From mboxrd@z Thu Jan 1 00:00:00 1970 From: jszhang@marvell.com (Jisheng Zhang) Date: Wed, 16 Sep 2015 22:37:00 +0800 Subject: [PATCH] arm: add cpu_idle tracepoints to arch_cpu_idle Message-ID: <1442414220-7204-1-git-send-email-jszhang@marvell.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- arch/arm/kernel/process.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index f192a2a..aa78e09 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include @@ -66,11 +67,13 @@ void (*arm_pm_idle)(void); void arch_cpu_idle(void) { + trace_cpu_idle_rcuidle(1, smp_processor_id()); if (arm_pm_idle) arm_pm_idle(); else cpu_do_idle(); local_irq_enable(); + trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, smp_processor_id()); } void arch_cpu_idle_prepare(void) -- 2.5.1