From mboxrd@z Thu Jan  1 00:00:00 1970
From: "John Hawkes" <hawkes@sgi.com>
Date: Fri, 16 Dec 2005 02:12:39 +0000
Subject: Re: [PATCH] ia64: disable preemption in udelay()
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References: <20051214232526.9039.15753.sendpatchset@tomahawk.engr.sgi.com> <20051215225040.GA9086@agluck-lia64.sc.intel.com> <Pine.LNX.4.64.0512151750500.1678@montezuma.fsmlabs.com> <1134698636.12086.222.camel@mindpipe>
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To: Lee Revell <rlrevell@joe-job.com>, Zwane Mwaikambo <zwane@arm.linux.org.uk>
Cc: "Luck, Tony" <tony.luck@intel.com>, Tony Luck <tony.luck@gmail.com>, Andrew Morton <akpm@osdl.org>, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, Jack Steiner <steiner@sgi.com>, Keith Owens <kaos@sgi.com>, Dimitri Sivanich <sivanich@sgi.com>

From: "Lee Revell" <rlrevell@joe-job.com>
> There are 10 drivers that udelay(10000) or more and a TON that
> udelay(1000).  Turning those all into 1ms+ non preemptible sections will
> be very bad.

What about 100usec non-preemptible sections?
John Hawkes