linux-kernel - Re: [patch 0/2] Run interrupt handlers always with interrupts disabled

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Date:	Thu, 25 Mar 2010 20:34:14 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	tglx@...utronix.de
Cc:	torvalds@...l.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org, akpm@...ux-foundation.org,
	mingo@...e.hu, peterz@...radead.org, alan@...rguk.ukuu.org.uk,
	andi@...stfloor.org, gregkh@...e.de, acme@...hat.com
Subject: Re: [patch 0/2] Run interrupt handlers always with interrupts
 disabled

From: Thomas Gleixner <tglx@...utronix.de>
Date: Fri, 26 Mar 2010 00:06:44 -0000

> The following patch series removes the IRQF_DISABLED functionality
> from the core interrupt code and runs all interrupt handlers with
> interrupts disabled.
> 
> IRQF_DISABLED is kept as a define and scheduled for feature removal.
> 
> I booted and stressed that patches w/o any obvious fallout on more
> than 20 different systems in my arsenal of test machines which
> includes various embedded non x86 systems.
> 
> To debug eventual latency issues we (admittedly I talked acme into
> looking at that) want to extend perf with a top like tool to monitor
> the maximum runtime of interrupt handlers with the already existing
> tracepoints.

Acked-by: David S. Miller <davem@...emloft.net>
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