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Date: Sat, 16 Apr 2016 11:12:40 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: linux-kernel@...r.kernel.org,
Adrian Hunter <adrian.hunter@...el.com>,
David Ahern <dsahern@...il.com>,
Frederic Weisbecker <fweisbec@...il.com>,
Jiri Olsa <jolsa@...nel.org>,
Milian Wolff <milian.wolff@...b.com>,
Namhyung Kim <namhyung@...nel.org>,
Wang Nan <wangnan0@...wei.com>,
Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [GIT PULL 00/15] perf/core improvements
* Arnaldo Carvalho de Melo <acme@...nel.org> wrote:
> Hi Ingo,
>
> Please consider pulling,
>
> - Arnaldo
>
> The following changes since commit 0b22cd276cec21107d9d69453fa58abba73e71df:
>
> Merge tag 'perf-core-for-mingo-20160414' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2016-04-14 15:30:59 +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-20160415
>
> for you to fetch changes up to f3e459d16a8493b617ccf2a940330279679e0291:
>
> perf trace: Bump --mmap-pages when --call-graph is used by the root user (2016-04-15 17:52:34 -0300)
>
> ----------------------------------------------------------------
> perf/core improvements:
>
> User visible:
>
> - Wire the callchain unwinding "max-stack" know to 'perf script --max-stack',
> allowing to limit the depth of callchains, possibly reducing processing
> time (Arnaldo Carvalho de Melo)
>
> - Ditto for 'perf trace --max-stack' (Arnaldo Carvalho de Melo)
>
> - Introduce a --min-stack filter for 'perf trace', to show syscalls that
> had a userspace callchain leading to it at least min-stack deep (Arnaldo Carvalho de Melo)
>
> - Make 'perf trace' work with multiple threads and the --duration filter,
> i.e. do not print the start of an interrupted syscall followed by ...
> to print interrupts from other threads, as we need to wait the sys_exit
> syscall tracepoint to calculate the duration, duh. (Arnaldo Carvalho de Melo)
>
> System wide --duration now works as expected:
>
> [root@...et ~]# trace --duration 100
> 152.393 (145.147 ms): Timer/24358 futex(uaddr: 0x7f5ed98e56cc, op: WAIT_BITSET|PRIV|CLKRT, val: 7055125, utime: 0x7f5ecdbfec30, val3: 4294967295) = -1 ETIMEDOUT Connection timed out
> 152.438 (145.040 ms): firefox/24321 poll(ufds: 0x7f5ec388b460, nfds: 6, timeout_msecs: 4294967295) = 1
> 358.580 (158.279 ms): Xorg/2025 select(n: 512, inp: 0x83a8e0, tvp: 0x7ffdcbb63610) = 0 Timeout
> 358.687 (148.285 ms): gnome-terminal/2711 poll(ufds: 0x55b7e6811ad0, nfds: 15, timeout_msecs: 249) = 1
> 370.150 (169.569 ms): gnome-shell/2287 poll(ufds: 0x55e623d65490, nfds: 86, timeout_msecs: 4294967295) = 1
>
> - Now 'perf trace's --max-stack and --min-stack will automatically set
> "--call-graph dwarf", if --call-graph is not present on the command line:
>
> [root@...et ~]# perf trace -e nanosleep --max-stack 3 usleep 1
> 0.299 ( 0.057 ms): usleep/29658 nanosleep(rqtp: 0x7fff80f3b230) = 0
> __nanosleep+0x10 (/usr/lib64/libc-2.22.so)
> usleep+0x34 (/usr/lib64/libc-2.22.so)
> main+0x1eb (/usr/bin/usleep)
> [root@...et ~]#
>
> - Bump 'perf trace --mmap-pages' for root when using callchains and not
> specifying --mmap-pages explicitely (Arnaldo Carvalho de Melo)
>
> Build fixes:
>
> - The python binding object had missing symbols, to some refactoring
> to fix that (Arnaldo Carvalho de Melo)
>
> Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
>
> ----------------------------------------------------------------
> Arnaldo Carvalho de Melo (15):
> perf trace: Move socket_type beautifier to tools/perf/trace/beauty/
> perf callchain: Start moving away from global per thread cursors
> perf evsel: Remove symbol_conf usage
> perf symbols: Move fprintf routines to separate object file
> perf evsel: Require that callchains be resolved before calling fprintf_{sym,callchain}
> perf tools: Remove addr_location argument to sample__fprintf_callchain
> perf script: Add --max-stack knob
> perf trace: Add --max-stack knob
> perf evsel: Move fprintf methods to separate source file
> perf trace: Do not print interrupted syscalls when using --duration
> perf trace: Introduce --min-stack filter
> perf record: Export record_opts based callchain parsing helper
> perf trace: Make --(min,max}-stack imply "--call-graph dwarf"
> perf evlist: Expose perf_event_mlock_kb_in_pages() helper
> perf trace: Bump --mmap-pages when --call-graph is used by the root user
>
> tools/perf/Documentation/perf-script.txt | 10 +
> tools/perf/Documentation/perf-trace.txt | 23 +++
> tools/perf/builtin-kmem.c | 2 +-
> tools/perf/builtin-record.c | 35 ++--
> tools/perf/builtin-script.c | 39 ++--
> tools/perf/builtin-trace.c | 144 +++++++-------
> tools/perf/trace/beauty/socket_type.c | 60 ++++++
> tools/perf/util/Build | 2 +
> tools/perf/util/callchain.c | 5 +-
> tools/perf/util/callchain.h | 9 +-
> tools/perf/util/evlist.c | 42 ++--
> tools/perf/util/evlist.h | 2 +
> tools/perf/util/evsel.c | 220 ---------------------
> tools/perf/util/evsel.h | 19 +-
> tools/perf/util/evsel_fprintf.c | 212 ++++++++++++++++++++
> tools/perf/util/hist.c | 2 +-
> tools/perf/util/machine.c | 26 +--
> tools/perf/util/machine.h | 4 +
> tools/perf/util/python-ext-sources | 1 +
> .../perf/util/scripting-engines/trace-event-perl.c | 2 +-
> .../util/scripting-engines/trace-event-python.c | 2 +-
> tools/perf/util/symbol.c | 71 -------
> tools/perf/util/symbol.h | 5 +
> tools/perf/util/symbol_fprintf.c | 71 +++++++
> 24 files changed, 565 insertions(+), 443 deletions(-)
> create mode 100644 tools/perf/trace/beauty/socket_type.c
> create mode 100644 tools/perf/util/evsel_fprintf.c
> create mode 100644 tools/perf/util/symbol_fprintf.c
Pulled, thanks a lot Arnaldo!
Ingo
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