diff options
| author |   Sandeep Tripathy <sandeep.tripathy@linaro.org> | 2014-07-02 15:00:58 +0530 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-07-09 15:45:23 +0200 |
| commit | 30fe6884021b9fa0124609e898a6341be188eb44 (patch) | |
| tree | f8c7edee62a0c1b01622ccbcf1e166b368822c3d /drivers/cpuidle | |
| parent | Linux 3.16-rc4 (diff) | |
| download | linux-dev-30fe6884021b9fa0124609e898a6341be188eb44.tar.xz linux-dev-30fe6884021b9fa0124609e898a6341be188eb44.zip | |
cpuidle: move idle traces to cpuidle_enter_state()
idle_exit event is the first event after a core exits
idle state. So this should be traced before local irq
is ebabled. Likewise idle_entry is the last event before
a core enters idle state. This will ease visualising the
cpu idle state from kernel traces.
Signed-off-by: Sandeep Tripathy <sandeep.tripathy@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
[rjw: Subject, rebase]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/cpuidle.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index cb7019977c50..ee9df5e3f5eb 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -119,11 +119,13 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv, ktime_t time_start, time_end; s64 diff; + trace_cpu_idle_rcuidle(index, dev->cpu); time_start = ktime_get(); entered_state = target_state->enter(dev, drv, index); time_end = ktime_get(); + trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, dev->cpu); if (!cpuidle_state_is_coupled(dev, drv, entered_state)) local_irq_enable(); |