linux-kernel - [PATCH v1 0/3] perf: add indirect jump filtering support

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Date:	Thu, 14 May 2015 23:09:57 +0200
From:	Stephane Eranian <eranian@...gle.com>
To:	linux-kernel@...r.kernel.org
Cc:	acme@...hat.com, peterz@...radead.org, mingo@...e.hu,
	ak@...ux.intel.com, jolsa@...hat.com, namhyung@...nel.org,
	kan.liang@...el.com, dsahern@...il.com
Subject: [PATCH v1 0/3] perf: add indirect jump filtering support

This short patch series adds a new filter to the branch stack
sampling feature. The new filter enables sampling only indirect
jumps. For each the source and target are captured.

The new branch_sample_type flag is: PERF_SAMPLE_BRANCH_IND_JUMP 

The series provides full support in the perf record tool:

  $ perf record -j ind_jmp ...

On Intel x86 processors, the filter is implemented using the
LBR hw filter.

This filter is useful to study targets of indirect jumps.

Stephane Eranian (3):
  perf: add new PERF_SAMPLE_BRANCH_IND_JUMP branch sample type
  perf/x86: add support for PERF_SAMPLE_BRANCH_IND_JUMP
  perf record: add support for sampling indirect jumps

 arch/x86/kernel/cpu/perf_event_intel_lbr.c | 10 +++++++++-
 include/uapi/linux/perf_event.h            |  2 ++
 tools/perf/builtin-record.c                |  1 +
 3 files changed, 12 insertions(+), 1 deletion(-)

-- 
1.9.1

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