From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759313Ab2BNDkY (ORCPT ); Mon, 13 Feb 2012 22:40:24 -0500 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.123]:34864 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759156Ab2BNDkK (ORCPT ); Mon, 13 Feb 2012 22:40:10 -0500 X-Authority-Analysis: v=2.0 cv=HeuWv148 c=1 sm=0 a=ZycB6UtQUfgMyuk2+PxD7w==:17 a=UBy9sU4F98IA:10 a=CWtqnKM6Dr4A:10 a=5SG0PmZfjMsA:10 a=bbbx4UPp9XUA:10 a=20KFwNOVAAAA:8 a=QyXUC8HyAAAA:8 a=UPm3pfgAAAAA:8 a=VnNF1IyMAAAA:8 a=meVymXHHAAAA:8 a=2zli643jjhjTyJyuCMsA:9 a=QEXdDO2ut3YA:10 a=jEp0ucaQiEUA:10 a=dGJ0OcVc7YAA:10 a=mOio7EKfaG4A:10 a=jeBq3FmKZ4MA:10 a=3vjraaJA2kyUgIr61wAA:9 a=ZycB6UtQUfgMyuk2+PxD7w==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.67.80.29 Message-Id: <20120214034007.297163721@goodmis.org> User-Agent: quilt/0.50-1 Date: Mon, 13 Feb 2012 22:39:14 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Len Brown , Josh Triplett , "Paul E. McKenney" Subject: [PATCH 5/9] cpuidle/tracing: Denote the tracepoints as being in rcu_idle_exit() section References: <20120214033909.904564921@goodmis.org> Content-Disposition: inline; filename=0005-cpuidle-tracing-Denote-the-tracepoints-as-being-in-r.patch Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="00GvhwF7k39YY" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --00GvhwF7k39YY Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable 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 Reviewed-by: Josh Triplett Reviewed-by: 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) =20 target_state =3D &drv->states[next_state]; =20 - 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); =20 entered_state =3D target_state->enter(dev, drv, next_state); =20 - 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); =20 if (entered_state >=3D 0) { /* Update cpuidle counters */ --=20 1.7.8.3 --00GvhwF7k39YY Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJPOdeXAAoJEIy3vGnGbaoA6RgQAMMsr1ppYXzvujeGy0ZMN10C CYvfhOipJga/bu8SzEX+zYLIsEzoepHDnSCm/CtaSel51rD3JYB103w2crVsvvux TBfgtYI7n4mZfsylNNLNAHNd22I4NAAABzAoX3N7tnHE1Pvwwv1G/+LhzgC1NQo1 7Led6K9vo+0jNBV8u/MnBeuitvIWY+YZNVLvFmcGBosru/VHq+CDNsMUT0Kf4dGa BKpvrT2NNeAwnBHE/crIT57q11CL5Bw5S4GOOACmIOBVQ6CEM5Uow/R7Be6qfc8X jzemwsSbJUJGd8a/Njbvgc7pPhD5TatJoTTqXme/mojDxEROLO78e3PnrhRlqzLr g5bNrxLFNmrMM9hW6zXpj3AZR2Cf2yTHNfZ8AH3rlFaf/pCzB9LzkpmcSNca4Vcg +7rXRSks15Mf7nBeVYx3yATwOJnlwqf/h+Mu+ouqNQUFQOJS7f2c+FJ1ghrl/MAe Jo/JFUF2i6S5oA++CSGz58RrB1m79yjWo3YAwTHDGedlrmm1gZEf9aXLZDvtIWQo PBAbmc6BQ33ZplgsVmKr/qYDw8Zm6e/+M22kwDiEQxd6exVZGDJxgPsB7+COMnPE Xlteko6QAZB5OHP2eVt7FuWBckaSLssSpmyyTZt0iujjDveiKkvDkR271IiBa9Mj 9zKic8uOMkOINRptoeKJ =zMMm -----END PGP SIGNATURE----- --00GvhwF7k39YY--