* Arnaldo Carvalho de Melo <a...@kernel.org> wrote:
> Hi Ingo,
>
> Please consider pulling,
>
> - Arnaldo
>
> The following changes since commit 711460514b1c80494f14001bdf30dd70fd401a8f:
>
> Merge tag 'perf-urgent-for-mingo-20160527' of
> git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
> (2016-05-29 20:15:37 +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-20160530
>
> for you to fetch changes up to 01412261d99497021353c4b1d67e8df6c9cdc3c6:
>
> perf buildid-cache: Use path/to/bin/buildid/elf instead of
> path/to/bin/buildid (2016-05-30 13:15:03 -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)
>
> Infrastructure:
>
> - Adopt get_main_thread from db-export.c (Andi Kleen)
>
> - More prep work for backward ring buffer support (Wang Nan)
>
> - Prep work for supporting SDT (Statically Defined Tracing)
> tracepoints (Masami Hiramatsu)
>
> - Add arch/*/include/generated/ to .gitignore (Taeung Song)
>
> Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.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
>
> Masami Hiramatsu (3):
> perf symbols: Introduce filename__readable to check readability
> perf symbols: Cleanup the code flow of dso__find_kallsyms
> perf buildid-cache: Use path/to/bin/buildid/elf instead of
> path/to/bin/buildid
>
> Taeung Song (1):
> perf tools: Add arch/*/include/generated/ to .gitignore
>
> Wang Nan (5):
> 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/.gitignore | 1 +
> tools/perf/arch/x86/util/tsc.c | 2 +
> tools/perf/builtin-record.c | 9 +++-
> tools/perf/tests/fdarray.c | 8 +--
> tools/perf/util/build-id.c | 115
> ++++++++++++++++++++++++++++++----------
> tools/perf/util/build-id.h | 2 +
> tools/perf/util/callchain.h | 1 +
> tools/perf/util/db-export.c | 13 +----
> tools/perf/util/dso.h | 5 ++
> 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 | 71 ++++++++++++-------------
> tools/perf/util/thread.c | 11 ++++
> tools/perf/util/thread.h | 2 +
> 27 files changed, 252 insertions(+), 100 deletions(-)
Pulled, thanks a lot Arnaldo!
Ingo
