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>
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index cb70199..ee9df5e 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -119,11 +119,13 @@
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();