All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Hugh Dickins <hughd@google.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: mmotm threatens ppc preemption again
Date: Wed, 18 May 2011 16:29:55 -0700	[thread overview]
Message-ID: <4DD45673.3010007@goop.org> (raw)
In-Reply-To: <1301603918.2407.70.camel@pasglop>

On 03/31/2011 01:38 PM, Benjamin Herrenschmidt wrote:
> On Thu, 2011-03-31 at 10:21 -0700, Jeremy Fitzhardinge wrote:
>> No, its the same accessors for both, since the need to distinguish them
>> hasn't really come up.  Could you put a "if (preemptable()) return;"
>> guard in your implementations?
> That would be a band-aid but would probably do the trick for now
> for !-rt, tho it wouldn't do the right thing for -rt... 

Hi Ben,

Have you had a chance to look at doing a workaround/fix for these power
problems?  I believe that's the only holdup to putting in the batching
changes.  I'd like to get them in for the next window if possible, since
they're a pretty significant performance win for us.

Thanks,
    J

  reply	other threads:[~2011-05-18 23:39 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-20  4:11 mmotm threatens ppc preemption again Hugh Dickins
2011-03-20 23:53 ` Benjamin Herrenschmidt
2011-03-21  1:41   ` Hugh Dickins
2011-03-21  1:50     ` Benjamin Herrenschmidt
2011-03-21  2:20       ` Hugh Dickins
2011-03-21  2:22         ` Benjamin Herrenschmidt
2011-03-30 20:53           ` Andrew Morton
2011-03-30 21:07             ` Jeremy Fitzhardinge
2011-03-31  0:52               ` Benjamin Herrenschmidt
2011-03-31 17:21                 ` Jeremy Fitzhardinge
2011-03-31 20:38                   ` Benjamin Herrenschmidt
2011-05-18 23:29                     ` Jeremy Fitzhardinge [this message]
2011-03-21 11:24   ` Jeremy Fitzhardinge
2011-03-21 22:52     ` Benjamin Herrenschmidt
2011-03-22 13:34       ` Jeremy Fitzhardinge

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=4DD45673.3010007@goop.org \
    --to=jeremy@goop.org \
    --cc=a.p.zijlstra@chello.nl \
    --cc=akpm@linux-foundation.org \
    --cc=benh@kernel.crashing.org \
    --cc=hughd@google.com \
    --cc=linuxppc-dev@lists.ozlabs.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.