linux-kernel - Re: tickless timer support on non-x86

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Message-ID: <8461.1180748634@turing-police.cc.vt.edu>
Date:	Fri, 01 Jun 2007 21:43:54 -0400
From:	Valdis.Kletnieks@...edu
To:	Andrey Vul <andrey.vul@...il.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: tickless timer support on non-x86

On Fri, 01 Jun 2007 18:20:02 EDT, Andrey Vul said:
> I want to use the tickless timer features in 2.6.21, but
> unfortunately, the dependency for tickless timers is
> GENERIC_CLOCKEVENTS (and tickless is only in arch/i386).
> 
> Any workarounds or solutions for non-x86 people?
> 
> My CPU is AMD Turion ML-34.

If that AMD is running a 32-bit kernel, the code already in the kernel
should work just fine (barring hardware issues like busticated HPET/timer
and so on).  If it doesn't work, we should debug that issue.

If you're running a 64-bit kernel, you might want to check here:

http://www.tglx.de/projects/hrtimers/

The 2.6.22-rc3-hrt2 patch series can be 'quilt'ed onto a -rc3-mmm1 tree
with about 20 minutes of work fixing a few trivial rejects (2 or 3 patches
already in -mm, and another 2 or 3 trivial rejectts...)

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