6 Mar
2012
6 Mar
'12
1:06 p.m.
On Tue, Mar 06, 2012 at 10:40:15AM +0000, Russell King - ARM Linux wrote:
On Mon, Mar 05, 2012 at 12:26:36AM +0000, Mark Brown wrote:
On Mon, Mar 05, 2012 at 12:13:52AM +0000, Tabi Timur-B04825 wrote:
To answer your question: I was lead to believe that the individual ALSA callback functions are atomic. So one thread should not be trying to start playback while another thread is simultaneously trying to stop it.
That's correct, there's ALSA level locking.
Please explain which lock prevents the capture substream trigger callback occuring simultaneously with a playback substream trigger callback on a SMP system.
Oh, bother - that one is per substream not per stream. Which isn't terribly helpful.