Messages in this thread |  | | | Date | Fri, 21 Jan 2005 01:08:22 -0800 | | From | George Anzinger <> | | Subject | Re: [PATCH] to fix xtime lock for in the RT kernel patch |
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Ingo Molnar wrote: > * George Anzinger <george@mvista.com> wrote: > > >>What I am suggesting is spliting the mark code so that it would only >>grap the offset (current TSC in most systems) during interrupt >>processing. Applying this would be done later in the thread. Since >>it is not applying the offset, the xtime_lock would not need to be >>taken. > > > ok, you are right, and this would be fine with me. Wanna take a shot at > it? I've uploaded the -03 patch which is my most current tree. (with the > do_timer() moving done already.) I've reviewed the TSC offset codepath > again and i'm not sure where i got the 10 usecs from ... it's a pretty > cheap codepath that can be done in the direct interrupt just fine. > Tomorrow, uh, later today. Need some sleep now... -- George Anzinger george@mvista.com High-res-timers: http://sourceforge.net/projects/high-res-timers/
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