linux-kernel - [PATCH v2 0/3] Add a tracepoint for BPF perf sampling

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Date:	Wed,  3 Aug 2016 02:47:46 +0000
From:	Brendan Gregg <bgregg@...flix.com>
To:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org, Alexei Starovoitov <ast@...nel.org>,
	Wang Nan <wangnan0@...wei.com>,
	Brendan Gregg <bgregg@...flix.com>
Subject: [PATCH v2 0/3] Add a tracepoint for BPF perf sampling

This patchset adds a tracepoint for perf sampling, perf:perf_hrtimer, and
includes a complete example in samples/bpf for using it to frequency
count sampled instruction pointers in a BPF map.

Signed-off-by: Brendan Gregg <bgregg@...flix.com>
---
Changes in v2:
- added samples/bpf/sampleip* example for perf:perf_hrtimer
- added bpf-output to perf script usage message

Brendan Gregg (3):
  perf/core: Add a tracepoint for perf sampling
  samples/bpf: Add a sampling BPF example
  perf script: add bpf-output field to usage message

 include/trace/events/perf.h              |  29 +++++
 kernel/events/core.c                     |   5 +
 samples/bpf/Makefile                     |   4 +
 samples/bpf/sampleip_kern.c              |  48 ++++++++
 samples/bpf/sampleip_user.c              | 189 +++++++++++++++++++++++++++++++
 tools/perf/Documentation/perf-script.txt |   4 +-
 tools/perf/builtin-script.c              |   2 +-
 7 files changed, 278 insertions(+), 3 deletions(-)
 create mode 100644 include/trace/events/perf.h
 create mode 100644 samples/bpf/sampleip_kern.c
 create mode 100644 samples/bpf/sampleip_user.c

-- 
2.7.4