Messages in this thread | | | Date | Wed, 14 Jul 2004 12:29:43 +0200 | From | Takashi Iwai <> | Subject | Re: preempt-timing-2.6.8-rc1 |
| |
At Wed, 14 Jul 2004 10:59:53 +0300, Lenar Lõhmus wrote: > > And this still seems to be very long and real: > 50ms non-preemptible critical section violated 2 ms preempt threshold > starting at snd_pcm_action_lock_irq+0x1b/0x1d0 [snd_pcm] and ending at > snd_pcm_action_lock_irq+0x65/0x1d0 [snd_pcm] > Trace has this: > [<f9239b09>] snd_pcm_playback_ioctl1+0x49/0x2f0 [snd_pcm] > So maybe this too is ioctl related (non-educated guess)?
If it's SNDRV_PCM_IOCTL_PREPARE, I'm modifying the relevant code with rwsem instead of rwlock. But it's still in BKL of ioctl. Do we need to unlock internally?
Takashi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |