1. 30 10月, 2015 1 次提交
    • W
      perf tools: Compile scriptlets to BPF objects when passing '.c' to --event · d509db04
      Wang Nan 提交于
      This patch provides infrastructure for passing source files to --event
      directly using:
      
       # perf record --event bpf-file.c command
      
      This patch does following works:
      
       1) Allow passing '.c' file to '--event'. parse_events_load_bpf() is
          expanded to allow caller tell it whether the passed file is source
          file or object.
      
       2) llvm__compile_bpf() is called to compile the '.c' file, the result
          is saved into memory. Use bpf_object__open_buffer() to load the
          in-memory object.
      
      Introduces a bpf-script-example.c so we can manually test it:
      
       # perf record --clang-opt "-DLINUX_VERSION_CODE=0x40200" --event ./bpf-script-example.c sleep 1
      
      Note that '--clang-opt' must put before '--event'.
      
      Futher patches will merge it into a testcase so can be tested automatically.
      Signed-off-by: NWang Nan <wangnan0@huawei.com>
      Acked-by: NAlexei Starovoitov <ast@plumgrid.com>
      Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
      Cc: Daniel Borkmann <daniel@iogearbox.net>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: He Kuang <hekuang@huawei.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Kaixu Xia <xiakaixu@huawei.com>
      Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Zefan Li <lizefan@huawei.com>
      Cc: pi3orama@163.com
      Link: http://lkml.kernel.org/r/1444826502-49291-10-git-send-email-wangnan0@huawei.comSigned-off-by: NHe Kuang <hekuang@huawei.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      d509db04
  2. 28 10月, 2015 2 次提交
    • W
      perf tools: Enable passing bpf object file to --event · 84c86ca1
      Wang Nan 提交于
      By introducing new rules in tools/perf/util/parse-events.[ly], this
      patch enables 'perf record --event bpf_file.o' to select events by an
      eBPF object file. It calls parse_events_load_bpf() to load that file,
      which uses bpf__prepare_load() and finally calls bpf_object__open() for
      the object files.
      
      After applying this patch, commands like:
      
       # perf record --event foo.o sleep
      
      become possible.
      
      However, at this point it is unable to link any useful things onto the
      evsel list because the creating of probe points and BPF program
      attaching have not been implemented.  Before real events are possible to
      be extracted, to avoid perf report error because of empty evsel list,
      this patch link a dummy evsel. The dummy event related code will be
      removed when probing and extracting code is ready.
      
      Commiter notes:
      
      Using it:
      
        $ ls -la foo.o
        ls: cannot access foo.o: No such file or directory
        $ perf record --event foo.o sleep
        libbpf: failed to open foo.o: No such file or directory
        event syntax error: 'foo.o'
                             \___ BPF object file 'foo.o' is invalid
      
        (add -v to see detail)
        Run 'perf list' for a list of valid events
      
         Usage: perf record [<options>] [<command>]
            or: perf record [<options>] -- <command> [<options>]
      
            -e, --event <event>   event selector. use 'perf list' to list available events
        $
      
        $ file /tmp/build/perf/perf.o
        /tmp/build/perf/perf.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
        $ perf record --event /tmp/build/perf/perf.o sleep
        libbpf: /tmp/build/perf/perf.o is not an eBPF object file
        event syntax error: '/tmp/build/perf/perf.o'
                             \___ BPF object file '/tmp/build/perf/perf.o' is invalid
      
        (add -v to see detail)
        Run 'perf list' for a list of valid events
      
         Usage: perf record [<options>] [<command>]
            or: perf record [<options>] -- <command> [<options>]
      
            -e, --event <event>   event selector. use 'perf list' to list available events
        $
      
        $ file /tmp/foo.o
        /tmp/foo.o: ELF 64-bit LSB relocatable, no machine, version 1 (SYSV), not stripped
        $ perf record --event /tmp/foo.o sleep 1
        [ perf record: Woken up 1 times to write data ]
        [ perf record: Captured and wrote 0.013 MB perf.data ]
        $ perf evlist
        /tmp/foo.o
        $ perf evlist  -v
        /tmp/foo.o: type: 1, size: 112, config: 0x9, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
        $
      
      So, type 1 is PERF_TYPE_SOFTWARE, config 0x9 is PERF_COUNT_SW_DUMMY, ok.
      
