linux-kernel - Re: [PATCH 1/4] tile: Add support for handling PMC hardware

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Date:	Thu, 6 Mar 2014 10:11:02 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Tony Lu <zlu@...era.com>
Cc:	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Chris Metcalf <cmetcalf@...era.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/4] tile: Add support for handling PMC hardware

On Thu, Mar 06, 2014 at 06:13:48AM +0000, Tony Lu wrote:

The changelogs are all very sparse. But in general the stuff looks to
have the right shape.

It looks like you do software NMIs with interrupt priority levels; which
is a perfectly fine way, other archs do the same.

One thing I didn't spot is a tile irq_work implementation; perf likes to
have one.

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