• Andi Kleen's avatar
    perf tools: Add support for weight v7 (modified) · 05484298
    Andi Kleen authored
    perf record has a new option -W that enables weightened sampling.
    
    Add sorting support in top/report for the average weight per sample and the
    total weight sum. This allows to both compare relative cost per event
    and the total cost over the measurement period.
    
    Add the necessary glue to perf report, record and the library.
    
    v2: Merge with new hist refactoring.
    v3: Fix manpage. Remove value check.
    Rename global_weight to weight and weight to local_weight.
    v4: Readd sort keys to manpage
    v5: Move weight to end
    v6: Move weight to template
    v7: Rename weight key.
    
    Original patch from Andi modified by Stephane Eranian <eranian@google.com>
    to include ONLY the weight supporting code and apply to pristine 3.8.0-rc4.
    Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Jiri Olsa <jolsa@redhat.com>
    Cc: Namhyung Kim <namhyung.kim@lge.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Link: http://lkml.kernel.org/r/1359040242-8269-6-git-send-email-eranian@google.com
    [ committer note: changed to cope with fc5871ed and the hists_link perf test entry ]
    Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    05484298
hist.c 21 KB