From: Geoff Levand <geoffrey.levand@am•sony.com>
To: David Jander <david.jander@protonic•nl>
Cc: "Martin, Tim" <tim.martin@viasat•com>, linuxppc-embedded@ozlabs•org
Subject: Re: POSIX High Resolution Timers in LinuxPPC 2.4
Date: Mon, 19 Dec 2005 14:56:16 -0800 [thread overview]
Message-ID: <43A73A90.3060908@am.sony.com> (raw)
In-Reply-To: <200512191039.58149.david.jander@protonic.nl>
David Jander wrote:
> Hi Tim,
>
> On Friday 16 December 2005 23:34, Martin, Tim wrote:
>
>>Could someone give me a brief history lesson on POSIX high resolution
>>timers (e.g. timer_create() function) implemented in the Linux kernel on
>>the PowerPC 405 architecture? Specifically:
>>
>>Confirm they are in the mainline 2.6 kernel now (e.g. kernel.org)?
>>
>>Were they ever a part of the "mainline" 2.4 linuxppc kernel (e.g
>>ppc.bkbits.net)?
>>
>>If no, were they ever available as a patch? The stuff at
>>sourceforge.net/projects/high-res-timers stops at 2.4.20 and looks like it
>>was only ever working for i386, not ppc.
>
>
> I asked a related question a while back, and got no answer (yet).
> I did find this though, which you might have overlooked:
> http://prdownloads.sourceforge.net/high-res-timers/ppc-hrt-2.6.10.patch?download
>
> I am equally puzzled about whether this has made it into mainstream, is about
> to, or never will. I don't even know if it actually works.
>
You would do better to inquire on the HRT mailing list:
http://lists.sourceforge.net/lists/listinfo/high-res-timers-discourse
HRT support (from http://sourceforge.net/projects/high-res-timers/) was
never accepted to mainline. It works on Ebony (PPC440), but I guess it
is OK on others since it uses the PPC time base. I recommend you get
the latest from CVS, which is against 2.6.12. Older versions have
CVS tags.
-Geoff
prev parent reply other threads:[~2005-12-20 21:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-16 22:34 POSIX High Resolution Timers in LinuxPPC 2.4 Martin, Tim
2005-12-19 9:39 ` David Jander
2005-12-19 15:57 ` Egan
2005-12-19 22:56 ` Geoff Levand [this message]
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