linux-kernel - [GIT PULL 00/10] perf/core improvements and fixes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1464212061-7222-1-git-send-email-acme@kernel.org>
Date:	Wed, 25 May 2016 18:34:11 -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>,
	Andi Kleen <ak@...ux.intel.com>,
	Brendan Gregg <brendan.d.gregg@...il.com>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	He Kuang <hekuang@...wei.com>, Jiri Olsa <jolsa@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Milian Wolff <milian.wolff@...b.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>, pi3orama@....com,
	Stephane Eranian <eranian@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Vince Weaver <vincent.weaver@...ne.edu>,
	Wang Nan <wangnan0@...wei.com>, Zefan Li <lizefan@...wei.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [GIT PULL 00/10] perf/core improvements and fixes

Hi Ingo,

	Please consider pulling,

- Arnaldo

The following changes since commit 275ae411e56f8f900fa364da29c4706f9af4e1f3:

  perf/x86/intel/rapl: Fix pmus free during cleanup (2016-05-25 10:56:43 +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-20160525

for you to fetch changes up to 83e1e314baf9a1424bf2f50953ed7d50612763c4:

  tools: Pass arg to fdarray__filter's call back function (2016-05-25 17:27:25 -0300)

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

User visible/kernel ABI:

- Per event callchain limit: Recently we introduced a sysctl to tune the
  max-stack for all events for which callchains were requested:

  $ sysctl kernel.perf_event_max_stack
  kernel.perf_event_max_stack = 127

  Now this patch introduces a way to configure this per event, i.e. this
  becomes possible:

  $ perf record -e sched:*/max-stack=2/ -e block:*/max-stack=10/ -a

  allowing finer tuning of how much buffer space callchains use.

  This uses an u16 from the reserved space at the end, leaving another
  u16 for future use.

  There has been interest in even finer tuning, namely to control the
  max stack for kernel and userspace callchains separately. Further
  discussion is needed, we may for instance use the remaining u16 for
  that and when it is present, assume that the sample_max_stack introduced
  in this patch applies for the kernel, and the u16 left is used for
  limiting the userspace callchain. (Arnaldo Carvalho de Melo)

- Fix kptr_restrict=2 related 'perf record' segfault (Wang Nan)

Infrastructure;

- Adopt get_main_thread from db-export.c (Andi Kleen)

- More prep work for backward ring buffer support (Wang Nan)

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

----------------------------------------------------------------
Andi Kleen (1):
      perf thread: Adopt get_main_thread from db-export.c

Arnaldo Carvalho de Melo (2):
      perf core: Per event callchain limit
      perf tools: Per event max-stack settings

Wang Nan (7):
      perf symbols: Check kptr_restrict for root
      perf record: Fix crash when kptr is restricted
      perf record: Robustify perf_event__synth_time_conv()
      perf evlist: Don't poll and mmap overwritable events
      perf evlist: Check 'base' pointer before checking refcnt when put a mmap
      perf evlist: Choose correct reading direction according to evlist->backward
      tools: Pass arg to fdarray__filter's call back function

 include/linux/perf_event.h      |  2 +-
 include/uapi/linux/perf_event.h |  6 +++++-
 kernel/bpf/stackmap.c           |  2 +-
 kernel/events/callchain.c       | 14 ++++++++++++--
 kernel/events/core.c            |  5 ++++-
 tools/lib/api/fd/array.c        |  5 +++--
 tools/lib/api/fd/array.h        |  3 ++-
 tools/perf/arch/x86/util/tsc.c  |  2 ++
 tools/perf/builtin-record.c     |  9 ++++++++-
 tools/perf/tests/fdarray.c      |  8 ++++----
 tools/perf/util/callchain.h     |  1 +
 tools/perf/util/db-export.c     | 13 +------------
 tools/perf/util/event.c         |  2 ++
 tools/perf/util/evlist.c        | 43 ++++++++++++++++++++++++++++++++---------
 tools/perf/util/evlist.h        |  2 ++
 tools/perf/util/evsel.c         | 16 +++++++++++++--
 tools/perf/util/evsel.h         |  2 ++
 tools/perf/util/parse-events.c  |  8 ++++++++
 tools/perf/util/parse-events.h  |  1 +
 tools/perf/util/parse-events.l  |  1 +
 tools/perf/util/session.c       |  2 ++
 tools/perf/util/symbol.c        | 16 +++++++--------
 tools/perf/util/thread.c        | 11 +++++++++++
 tools/perf/util/thread.h        |  2 ++
 24 files changed, 131 insertions(+), 45 deletions(-)