From: Peter Zijlstra <peterz@infradead.org>
Date: Wed, 5 Feb 2014 10:19:56 +0000 (+0100)
Subject: perf/x86: Fix Userspace RDPMC switch
X-Git-Tag: v3.14-rc4~11^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0e9f2204cfa6d79abe3e525ddf7c4ab5792cc751;p=pandora-kernel.git

perf/x86: Fix Userspace RDPMC switch

The current code forgets to change the CR4 state on the current CPU.
Use on_each_cpu() instead of smp_call_function().

Reported-by: Mark Davies <junk@eslaf.co.uk>
Suggested-by: Mark Davies <junk@eslaf.co.uk>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: fweisbec@gmail.com
Link: http://lkml.kernel.org/n/tip-69efsat90ibhnd577zy3z9gh@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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