        $ perf report --stdio
        Error:
        The perf.data file has no samples!
        # To display the perf.data header info, please use --header/--header-only options.
        #
        $
      Signed-off-by: NWang Nan <wangnan0@huawei.com>
      Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Alexei Starovoitov <ast@plumgrid.com>
      Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
      Cc: Daniel Borkmann <daniel@iogearbox.net>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: He Kuang <hekuang@huawei.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Kaixu Xia <xiakaixu@huawei.com>
      Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Zefan Li <lizefan@huawei.com>
      Cc: pi3orama@163.com
      Link: http://lkml.kernel.org/r/1444826502-49291-4-git-send-email-wangnan0@huawei.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      84c86ca1
    • W
      perf tools: Enable pre-event inherit setting by config terms · 374ce938
      Wang Nan 提交于
      This patch allows perf record setting event's attr.inherit bit by
      config terms like:
      
        # perf record -e cycles/no-inherit/ ...
        # perf record -e cycles/inherit/ ...
      
      So user can control inherit bit for each event separately.
      
      In following example, a.out fork()s in main then do some complex
      CPU intensive computations in both of its children.
      
      Basic result with and without inherit:
      
        # perf record -e cycles -e instructions ./a.out
        [ perf record: Woken up 9 times to write data ]
        [ perf record: Captured and wrote 2.205 MB perf.data (47920 samples) ]
        # perf report --stdio
        # ...
        # Samples: 23K of event 'cycles'
        # Event count (approx.): 23641752891
        ...
        # Samples: 24K of event 'instructions'
        # Event count (approx.): 30428312415
      
        # perf record -i -e cycles -e instructions ./a.out
        [ perf record: Woken up 5 times to write data ]
        [ perf record: Captured and wrote 1.111 MB perf.data (24019 samples) ]
        ...
        # Samples: 12K of event 'cycles'
        # Event count (approx.): 11699501775
        ...
        # Samples: 12K of event 'instructions'
        # Event count (approx.): 15058023559
      
      Cancel inherit for one event when globally enable:
      
        # perf record -e cycles/no-inherit/ -e instructions ./a.out
        [ perf record: Woken up 7 times to write data ]
        [ perf record: Captured and wrote 1.660 MB perf.data (36004 samples) ]
        ...
        # Samples: 12K of event 'cycles/no-inherit/'
        # Event count (approx.): 11895759282
       ...
        # Samples: 24K of event 'instructions'
        # Event count (approx.): 30668000441
      
      Enable inherit for one event when globally disable:
      
        # perf record -i -e cycles/inherit/ -e instructions ./a.out
        [ perf record: Woken up 7 times to write data ]
        [ perf record: Captured and wrote 1.654 MB perf.data (35868 samples) ]
        ...
        # Samples: 23K of event 'cycles/inherit/'
        # Event count (approx.): 23285400229
        ...
        # Samples: 11K of event 'instructions'
        # Event count (approx.): 14969050259
      
      Committer note:
      
      One can check if the bit was set, in addition to seeing the result in
      the perf.data file size as above by doing one of:
      
        # perf record -e cycles -e instructions -a usleep 1
        [ perf record: Woken up 1 times to write data ]
        [ perf record: Captured and wrote 0.911 MB perf.data (63 samples) ]
        # perf evlist -v
        cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ID|CPU|PERIOD, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
        instructions: size: 112, config: 0x1, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ID|CPU|PERIOD, read_format: ID, disabled: 1, inherit: 1, freq: 1, sample_id_all: 1, exclude_guest: 1
        #
      
      So, the inherit bit was set in both, now, if we disable it globally using
      --no-inherit:
      
        # perf record --no-inherit -e cycles -e instructions -a usleep 1
        [ perf record: Woken up 1 times to write data ]
        [ perf record: Captured and wrote 0.910 MB perf.data (56 samples) ]
        # perf evlist -v
        cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ID|CPU|PERIOD, read_format: ID, disabled: 1, mmap: 1, comm: 1, freq: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
        instructions: size: 112, config: 0x1, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ID|CPU|PERIOD, read_format: ID, disabled: 1, freq: 1, sample_id_all: 1, exclude_guest: 1
      
