Messages in this thread | | | Date | Tue, 13 Jul 2004 02:44:23 -0700 | From | Andrew Morton <> | Subject | Re: [linux-audio-dev] Re: [announce] [patch] Voluntary Kernel Preemption Patch |
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Takashi Iwai <tiwai@suse.de> wrote: > > > You can do unlock_kernel()/lock_kernel() in soundcore_open(). > > I remember ioctl() is also in lock_kernel()?
yes, you'll need to do unlock_kernel/lock_kernel there too. If someone changes the rules, or otherwise calls your ioctl withoht lock_kernel() held it will reliably go BUG with spinlock debugging enabled, so make sure you test with CONFIG_DEBUG_SPINLOCK=y. - 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/
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