Hi! > > > > If so, could that function use the PIT/pmtimer/etc for working out > > > > if the TSC is bust, rather than directly using jiffies? > > > > > > there's no realiable way to figure out the TSC is bust: some CPUs > > > have a slight 'skew' between cores for example. On some systems the > > > TSC might skew between sockets. A CPU might break its TSC only once > > > some > > > > But we could still do a whitelist? > > we could, but it would have to be almost empty right now :-) Reason: Well, if it would contain at least 50% of the UP machines... that would be reasonably long list for a start. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
- Follow-Ups:
- Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers
- From: Ingo Molnar <[email protected]>
- Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers
- References:
- [patch 00/21] Highres / dynticks drop in replacement for 2.6.19-rc5-mm1
- From: Thomas Gleixner <[email protected]>
- [patch 13/19] GTOD: Mark TSC unusable for highres timers
- From: Thomas Gleixner <[email protected]>
- Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers
- From: john stultz <[email protected]>
- Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers
- From: Andi Kleen <[email protected]>
- Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers
- From: Thomas Gleixner <[email protected]>
- Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers
- From: Andrew Morton <[email protected]>
- Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers
- From: Ingo Molnar <[email protected]>
- Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers
- From: Pavel Machek <[email protected]>
- Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers
- From: Ingo Molnar <[email protected]>
- [patch 00/21] Highres / dynticks drop in replacement for 2.6.19-rc5-mm1
- Prev by Date: Re: read/write interruptible semaphores?
- Next by Date: Re: XFS filesystem performance drop in kernels 2.6.16+
- Previous by thread: Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers
- Next by thread: Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers
- Index(es):