mirror of https://github.com/mkerrisk/man-pages
perf_event_open.2: 4.1 PERF_SAMPLE_BRANCH_CALL_STACK
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> Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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@ -1240,6 +1240,11 @@ Branch in transactional memory transaction.
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.BR PERF_SAMPLE_BRANCH_NO_TX " (since Linux 3.11)"
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.\" commit 135c5612c460f89657c4698fe2ea753f6f667963
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Branch not in transactional memory transaction.
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.BR PERF_SAMPLE_BRANCH_CALL_STACK " (since Linux 4.1)"
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.\" commit 2c44b1936bb3b135a3fac8b3493394d42e51cf70
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Branch is part of a hardware generated call stack.
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This requires hardware support, currently only found
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on Intel x86 Haswell or newer.
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.RE
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.TP
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