linux-kernel - [GIT PULL 00/13] perf/core improvements and fixes

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Date:	Fri, 29 Apr 2016 11:57:28 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Alexei Starovoitov <ast@...nel.org>,
	Ananth N Mavinakayanahalli <ananth@...ux.vnet.ibm.com>,
	Brendan Gregg <brendan.d.gregg@...il.com>,
	David Ahern <dsahern@...il.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	He Kuang <hekuang@...wei.com>,
	Hemant Kumar <hemant@...ux.vnet.ibm.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Milian Wolff <milian.wolff@...b.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>, pi3orama@....com,
	Vaishali Thakkar <vaishali.thakkar@...cle.com>,
	Wang Nan <wangnan0@...wei.com>, Zefan Li <lizefan@...wei.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [GIT PULL 00/13] perf/core improvements and fixes

Hi Ingo,

	Please consider pulling, tested on:

  [root@...et ~]# docker-perf-build-test
  alldeps-fedora-rawhide: Ok
  alldeps-ubuntu-14.04: Ok
  alldeps-ubuntu-16.04: Ok        <------------- New image
  alldeps-fedora-20: Ok
  alldeps-ubuntu-12.04: Ok
  minimal-debian-experimental-x-mips64: Ok
  minimal-debian-experimental-x-mips64el: Ok
  minimal-debian-experimental-x-mipsel: Ok
  minimal-ubuntu-x-arm: Ok
  minimal-ubuntu-x-arm64: Ok
  minimal-ubuntu-x-ppc64: Ok
  minimal-ubuntu-x-ppc64el: Ok
  alldeps-debian: Ok
  alldeps-mageia: Ok
  alldeps-rhel7: Ok
  alldeps-centos: Ok
  alldeps-opensuse: Ok
  [root@...et ~]#

- Arnaldo

The following changes since commit 3521ba1cc351e80488c3f85748c92c3853b75818:

  powercap, perf/x86/intel/rapl: Add PSys support (2016-04-28 10:39:19 +0200)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-20160429

for you to fetch changes up to ca7ce82a280a65c377c24c95c29b1dec6e80b428:

  perf tests: Do not use sizeof on pointer type (2016-04-28 15:37:52 -0300)

----------------------------------------------------------------
perf/core improvements and fixes:

User visible:

- Allow generate timestamped suffixed multiple perf.data files upon receiving
  SIGUSR2 in 'perf record', to slice a long running monitoring session, allowing
  to dump uninteresting sessions (Wang Nan)

- Handle ENOMEM for perf_event_max_stack + PERF_SAMPLE_CALLCHAIN
  in perf_evsel__open_strerror(), showing a more informative
  message when the request call stack depth can't be allocated by
  the kernel (Arnaldo Carvalho de Melo)

Infrastructure:

- Use strbuf for making strings in 'perf probe' (Masami Hiramatsu)

- Do not use sizeof on pointer type, not a problem since its a pointer to
  pointer, fix none the less. Found by Coccinelle (Vaishali Thakkar)

Cleanups:

- Fix for Coverity found issues in the bpf feature build test (Florian Fainelli)

Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>

----------------------------------------------------------------
Arnaldo Carvalho de Melo (3):
      perf evsel: Handle ENOMEM for perf_event_max_stack + PERF_SAMPLE_CALLCHAIN
      perf evsel: Remove two extraneous ending newlines in open_strerror()
      perf trace: Move msg_flags beautifier to tools/perf/trace/beauty/

Florian Fainelli (2):
      bpf tools: Remove expression with no effect
      bpf tools: Fix syscall argument

Masami Hiramatsu (1):
      perf probe: Use strbuf for making strings

Vaishali Thakkar (1):
      perf tests: Do not use sizeof on pointer type

Wang Nan (6):
      perf tools: Introduce trigger class
      perf tools: Derive trigger class from auxtrace_snapshot
      perf record: Split output into multiple files via '--switch-output'
      perf record: Force enable --timestamp-filename when --switch-output is provided
      perf record: Disable buildid cache options by default in switch output mode
      perf record: Generate tracking events for process forked by perf

 tools/build/feature/test-bpf.c           |   3 +-
 tools/perf/Documentation/perf-record.txt |  13 ++
 tools/perf/builtin-record.c              | 173 +++++++++++++++-------
 tools/perf/builtin-trace.c               |  62 +-------
 tools/perf/tests/dso-data.c              |   2 +-
 tools/perf/trace/beauty/msg_flags.c      |  62 ++++++++
 tools/perf/util/evsel.c                  |  12 +-
 tools/perf/util/probe-event.c            | 246 +++++++++++--------------------
 tools/perf/util/probe-event.h            |   2 +-
 tools/perf/util/probe-finder.c           |  14 +-
 tools/perf/util/trigger.h                |  94 ++++++++++++
 11 files changed, 393 insertions(+), 290 deletions(-)
 create mode 100644 tools/perf/trace/beauty/msg_flags.c
 create mode 100644 tools/perf/util/trigger.h