Hi Kevin, How hard is it to backport the HRT support into the GIT tree? I guess I have to wait until it's available in the GIT tree because I'm really a Linux kernel newbie. I see a bunch of patches at Ingo Molnar's website: http://people.redhat.com/mingo/realtime-preempt/older but I doubt it if I can directly use the 2.6.20 one to patch the 2.6.20 GIT tree.
Thanks, Andy ----- Original Message ---- From: Kevin Hilman <[EMAIL PROTECTED]> To: Dirk Behme <[EMAIL PROTECTED]> Cc: Andy Ngo <[EMAIL PROTECTED]>; "davinci-linux-open-source @linux.davincidsp.com" <davinci-linux-open-source@linux.davincidsp.com> Sent: Wednesday, August 15, 2007 10:23:17 AM Subject: Re: HR timers Dirk Behme wrote: > Andy Ngo wrote: >> I'm trying to enable high resolution timers support in the kernel >> (2.6.20 GIT tree) but I don't see the option via the kernel >> configuration. I went through all the categories without any luck. >> Do I need a special patch or something like that to enable HR timers? > > Please correct me if I'm wrong, but I think HR timers are part of -rt > patch set: > > http://rt.wiki.kernel.org/index.php/High_resolution_timers That's mostly right, but each platform also has to have a clocksource and clockevent for HRT and dyntick to work correctly for that platform. I have already done the clocksource/clockevent stuff for DaVinci and it's in the mainline kernel as of 2.6.22, but not backported to davinci git (but should be easy.) Kevin
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