linux-kernel - [patch 09/11] perf_event_open.2: 4.1 add PERF_RECORD_ITRACE

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Message-ID: <alpine.DEB.2.20.1507231314400.3742@vincent-weaver-1.umelst.maine.edu>
Date:	Thu, 23 Jul 2015 13:15:18 -0400 (EDT)
From:	Vince Weaver <vincent.weaver@...ne.edu>
To:	"Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
cc:	linux-man@...r.kernel.org, linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Stephane Eranian <eranian@...gle.com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Borislav Petkov <bp@...en8.de>,
	Frederic Weisbecker <fweisbec@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>, Kaixu Xia <kaixu.xia@...aro.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Mike Galbraith <efault@....de>,
	Robert Richter <rric@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>, adrian.hunter@...el.com,
	kan.liang@...el.com, markus.t.metzger@...el.com,
	mathieu.poirier@...aro.org, Vince Weaver <vincent.weaver@...ne.edu>
Subject: [patch 09/11] perf_event_open.2: 4.1 add PERF_RECORD_ITRACE_START



This manpage patch relates to the addition of the PERF_RECORD_ITRACE_START
record type in the following commit:

	commit ec0d7729bbaed4b9d2d3fada693278e13a3d1368
	Author: Alexander Shishkin <alexander.shishkin@...ux.intel.com>

	perf: Add ITRACE_START record to indicate that tracing has started

	Signed-off-by: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
	Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
	Cc: Borislav Petkov <bp@...en8.de>
	Cc: Frederic Weisbecker <fweisbec@...il.com>
	Cc: H. Peter Anvin <hpa@...or.com>
	Cc: Kaixu Xia <kaixu.xia@...aro.org>
	Cc: Linus Torvalds <torvalds@...ux-foundation.org>
	Cc: Mike Galbraith <efault@....de>
	Cc: Paul Mackerras <paulus@...ba.org>
	Cc: Robert Richter <rric@...nel.org>
	Cc: Stephane Eranian <eranian@...gle.com>
	Cc: Thomas Gleixner <tglx@...utronix.de>
	Cc: acme@...radead.org
	Cc: adrian.hunter@...el.com
	Cc: kan.liang@...el.com
	Cc: markus.t.metzger@...el.com
	Cc: mathieu.poirier@...aro.org
	Link: http://lkml.kernel.org/r/1421237903-181015-15-git-send-email-alexander.shishkin@linux.intel.com
	Signed-off-by: Ingo Molnar <mingo@...nel.org>


Signed-off-by: Vince Weaver <vincent.weaver@...ne.edu>

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,
--
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