lkml.org 
[lkml]   [2010]   [Aug]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] [RFCv2] notify userspace about time changes
On Thu, Aug 19, 2010 at 11:50, Peter Zijlstra <peterz@infradead.org> wrote:
> On Wed, 2010-08-18 at 16:53 -0700, Andrew Morton wrote:
>>
>> Such applications might be better served via a wake-me-at-this-time
>> syscall instead of a sleep-me-for-this-long syscall.  Although such a
>> thing is less general.
>>
> We have timer_create(.clockid = CLOCK_REALTIME) for such things, no?

Not for repeating events like cron needs.

Say we want to wakeup at 3pm, now it's 4pm, so we schedule it in 23
hours. Now the system time changes to 2pm, and we would expect to
wakeup in one hour, but we take 25.

Kay
--
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: 2010-08-19 12:55    [from the cache]
©2003-2011 Jasper Spaans