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Message-Id: <1431637800-31061-1-git-send-email-eranian@google.com>
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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