From: Jes Sorensen <jes@sgi.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [PATCH] SN2 user-MMIO CPU migration
Date: Tue, 24 Jan 2006 09:14:28 +0000 [thread overview]
Message-ID: <43D5EFF4.9090206@sgi.com> (raw)
In-Reply-To: <20060118163305.Y42462@chenjesu.americas.sgi.com>
Luck, Tony wrote:
> Thinking about this a bit more, wouldn't it be better to do this
> work in the rebalance code that is making the decision to move
> the process. The earlier argument that this would sometimes
> waste time because the process might not actually move doesn't
> sound so strong ... we context switch frequently, we move processes
> rarely. Doing some work that may be wasted in the rare path sounds
> better than always doing work in the common path.
Alternatively one could make platform_switch_from() a wrapper around
a function pointer that is only set when in use. Then it would be a
load and a compare and the rest will be predicated away on non SN
hardware in the generic kernel.
Cheers,
Jes
next prev parent reply other threads:[~2006-01-24 9:14 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-20 0:06 [PATCH] SN2 user-MMIO CPU migration Brent Casavant
2006-01-20 0:06 ` Brent Casavant
2006-01-20 2:18 ` Jesse Barnes
2006-01-20 2:18 ` Jesse Barnes
2006-01-20 6:47 ` Brent Casavant
2006-01-20 6:47 ` Brent Casavant
2006-01-20 17:36 ` Jesse Barnes
2006-01-20 17:36 ` Jesse Barnes
2006-01-20 20:01 ` Brent Casavant
2006-01-20 20:01 ` Brent Casavant
2006-01-20 13:26 ` Jack Steiner
2006-01-20 13:26 ` Jack Steiner
2006-01-20 17:31 ` Jesse Barnes
2006-01-20 17:31 ` Jesse Barnes
2006-01-20 19:00 ` Jack Steiner
2006-01-20 19:00 ` Jack Steiner
2006-01-20 8:36 ` Ingo Molnar
2006-01-20 8:36 ` Ingo Molnar
2006-01-20 16:14 ` Brent Casavant
2006-01-20 16:14 ` Brent Casavant
2006-01-24 0:33 ` Brent Casavant
2006-01-24 0:48 ` Luck, Tony
2006-01-24 1:23 ` Brent Casavant
2006-01-24 1:42 ` Keith Owens
2006-01-24 3:41 ` Grant Grundler
2006-01-24 6:30 ` Brent Casavant
2006-01-24 6:41 ` Brent Casavant
2006-01-24 7:04 ` Grant Grundler
2006-01-24 9:02 ` Ingo Molnar
2006-01-24 9:14 ` Jes Sorensen [this message]
2006-01-24 12:10 ` Robin Holt
2006-01-24 16:40 ` Grant Grundler
2006-01-24 16:52 ` Brent Casavant
2006-01-24 16:57 ` Brent Casavant
2006-01-24 17:00 ` Robin Holt
2006-01-24 17:33 ` Luck, Tony
2006-01-24 18:42 ` Grant Grundler
2006-01-24 21:12 ` Brent Casavant
2006-01-24 21:41 ` Ingo Molnar
2006-01-24 21:43 ` Chen, Kenneth W
2006-01-24 21:51 ` Luck, Tony
2006-01-24 22:04 ` Brent Casavant
2006-01-24 22:07 ` Chen, Kenneth W
2006-01-24 22:12 ` Brent Casavant
2006-01-24 22:19 ` Chen, Kenneth W
2006-01-24 22:31 ` Chen, Kenneth W
2006-01-24 22:41 ` Brent Casavant
2006-01-24 23:25 ` Chen, Kenneth W
2006-01-24 23:28 ` Brent Casavant
2006-01-24 23:36 ` Chen, Kenneth W
2006-01-24 23:54 ` Brent Casavant
2006-01-25 0:10 ` Brent Casavant
2006-01-25 0:29 ` Chen, Kenneth W
2006-01-25 6:27 ` Keith Owens
2006-01-25 9:04 ` Chen, Kenneth W
2006-01-25 9:24 ` Chen, Kenneth W
2006-01-25 17:04 ` Brent Casavant
2006-01-25 17:45 ` Brent Casavant
2006-01-25 17:48 ` Brent Casavant
2006-01-25 19:01 ` Chen, Kenneth W
2006-01-25 19:15 ` Brent Casavant
2006-01-25 19:43 ` Jack Steiner
2006-01-25 22:49 ` Brent Casavant
2006-01-25 23:09 ` Brent Casavant
2006-01-25 23:49 ` Brent Casavant
2006-01-25 23:56 ` Chen, Kenneth W
2006-01-26 1:06 ` Luck, Tony
2006-01-26 1:31 ` Prarit Bhargava
2006-01-26 2:43 ` Keith Owens
2006-01-26 4:40 ` Brent Casavant
2006-01-26 16:29 ` Brent Casavant
2006-01-26 16:41 ` Prarit Bhargava
2006-01-26 19:29 ` Brent Casavant
2006-01-26 19:54 ` Luck, Tony
2006-01-26 20:28 ` Brent Casavant
2006-01-26 21:05 ` Luck, Tony
2006-01-26 21:34 ` Prarit Bhargava
2006-01-26 22:11 ` Luck, Tony
2006-01-26 23:08 ` Luck, Tony
2006-01-26 23:21 ` Prarit Bhargava
2006-01-26 23:44 ` Prarit Bhargava
2006-01-27 0:07 ` Chen, Kenneth W
2006-01-27 14:01 ` Prarit Bhargava
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