From: Kevin Hilman <khilman@mvista.com>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH -rt] use SA_NODELAY for XScale PMU interrupts
Date: Fri, 08 Sep 2006 15:48:40 -0700 [thread overview]
Message-ID: <4501F348.7000208@mvista.com> (raw)
In-Reply-To: <1157750869.30730.137.camel@laptopd505.fenrus.org>
Arjan van de Ven wrote:
> 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 ???
>
Sorry, although I said 2.6.18-rt8, the patch is against 2.6.17-rt8,
where the SA_ flags are still used.
Kevin
prev parent reply other threads:[~2006-09-08 22:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-08 19:22 [PATCH -rt] use SA_NODELAY for XScale PMU interrupts Kevin Hilman
2006-09-08 19:46 ` Kevin Hilman
2006-09-08 21:27 ` Arjan van de Ven
2006-09-08 22:48 ` Kevin Hilman [this message]
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