linux-kernel - Re: [PATCH -rt] use SA_NODELAY for XScale PMU interrupts

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Message-Id: <1157750869.30730.137.camel@laptopd505.fenrus.org>
Date:	Fri, 08 Sep 2006 23:27:49 +0200
From:	Arjan van de Ven <arjan@...radead.org>
To:	Kevin Hilman <khilman@...sta.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH -rt] use SA_NODELAY for XScale PMU interrupts

On Fri, 2006-09-08 at 12:22 -0700, Kevin Hilman wrote:
> In the XScale oprofile support, the performance monitoring unit (PMU)
> triggers interrupts and the ISR reads out the performance data.  These
> ISRs are currently set to SA_INTERRUPT.  In order to get accurate
> performance and profiling data under PREEMPT_RT, these should use
> SA_NODELAY.  The functions called by this ISR are limited to
> drivers/oprofile functions.
> 
> Patch against 2.6.18-rt8


hmm I thought the SA_ flags were deprecated ???


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