From: Yuyang Du <yuyang.du@intel.com>
Date: Fri, 19 Dec 2014 00:29:56 +0000 (+0800)
Subject: sched: Fix odd values in effective_load() calculations
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~297^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=32a8df4e0b33fccc9715213b382160415b5c4008;p=pandora-kernel.git

sched: Fix odd values in effective_load() calculations

In effective_load, we have (long w * unsigned long tg->shares) / long W,
when w is negative, it is cast to unsigned long and hence the product is
insanely large. Fix this by casting tg->shares to long.

Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Yuyang Du <yuyang.du@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Dave Jones <davej@redhat.com>
Cc: Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20141219002956.GA25405@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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