      No inherit bit set, then disabling it and setting just on the cycles event:
      
        # perf record --no-inherit -e cycles/inherit/ -e instructions -a usleep 1
        [ perf record: Woken up 1 times to write data ]
        [ perf record: Captured and wrote 0.909 MB perf.data (48 samples) ]
        # perf evlist -v
        cycles/inherit/: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ID|CPU|PERIOD, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
        instructions: size: 112, config: 0x1, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ID|CPU|PERIOD, read_format: ID, disabled: 1, freq: 1, sample_id_all: 1, exclude_guest: 1
        #
      
      We can see it as well in by using a more verbose level of debug messages in
      the tool that sets up the perf_event_attr, 'perf record' in this case:
      
        [root@zoo ~]# perf record -vv --no-inherit -e cycles/inherit/ -e instructions -a usleep 1
        ------------------------------------------------------------
        perf_event_attr:
          size                             112
          { sample_period, sample_freq }   4000
          sample_type                      IP|TID|TIME|ID|CPU|PERIOD
          read_format                      ID
          disabled                         1
          inherit                          1
          mmap                             1
          comm                             1
          freq                             1
          task                             1
          sample_id_all                    1
          exclude_guest                    1
          mmap2                            1
          comm_exec                        1
        ------------------------------------------------------------
        sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8
        sys_perf_event_open: pid -1  cpu 1  group_fd -1  flags 0x8
        sys_perf_event_open: pid -1  cpu 2  group_fd -1  flags 0x8
        sys_perf_event_open: pid -1  cpu 3  group_fd -1  flags 0x8
        ------------------------------------------------------------
        perf_event_attr:
          size                             112
          config                           0x1
          { sample_period, sample_freq }   4000
          sample_type                      IP|TID|TIME|ID|CPU|PERIOD
          read_format                      ID
          disabled                         1
          freq                             1
          sample_id_all                    1
          exclude_guest                    1
        ------------------------------------------------------------
        sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8
      
      <SNIP>
      Signed-off-by: NWang Nan <wangnan0@huawei.com>
      Acked-by: NJiri Olsa <jolsa@kernel.org>
      Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Alexei Starovoitov <ast@plumgrid.com>
      Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
      Cc: David S. Miller <davem@davemloft.net>
      Cc: Li Zefan <lizefan@huawei.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Zefan Li <lizefan@huawei.com>
      Cc: pi3orama@163.com
      Link: http://lkml.kernel.org/r/1446029705-199659-2-git-send-email-wangnan0@huawei.com
      [ s/u64/bool/ for the perf_evsel_config_term inherit field - jolsa]
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      374ce938
  3. 29 9月, 2015 2 次提交
    • H
      perf tools: Enable event_config terms to tracepoint events · e637d177
      He Kuang 提交于
      This patch enables config terms for tracepoint perf events. Valid terms
      for tracepoint events are 'call-graph' and 'stack-size', so we can use
      different callgraph settings for each event and eliminate unnecessary
      overhead.
      
      Here is an example for using different call-graph config for each
      tracepoint.
      
        $ perf record -e syscalls:sys_enter_write/call-graph=fp/
                      -e syscalls:sys_exit_write/call-graph=no/
                      dd if=/dev/zero of=test bs=4k count=10
      
        $ perf report --stdio
      
        #
        # Total Lost Samples: 0
        #
        # Samples: 13  of event 'syscalls:sys_enter_write'
        # Event count (approx.): 13
        #
        # Children      Self  Command  Shared Object       Symbol
        # ........  ........  .......  ..................  ......................
        #
            76.92%    76.92%  dd       libpthread-2.20.so  [.] __write_nocancel
                         |
                         ---__write_nocancel
      
            23.08%    23.08%  dd       libc-2.20.so        [.] write
                         |
                         ---write
                            |
                            |--33.33%-- 0x2031342820736574
                            |
                            |--33.33%-- 0xa6e69207364726f
                            |
                             --33.33%-- 0x34202c7320393039
        ...
      
