From: Anton Blanchard <anton@samba.org>
To: Arnd Bergmann <arnd@arndb.de>
Cc: linuxppc-dev@lists.ozlabs.org, paulus@samba.org
Subject: Re: [PATCH 1/2] powerpc: Add 64bit optimised memcmp
Date: Wed, 21 Jan 2015 23:06:39 +1100 [thread overview]
Message-ID: <20150121230639.081d6dcd@kryten> (raw)
In-Reply-To: <3008920.kfIvkVJRyU@wuerfel>
Hi Arnd,
> Would it help to also add a way for an architecture to override
> memcmp_pages() with its own implementation? That way you could
> skip the unaligned part, hardcode the loop counter and avoid the
> preempt_disable() in kmap_atomic().
Good idea. We could also have a generic implementation that did long
comparisons, so everyone would get a decent speed up.
Anton
next prev parent reply other threads:[~2015-01-21 12:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-21 1:27 [PATCH 1/2] powerpc: Add 64bit optimised memcmp Anton Blanchard
2015-01-21 1:27 ` [PATCH 2/2] powerpc: Add memcmp testcase Anton Blanchard
2015-01-21 9:26 ` [PATCH 1/2] powerpc: Add 64bit optimised memcmp Arnd Bergmann
2015-01-21 12:06 ` Anton Blanchard [this message]
-- strict thread matches above, loose matches on Subject: below --
2015-01-09 1:56 Anton Blanchard
2015-01-09 10:06 ` David Laight
2015-01-12 0:55 ` Anton Blanchard
2015-01-12 6:55 ` Joakim Tjernlund
2015-01-12 9:45 ` David Laight
2015-01-09 11:01 ` Adhemerval Zanella
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