From: Michael wang <wangyun@linux.vnet.ibm.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Juri Lelli <juri.lelli@gmail.com>
Subject: Re: [RFC PATCH] sched: make sure sched-priority after invoke idle_balance()
Date: Tue, 18 Feb 2014 10:42:51 +0800 [thread overview]
Message-ID: <5302C8AB.8070401@linux.vnet.ibm.com> (raw)
In-Reply-To: <20140217112420.GD15586@twins.programming.kicks-ass.net>
On 02/17/2014 07:24 PM, Peter Zijlstra wrote:
[snip]
>> Since idle_balance() won't happen in the loop, may be we could use:
>>
>> if p && p->sched_class == class
>> return p
>>
>> in here, let it fall down into the loop if p is idle, since that means
>> we got RT/DL and will do this anyway, could save two jump work may be?
>> (and may could combine some code below if so?)
>
> Maybe; we'd have to look at whatever GCC does with it.
Exactly, alien code appear when in binary...
Regards,
Michael Wang
>
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prev parent reply other threads:[~2014-02-18 2:43 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-14 4:54 [RFC PATCH] sched: make sure sched-priority after invoke idle_balance() Michael wang
2014-02-14 12:38 ` Peter Zijlstra
2014-02-17 3:31 ` Michael wang
2014-02-17 11:24 ` Peter Zijlstra
2014-02-18 2:42 ` Michael wang [this message]
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