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| author | Jaroslav Kysela <perex@perex.cz> | 2010-01-21 10:32:15 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2010-01-21 10:32:15 +0100 |
| commit | c91a988dc6551c66418690e36b2a23cdb0255da8 (patch) | |
| tree | cbb408377b15488d4b45feb2f3d88a616f159814 /sound/core/pcm.c | |
| parent | d1db38c015a392b0ea8c15ab95abb3ee768b8d47 (diff) | |
| download | linux-c91a988dc6551c66418690e36b2a23cdb0255da8.tar.bz2 | |
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>
Diffstat (limited to 'sound/core/pcm.c')
| -rw-r--r-- | sound/core/pcm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/core/pcm.c b/sound/core/pcm.c index df57a0e30bf2..0d428d0896db 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -894,6 +894,7 @@ int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, memset((void*)runtime->control, 0, size); init_waitqueue_head(&runtime->sleep); + init_waitqueue_head(&runtime->tsleep); runtime->status->state = SNDRV_PCM_STATE_OPEN; |