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| author | Robert Schöne <robert.schoene@tu-dresden.de> | 2010-06-14 15:37:20 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-06-18 13:35:10 +0400 |
| commit | c882e0feb937af4e5b991cbd1c81536f37053e86 (patch) | |
| tree | 9484ed7de5de761441b3e5128efadf4674dbbd1a /arch/x86/kernel/process_32.c | |
| parent | 646b1db4956ba8bf748b835b5eba211133d91c2e (diff) | |
| download | linux-c882e0feb937af4e5b991cbd1c81536f37053e86.tar.xz | |
x86, perf: Add power_end event to process_*.c cpu_idle routine
Systems using the idle thread from process_32.c and process_64.c
do not generate power_end events which could be traced using
perf. This patch adds the event generation for such systems.
Signed-off-by: Robert Schoene <robert.schoene@tu-dresden.de>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1276515440.5441.45.camel@localhost>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/process_32.c')
| -rw-r--r-- | arch/x86/kernel/process_32.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c index 8d128783af47..96586c3cbbbf 100644 --- a/arch/x86/kernel/process_32.c +++ b/arch/x86/kernel/process_32.c @@ -57,6 +57,8 @@ #include <asm/syscalls.h> #include <asm/debugreg.h> +#include <trace/events/power.h> + asmlinkage void ret_from_fork(void) __asm__("ret_from_fork"); /* @@ -111,6 +113,8 @@ void cpu_idle(void) stop_critical_timings(); pm_idle(); start_critical_timings(); + + trace_power_end(smp_processor_id()); } tick_nohz_restart_sched_tick(); preempt_enable_no_resched(); |