ndno72-davinci at yahoo.com
Wed Aug 15 14:35:59 CDT 2007
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.
----- Original Message ----
From: Kevin Hilman <khilman at mvista.com>
To: Dirk Behme <dirk.behme at googlemail.com>
Cc: Andy Ngo <ndno72-davinci at yahoo.com>; "davinci-linux-open-source @linux.davincidsp.com" <davinci-linux-open-source at 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:
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.)
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