Re: [patch 09/11] perf_event_open.2: 4.1 add PERF_RECORD_ITRACE_START

From	"Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [patch 09/11] perf_event_open.2: 4.1 add PERF_RECORD_ITRACE_START
Date	2015-10-14 08:50 +0200
Message-ID	<qjo2R-7kC-7@gated-at.bofh.it> (permalink)
References	<pPsal-4z3-15@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

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 <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>
> 
> 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/
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

Re: [patch 09/11] perf_event_open.2: 4.1 add PERF_RECORD_ITRACE_START "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com> - 2015-10-14 08:50 +0200

csiph-web