summaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
authorJisheng Zhang <jszhang@marvell.com>2015-09-16 22:23:21 +0800
committerCatalin Marinas <catalin.marinas@arm.com>2015-10-19 18:43:41 +0100
commit096b3224d5e7239ec3e5033bbc7612ac2d5dec3a (patch)
treea18dafbef893697c88f27bac2a694a13d7e52488 /arch
parent215399392fe40f33880ea9de49a1ed8ee26edd10 (diff)
downloadlinux-096b3224d5e7239ec3e5033bbc7612ac2d5dec3a.tar.bz2
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/kernel/process.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 223b093c9440..f75b540bc3b4 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