From: Steven Rostedt Date: Tue, 7 Feb 2012 14:46:01 +0000 (-0500) Subject: cpuidle/tracing: Denote the tracepoints as being in rcu_idle_exit() section X-Git-Tag: v3.12-rc1~3124^3~80^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=76027ea863fc02698da536b4970784eed3caa635;p=kernel%2Fkernel-generic.git cpuidle/tracing: Denote the tracepoints as being in rcu_idle_exit() section As the tracepoints in the cpuidle code are called when rcu_idle_exit() is in effect, the _rcuidle() version must be used, otherwise the rcu_read_lock()s that protect the tracepoint will not be honored. Cc: Len Brown Reviewed-by: Josh Triplett Reviewed-by: Paul E. McKenney Signed-off-by: Steven Rostedt --- diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index 59f4261..6588f43 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -94,13 +94,13 @@ int cpuidle_idle_call(void) target_state = &drv->states[next_state]; - trace_power_start(POWER_CSTATE, next_state, dev->cpu); - trace_cpu_idle(next_state, dev->cpu); + trace_power_start_rcuidle(POWER_CSTATE, next_state, dev->cpu); + trace_cpu_idle_rcuidle(next_state, dev->cpu); entered_state = target_state->enter(dev, drv, next_state); - trace_power_end(dev->cpu); - trace_cpu_idle(PWR_EVENT_EXIT, dev->cpu); + trace_power_end_rcuidle(dev->cpu); + trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, dev->cpu); if (entered_state >= 0) { /* Update cpuidle counters */