ALSA: pcm_core: Fix wake_up() optimization
This change fixes the "ALSA: pcm_lib - optimize wake_up() calls for PCM I/O"
commit. New sleeping queue is introduced to separate user space and kernel
space wake_ups. runtime->nowake is renamed to twake (transfer wake).
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 27284f6..56ec35e 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -919,6 +919,7 @@
runtime->status->state = state;
}
wake_up(&runtime->sleep);
+ wake_up(&runtime->tsleep);
}
static struct action_ops snd_pcm_action_stop = {
@@ -1004,6 +1005,7 @@
SNDRV_TIMER_EVENT_MPAUSE,
&runtime->trigger_tstamp);
wake_up(&runtime->sleep);
+ wake_up(&runtime->tsleep);
} else {
runtime->status->state = SNDRV_PCM_STATE_RUNNING;
if (substream->timer)
@@ -1061,6 +1063,7 @@
runtime->status->suspended_state = runtime->status->state;
runtime->status->state = SNDRV_PCM_STATE_SUSPENDED;
wake_up(&runtime->sleep);
+ wake_up(&runtime->tsleep);
}
static struct action_ops snd_pcm_action_suspend = {