• Arnaldo Carvalho de Melo's avatar
    perf trace: Allow specifying list of syscalls and events in -e/--expr/--event · 017037ff
    Arnaldo Carvalho de Melo authored
    Makes it easier to specify both events and syscalls (to be formatter
    strace-like), i.e. previously one would have to do:
    
      # perf trace -e nanosleep --event sched:sched_switch usleep 1
    
    Now it is possible to do:
    
      # perf trace -e nanosleep,sched:sched_switch usleep 1
         0.000 ( 0.021 ms): usleep/17962 nanosleep(rqtp: 0x7ffdedd61ec0) ...
         0.021 (         ): sched:sched_switch:usleep:17962 [120] S ==> swapper/1:0 [120])
         0.000 ( 0.066 ms): usleep/17962  ... [continued]: nanosleep()) = 0
      #
    
    The old style --expr and using both -e and --event continues to work.
    
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Milian Wolff <milian.wolff@kdab.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Wang Nan <wangnan0@huawei.com>
    Link: http://lkml.kernel.org/n/tip-ieg6bakub4657l9e6afn85r4@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    017037ff
builtin-trace.c 84.3 KB