Re: [RFC] Driver writer's guide to sleeping

[Oliver Neukum <oliver@neukum.org>]

Am Samstag, 25. Juni 2005 13:54 schrieb Denis Vlasenko:
> On Saturday 25 June 2005 14:29, Oliver Neukum wrote:
> > On Sat, 25 Jun 2005, Denis Vlasenko wrote:
> > 
> > > schedule_timeout(timeout)
> > > 	Whee, it has a comment! :)
> > >  * %TASK_UNINTERRUPTIBLE - at least @timeout jiffies are guaranteed to
> > >  * pass before the routine returns. The routine will return 0
> [snip]
> > > 	Thus:
> > > 	set_current_state(TASK_[UN]INTERRUPTIBLE);
> > > 	schedule_timeout(timeout_in_jiffies)
> > > 
> > > msleep(ms)
> > > 	Sleeps at least ms msecs.
> > > 	Equivalent to:
> > > 	set_current_state(TASK_UNINTERRUPTIBLE);
> > > 	schedule_timeout(timeout)
> > 
> > If and only if you are not on any waitqueue. You may not be interrupted
> > by a signal, but you still can be woken with an explicit wake_up()
> 
> Like this?

Yes, but we have macros for that. You are supposed to use them.

	Regards
		Oliver