From: Andi Kleen <ak@suse.de>
To: Nick Piggin <npiggin@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>,
David Howells <dhowells@redhat.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux Memory Management List <linux-mm@kvack.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [patch] generic rwsems
Date: Fri, 13 Apr 2007 12:53:49 +0200 [thread overview]
Message-ID: <200704131253.49301.ak@suse.de> (raw)
In-Reply-To: <20070413100416.GC31487@wotan.suse.de>
On Friday 13 April 2007 12:04:16 Nick Piggin wrote:
> OK, this patch is against 2.6.21-rc6 + Mathieu's atomic_long patches.
>
> Last time this came up I was asked to get some numbers, so here are
> some in the changelog, captured with a simple kernel module tester.
> I got motivated again because of the MySQL/glibc/mmap_sem issue.
>
> This patch converts all architectures to a generic rwsem implementation,
> which will compile down to the same code for i386, or powerpc, for
> example, and will allow some (eg. x86-64) to move away from spinlock
> based rwsems.
>
> Comments?
Fine for me from the x86-64 side. Some more validation with a test suite
would be good though.
-Andi
WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <ak@suse.de>
To: Nick Piggin <npiggin@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>,
David Howells <dhowells@redhat.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux Memory Management List <linux-mm@kvack.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [patch] generic rwsems
Date: Fri, 13 Apr 2007 12:53:49 +0200 [thread overview]
Message-ID: <200704131253.49301.ak@suse.de> (raw)
In-Reply-To: <20070413100416.GC31487@wotan.suse.de>
On Friday 13 April 2007 12:04:16 Nick Piggin wrote:
> OK, this patch is against 2.6.21-rc6 + Mathieu's atomic_long patches.
>
> Last time this came up I was asked to get some numbers, so here are
> some in the changelog, captured with a simple kernel module tester.
> I got motivated again because of the MySQL/glibc/mmap_sem issue.
>
> This patch converts all architectures to a generic rwsem implementation,
> which will compile down to the same code for i386, or powerpc, for
> example, and will allow some (eg. x86-64) to move away from spinlock
> based rwsems.
>
> Comments?
Fine for me from the x86-64 side. Some more validation with a test suite
would be good though.
-Andi
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next prev parent reply other threads:[~2007-04-13 10:54 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-13 10:04 [patch] generic rwsems Nick Piggin
2007-04-13 10:04 ` Nick Piggin
2007-04-13 10:19 ` fastcalls, was " Christoph Hellwig
2007-04-13 10:59 ` Nick Piggin
2007-04-13 10:25 ` Nick Piggin
2007-04-13 10:25 ` Nick Piggin
2007-04-13 11:44 ` David Howells
2007-04-13 11:44 ` David Howells
2007-04-13 12:13 ` Christoph Hellwig
2007-04-13 12:13 ` Christoph Hellwig
2007-04-13 10:53 ` Andi Kleen [this message]
2007-04-13 10:53 ` Andi Kleen
2007-04-13 11:20 ` Nick Piggin
2007-04-13 11:20 ` Nick Piggin
2007-04-13 12:09 ` David Howells
2007-04-13 12:09 ` David Howells
2007-04-13 12:43 ` Nick Piggin
2007-04-13 12:43 ` Nick Piggin
2007-04-13 13:22 ` William Lee Irwin III
2007-04-13 13:22 ` William Lee Irwin III
2007-04-13 13:31 ` David Howells
2007-04-13 13:31 ` David Howells
2007-04-13 14:03 ` Nick Piggin
2007-04-13 14:03 ` Nick Piggin
2007-04-13 14:29 ` Eric Dumazet
2007-04-13 14:29 ` Eric Dumazet
2007-04-13 14:49 ` David Howells
2007-04-13 14:49 ` David Howells
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