From: "Gregory Haskins" <ghaskins@novell.com>
To: "Steven Rostedt" <rostedt@goodmis.org>,
"LKML" <linux-kernel@vger.kernel.org>
Cc: "Peter Zijlstra" <a.p.zijlstra@chello.nl>,
"Ingo Molnar" <mingo@elte.hu>,
"Christoph Lameter" <clameter@sgi.com>
Subject: Re: [PATCH v3 17/17] (Avoid overload)
Date: Sat, 17 Nov 2007 12:46:54 -0500 [thread overview]
Message-ID: <473EE2BE.BA47.005A.0@novell.com> (raw)
In-Reply-To: <20071117063318.GA31442@goodmis.org>
>>> On Sat, Nov 17, 2007 at 1:33 AM, in message
<20071117063318.GA31442@goodmis.org>, Steven Rostedt <rostedt@goodmis.org>
wrote:
> - if ((p->prio >= rq->rt.highest_prio)
> - && (p->nr_cpus_allowed > 1)) {
> + if (unlikely(rt_task(rq->curr))) {
> int cpu = find_lowest_rq(p);
>
> return (cpu == -1) ? task_cpu(p) : cpu;
We probably should leave the "p->nr_cpus_allowed > 1" in the conditional since it doesn't make sense to look if the task can't go anywhere.
-Greg
next prev parent reply other threads:[~2007-11-17 17:51 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-17 6:21 [PATCH v3 00/17] New RT Task Balancing -v3 Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 01/17] Add rt_nr_running accounting Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 02/17] track highest prio queued on runqueue Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 03/17] push RT tasks Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 04/17] RT overloaded runqueues accounting Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 05/17] pull RT tasks Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 06/17] wake up balance RT Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 07/17] disable CFS RT load balancing Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 08/17] Cache cpus_allowed weight for optimizing migration Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 09/17] Consistency cleanup for this_rq usage Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 10/17] Remove some CFS specific code from the wakeup path of RT tasks Steven Rostedt
2007-11-17 17:35 ` Gregory Haskins
2007-11-17 18:51 ` Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 11/17] RT: Break out the search function Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 12/17] Allow current_cpu to be included in search Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 13/17] RT: Pre-route RT tasks on wakeup Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 14/17] Optimize our cpu selection based on topology Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 15/17] RT: Optimize rebalancing Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 16/17] Fix schedstat handling Steven Rostedt
2007-11-17 17:40 ` Gregory Haskins
2007-11-17 18:52 ` Steven Rostedt
2007-11-17 6:21 ` [PATCH v3 17/17] --- kernel/sched_rt.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) Steven Rostedt
2007-11-17 6:33 ` [PATCH v3 17/17] (Avoid overload) Steven Rostedt
2007-11-17 17:42 ` Gregory Haskins
2007-11-17 18:55 ` Steven Rostedt
2007-11-17 17:46 ` Gregory Haskins [this message]
2007-11-19 16:34 ` [PATCH] RT: restore the migratable conditional Gregory Haskins
2007-11-17 8:14 ` [PATCH v3 00/17] New RT Task Balancing -v3 Jon Masters
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