From: Dave Hansen <dave.hansen@linux.intel.com>
Date: Mon, 8 Jul 2013 21:44:04 +0000 (-0700)
Subject: perf/x86: Fix incorrect use of do_div() in NMI warning
X-Git-Tag: v3.11-rc1~10^2
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=baf64b85445546a38b44052d71782dfe7531e350;p=pandora-kernel.git

perf/x86: Fix incorrect use of do_div() in NMI warning

I completely botched understanding the calling conventions of
do_div().  I assumed that do_div() returned the result instead
of realizing that it modifies its argument and returns a
remainder.  The side-effect from this would be bogus numbers
for the "msecs" value in the warning messages:

	INFO: NMI handler (perf_event_nmi_handler) took too long to run: 0.114 msecs

Note, there was a second fix posted by Stephane Eranian for
a separate patch which I also botched:

	http://lkml.kernel.org/r/20130704223010.GA30625@quad

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dave Hansen <dave@sr71.net>
Link: http://lkml.kernel.org/r/20130708214404.B0B6EA66@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

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