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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@linux.intel.com>

	perf: Add ITRACE_START record to indicate that tracing has started

	Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
	Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
	Cc: Borislav Petkov <bp@alien8.de>
	Cc: Frederic Weisbecker <fweisbec@gmail.com>
	Cc: H. Peter Anvin <hpa@zytor.com>
	Cc: Kaixu Xia <kaixu.xia@linaro.org>
	Cc: Linus Torvalds <torvalds@linux-foundation.org>
	Cc: Mike Galbraith <efault@gmx.de>
	Cc: Paul Mackerras <paulus@samba.org>
	Cc: Robert Richter <rric@kernel.org>
	Cc: Stephane Eranian <eranian@google.com>
	Cc: Thomas Gleixner <tglx@linutronix.de>
	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 <mingo@kernel.org>

Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Vince Weaver 2015-07-23 13:15:18 -04:00 committed by Michael Kerrisk
parent cdc52f4a30
commit 6932aac3d2
1 changed files with 23 additions and 0 deletions
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23
man2/perf_event_open.2
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@ -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,