linux-kernel - Re: [patch 01/11] perf_event_open.2: 4.1 PERF_SAMPLE_BRANCH_CALL

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Date:	Wed, 14 Oct 2015 08:26:08 +0200
From:	"Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
To:	Vince Weaver <vincent.weaver@...ne.edu>
CC:	mtk.manpages@...il.com, 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>,
	Jiri Olsa <jolsa@...hat.com>,
	Andy Lutomirski <luto@...capital.net>,
	Kan Liang <kan.liang@...el.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [patch 01/11] perf_event_open.2: 4.1 PERF_SAMPLE_BRANCH_CALL_STACK

On 07/23/2015 07:08 PM, Vince Weaver wrote:
> 
> This manpage patch relates to the addition of the 
> PERF_SAMPLE_BRANCH_CALL_STACK functionaliry added in the following
> commit:
> 
> commit 2c44b1936bb3b135a3fac8b3493394d42e51cf70 Author: Peter
> Zijlstra <peterz@...radead.org>
> 
> perf/x86/intel: Expose LBR callstack to user space tooling
> 
> With LBR call stack feature enable, there are three callchain
> options. Enable the 3rd callchain option (LBR callstack) to user
> space tooling.

Thanks, Vince. Applied.

Cheers,

Michael


> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org> Cc: Jiri
> Olsa <jolsa@...hat.com> Cc: Arnaldo Carvalho de Melo
> <acme@...nel.org> Cc: Andy Lutomirski <luto@...capital.net> Cc: Kan
> Liang <kan.liang@...el.com> Cc: Linus Torvalds
> <torvalds@...ux-foundation.org> Cc: Paul Mackerras
> <paulus@...ba.org> Cc: Vince Weaver <vincent.weaver@...ne.edu> Cc:
> linux-api@...r.kernel.org Link:
> http://lkml.kernel.org/r/20141105093759.GQ10501@worktop.programming.kicks-ass.net
>
> 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
> 856ec64..71bfb17 100644 --- a/man2/perf_event_open.2 +++
> b/man2/perf_event_open.2 @@ -1240,6 +1240,11 @@ Branch in
> transactional memory transaction. .BR PERF_SAMPLE_BRANCH_NO_TX "
> (since Linux 3.11)" .\" commit
> 135c5612c460f89657c4698fe2ea753f6f667963 Branch not in transactional
> memory transaction. +.BR PERF_SAMPLE_BRANCH_CALL_STACK " (since Linux
> 4.1)" +.\" commit 2c44b1936bb3b135a3fac8b3493394d42e51cf70 +Branch is
> part of a hardware generated call stack. +This requires hardware
> support, currently only found +on Intel x86 Haswell or newer. .RE
> 
> .TP -- To unsubscribe from this list: send the line "unsubscribe
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> 


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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