[alsa-devel] [PATCH 0/2] ALSA: pcm: probe tracepoint events only when parameter is changed

[Takashi Sakamoto]

Hi,

This patchset includes a part of my former RFC:
[alsa-devel] [PATCH RFC 00/21] ALSA: pcm: add tracepoints for PCM params operation
http://mailman.alsa-project.org/pipermail/alsa-devel/2017-May/120548.html

The purpose of this patchset is to limit added events of tracepoint
for PCM parameters only when corresponding parameter is actually
changed. Developers get the events without events for unchanged
parameters.

Additionally, this simplifies error handling of PCM parameters processing.
This is intrusive somehow for userspace applications but just for error
path.

Takashi Sakamoto (2):
  ALSA: pcm: return error immediately for parameters handling
  ALSA: pcm: probe events when parameters are changed actually

 sound/core/pcm_native.c | 122 ++++++++++++++++++++++++++----------------------
 1 file changed, 67 insertions(+), 55 deletions(-)

-- 
2.11.0