On Mon, Oct 03, 2005 at 17:39:15 +0900, NAHieu wrote: > On 10/3/05, Jan Hudec <bulb@xxxxxx> wrote: > > On Mon, Oct 03, 2005 at 16:06:26 +0900, NAHieu wrote: > > > Anybody please tell me: does wake_up_interruptible() sleep? I want to > > > call wake_up_interruptible() inside an irq handler, and if it may > > > sleep, I will need to run it from a tasklet instead of executing it > > > directly. > > > > No, it does not. Nor does any other wake_up* variant. If you look at the > > code, they start with taking a spinlock and end with releasing it, so > > they can't sleep. > > > > By the way, if it did, tasklet would _not_ help you. Tasklet is still > > not a process context. > > process context? But why I need the process context here? You don't, because it does not sleep. If it did sleep, you would need process context, because you can only sleep in process context. -- Jan 'Bulb' Hudec <bulb@xxxxxx>
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