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authorWu Zhangjin <wuzhangjin@gmail.com>2010-07-24 09:22:14 +0800
committerRalf Baechle <ralf@linux-mips.org>2010-08-05 13:26:24 +0100
commitde3bc0e7ba5e89d63cb2dbac4e49a5c4b18669b5 (patch)
tree16813f3d063da6c8d8fdbe47b574b4067d048579 /arch/mips/loongson
parentb8c7428af023c4cc37b8651e309713c1f4d9a18e (diff)
downloadop-kernel-dev-de3bc0e7ba5e89d63cb2dbac4e49a5c4b18669b5.zip
op-kernel-dev-de3bc0e7ba5e89d63cb2dbac4e49a5c4b18669b5.tar.gz
MIPS: Loongson: Oprofile: add a new do_perfcnt_IRQ()
On FuLoong-2F IP6 is shared by the performance counter overflow interrupt and the Bonito northbridge interrupt. To reduce overhead only call do_IRQ() when oprofile is enabled to reduce overhead. This patch adds an inline function do_perfcnt_IRQ() to hide the #if's , which can be shared by the other Loongson machines, i.e. gdium. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1492/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/loongson')
-rw-r--r--arch/mips/loongson/fuloong-2e/irq.c2
-rw-r--r--arch/mips/loongson/lemote-2f/irq.c4
2 files changed, 2 insertions, 4 deletions
diff --git a/arch/mips/loongson/fuloong-2e/irq.c b/arch/mips/loongson/fuloong-2e/irq.c
index 99e08c3..d61a042 100644
--- a/arch/mips/loongson/fuloong-2e/irq.c
+++ b/arch/mips/loongson/fuloong-2e/irq.c
@@ -30,7 +30,7 @@ asmlinkage void mach_irq_dispatch(unsigned int pending)
if (pending & CAUSEF_IP7)
do_IRQ(MIPS_CPU_IRQ_BASE + 7);
else if (pending & CAUSEF_IP6) /* perf counter loverflow */
- do_IRQ(LOONGSON2_PERFCNT_IRQ);
+ do_perfcnt_IRQ();
else if (pending & CAUSEF_IP5)
i8259_irqdispatch();
else if (pending & CAUSEF_IP2)
diff --git a/arch/mips/loongson/lemote-2f/irq.c b/arch/mips/loongson/lemote-2f/irq.c
index c6db7e7..71347d7 100644
--- a/arch/mips/loongson/lemote-2f/irq.c
+++ b/arch/mips/loongson/lemote-2f/irq.c
@@ -79,9 +79,7 @@ void mach_irq_dispatch(unsigned int pending)
if (pending & CAUSEF_IP7)
do_IRQ(LOONGSON_TIMER_IRQ);
else if (pending & CAUSEF_IP6) { /* North Bridge, Perf counter */
-#if defined(CONFIG_OPROFILE) || defined(CONFIG_OPROFILE_MODULE)
- do_IRQ(LOONGSON2_PERFCNT_IRQ);
-#endif
+ do_perfcnt_IRQ();
bonito_irqdispatch();
} else if (pending & CAUSEF_IP3) /* CPU UART */
do_IRQ(LOONGSON_UART_IRQ);
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