1. 17 8月, 2015 9 次提交
  2. 15 8月, 2015 1 次提交
  3. 14 8月, 2015 2 次提交
  4. 13 8月, 2015 6 次提交
    • I
      Merge tag 'perf-core-for-mingo' of... · a897b5f0
      Ingo Molnar 提交于
      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:
      
      User visible changes:
      
        - Allow selecting the type of callchains per event, including disabling
          callchains in all but one entry in an event list, to save space, and also
          to ask for the callchains collected in one event to be used in other
          events. (Kan Liang)
      
        - Beautify more syscall arguments in 'perf trace': (Arnaldo Carvalho de Melo)
          - A bunch more translate file/pathnames from pointers to strings.
          - Convert numbers to strings for the 'keyctl' syscall 'option' arg.
          - Add missing 'clockid' entries.
      
        - Fix 'perf probe -L sys_*' as it was not showing all the source code for
          syscall functions in the kernel. (Masami Hiramatsu)
      
        - Make ESC unzoom as well in the hists browser, i.e. in 'report' and 'top',
          as we're considering repurposing the right and left arrow keys to use in
          horizontal scrolling, i.e. leave just ESC to be used for what <- works
          now, and ENTER for what -> does (they are already aliases for ages).
          (Arnaldo Carvalho de Melo)
      
      Infrastructure fixes:
      
        - Check for SRCLINE_UNKNOWN case in "srcfile" processing (Andi Kleen)
      
        - Wrap the slsmg_{printf,write_nstring} slang functions behind ui_browser, so
          that we can make the ui_browser based browsers (annotate, menus, hists, etc) UI
          library agnostic and usable with multiple backends (slang now, GTK+ and others
          in the future, maybe) (Arnaldo Carvalho de Melo)
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Signed-off-by: NIngo Molnar <mingo@kernel.org>
      a897b5f0
    • K
      perf tests: Add tests to callgraph and time parse · 71ef150e
      Kan Liang 提交于
      Add tests in tests/parse-events.c to check call-graph and time option.
      Signed-off-by: NKan Liang <kan.liang@intel.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Link: http://lkml.kernel.org/r/1439289050-40510-4-git-send-email-kan.liang@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      71ef150e
    • K
      perf report: Show call graph from reference events · 9e207ddf
      Kan Liang 提交于
      Introduce --show-ref-call-graph for perf report to print reference
      callgraph for no callgraph event.
      
      Here is an example.
      
       perf report --show-ref-call-graph --stdio
      
       # To display the perf.data header info, please use
       --header/--header-only options.
       #
       #
       # Total Lost Samples: 0
       #
       # Samples: 5  of event 'cpu/cpu-cycles,call-graph=fp/'
       # Event count (approx.): 144985
       #
       # Children      Self  Command  Shared Object     Symbol
       # ........  ........  .......  ................  ........................................
       #
          72.30%     0.00%  sleep    [kernel.vmlinux]  [k] entry_SYSCALL_64_fastpath
                    |
                    ---entry_SYSCALL_64_fastpath
                       |
                       |--22.62%-- __GI___libc_nanosleep
                        --77.38%-- [...]
      
      ......
      
       # Samples: 6  of event 'cpu/instructions,call-graph=no/', show reference callgraph
       # Event count (approx.): 172780
       #
       # Children      Self  Command  Shared Object     Symbol
       # ........  ........  .......  ................  ........................................
       #
          73.16%     0.00%  sleep    [kernel.vmlinux]  [k] entry_SYSCALL_64_fastpath
                    |
                    ---entry_SYSCALL_64_fastpath
                       |
                       |--31.44%-- __GI___libc_nanosleep
                        --68.56%-- [...]
      Signed-off-by: NKan Liang <kan.liang@intel.com>
      Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Link: http://lkml.kernel.org/r/1439289050-40510-3-git-send-email-kan.liang@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      9e207ddf
    • K
      perf callchain: Allow disabling call graphs per event · f9db0d0f
      Kan Liang 提交于
      This patch introduce "call-graph=no" to disable per-event callgraph.
      
