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Re: [patch] CFS scheduler, -v19

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To: Linus Torvalds <torvalds@...>
Cc: Ian Kent <raven@...>, Chuck Ebbert <cebbert@...>, Bill Davidsen <davidsen@...>, <linux-kernel@...>
Date: Thursday, July 19, 2007 - 4:16 am

* Linus Torvalds <torvalds@linux-foundation.org> wrote:


ah, i didnt notice that automount mixed up timespec with timeval! That 
is nasty and the tv_nsec field (which really is ts_usec to 
pthread_cond_timewait()) must stay cleared - or rather, to avoid bugs of 
this type, a timespec variable should be used for all this.


yeah, i'll generalize it, but our internal getnstimeofday() used on most 
architectures is using __get_realtime_clock_ns(), and the patch you 
attached already adds the second-overflow logic to it.

there are two versions of getnstimeofday(), a TIME_INTERPOLATION one and 
a !TIME_INTERPOLATION one. TIME_INTERPOLATION is only used on ia64 at 
the moment - and that one indeed does not have the second overflow 
logic.


ok, i'll do something clean.

	Ingo
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Messages in current thread:
[patch] CFS scheduler, -v19, Ingo Molnar, (Fri Jul 6, 1:33 pm)
Re: [patch] CFS scheduler, -v19, Ed Tomlinson, (Sat Jul 14, 1:19 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Mon Jul 16, 5:17 am)
Re: [patch] CFS scheduler, -v19, Ed Tomlinson, (Mon Jul 16, 7:10 am)
Re: [patch] CFS scheduler, -v19, Mike Galbraith, (Sun Jul 15, 1:25 am)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Mon Jul 16, 4:00 am)
Re: [patch] CFS scheduler, -v19, Markus, (Sun Jul 15, 8:53 am)
Re: [patch] CFS scheduler, -v19, Mike Galbraith, (Sun Jul 15, 3:46 pm)
Re: [patch] CFS scheduler, -v19, Markus, (Sun Jul 15, 5:11 pm)
Re: [patch] CFS scheduler, -v19, Mike Galbraith, (Mon Jul 16, 2:42 am)
Re: [patch] CFS scheduler, -v19, Markus, (Sat Jul 14, 7:34 am)
Re: [patch] CFS scheduler, -v19, Markus, (Sat Jul 14, 11:11 am)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Mon Jul 16, 5:41 am)
Re: [patch] CFS scheduler, -v19, Markus, (Mon Jul 16, 1:59 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Tue Jul 17, 3:37 am)
Re: [patch] CFS scheduler, -v19, Markus, (Tue Jul 17, 9:06 am)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Tue Jul 17, 1:06 pm)
Re: [patch] CFS scheduler, -v19, Markus, (Tue Jul 17, 3:42 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Tue Jul 17, 4:09 pm)
Re: [patch] CFS scheduler, -v19, Linus Torvalds, (Tue Jul 17, 4:37 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Tue Jul 17, 4:43 pm)
Re: [patch] CFS scheduler, -v19, Markus, (Tue Oct 16, 8:02 pm)
Re: [patch] CFS scheduler, -v19, Markus, (Thu Aug 9, 1:34 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Fri Aug 10, 3:46 am)
Re: [patch] CFS scheduler, -v19, Markus, (Tue Aug 14, 1:15 pm)
Re: [patch] CFS scheduler, -v19, Markus, (Fri Jul 20, 6:26 pm)
Re: [patch] CFS scheduler, -v19, Markus, (Tue Jul 17, 6:03 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Tue Jul 17, 1:13 pm)
Re: [patch] CFS scheduler, -v19, Mike Galbraith, (Tue Jul 10, 4:08 am)
Re: [patch] CFS scheduler, -v19, Bill Davidsen, (Wed Jul 11, 1:26 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Wed Jul 11, 4:55 pm)
Re: [patch] CFS scheduler, -v19, Bill Davidsen, (Fri Jul 13, 5:19 pm)
Re: [patch] CFS scheduler, -v19, Chuck Ebbert, (Mon Jul 16, 5:34 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Mon Jul 16, 5:55 pm)
Re: [patch] CFS scheduler, -v19, Ian Kent, (Tue Jul 17, 1:01 am)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Tue Jul 17, 3:45 am)
Re: [patch] CFS scheduler, -v19, Linus Torvalds, (Wed Jul 18, 12:03 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Thu Jul 19, 4:16 am)
Re: [patch] CFS scheduler, -v19, Bill Davidsen, (Wed Jul 18, 5:37 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Thu Jul 19, 10:32 am)
Re: [patch] CFS scheduler, -v19, Bill Davidsen, (Thu Jul 19, 10:32 pm)
Re: [patch] CFS scheduler, -v19, Bill Davidsen, (Thu Jul 19, 1:06 pm)
Re: [patch] CFS scheduler, -v19, Bill Davidsen, (Thu Jul 19, 1:26 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Thu Jul 19, 1:42 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Thu Jul 19, 1:17 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Thu Jul 19, 1:10 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Thu Jul 19, 4:53 am)
Re: [patch] CFS scheduler, -v19, Ian Kent, (Wed Jul 18, 1:31 pm)
RE: [patch] CFS scheduler, -v19, David Schwartz, (Tue Jul 17, 5:16 pm)
RE: [patch] CFS scheduler, -v19, Ian Kent, (Wed Jul 18, 1:59 am)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Wed Jul 18, 3:54 am)
Re: [patch] CFS scheduler, -v19, Linus Torvalds, (Wed Jul 18, 1:23 pm)
Re: [patch] CFS scheduler, -v19, Bill Davidsen, (Wed Jul 18, 9:50 am)
Re: [patch] CFS scheduler, -v19, Chuck Ebbert, (Tue Jul 17, 12:30 pm)
Re: [patch] CFS scheduler, -v19, Ian Kent, (Tue Jul 17, 7:17 am)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Tue Jul 17, 1:16 pm)
Re: [patch] CFS scheduler, -v19, Bill Davidsen, (Tue Jul 17, 9:24 pm)
Re: [patch] CFS scheduler, -v19, Ian Kent, (Wed Jul 18, 2:19 am)
Re: [patch] CFS scheduler, -v19, Bill Davidsen, (Tue Jul 17, 12:22 am)
Re: [patch] CFS scheduler, -v19, Bill Davidsen, (Thu Jul 12, 8:41 am)
Re: [patch] CFS scheduler, -v19, Willy Tarreau, (Sun Jul 8, 1:46 pm)
Re: [patch] CFS scheduler, -v19, Ingo Molnar, (Mon Jul 9, 6:39 pm)
Re: [patch] CFS scheduler, -v19, Willy Tarreau, (Tue Jul 17, 5:44 pm)
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