM: amba: spear: use common amba device initializers ARM: amba: nomadik: use common amba device initializers ARM: amba: u300: use common amba device initializers ARM: amba: lpc32xx: use common amba device initializers ARM: amba: netx: use common amba device initializers ARM: amba: bcmring: use common amba device initializers ARM: amba: ep93xx: use common amba device initializers ARM: amba: omap2: use common amba device initializers ARM: amba: integrator: use common amba device initializers ARM: amba: realview: get rid of private platform amba_device initializer ARM: amba: versatile: get rid of private platform amba_device initializer ARM: amba: vexpress: get rid of private platform amba_device initializer ARM: amba: provide common initializers for static amba devices ARM: amba: make use of -1 IRQs warn ARM: amba: u300: get rid of NO_IRQ initializers ...
Diffstat (limited to 'arch/arm/kernel/process.c')
-rw-r--r--arch/arm/kernel/process.c27
1 files changed, 16 insertions, 11 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 219e4ef..d3eca45 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -61,8 +61,6 @@ extern void setup_mm_for_reboot(void);
static volatile int hlt_counter;
-#include <mach/system.h>
-
void disable_hlt(void)
{
hlt_counter++;
@@ -181,13 +179,17 @@ void cpu_idle_wait(void)
EXPORT_SYMBOL_GPL(cpu_idle_wait);
/*
- * This is our default idle handler. We need to disable
- * interrupts here to ensure we don't miss a wakeup call.
+ * This is our default idle handler.
*/
+
+void (*arm_pm_idle)(void);
+
static void default_idle(void)
{
- if (!need_resched())
- arch_idle();
+ if (arm_pm_idle)
+ arm_pm_idle();
+ else
+ cpu_do_idle();
local_irq_enable();
}
@@ -215,6 +217,10 @@ void cpu_idle(void)
cpu_die();
#endif
+ /*
+ * We need to disable interrupts here
+ * to ensure we don't miss a wakeup call.
+ */
local_irq_disable();
#ifdef CONFIG_PL310_ERRATA_769419
wmb();
@@ -222,19 +228,18 @@ void cpu_idle(void)
if (hlt_counter) {
local_irq_enable();
cpu_relax();
- } else {
+ } else if (!need_resched()) {
stop_critical_timings();
if (cpuidle_idle_call())
pm_idle();
start_critical_timings();
/*
- * This will eventually be removed - pm_idle
- * functions should always return with IRQs
- * enabled.
+ * pm_idle functions must always
+ * return with IRQs enabled.
*/
WARN_ON(irqs_disabled());
+ } else
local_irq_enable();
- }
}
leds_event(led_idle_end);
rcu_idle_exit();
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