From: Keith Owens <kaos@sgi.com>
To: linux-mips@linux-mips.org
Subject: Re: [RFC] synchronized CPU count registers on SMP machines
Date: Thu, 05 Jun 2003 10:18:28 +1000 [thread overview]
Message-ID: <9636.1054772308@ocs3.intra.ocs.com.au> (raw)
In-Reply-To: Your message of "Wed, 04 Jun 2003 15:39:30 MST." <20030604153930.H19122@mvista.com>
On Wed, 4 Jun 2003 15:39:30 -0700,
Jun Sun <jsun@mvista.com> wrote:
>There are many benefits of having perfectly synchronized CPU
>count registers on SMP machines.
>
>I wonder if this is something which have been done before,
>and if this is feasible.
IA64 has to do this, arch/ia64/kernel/smpboot.c:ia64_sync_itc. That
function is only called at boot time, but there have been discussions
about calling it regularly to resync the itc values, like NTP. Of
course, it has no chance of working if you install cpus with different
itc frequencies.
next prev parent reply other threads:[~2003-06-05 0:18 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-04 22:39 [RFC] synchronized CPU count registers on SMP machines Jun Sun
2003-06-04 22:51 ` Michael Uhler
2003-06-04 22:51 ` Michael Uhler
2003-06-04 23:44 ` Jun Sun
2003-06-04 23:15 ` Ralf Baechle
2003-06-04 23:46 ` Jun Sun
2003-06-05 0:12 ` Ralf Baechle
2003-06-05 1:38 ` Jun Sun
2003-06-05 8:09 ` Dominic Sweetman
2003-06-05 8:48 ` Ralf Baechle
2003-06-05 16:53 ` Jun Sun
2003-06-05 20:06 ` Greg Lindahl
2003-06-05 10:45 ` Alan Cox
2003-06-05 8:55 ` Kevin D. Kissell
2003-06-05 8:55 ` Kevin D. Kissell
2003-06-05 8:51 ` Ralf Baechle
2003-06-05 11:08 ` Maciej W. Rozycki
2003-06-05 0:18 ` Keith Owens [this message]
[not found] <ralf@linux-mips.org>
2003-06-05 9:23 ` Tor Arntsen
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