• N
    perf record: Fix to honor user freq/interval properly · 17314e23
    Namhyung Kim 提交于
    When configuring event perf checked a wrong condition that user
    specified both of freq (-F) and period (-c) or the event has no
    default value.  This worked because most of events don't have default
    value and only tracepoint events have default of 1 (and it's not
    desirable to change it for those events).
    
    However, Andi's downloadable event patch changes the situation so it
    cannot change the value for those events.  Fix it by allowing override
    the default value if user gives one of the options.
    
      $ perf record -a -e uops_retired.all -F 4000 sleep 1
      [ perf record: Woken up 1 times to write data ]
      [ perf record: Captured and wrote 0.325 MB perf.data (~14185 samples) ]
    
      $ perf evlist -F
      cpu/uops_retired.all/: sample_freq=4000
    Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
    Cc: Andi Kleen <andi@firstfloor.org>
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    Link: http://lkml.kernel.org/r/1402292617-26278-1-git-send-email-namhyung@kernel.orgSigned-off-by: NJiri Olsa <jolsa@kernel.org>
    17314e23
evsel.c 48.0 KB