From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760840Ab2J2UnA (ORCPT ); Mon, 29 Oct 2012 16:43:00 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:2176 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757911Ab2J2Uiy (ORCPT ); Mon, 29 Oct 2012 16:38:54 -0400 X-Authority-Analysis: v=2.0 cv=dvhZ+ic4 c=1 sm=0 a=rXTBtCOcEpjy1lPqhTCpEQ==:17 a=mNMOxpOpBa8A:10 a=Ciwy3NGCPMMA:10 a=RWpg1lxhCVQA:10 a=5SG0PmZfjMsA:10 a=bbbx4UPp9XUA:10 a=meVymXHHAAAA:8 a=7auIIfhY5R8A:10 a=pGLkceISAAAA:8 a=VwQbUJbxAAAA:8 a=Z4Rwk6OoAAAA:8 a=20KFwNOVAAAA:8 a=9AzMRrQhAAAA:8 a=NufY4J3AAAAA:8 a=KKAkSRfTAAAA:8 a=JfrnYn6hAAAA:8 a=ftUzEednAAAA:8 a=sozttTNsAAAA:8 a=EUspDBNiAAAA:8 a=VnNF1IyMAAAA:8 a=fh4mg5NFAAAA:8 a=3_9Lwwd_ORZrDnuE1SEA:9 a=MSl-tDqOz04A:10 a=LI9Vle30uBYA:10 a=jbrJJM5MRmoA:10 a=jEp0ucaQiEUA:10 a=SxxB86fLhQ4A:10 a=re9sYKne76oA:10 a=WwgC8nHKvroA:10 a=3Rfx1nUSh_UA:10 a=QwxQZocgbLcA:10 a=x2szoZtqnggA:10 a=IG2fH9E8heMA:10 a=Im-eZXwrtqoA:10 a=jeBq3FmKZ4MA:10 a=Zh68SRI7RUMA:10 a=rXTBtCOcEpjy1lPqhTCpEQ==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.67.115.198 Message-Id: <20121029203849.246231106@goodmis.org> User-Agent: quilt/0.60-1 Date: Mon, 29 Oct 2012 16:27:29 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Andrew Morton , Thomas Gleixner , Peter Zijlstra , Clark Williams , Frederic Weisbecker , Li Zefan , Ingo Molnar , "Paul E. McKenney" , Mike Galbraith , Alessio Igor Bogani , Avi Kivity , Chris Metcalf , Christoph Lameter , Daniel Lezcano , Geoff Levand , Gilad Ben Yossef , Hakan Akkan , Kevin Hilman , Max Krasnyansky , Stephen Hemminger , Sven-Thorsten Dietrich Subject: [PATCH 18/32] nohz/cpuset: Flush cputimes for getrusage() and times() syscalls References: <20121029202711.062749374@goodmis.org> Content-Disposition: inline; filename=0018-nohz-cpuset-Flush-cputimes-for-getrusage-and-times-s.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Frederic Weisbecker Both syscalls need to iterate through the thread group to get the cputimes. As some threads of the group may be running on nohz cpuset, we need to flush the cputimes there. Signed-off-by: Frederic Weisbecker Cc: Alessio Igor Bogani Cc: Andrew Morton Cc: Avi Kivity Cc: Chris Metcalf Cc: Christoph Lameter Cc: Daniel Lezcano Cc: Geoff Levand Cc: Gilad Ben Yossef Cc: Hakan Akkan Cc: Ingo Molnar Cc: Kevin Hilman Cc: Max Krasnyansky Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Stephen Hemminger Cc: Steven Rostedt Cc: Sven-Thorsten Dietrich Cc: Thomas Gleixner --- kernel/sys.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/kernel/sys.c b/kernel/sys.c index e6e0ece..b57ea9a 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -47,6 +47,7 @@ #include #include #include +#include #include /* Move somewhere else to avoid recompiling? */ @@ -1045,6 +1046,8 @@ void do_sys_times(struct tms *tms) { cputime_t tgutime, tgstime, cutime, cstime; + cpuset_nohz_flush_cputimes(); + spin_lock_irq(¤t->sighand->siglock); thread_group_times(current, &tgutime, &tgstime); cutime = current->signal->cutime; @@ -1710,6 +1713,9 @@ static void k_getrusage(struct task_struct *p, int who, struct rusage *r) goto out; } + /* For thread_group_times */ + cpuset_nohz_flush_cputimes(); + if (!lock_task_sighand(p, &flags)) return; -- 1.7.10.4