linux-kernel - Re: [PATCH 0/4] munmap: Flexible mem unmap operation interface for scheduling latency

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Message-ID: <1303763393.18763.16.camel@gandalf.stny.rr.com>
Date:	Mon, 25 Apr 2011 16:29:53 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Geunsik Lim <leemgs1@...il.com>, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Hugh Dickins <hughd@...gle.com>,
	Darren Hart <dvhart@...ux.intel.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-rt-users <linux-rt-users@...r.kernel.org>
Subject: Re: [PATCH 0/4] munmap: Flexible mem unmap operation interface for
 scheduling latency

On Mon, 2011-04-25 at 21:47 +0200, Peter Zijlstra wrote:

> Also, -rt doesn't care since it already has preemptible mmu_gather.

To be fair, he did state:

>     In general, This is not a critical latency-path on preemption mode
>     (PREEMPT_VOLUNTARY / PREEMPT_DESKTOP / PREEMPT_RT)


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