        # Samples: 13  of event 'syscalls:sys_exit_write'
        # Event count (approx.): 13
        #
        # Children      Self  Command  Shared Object       Symbol
        # ........  ........  .......  ..................  ......................
        #
            76.92%    76.92%  dd       libpthread-2.20.so  [.] __write_nocancel
            23.08%    23.08%  dd       libc-2.20.so        [.] write
             7.69%     0.00%  dd       [unknown]           [.] 0x0a6e69207364726f
             7.69%     0.00%  dd       [unknown]           [.] 0x2031342820736574
             7.69%     0.00%  dd       [unknown]           [.] 0x34202c7320393039
      Signed-off-by: NHe Kuang <hekuang@huawei.com>
      Acked-by: NJiri Olsa <jolsa@kernel.org>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Kan Liang <kan.liang@intel.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Wang Nan <wangnan0@huawei.com>
      Cc: pi3orama@163.com
      Link: http://lkml.kernel.org/r/1443412336-120050-4-git-send-email-hekuang@huawei.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      e637d177
    • H
      perf tools: Show proper error message for wrong terms of hw/sw events · ffeb883e
      He Kuang 提交于
      Show proper error message and show valid terms when wrong config terms
      is specified for hw/sw type perf events.
      
      This patch makes the original error format function formats_error_string()
      more generic, which only outputs the static config terms for hw/sw perf
      events, and prepends pmu formats for pmu events.
      
      Before this patch:
      
        $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1
        invalid or unsupported event: 'cpu-clock/freqx=200/'
        Run 'perf list' for a list of valid events
      
         usage: perf record [<options>] [<command>]
            or: perf record [<options>] -- <command> [<options>]
      
            -e, --event <event>   event selector. use 'perf list' to list available events
      
      After this patch:
      
        $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1
        event syntax error: 'cpu-clock/freqx=200/'
                                       \___ unknown term
      
        valid terms: config,config1,config2,name,period,freq,branch_type,time,call-graph,stack-size
      
        Run 'perf list' for a list of valid events
      
         usage: perf record [<options>] [<command>]
            or: perf record [<options>] -- <command> [<options>]
      
            -e, --event <event>   event selector. use 'perf list' to list available events
      Signed-off-by: NHe Kuang <hekuang@huawei.com>
      Acked-by: NJiri Olsa <jolsa@kernel.org>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Kan Liang <kan.liang@intel.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Wang Nan <wangnan0@huawei.com>
      Cc: pi3orama@163.com
      Link: http://lkml.kernel.org/r/1443412336-120050-2-git-send-email-hekuang@huawei.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      ffeb883e
  4. 15 9月, 2015 1 次提交
  5. 13 8月, 2015 1 次提交
    • 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
  6. 11 8月, 2015 1 次提交
  7. 05 8月, 2015 1 次提交
  8. 21 7月, 2015 1 次提交
    • W
      perf record: Allow filtering perf's pid via --exclude-perf · 4ba1faa1
      Wang Nan 提交于
      This patch allows 'perf record' to exclude events issued by perf itself
      by '--exclude-perf' option.
      
      Before this patch, when doing something like:
      
       # perf record -a -e syscalls:sys_enter_write <cmd>
      
      One could easily get result like this:
      
       # /tmp/perf report --stdio
       ...
        # Overhead  Command  Shared Object       Symbol
        # ........  .......  ..................  ....................
        #
            99.99%  perf     libpthread-2.18.so  [.] __write_nocancel
            0.01%   ls       libc-2.18.so        [.] write
            0.01%   sshd     libc-2.18.so        [.] write
       ...
      
      Where most events are generated by perf itself.
      
      A shell trick can be done to filter perf itself out:
      
       # cat << EOF > ./tmp
       > #!/bin/sh
       > exec perf record -e ... --filter="common_pid != \$\$" -a sleep 10
       > EOF
       # chmod a+x ./tmp
       # ./tmp
      
      However, doing so is user unfriendly.
      
      This patch extracts evsel iteration framework introduced by patch 'perf
      record: Apply filter to all events in a glob matching' into
      foreach_evsel_in_last_glob(), and makes exclude_perf() function append
      new filter expression to each evsel selected by a '-e' selector.
      
