linux-kernel - [GIT PULL 0/3] perf/urgent fixes

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Message-Id: <1454519052-14355-1-git-send-email-acme@kernel.org>
Date:	Wed,  3 Feb 2016 14:04:09 -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>,
	Hemant Kumar <hemant@...ux.vnet.ibm.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Josh Poimboeuf <jpoimboe@...hat.com>,
	Mark Wielaard <mjw@...hat.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	"Naveen N . Rao" <naveen.n.rao@...ux.vnet.ibm.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Tong Zhang <ztong@...edu>, Wang Nan <wangnan0@...wei.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [GIT PULL 0/3] perf/urgent fixes

Hi Ingo,

	Please consider pulling,

- Arnaldo

The following changes since commit 28fb8a5b6e233fc384fb27f9f91f811b40ba9cf8:

  Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent (2016-01-30 09:15:49 +0100)

are available in the git repository at:

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

for you to fetch changes up to 270bde1e76f400d81f8d0ab68905a18ee17fa2e8:

  perf probe: Search both .eh_frame and .debug_frame sections for probe location (2016-02-02 13:30:16 -0300)

----------------------------------------------------------------
perf/urgent fixes:

- tracepoint_error() can receive e=NULL, robustify it, fixes a problem noticed
  with a very specific combination: Machine with Intel PT (e.g. Broadwell),
  kernel with no perf_event_attr.context_switch feature (e.g. 4.2) and unreadable
  tracefs (for instance !root users), making the fallback from
  perf_event_attr.context_switch to the sched:sched_switch tracepoint to fail
  reading its info from tracefs, fix it. (Adrian Hunter)

- Fix segfault in intel pt, by making it follow the 'struct thread' lifetime cycle
  checking expectations, noticed for instance, when processing perf.data files with
  Intel PT data using 'perf script' and when exiting 'perf report' (Adrian Hunter)

- Fix CFI usage from .eh_frame and .debug_frame, which sometimes requires that we
  fallback from .eh_frame to .debug_frame in architectures such as PowerPC (Hemant Kumar)

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

----------------------------------------------------------------
Adrian Hunter (2):
      perf tools: tracepoint_error() can receive e=NULL, robustify it
      perf tools: Fix thread lifetime related segfaut in intel_pt

Hemant Kumar (1):
      perf probe: Search both .eh_frame and .debug_frame sections for probe location

 tools/perf/util/intel-pt.c     |  9 ++++++
 tools/perf/util/parse-events.c |  3 ++
 tools/perf/util/probe-finder.c | 62 +++++++++++++++++++++++++-----------------
 tools/perf/util/probe-finder.h |  5 +++-
 4 files changed, 53 insertions(+), 26 deletions(-)