From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751835AbeBZWD5 (ORCPT ); Mon, 26 Feb 2018 17:03:57 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:47246 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751932AbeBZWCX (ORCPT ); Mon, 26 Feb 2018 17:02:23 -0500 From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, "Paul E. McKenney" Subject: [PATCH tip/core/rcu 10/12] torture: Adjust rcuperf trace processing to allow for workqueues Date: Mon, 26 Feb 2018 14:02:39 -0800 X-Mailer: git-send-email 2.5.2 In-Reply-To: <20180226220225.GA32136@linux.vnet.ibm.com> References: <20180226220225.GA32136@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18022622-0040-0000-0000-000003FD5C83 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008601; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000254; SDB=6.00995533; UDB=6.00506035; IPR=6.00774861; MB=3.00019751; MTD=3.00000008; XFM=3.00000015; UTC=2018-02-26 22:02:19 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18022622-0041-0000-0000-000007FE6694 Message-Id: <1519682561-510-10-git-send-email-paulmck@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2018-02-26_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1802260276 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The rcuperf event-trace processing assumes that expedited grace periods start and end on the same task, an assumption that was violated by moving expedited grace-period processing to workqueues. This commit removes this now-fallacious assumption from rcuperf's event-trace processing. Signed-off-by: Paul E. McKenney --- .../selftests/rcutorture/bin/kvm-recheck-rcuperf-ftrace.sh | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf-ftrace.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf-ftrace.sh index 963f71289d22..dffb553a7bcc 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf-ftrace.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf-ftrace.sh @@ -39,7 +39,7 @@ sed -e 's/us : / : /' | tr -d '\015' | awk ' $8 == "start" { - if (starttask != "") + if (startseq != "") nlost++; starttask = $1; starttime = $3; @@ -47,17 +47,17 @@ $8 == "start" { } $8 == "end" { - if (starttask == $1 && startseq == $7) { + if (startseq == $7) { curgpdur = $3 - starttime; gptimes[++n] = curgpdur; gptaskcnt[starttask]++; sum += curgpdur; if (curgpdur > 1000) print "Long GP " starttime "us to " $3 "us (" curgpdur "us)"; - starttask = ""; + startseq = ""; } else { # Lost a message or some such, reset. - starttask = ""; + startseq = ""; nlost++; } } -- 2.5.2