[GIT PULL 00/20] perf/core improvements and fixes
From: Arnaldo Carvalho de Melo
Date: Mon Mar 02 2015 - 22:26:26 EST
Hi Ingo,
This one has the thread reference counting, that I tested using 'perf probe':
perf probe -x ~/bin/perf 'thread__delete:4 thread refcnt=thread->refcnt tid=thread->tid'
perf probe -x ~/bin/perf 'thread__get:1 thread refcnt=thread->refcnt tid=thread->tid'
perf probe -x ~/bin/perf 'thread__put:6 thread refcnt=thread->refcnt tid=thread->tid'
perf record -o thread_refcnt.data -g -e probe_perf:thread__put,probe_perf:thread__get_1,probe_perf:thread__delete perf top
with that I checked and in the end the refcount reaches zero and
thread__delete is called, as expected, using 'perf script', looking at the
callchains, etc, did the same for 'perf sched lat' and 'trace' also seems to
work.
David, Namhyung, please holler if you find something fishy with this
thread refcnt stuff, as it is something that is related to previous/current
work by you guys,
Ah, I also merged perf/urgent so that it is buildable in more systems.o
There is also the revert for that is_power_of_2 "simplification" in perf_mmap,
that hasn't made it to perf/urgent nor upstream, its something only in perf/core, sorry
about that one, should have caught that :-\
Please consider pulling,
- Arnaldo
The following changes since commit 33be4ef116511f1079c4c3bf4b5547faf7439301:
Merge 'tip/perf/urgent' into perf/core to pick fixes (2015-03-02 11:45:49 -0300)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo
for you to fetch changes up to ae536acfacb65a4a9858c32b12361e09f84f4157:
perf sched: No need to keep the session around (2015-03-03 00:17:12 -0300)
----------------------------------------------------------------
perf/core improvements and fixes:
User visible:
- Warn if given uprobe event accesses memory on older kernel (Masami Hiramatsu)
- 'perf record' Documentation fixes (Namhyung Kim)
- Report unsupported events properly in 'perf stat' (Suzuki K. Poulose)
Infrastructure:
- Avoid FORK after COMM when synthesizing records for pre-existing threads (Arnaldo Carvalho de Melo)
- Reference count struct thread (Arnaldo Carvalho de Melo)
- No need to keep the session around in 'perf sched', thread refcounting removes that need (Arnaldo Carvalho de Melo)
- Initialize cpu set in pthread_attr_setaffinity_np feature test (Adrian Hunter)
- Only include tsc file for x86 (David Ahern)
- Compare JOBS to 0 after grep (David Ahern)
- Improve feature detection messages (Ingo Molnar)
- Revert "perf: Remove the extra validity check on nr_pages" (Kan Liang)
- Remove bias offset to find probe point by address (Masami Hiramatsu)
- Fix build error on ARCH=i386/x86_64/sparc64 )Namhyung Kim)
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
----------------------------------------------------------------
Adrian Hunter (1):
perf tools: Initialize cpu set in pthread_attr_setaffinity_np feature test
Arnaldo Carvalho de Melo (3):
perf tools: Fix FORK after COMM when synthesizing records for pre-existing threads
perf tools: Reference count struct thread
perf sched: No need to keep the session around
David Ahern (2):
perf tools: Only include tsc file for x86
perf tools: Compare JOBS to 0 after grep
Ingo Molnar (7):
perf tools: Add PERF-FEATURES to the .gitignore file
perf tools: Remove annoying extra message from the features build
perf tools: Improve Python feature detection messages
perf tools: Improve libperl detection message
perf tools: Improve libbfd detection message
perf tools: Improve feature test debuggability
perf tools: Improve 'libbabel' feature check failure message
Kan Liang (1):
Revert "perf: Remove the extra validity check on nr_pages"
Masami Hiramatsu (2):
perf probe: Warn if given uprobe event accesses memory on older kernel
perf probe: Remove bias offset to find probe point by address
Namhyung Kim (3):
perf tools: Fix build error on ARCH=i386/x86_64/sparc64
perf record: Get rid of -l option from Documentation
perf record: Document --group option
Suzuki K. Poulose (1):
perf stat: Report unsupported events properly
kernel/events/core.c | 2 +-
tools/perf/.gitignore | 1 +
tools/perf/Documentation/perf-record.txt | 12 ++++--
tools/perf/Makefile | 2 +-
tools/perf/builtin-sched.c | 26 +++++--------
tools/perf/builtin-stat.c | 5 ++-
tools/perf/builtin-trace.c | 7 +++-
tools/perf/config/Makefile | 17 ++++-----
tools/perf/config/Makefile.arch | 27 +++----------
tools/perf/config/feature-checks/Makefile | 16 ++++----
.../test-pthread-attr-setaffinity-np.c | 4 +-
tools/perf/config/utilities.mak | 3 +-
tools/perf/ui/browsers/hists.c | 6 +--
tools/perf/util/Build | 2 +-
tools/perf/util/build-id.c | 5 ++-
tools/perf/util/event.c | 34 ++++++++++++-----
tools/perf/util/hist.c | 2 +
tools/perf/util/hist.h | 2 +-
tools/perf/util/machine.c | 44 +++++++++++-----------
tools/perf/util/machine.h | 1 -
tools/perf/util/probe-event.c | 23 +++++++++++
tools/perf/util/probe-finder.c | 5 +--
tools/perf/util/session.c | 6 ---
tools/perf/util/thread.c | 14 +++++++
tools/perf/util/thread.h | 13 +++++++
25 files changed, 164 insertions(+), 115 deletions(-)
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