linux-kernel - Re: [PATCH v2 2/3] sched/fair: Move hot load

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Message-ID: <20151203200325.GU17308@twins.programming.kicks-ass.net>
Date:	Thu, 3 Dec 2015 21:03:25 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Waiman Long <waiman.long@....com>
Cc:	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	Yuyang Du <yuyang.du@...el.com>, Paul Turner <pjt@...gle.com>,
	Ben Segall <bsegall@...gle.com>,
	Morten Rasmussen <morten.rasmussen@....com>,
	Scott J Norton <scott.norton@....com>,
	Douglas Hatch <doug.hatch@....com>
Subject: Re: [PATCH v2 2/3] sched/fair: Move hot load_avg into its own
 cacheline

On Thu, Dec 03, 2015 at 02:56:37PM -0500, Waiman Long wrote:
> >  #ifdef CONFIG_CGROUP_SCHED
> >+	task_group_cache = KMEM_CACHE(task_group, 0);
> >+
> Thanks for making that change.
> 
> Do we need to add the flag SLAB_HWCACHE_ALIGN? Or we could make a helper
> flag that define SLAB_HWCACHE_ALIGN if CONFIG_FAIR_GROUP_SCHED is defined.
> Other than that, I am fine with the change.

I don't think we need that, see my reply earlier to Ben.
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