tree ed4fe623afebdeb17e0a9ccc833f2154cd815991
parent a29aa8a7ff93e4196d558036928597e68337dd8d
author Robert Richter <robert.richter@amd.com> 1241002042 +0200
committer Ingo Molnar <mingo@elte.hu> 1241009473 +0200

perf_counter, x86: return raw count with x86_perf_counter_update()

To check on AMD cpus if a counter overflows, the upper bit of the raw
counter value must be checked. This value is already internally
available in x86_perf_counter_update(). Now, the value is returned so
that it can be used directly to check for overflows.

[ Impact: micro-optimization ]

Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: Paul Mackerras <paulus@samba.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1241002046-8832-26-git-send-email-robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>