linux-kernel - Re: commit e9e9250b: sync wakeup bustage when waker is an RT task

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Message-Id: <1273944732.7807.6.camel@marge.simson.net>
Date:	Sat, 15 May 2010 19:32:12 +0200
From:	Mike Galbraith <mgalbraith@...e.de>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: commit e9e9250b: sync wakeup bustage when waker is an RT task

On Sat, 2010-05-15 at 19:07 +0200, Mike Galbraith wrote:
> On Sat, 2010-05-15 at 14:04 +0200, Peter Zijlstra wrote:

> > So basically make all RT wakeups sync?
> 
> I was going to just skip subtracting waker's weight ala
> 
>         /*
>          * If sync wakeup then subtract the (maximum possible)
>          * effect of the currently running task from the load
>          * of the current CPU:
>          */
> 	if (sync && !task_has_rt_policy(curr))
> 		...

(not.  hohum, something to piddle with over java manana)

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