lkml.org 
[lkml]   [2005]   [Jun]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [RFC] Driver writer's guide to sleeping
Date
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
-
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/

\
 
 \ /
  Last update: 2005-06-26 21:46    [W:0.036 / U:0.088 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site