From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934040AbcCRO2T (ORCPT ); Fri, 18 Mar 2016 10:28:19 -0400 Received: from smtprelay0230.hostedemail.com ([216.40.44.230]:41332 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932863AbcCRO2P (ORCPT ); Fri, 18 Mar 2016 10:28:15 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::,RULES_HIT:41:355:379:541:599:800:960:973:982:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1541:1593:1594:1711:1730:1747:1777:1792:2393:2553:2559:2562:2693:2892:3138:3139:3140:3141:3142:3352:3622:3865:3868:3871:5007:6261:7875:7903:10004:10400:10450:10455:10848:10967:11026:11232:11473:11658:11914:12517:12519:12740:13069:13311:13357:13439:14096:14097:14659:14721:19904:19999:21080:30054:30070:30075:30090:30091,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:6,LUA_SUMMARY:none X-HE-Tag: house44_2ac46a26d2657 X-Filterd-Recvd-Size: 2505 Date: Fri, 18 Mar 2016 10:28:12 -0400 From: Steven Rostedt To: Jiri Olsa Cc: lkml , Ingo Molnar , Namhyung Kim , Peter Zijlstra , Arnaldo Carvalho de Melo Subject: Re: [PATCH 2/5] ftrace perf: Move exclude_kernel tracepoint check to init event Message-ID: <20160318102812.04d8bac3@gandalf.local.home> In-Reply-To: <1458138873-1553-3-git-send-email-jolsa@kernel.org> References: <1458138873-1553-1-git-send-email-jolsa@kernel.org> <1458138873-1553-3-git-send-email-jolsa@kernel.org> X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.29; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 16 Mar 2016 15:34:30 +0100 Jiri Olsa wrote: > We suppress events with attr::exclude_kernel set when > the event is generated, so following capture will > give no warning but won't produce any data: > > $ sudo perf record -e sched:sched_switch:u ls > $ sudo /perf script | wc -l > 0 > > Checking the attr::exclude_(kernel|user) at the event > init time and failing right away for tracepoints from > uprobes/kprobes and native ones: > > $ sudo perf record -e sched:sched_switch:u ls > Error: > The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (sched:sched_switch). > /bin/dmesg may provide additional information. > No CONFIG_PERF_EVENTS=y kernel support configured? > > $ sudo perf record -e probe:sys_read:u ls > Error: > The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (probe:sys_read). > /bin/dmesg may provide additional information. > No CONFIG_PERF_EVENTS=y kernel support configured? > > $ ./perf record -e probe_ex:main:k ./ex > Error: > The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (probe_ex:main). > /bin/dmesg may provide additional information. > No CONFIG_PERF_EVENTS=y kernel support configured? > > Acked-by: Namhyung Kim > Signed-off-by: Jiri Olsa Acked-by: Steven Rostedt -- Steve