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
next prev parent 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
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