1. 18 12月, 2015 1 次提交
  2. 18 5月, 2015 1 次提交
    • A
      perf tools: Elliminate alignment holes · 86066064
      Arnaldo Carvalho de Melo 提交于
      perf_evsel:
      
      Before:
      
      	/* size: 320, cachelines: 5, members: 35 */
      	/* sum members: 304, holes: 3, sum holes: 16 */
      
      After:
      
      	/* size: 304, cachelines: 5, members: 35 */
      	/* last cacheline: 48 bytes */
      
      perf_evlist:
      
      Before:
      
      	/* size: 2544, cachelines: 40, members: 17 */
      	/* sum members: 2533, holes: 2, sum holes: 11 */
      	/* last cacheline: 48 bytes */
      
      After:
      
      	/* size: 2536, cachelines: 40, members: 17 */
      	/* sum members: 2533, holes: 1, sum holes: 3 */
      	/* last cacheline: 40 bytes */
      
      timechart:
      
      Before:
      
      	/* size: 288, cachelines: 5, members: 21 */
      	/* sum members: 271, holes: 2, sum holes: 10 */
      	/* padding: 7 */
      	/* last cacheline: 32 bytes */
      
      After:
      
      	/* size: 272, cachelines: 5, members: 21 */
      	/* sum members: 271, holes: 1, sum holes: 1 */
      	/* last cacheline: 16 bytes */
      
      thread:
      
      Before:
      
      	/* size: 112, cachelines: 2, members: 15 */
      	/* sum members: 101, holes: 2, sum holes: 11 */
      	/* last cacheline: 48 bytes */
      
      After:
      
      	/* size: 104, cachelines: 2, members: 15 */
      	/* sum members: 101, holes: 1, sum holes: 3 */
      	/* last cacheline: 40 bytes */
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-a543w7zjl9yyrg9nkf1teukp@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      86066064
  3. 09 5月, 2015 1 次提交
    • A
      perf machine: Protect the machine->threads with a rwlock · b91fc39f
      Arnaldo Carvalho de Melo 提交于
      In addition to using refcounts for the struct thread lifetime
      management, we need to protect access to machine->threads from
      concurrent access.
      
      That happens in 'perf top', where a thread processes events, inserting
      and deleting entries from that rb_tree while another thread decays
      hist_entries, that end up dropping references and ultimately deleting
      threads from the rb_tree and releasing its resources when no further
      hist_entry (or other data structures, like in 'perf sched') references
      it.
      
      So the rule is the same for refcounts + protected trees in the kernel,
      get the tree lock, find object, bump the refcount, drop the tree lock,
      return, use object, drop the refcount if no more use of it is needed,
      keep it if storing it in some other data structure, drop when releasing
      that data structure.
      
      I.e. pair "t = machine__find(new)_thread()" with a "thread__put(t)", and
      "perf_event__preprocess_sample(&al)" with "addr_location__put(&al)".
      
      The addr_location__put() one is because as we return references to
      several data structures, we may end up adding more reference counting
      for the other data structures and then we'll drop it at
      addr_location__put() time.
      Acked-by: NDavid Ahern <dsahern@gmail.com>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-bs9rt4n0jw3hi9f3zxyy3xln@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      b91fc39f
  4. 03 4月, 2015 1 次提交
    • Y
      perf timechart: Support using -f to override perf.data file ownership · 44f7e432
      Yunlong Song 提交于
      Enable perf timechart to use perf.data when it is not owned by current
      user or root.
      
      Example:
      
       # perf timechart record ls
       # chown Yunlong.Song:Yunlong.Song perf.data
       # ls -al perf.data
       -rw------- 1 Yunlong.Song Yunlong.Song 5471744 Apr  2 15:15 perf.data
       # id
       uid=0(root) gid=0(root) groups=0(root),64(pkcs11)
      
      Before this patch:
      
       # perf timechart
       File perf.data not owned by current user or root (use -f to override)
       # perf timechart -f
         Error: unknown switch `f'
      
        usage: perf timechart [<options>] {record}
      
           -i, --input <file>    input file name
           -o, --output <file>   output file name
           -w, --width <n>       page width
               --highlight <duration or task name>
                                 highlight tasks. Pass duration in ns or process name.
           -P, --power-only      output power data only
           -T, --tasks-only      output processes data only
           -p, --process <process>
                                 process selector. Pass a pid or process name.
               --symfs <directory>
                                 Look for files with symbols relative to this directory
           -n, --proc-num <n>    min. number of tasks to print
           -t, --topology        sort CPUs according to topology
               --io-skip-eagain  skip EAGAIN errors
               --io-min-time <time>
                                 all IO faster than min-time will visually appear longer
               --io-merge-dist <time>
                                 merge events that are merge-dist us apart
      
      As shown above, the -f option does not work at all.
      
      After this patch:
      
       # perf timechart
       File perf.data not owned by current user or root (use -f to override)
       # perf timechart -f
       Written 0.0 seconds of trace to output.svg.
       # cat output.svg
       <?xml version="1.0" standalone="no"?>
       <!DOCTYPE svg SYSTEM "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
       <svg width="1000" height="10110" version="1.1" xmlns="http://www.w3.org/2000/svg">
       <defs>
         <style type="text/css">
           <![CDATA[
             rect          { stroke-width: 1; }
       ...
       ...
      
      As shown above, the -f option really works now.
      Signed-off-by: NYunlong Song <yunlong.song@huawei.com>
      Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: http://lkml.kernel.org/r/1427982439-27388-9-git-send-email-yunlong.song@huawei.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      44f7e432
  5. 20 3月, 2015 1 次提交
  6. 11 3月, 2015 1 次提交
  7. 29 10月, 2014 2 次提交
  8. 26 9月, 2014 1 次提交
  9. 14 8月, 2014 2 次提交
  10. 12 8月, 2014 1 次提交
  11. 17 7月, 2014 1 次提交
  12. 10 7月, 2014 3 次提交
  13. 19 3月, 2014 2 次提交
  14. 21 1月, 2014 1 次提交
  15. 28 12月, 2013 1 次提交
  16. 18 12月, 2013 1 次提交
  17. 17 12月, 2013 4 次提交
  18. 02 12月, 2013 4 次提交
  19. 28 11月, 2013 10 次提交
  20. 07 11月, 2013 1 次提交