      Here is an example.
      
        perf record -e 'cpu/cpu-cycles,call-graph=fp/,cpu/instructions,call-graph=no/' sleep 1
      
        perf report --stdio
      
        # To display the perf.data header info, please use
        --header/--header-only options.
        #
        #
        # Total Lost Samples: 0
        #
        # Samples: 6  of event 'cpu/cpu-cycles,call-graph=fp/'
        # Event count (approx.): 774218
        #
        # Children      Self  Command  Shared Object     Symbol
        # ........  ........  .......  ................  ........................................
        #
          61.94%     0.00%  sleep    [kernel.vmlinux]  [k] entry_SYSCALL_64_fastpath
                    |
                    ---entry_SYSCALL_64_fastpath
                       |
                       |--97.30%-- __brk
                       |
                        --2.70%-- mmap64
                                  _dl_check_map_versions
                                  _dl_check_all_versions
      
          61.94%     0.00%  sleep    [kernel.vmlinux]  [k] perf_event_mmap
                    |
                    ---perf_event_mmap
                       |
                       |--97.30%-- do_brk
                       |          sys_brk
                       |          entry_SYSCALL_64_fastpath
                       |          __brk
                       |
                        --2.70%-- mmap_region
                                  do_mmap_pgoff
                                  vm_mmap_pgoff
                                  sys_mmap_pgoff
                                  sys_mmap
                                  entry_SYSCALL_64_fastpath
                                  mmap64
                                  _dl_check_map_versions
                                  _dl_check_all_versions
        ......
      
        # Samples: 6  of event 'cpu/instructions,call-graph=no/'
        # Event count (approx.): 359692
        #
        # Children      Self  Command  Shared Object     Symbol
        # ........  ........  .......  ................  .................................
        #
           89.03%     0.00%  sleep    [unknown]         [.] 0xffff6598ffff6598
           89.03%     0.00%  sleep    ld-2.17.so        [.] _dl_resolve_conflicts
           89.03%     0.00%  sleep    [kernel.vmlinux]  [k] page_fault
      Signed-off-by: NKan Liang <kan.liang@intel.com>
      Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Link: http://lkml.kernel.org/r/1439289050-40510-2-git-send-email-kan.liang@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      f9db0d0f
    • K
      perf callchain: Per-event type selection support · d457c963
      Kan Liang 提交于
      This patchkit adds the ability to set callgraph mode (fp, dwarf, lbr) per
      event. This in term can reduce sampling overhead and the size of the
      perf.data.
      
      Here is an example.
      
        perf record -e 'cpu/cpu-cycles,period=1000,call-graph=fp,time=1/,cpu/instructions,call-graph=lbr/' sleep 1
      
       perf evlist -v
       cpu/cpu-cycles,period=1000,call-graph=fp,time=1/: type: 4, size: 112,
       config: 0x3c, { sample_period, sample_freq }: 1000, sample_type:
       IP|TID|TIME|CALLCHAIN|PERIOD|IDENTIFIER, read_format: ID, disabled: 1,
       inherit: 1, mmap: 1, comm: 1, enable_on_exec: 1, task: 1, sample_id_all:
       1, exclude_guest: 1, mmap2: 1, comm_exec: 1
       cpu/instructions,call-graph=lbr/: type: 4, size: 112, config: 0xc0, {
       sample_period, sample_freq }: 4000, sample_type:
       IP|TID|TIME|CALLCHAIN|PERIOD|BRANCH_STACK|IDENTIFIER, read_format: ID,
       disabled: 1, inherit: 1, freq: 1, enable_on_exec: 1, sample_id_all: 1,
       exclude_guest: 1
      Signed-off-by: NKan Liang <kan.liang@intel.com>
      Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Link: http://lkml.kernel.org/r/1439289050-40510-1-git-send-email-kan.liang@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      d457c963
    • M
      perf probe: Fix to show lines of sys_ functions correctly · 75186a9b
      Masami Hiramatsu 提交于
      "perf probe --lines sys_poll" shows only the first line of sys_poll,
      because the SYSCALL_DEFINE macro:
      
        ----
        SYSCALL_DEFINE*(foo,...)
        {
          body;
        }
        ----
      
        is expanded as below (on debuginfo)
      
        ----
      
        static inline int SYSC_foo(...)
        {
          body;
        }
        int SyS_foo(...) <- is an alias of sys_foo.
        {
          return SYSC_foo(...);
        }
        ----
      
      So, "perf probe --lines sys_foo" decodes SyS_foo function and it also skips
      inlined functions(SYSC_foo) inside the target function because those functions
      are usually defined somewhere else.
      
      To fix this issue, this fix checks whether the inlined function is defined at
      the same point of the target function, and if so, it doesn't skip the inline
      function.
      Reported-by: NArnaldo Carvalho de Melo <acme@kernel.org>
      Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Link: http://lkml.kernel.org/r/20150812012406.11811.94691.stgit@localhost.localdomainSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      75186a9b
  5. 12 8月, 2015 17 次提交
  6. 11 8月, 2015 5 次提交