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| author | Jisheng Zhang <jszhang@marvell.com> | 2015-09-16 22:23:21 +0800 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2015-10-19 18:43:41 +0100 |
| commit | 096b3224d5e7239ec3e5033bbc7612ac2d5dec3a (patch) | |
| tree | a18dafbef893697c88f27bac2a694a13d7e52488 /arch | |
| parent | 215399392fe40f33880ea9de49a1ed8ee26edd10 (diff) | |
| download | linux-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.c | 3 |
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 |