From: Shai Fultheim <shai@scalemp.com>
Date: Thu, 19 Apr 2012 22:12:32 +0000 (+0300)
Subject: x86: Conditionally update time when ack-ing pending irqs
X-Git-Tag: v3.2.65~93
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c9f1417be9acae3a9867f8bdab2b7924d76cf6ac;p=pandora-kernel.git

x86: Conditionally update time when ack-ing pending irqs

commit 42fa4250436304d4650fa271f37671f6cee24e08 upstream.

On virtual environments, apic_read could take a long time. As a
result, under certain conditions the ack pending loop may exit
without any queued irqs left, but after more than one second. A
warning will be printed needlessly in this case.

If the loop is about to exit regardless of max_loops, don't
update it.

Signed-off-by: Shai Fultheim <shai@scalemp.com>
[ rebased and reworded the commit message]
Signed-off-by: Ido Yariv <ido@wizery.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1334873552-31346-1-git-send-email-ido@wizery.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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