From: David Howells <dhowells@redhat.com>
To: Jon Loeliger <jdl@freescale.com>
Cc: linuxppc-dev@ozlabs.org, linuxppc64-dev@ozlabs.org
Subject: Re: PATCH powerpc Merge asm-ppc*/rwsem.h
Date: Fri, 23 Sep 2005 08:32:20 +0100 [thread overview]
Message-ID: <606.1127460740@warthog.cambridge.redhat.com> (raw)
In-Reply-To: <E1EIXAI-0006Q0-OS@jdl.com>
Jon Loeliger <jdl@freescale.com> wrote:
> Merge asm-ppc*/rwsem.h into include/asm-powerpc.
> Removed smp_*mb() memory barriers from the ppc32 code
> as they are now burried in the atomic_*() functions as
> suggested by Paul, implemented by Arnd, and pushed out
> by Becky. I am not the droid you are looking for.
rwsems on ppc64 should really be using a 64-bit counter, not a 32-bit counter,
otherwise you limit the maximum number of processes to 32K-ish.
The counter should be "signed long" really.
David
next prev parent reply other threads:[~2005-09-23 7:32 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-22 19:55 PATCH powerpc Merge asm-ppc*/rwsem.h Jon Loeliger
2005-09-23 7:32 ` David Howells [this message]
2005-09-23 7:44 ` Anton Blanchard
2005-09-23 7:52 ` David Howells
2005-09-23 12:52 ` Jon Loeliger
2005-09-23 14:09 ` David Howells
2005-09-24 0:46 ` Paul Mackerras
2005-09-26 11:38 ` David Howells
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