From: Jens Axboe <jens.axboe@oracle.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Steven Rostedt <rostedt@goodmis.org>,
Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Rusty Russell <rusty@rustcorp.com.au>,
npiggin@suse.de, Ingo Molnar <mingo@elte.hu>,
Thomas Gleixner <tglx@linutronix.de>,
Arjan van de Ven <arjan@infradead.org>
Subject: Re: [PATCH -v2] use per cpu data for single cpu ipi calls
Date: Fri, 30 Jan 2009 12:23:11 +0100 [thread overview]
Message-ID: <20090130112310.GI30821@kernel.dk> (raw)
In-Reply-To: <1233254680.4495.126.camel@laptop>
Hi,
A little late into this discussion, was nasty ill the past days.
Anyway, v2 with the suggested patches looks fine to me. That is, use
local cpu storage (and thus lose the lock) and retain the the kmalloc()
for the !wait case. That should still scale fine, as far as I can tell.
The block layer usage, for which this was originally concocted, doesn't
really care that much, since it always provides its own csd storage and
thus use the __ variant of the helper.
Peter, can you post a final complete patch for review and acks?
--
Jens Axboe
next prev parent reply other threads:[~2009-01-30 11:25 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-28 16:38 Buggy IPI and MTRR code on low memory Steven Rostedt
2009-01-28 16:41 ` Steven Rostedt
2009-01-28 16:46 ` Peter Zijlstra
2009-01-28 16:56 ` Steven Rostedt
2009-01-28 17:00 ` Peter Zijlstra
2009-01-28 17:24 ` Steven Rostedt
2009-01-28 18:20 ` Peter Zijlstra
2009-01-28 18:52 ` Steven Rostedt
2009-01-28 18:22 ` Arjan van de Ven
2009-01-28 18:34 ` Steven Rostedt
2009-01-28 21:12 ` Andrew Morton
2009-01-28 21:13 ` Andrew Morton
2009-01-28 21:23 ` Steven Rostedt
2009-01-28 22:07 ` Andrew Morton
2009-01-28 22:47 ` Steven Rostedt
2009-01-28 23:20 ` Andrew Morton
2009-01-28 23:50 ` Steven Rostedt
2009-01-28 23:25 ` Rusty Russell
2009-01-28 23:41 ` Steven Rostedt
2009-01-29 0:52 ` [PATCH] use per cpu data for single cpu ipi calls Steven Rostedt
2009-01-29 1:30 ` Andrew Morton
2009-01-29 1:56 ` Steven Rostedt
2009-01-29 8:49 ` Peter Zijlstra
2009-01-29 11:13 ` Ingo Molnar
2009-01-29 11:41 ` Peter Zijlstra
2009-01-29 13:42 ` Ingo Molnar
2009-01-29 14:07 ` Steven Rostedt
2009-01-29 15:08 ` [PATCH -v2] " Steven Rostedt
2009-01-29 15:33 ` Peter Zijlstra
2009-01-29 16:17 ` Ingo Molnar
2009-01-29 17:21 ` Linus Torvalds
2009-01-29 17:44 ` Steven Rostedt
2009-01-29 17:50 ` Steven Rostedt
2009-01-29 18:08 ` Linus Torvalds
2009-01-29 18:11 ` Steven Rostedt
2009-01-29 18:23 ` Peter Zijlstra
2009-01-29 18:31 ` Steven Rostedt
2009-01-29 18:39 ` Linus Torvalds
2009-01-29 18:44 ` Peter Zijlstra
2009-01-30 11:23 ` Jens Axboe [this message]
2009-01-30 12:32 ` [PATCH -v3] " Peter Zijlstra
2009-01-30 12:38 ` Jens Axboe
2009-01-30 12:48 ` Peter Zijlstra
2009-01-30 12:55 ` Jens Axboe
2009-01-30 12:56 ` Jens Axboe
2009-01-30 13:00 ` Peter Zijlstra
2009-01-30 13:02 ` [PATCH -v4] " Peter Zijlstra
2009-01-30 14:51 ` Ingo Molnar
2009-01-30 16:04 ` [PATCH -v3] " Linus Torvalds
2009-01-30 16:16 ` Peter Zijlstra
2009-01-31 8:44 ` Jens Axboe
2009-01-29 18:49 ` [PATCH -v2] " Ingo Molnar
2009-01-30 1:55 ` Rusty Russell
2009-01-29 17:47 ` Peter Zijlstra
2009-01-29 17:55 ` Peter Zijlstra
2009-01-29 18:08 ` Steven Rostedt
2009-01-30 1:11 ` Rusty Russell
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