From: Peter Zijlstra <peterz@infradead.org>
To: svaidy@linux.vnet.ibm.com
Cc: Suresh Siddha <suresh.b.siddha@intel.com>,
Ingo Molnar <mingo@redhat.com>,
LKML <linux-kernel@vger.kernel.org>,
"Ma, Ling" <ling.ma@intel.com>,
"Zhang, Yanmin" <yanmin_zhang@linux.intel.com>,
ego@in.ibm.com
Subject: Re: [patch] sched: fix SMT scheduler regression in find_busiest_queue()
Date: Tue, 16 Feb 2010 19:48:55 +0100 [thread overview]
Message-ID: <1266346135.9432.370.camel@laptop> (raw)
In-Reply-To: <20100216182346.GA19327@dirshya.in.ibm.com>
On Tue, 2010-02-16 at 23:55 +0530, Vaidyanathan Srinivasan wrote:
> The sched_domain will be rebuilt with the sched_group_cpus()
> representing only online siblings right? sched_group_cpus(group) will
> always be a subset of cpu_active_mask. Can please explain your
> comment.
__build_*_sched_domain() seems to only rebuild the sd->span, not the
sched_group's mask, cpu_to_*_group() only picks an existing group based
on the cpumask passed in, it doesn't change sg->cpumask afaict.
That is also the reason we drag load_balance_tmpmask all through
load_balance() afaict.
next prev parent reply other threads:[~2010-02-16 18:49 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-13 1:14 [patch] sched: fix SMT scheduler regression in find_busiest_queue() Suresh Siddha
2010-02-13 1:31 ` change in sched cpu_power causing regressions with SCHED_MC Suresh Siddha
2010-02-13 10:36 ` Peter Zijlstra
2010-02-13 10:42 ` Peter Zijlstra
2010-02-13 18:37 ` Vaidyanathan Srinivasan
2010-02-13 18:49 ` Suresh Siddha
2010-02-13 18:39 ` Vaidyanathan Srinivasan
2010-02-19 2:16 ` Suresh Siddha
2010-02-19 12:32 ` Arun R Bharadwaj
2010-02-19 13:03 ` Vaidyanathan Srinivasan
2010-02-19 19:15 ` Suresh Siddha
2010-02-19 14:05 ` Peter Zijlstra
2010-02-19 18:36 ` Suresh Siddha
2010-02-19 19:47 ` Peter Zijlstra
2010-02-19 19:50 ` Suresh Siddha
2010-02-19 20:02 ` Peter Zijlstra
2010-02-20 1:13 ` Suresh Siddha
2010-02-22 18:50 ` Peter Zijlstra
2010-02-24 0:13 ` Suresh Siddha
2010-02-24 17:43 ` Peter Zijlstra
2010-02-24 19:31 ` Suresh Siddha
2010-02-26 10:24 ` [tip:sched/core] sched: Fix SCHED_MC regression caused by change in sched cpu_power tip-bot for Suresh Siddha
2010-02-26 14:55 ` tip-bot for Suresh Siddha
2010-02-19 19:52 ` change in sched cpu_power causing regressions with SCHED_MC Peter Zijlstra
2010-02-13 18:33 ` Vaidyanathan Srinivasan
2010-02-13 18:27 ` [patch] sched: fix SMT scheduler regression in find_busiest_queue() Vaidyanathan Srinivasan
2010-02-13 18:39 ` Suresh Siddha
2010-02-13 18:56 ` Vaidyanathan Srinivasan
2010-02-13 20:25 ` Vaidyanathan Srinivasan
2010-02-13 20:36 ` Vaidyanathan Srinivasan
2010-02-14 10:11 ` Peter Zijlstra
2010-02-15 12:35 ` Vaidyanathan Srinivasan
2010-02-15 13:00 ` Peter Zijlstra
2010-02-16 15:59 ` Vaidyanathan Srinivasan
2010-02-16 17:28 ` Peter Zijlstra
2010-02-16 18:25 ` Vaidyanathan Srinivasan
2010-02-16 18:46 ` Vaidyanathan Srinivasan
2010-02-16 18:48 ` Peter Zijlstra [this message]
2010-02-15 22:29 ` Peter Zijlstra
2010-02-16 14:16 ` [tip:sched/urgent] sched: Fix " tip-bot for Suresh Siddha
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