1. 11 Jan, 2016 10 commits
  2. 09 Jan, 2016 1 commit
    • Ingo Molnar's avatar
      Merge tag 'perf-core-for-mingo' of... · 3eb9ede2
      Ingo Molnar authored
      Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
      
      Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
      
      New features:
      
      - Allow using trace events fields as sort order keys, making 'perf evlist --trace_fields'
        show those, and then the user can select a subset and use like:
      
          perf top -e sched:sched_switch -s prev_comm,next_comm
      
        That works as well in 'perf report' when handling files containing
        tracepoints.
      
        The default when just tracepoint events are found in a perf.data file is to
        format it like ftrace, using the libtraceevent formatters, plugins, etc (Namhyung Kim)
      
      - Add support in 'perf script' to process 'perf stat record' generated files,
        culminating in a python perf script that calculates CPI (Cycles per
        Instruction) (Jiri Olsa)
      
      - Show random perf tool tips in the 'perf report' bottom line (Namhyung Kim)
      
      - perf report now defaults to --group if the perf.data file has grouped events, try it with:
      
        # perf record -e '{cycles,instructions}' -a sleep 1
        [ perf record: Woken up 1 times to write data ]
        [ perf record: Captured and wrote 1.093 MB perf.data (1247 samples) ]
        # perf report
        # Samples: 1K of event 'anon group { cycles, instructions }'
        # Event count (approx.): 1955219195
        #
        #       Overhead  Command     Shared Object      Symbol
      
           2.86%   0.22%  swapper     [kernel.kallsyms]  [k] intel_idle
           1.05%   0.33%  firefox     libxul.so          [.] js::SetObjectElement
           1.05%   0.00%  kworker/0:3 [kernel.kallsyms]  [k] gen6_ring_get_seqno
           0.88%   0.17%  chrome      chrome             [.] 0x0000000000ee27ab
           0.65%   0.86%  firefox     libxul.so          [.] js::ValueToId<(js::AllowGC)1>
           0.64%   0.23%  JS Helper   libxul.so          [.] js::SplayTree<js::jit::LiveRange*, js::jit::LiveRange>::splay
           0.62%   1.27%  firefox     libxul.so          [.] js::GetIterator
           0.61%   1.74%  firefox     libxul.so          [.] js::NativeSetProperty
           0.61%   0.31%  firefox     libxul.so          [.] js::SetPropertyByDefining
      
      User visible fixes:
      
      - Coect data mmaps so that the DWARF unwinder can handle usecases needing them,
        like softice (Jiri Olsa)
      
      - Decay callchains in fractal mode, fixing up cases where 'perf top -g' would
        show entries with more than 100% (Namhyung Kim)
      
      Infrastructure changes:
      
      - Sync tools/lib with the lib/ in the kernel sources for find_bit.c and
        move bitmap.[ch] from tools/perf/util/ to tools/lib/ (Arnaldo Carvalho de Melo)
      
      - No need to set attr.sample_freq in some 'perf test' entries that only
        want to deal with PERF_RECORD_ meta-events, improve a bit error output
        for CQM test (Arnaldo Carvalho de Melo)
      
      - Fix python binding build, adding some missing object files now required
        due to cpumap using find_bit stuff (Arnaldo Carvalho de Melo)
      
      - tools/build improvemnts (Jiri Olsa)
      
      - Add more files to cscope/ctags databases (Jiri Olsa)
      
      - Do not show 'trace' in 'perf help' if it is not compiled in (Jiri Olsa)
      
      - Make perf_evlist__open() open evsels with their cpus and threads,
        like perf record does, making them consistent (Adrian Hunter)
      
      - Fix pmu snapshot initialization bug (Stephane Eranian)
      
      - Add missing headers in perf's MANIFEST (Wang Nan)
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      3eb9ede2
  3. 08 Jan, 2016 21 commits
  4. 07 Jan, 2016 7 commits
  5. 06 Jan, 2016 1 commit