Messages in this thread Patch in this message | | | From | Jisheng Zhang <> | Subject | [PATCH] arm64: add cpu_idle tracepoints to arch_cpu_idle | Date | Wed, 16 Sep 2015 22:23:21 +0800 |
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Currently, if cpuidle is disabled or not supported, powertop reports zero wakeups and zero events. This is due to the cpu_idle tracepoints are missing.
This patch is to make cpu_idle tracepoints always available even if cpuidle is disabled or not supported.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com> --- arch/arm64/kernel/process.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index 223b093..f75b540 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -44,6 +44,7 @@ #include <linux/hw_breakpoint.h> #include <linux/personality.h> #include <linux/notifier.h> +#include <trace/events/power.h> #include <asm/compat.h> #include <asm/cacheflush.h> @@ -75,8 +76,10 @@ void arch_cpu_idle(void) * This should do all the clock switching and wait for interrupt * tricks */ + trace_cpu_idle_rcuidle(1, smp_processor_id()); cpu_do_idle(); local_irq_enable(); + trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, smp_processor_id()); } #ifdef CONFIG_HOTPLUG_CPU -- 2.5.1
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