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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20150121230639.081d6dcd@kryten \
--to=anton@samba.org \
--cc=arnd@arndb.de \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=paulus@samba.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.