Messages in this thread |  | | Date | Fri, 7 Dec 2007 18:57:54 +0100 | | From | Ingo Molnar <> | | Subject | Re: [PATCH] scheduler: fix x86 regression in native_sched_clock |
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* Guillaume Chazarain <guichaz@yahoo.fr> wrote:
> Le Fri, 7 Dec 2007 15:54:18 +0100, > Ingo Molnar <mingo@elte.hu> a écrit : > > > This is a version that > > is supposed fix all known aspects of TSC and frequency-change > > weirdnesses. > > Tested it with frequency changes, the clock is as smooth as I like it > :-)
ok, great :-)
> The only remaining sched_clock user in need of conversion seems to be > lockdep.
yeah - for CONFIG_LOCKSTAT - but that needs to be done even more carefully, due to rq->lock being lockdep-checked. We can perhaps try a lock-less cpu_clock() version - other CPUs are not supposed to update rq->clock.
> Great work.
thanks. I do get the impression that most of this can/should wait until 2.6.25. The patches look quite dangerous.
Ingo -- 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/
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