      To avoid losing filters if user pass '--filter' after '--exclude-perf',
      this patch uses perf_evsel__append_filter() in both case, instead of
      perf_evsel__set_filter() which removes old filter. As a side effect, now
      it is possible to use multiple '--filter' option for one selector. They
      are combinded with '&&'.
      Signed-off-by: NWang Nan <wangnan0@huawei.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Cc: Zefan Li <lizefan@huawei.com>
      Cc: pi3orama@163.com
      Link: http://lkml.kernel.org/r/1436513770-8896-2-git-send-email-wangnan0@huawei.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      4ba1faa1
  9. 27 5月, 2015 1 次提交
  10. 29 4月, 2015 5 次提交
  11. 28 2月, 2015 1 次提交
  12. 11 2月, 2015 1 次提交
  13. 22 1月, 2015 1 次提交
  14. 03 12月, 2014 1 次提交
  15. 16 10月, 2014 1 次提交
  16. 02 5月, 2014 1 次提交
  17. 13 7月, 2013 2 次提交
  18. 01 2月, 2013 1 次提交
  19. 25 1月, 2013 3 次提交
  20. 20 11月, 2012 1 次提交
    • D
      perf: Make perf build for x86 with UAPI disintegration applied · d2709c7c
      David Howells 提交于
      Make perf build for x86 once the UAPI disintegration patches for that arch
      have been applied by adding the appropriate -I flags - in the right order -
      and then converting some #includes that use ../.. notation to find main kernel
      headerfiles to use <asm/foo.h> and <linux/foo.h> instead.
      
      Note that -Iarch/foo/include/uapi is present _before_ -Iarch/foo/include.
      This makes sure we get the userspace version of the pt_regs struct.  Ideally,
      we wouldn't have the latter -I flag at all, but unfortunately we want
      asm/svm.h and asm/vmx.h in builtin-kvm.c and these aren't part of the UAPI -
      at least not for x86.  I wonder if the bits outside of the __KERNEL__ guards
      *should* be transferred there.
      
      I note also that perf seems to do its dependency handling manually by listing
      all the header files it might want to use in LIB_H in the Makefile.  Can this
      be changed to use -MD?
      
      Note that to do make this work, we need to export and UAPI disintegrate
      linux/hw_breakpoint.h, which I think should've been exported previously so that
      perf can access the bits.  We have to do this in the same patch to maintain
      bisectability.
      Signed-off-by: NDavid Howells <dhowells@redhat.com>
      d2709c7c
  21. 15 11月, 2012 1 次提交
  22. 24 10月, 2012 1 次提交
  23. 15 10月, 2012 1 次提交
  24. 23 8月, 2012 1 次提交
  25. 15 8月, 2012 4 次提交
    • A
      perf evlist: Rename __group method to __set_leader · 63dab225
      Arnaldo Carvalho de Melo 提交于
      Just like was done for parse_events__set_leader.
      
      Also we need to have the list_entry set_leader method in evlist.c so that we
      don't grow another dep in the python binding:
      
       # ~acme/git/linux/tools/perf/python/twatch.py
       Traceback (most recent call last):
         File "/home/acme/git/linux/tools/perf/python/twatch.py", line 16, in <module>
           import perf
       ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol: parse_events__set_leader
      
      And also remove a pr_debug from evsel.c so that we avoid this one too:
      
       # ~acme/git/linux/tools/perf/python/twatch.py
       Traceback (most recent call last):
         File "/home/acme/git/linux/tools/perf/python/twatch.py", line 16, in <module>
           import perf
       ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol: eprintf
      Acked-by: NJiri Olsa <jolsa@redhat.com>
      Acked-by: NNamhyung Kim <namhyung@gmail.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@gmail.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-0hk9dazg9pora9jylkqngovm@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      63dab225
    • J
      perf tools: Enable grouping logic for parsed events · 6a4bb04c
      Jiri Olsa 提交于
      This patch adds a functionality that allows to create event groups
      based on the way they are specified on the command line. Adding
      functionality to the '{}' group syntax introduced in earlier patch.
      
      The current '--group/-g' option behaviour remains intact. If you
      specify it for record/stat/top command, all the specified events
      become members of a single group with the first event as a group
      leader.
      
      With the new '{}' group syntax you can create group like:
        # perf record -e '{cycles,faults}' ls
      
      resulting in single event group containing 'cycles' and 'faults'
      events, with cycles event as group leader.
      
