Messages in this thread Patch in this message | | | From | Vince Weaver <> | Date | Thu, 23 Jul 2015 13:08:16 -0400 (EDT) | Subject | [patch 01/11] perf_event_open.2: 4.1 PERF_SAMPLE_BRANCH_CALL_STACK |
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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@infradead.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.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Kan Liang <kan.liang@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: linux-api@vger.kernel.org Link: http://lkml.kernel.org/r/20141105093759.GQ10501@worktop.programming.kicks-ass.net 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 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
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