From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755769Ab2BGPLL (ORCPT ); Tue, 7 Feb 2012 10:11:11 -0500 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.125]:63574 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755481Ab2BGPKv (ORCPT ); Tue, 7 Feb 2012 10:10:51 -0500 X-Authority-Analysis: v=2.0 cv=HeuWv148 c=1 sm=0 a=ZycB6UtQUfgMyuk2+PxD7w==:17 a=UBy9sU4F98IA:10 a=-I-d5KTFargA:10 a=5SG0PmZfjMsA:10 a=bbbx4UPp9XUA:10 a=20KFwNOVAAAA:8 a=QyXUC8HyAAAA:8 a=VnNF1IyMAAAA:8 a=meVymXHHAAAA:8 a=2zli643jjhjTyJyuCMsA:9 a=jEp0ucaQiEUA:10 a=dGJ0OcVc7YAA:10 a=jeBq3FmKZ4MA:10 a=ZycB6UtQUfgMyuk2+PxD7w==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.67.80.29 Message-Id: <20120207151049.632303467@goodmis.org> User-Agent: quilt/0.50-1 Date: Tue, 07 Feb 2012 09:56:56 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , "Paul E. McKenney" , Rob Herring , Nicolas Pitre , Kevin Hilman , Josh Triplett , Mathieu Desnoyers , Len Brown Subject: [PATCH 3/3][RFC] cpuidle/tracing: Denote the tracepoints as being in rcu_idle_exit() section References: <20120207145653.829892056@goodmis.org> Content-Disposition: inline; filename=0003-cpuidle-tracing-Denote-the-tracepoints-as-being-in-r.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Steven Rostedt 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 Cc: Paul E. McKenney Signed-off-by: Steven Rostedt --- drivers/cpuidle/cpuidle.c | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) 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 */ -- 1.7.8.3