linux-kernel - Re: [PATCH 2/5] sched: Fix cfs_bandwidth misuse of hrtimer_expires

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Date:	Wed, 16 Oct 2013 20:41:44 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Ben Segall <bsegall@...gle.com>
Cc:	mingo@...hat.com, pjt@...gle.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] sched: Fix cfs_bandwidth misuse of
 hrtimer_expires_remaining

On Wed, Oct 16, 2013 at 11:16:17AM -0700, Ben Segall wrote:
> + * Requires cfs_b->lock for hrtimer_expires_remaining to be safe against the
> + * hrtimer base being cleared by __hrtimer_start_range_ns. This is possibly
> + * incorrect if we ever built with CPU_HOTPLUG.

Do clarify; most people build with hotplug enabled; due to wanting
suspend/resume stuff etc..
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