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perf/x86: Fix Userspace RDPMC switch
authorPeter Zijlstra <peterz@infradead.org>
Wed, 5 Feb 2014 10:19:56 +0000 (11:19 +0100)
committerIngo Molnar <mingo@kernel.org>
Sun, 9 Feb 2014 12:08:25 +0000 (13:08 +0100)
commit86b25b66ae1f174e7f3c7a3582ec4ce281b0a1a8
tree5024f0c05df026a22ad5f4dbd98402bc4d7e995etree | snapshot
parenta19abb7b2d19d906494518e11a6fd64834f53397commit | diff
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>
arch/x86/kernel/cpu/perf_event.c diff | blob | history
Linux Kernel Source Tree.