linux-kernel - Re: [Cbe-oss-dev] [RFC, PATCH] CELL Oprofile SPU profiling updated patch

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Message-Id: <200702160133.14330.arnd@arndb.de>
Date:	Fri, 16 Feb 2007 01:33:13 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	paulmck@...ux.vnet.ibm.com
Cc:	Carl Love <cel@...ibm.com>, linuxppc-dev@...abs.org,
	cbe-oss-dev@...abs.org, oprofile-list@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [Cbe-oss-dev] [RFC, PATCH] CELL Oprofile SPU profiling	updated	patch

On Thursday 15 February 2007 22:50, Paul E. McKenney wrote:
> Is this 1.5ms with interrupts disabled?  This time period is problematic
> from a realtime perspective if so -- need to be able to preempt.

No, interrupts should be enabled here. Still, 1.5ms is probably a little
too long without a cond_resched() in case kernel preemption is disabled.

	Arnd <><
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