From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752157AbbJNGpq (ORCPT ); Wed, 14 Oct 2015 02:45:46 -0400 Received: from mail-wi0-f181.google.com ([209.85.212.181]:34788 "EHLO mail-wi0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750817AbbJNGpk (ORCPT ); Wed, 14 Oct 2015 02:45:40 -0400 Message-ID: <561DFA11.9040108@gmail.com> Date: Wed, 14 Oct 2015 08:45:37 +0200 From: "Michael Kerrisk (man-pages)" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Vince Weaver CC: mtk.manpages@gmail.com, linux-man@vger.kernel.org, linux-kernel@vger.kernel.org, Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Stephane Eranian , Alexander Shishkin , Borislav Petkov , Frederic Weisbecker , "H. Peter Anvin" , Kaixu Xia , Linus Torvalds , Mike Galbraith , Robert Richter , Thomas Gleixner , adrian.hunter@intel.com, kan.liang@intel.com, markus.t.metzger@intel.com, mathieu.poirier@linaro.org Subject: Re: [patch 09/11] perf_event_open.2: 4.1 add PERF_RECORD_ITRACE_START References: In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/23/2015 07:15 PM, Vince Weaver wrote: > > > This manpage patch relates to the addition of the PERF_RECORD_ITRACE_START > record type in the following commit: Thanks, Vince. Applied. Cheers, Michael > commit ec0d7729bbaed4b9d2d3fada693278e13a3d1368 > Author: Alexander Shishkin > > perf: Add ITRACE_START record to indicate that tracing has started > > Signed-off-by: Alexander Shishkin > Signed-off-by: Peter Zijlstra (Intel) > Cc: Borislav Petkov > Cc: Frederic Weisbecker > Cc: H. Peter Anvin > Cc: Kaixu Xia > Cc: Linus Torvalds > Cc: Mike Galbraith > Cc: Paul Mackerras > Cc: Robert Richter > Cc: Stephane Eranian > Cc: Thomas Gleixner > Cc: acme@infradead.org > Cc: adrian.hunter@intel.com > Cc: kan.liang@intel.com > Cc: markus.t.metzger@intel.com > Cc: mathieu.poirier@linaro.org > Link: http://lkml.kernel.org/r/1421237903-181015-15-git-send-email-alexander.shishkin@linux.intel.com > Signed-off-by: Ingo Molnar > > > Signed-off-by: Vince Weaver > > diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2 > index 19c5c23..8ef9ec6 100644 > --- a/man2/perf_event_open.2 > +++ b/man2/perf_event_open.2 > @@ -2505,6 +2505,29 @@ buffer size. > if set then the data returned has overwritten previous data. > .RE > .RE > +.TP > +.BR PERF_RECORD_ITRACE_START " (since Linux 4.1)" > +\" ec0d7729bbaed4b9d2d3fada693278e13a3d1368 > +This record indicates which process has initiated an instruction > +trace event, allowing tools to properly correlate the instruction > +addresses in the AUX buffer with the proper executable. > + > +.in +4n > +.nf > +struct { > + struct perf_event_header header; > + u32 pid; > + u32 tid; > +}; > +.fi > +.RS > +.TP > +.I pid > +process id of the thread starting an instruction trace. > +.TP > +.I tid > +thread id of the thread starting an instruction trace. > +.RE > .RE > .SS Overflow handling > Events can be set to notify when a threshold is crossed, > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/