      All groups are created with regards to threads and cpus. Thus
      recording an event group within a 2 threads on server with
      4 CPUs will create 8 separate groups.
      
      Examples (first event in brackets is group leader):
      
        # 1 group (cpu-clock,task-clock)
        perf record --group -e cpu-clock,task-clock ls
        perf record -e '{cpu-clock,task-clock}' ls
      
        # 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
        perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls
      
        # 1 group (cpu-clock,task-clock,minor-faults,major-faults)
        perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls
        perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls
      
        # 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
        perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \
         -e instructions ls
      
        # 1 group
        # (cpu-clock,task-clock,minor-faults,major-faults,instructions)
        perf record --group -e cpu-clock,task-clock \
         -e minor-faults,major-faults -e instructions ls perf record -e
      '{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls
      
      It's possible to use standard event modifier for a group, which spans
      over all events in the group and updates each event modifier settings,
      for example:
      
        # perf record -r '{faults:k,cache-references}:p'
      
      resulting in ':kp' modifier being used for 'faults' and ':p' modifier
      being used for 'cache-references' event.
      Reviewed-by: NNamhyung Kim <namhyung@kernel.org>
      Signed-off-by: NJiri Olsa <jolsa@redhat.com>
      Acked-by: NPeter Zijlstra <peterz@infradead.org>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
      Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ulrich Drepper <drepper@gmail.com>
      Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      6a4bb04c
    • J
      perf tools: Add support to update event modifier · f5b1135b
      Jiri Olsa 提交于
      Adding support to update already defined event's attribute with
      event modifier. This change will allow to use group modifier as
      an update to the existing event modifiers.
      
      Adding 'add' parameter to the parse_events__modifier_event function.
      Calling it with 'add' = false/true, the event modifier is
      initialized/updated respectively.
      
      Added exclude_GH flag to evsel struct, because we need to remember
      if one of 'GH' modifiers was used for event. The reason is that the
      default settings for exclude_guest is 1 and during the group
      modifier processing we have no other way of knowing if it was set
      by default or by event modifier.
      
      Keeping the current behaviour, that any event/group modifier reset
      the defaults for exclude_host (0) and exclude_guest (1).
      Reviewed-by: NNamhyung Kim <namhyung@kernel.org>
      Signed-off-by: NJiri Olsa <jolsa@redhat.com>
      Acked-by: NPeter Zijlstra <peterz@infradead.org>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
      Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ulrich Drepper <drepper@gmail.com>
      Link: http://lkml.kernel.org/n/tip-8peaey3e2qc9dwtkvzbi4wmx@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      f5b1135b
    • J
      perf tools: Add support to parse event group syntax · 89efb029
      Jiri Olsa 提交于
      Adding scanner/parser bits to parse event groups.
      
      The grammar for group is:
        groups:      groups ',' group | group
        group:       group_name '{' events '}' group_mod
        group_name:  name | empty
        group_mod:   ':' group_mods | empty
        group_mods:  event_mod
      
      It's possible to use standard event modifier as a modifier
      for group. It'll be used as an update to existing event
      modifiers.
      
      It's necessary to use quoting ("'\) when specifying group on
      command line, since {} characters are interpreted by most of
      the shells.
      
      It is now possible to specify groups in event syntax like:
      
        '{cycles,faults}'
         - anonymous group
      
        'group1{cycles,faults}
         - group with name 'group1'
      
        '{cycles,faults}:k
         - anonymous group with event modifier 'k'
      
        '{cpu-clock,task-clock},{minor-faults,major-faults}'
         - two anonymous groups
      
      The grouping functionality itself is coming shortly.
      Reviewed-by: NNamhyung Kim <namhyung@kernel.org>
      Signed-off-by: NJiri Olsa <jolsa@redhat.com>
      Acked-by: NPeter Zijlstra <peterz@infradead.org>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
      Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ulrich Drepper <drepper@gmail.com>
      Link: http://lkml.kernel.org/n/tip-p4j8bnvo879uokum4k4zk5q6@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      89efb029
  26. 10 8月, 2012 1 次提交
  27. 08 8月, 2012 1 次提交
  28. 20 6月, 2012 1 次提交