arm64: add cpu_idle tracepoints to arch_cpu_idle
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>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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 @@
* 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
