From: Alex Buell <alex.buell@munted.org.uk>
To: sparclinux@vger.kernel.org
Subject: Re: SPARC32 SMP IRQ15 question
Date: Wed, 22 Dec 2010 20:23:56 +0000 [thread overview]
Message-ID: <1293049436.12085.3.camel@lithium> (raw)
In-Reply-To: <4D0A2102.8030100@gaisler.com>
On Wed, 2010-12-22 at 11:53 -0800, David Miller wrote:
> > Rather than specialising it for LEON, why not just test for CASA
> > availability and use it if it available?
>
> Run time detection of this is going to really be terrible.
>
> Lots of cmpxchg() uses are inline, and we'll have to implement
> it out-of-line and patch the call instructions dynamically.
>
> LEON is the only chip that can do the instruction and we already
> do a special LEON specific build.
Inlines do save a lot of time, so I guess you're right there's no point.
But I think changing the way IRQ15/IRQ14 interrupt works could be an
extra bonus.
--
Tactical Nuclear Kittens
next prev parent reply other threads:[~2010-12-22 20:23 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-16 14:24 SPARC32 SMP IRQ15 question Daniel Hellstrom
2010-12-21 21:02 ` David Miller
2010-12-21 22:44 ` Jiri Gaisler
2010-12-22 3:54 ` David Miller
2010-12-22 9:19 ` Alex Buell
2010-12-22 9:51 ` Jiri Gaisler
2010-12-22 12:27 ` Daniel Hellstrom
2010-12-22 19:53 ` David Miller
2010-12-22 19:56 ` David Miller
2010-12-22 20:23 ` Alex Buell [this message]
2010-12-22 22:28 ` David Miller
2010-12-26 12:34 ` Kjetil Oftedal
2010-12-26 14:44 ` Jiri Gaisler
2010-12-27 1:55 ` David Miller
2010-12-27 17:28 ` crn
2011-01-03 14:14 ` Daniel Hellstrom
2011-01-03 14:19 ` Daniel Hellstrom
2011-01-26 17:02 ` Daniel Hellstrom
2011-01-26 19:52 ` David Miller
2011-01-26 21:28 ` daniel
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=1293049436.12085.3.camel@lithium \
--to=alex.buell@munted.org.uk \
--cc=sparclinux@vger.kernel.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.