• Arnaldo Carvalho de Melo's avatar
    perf trace beautify ioctl: Beautify sound ioctl's 'cmd' arg · 2c3e9629
    Arnaldo Carvalho de Melo authored
    This time we try a new approach, using a copy of uapi/sound/asound.h we
    auto generate the string tables, then include it in the ioctl cmd
    beautifier.
    
    This way either the sound developers will add the new commands to the
    tools/ copy, like is happening with other areas of tools/include/ (bpf.h
    comes to mind), or we'll be notified when building perf that our copy
    drifted.
    
    E.g.:
    
      # perf trace -p 22084 -e ioctl 2>&1 | head -5
         0.000 ( 0.068 ms): alsa-sink-ALC3/22084 ioctl(fd: 49</dev/snd/pcmC1D0p>, cmd: SNDRV_PCM_HWSYNC, arg: 0x557f8d7fa0f0) = 0
         0.344 ( 0.041 ms): alsa-sink-ALC3/22084 ioctl(fd: 46</dev/snd/controlC1>, cmd: SNDRV_CTL_ELEM_READ, arg: 0x7fe764018ee0) = 0
         0.403 ( 0.011 ms): alsa-sink-ALC3/22084 ioctl(fd: 49</dev/snd/pcmC1D0p>, cmd: SNDRV_PCM_HWSYNC, arg: 0x557f8d7fa0f0) = 0
         0.427 ( 0.009 ms): alsa-sink-ALC3/22084 ioctl(fd: 49</dev/snd/pcmC1D0p>, cmd: SNDRV_PCM_STATUS_EXT, arg: 0x7fe76c2e0b30) = 0
         2.461 ( 0.042 ms): alsa-sink-ALC3/22084 ioctl(fd: 49</dev/snd/pcmC1D0p>, cmd: SNDRV_PCM_HWSYNC, arg: 0x557f8d7fa0f0) = 0
      #
    
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Wang Nan <wangnan0@huawei.com>
    Link: http://lkml.kernel.org/n/tip-8zuyf3e3u6jjcb2xzerw0kdi@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    2c3e9629
sndrv_ctl_ioctl.sh 288 Bytes