tree dd1b75f7d14b8bf7dff2519058516be69e70c356
parent dc86cabe4b242446ea9aa8492c727e1220817898
author markus.t.metzger@intel.com <markus.t.metzger@intel.com> 1251900286 +0200
committer Ingo Molnar <mingo@elte.hu> 1252049199 +0200

x86, perf_counter, bts: Fail if BTS is not available

Reserve PERF_COUNT_HW_BRANCH_INSTRUCTIONS with sample_period ==
1 for BTS tracing and fail, if BTS is not available.

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090902140612.943801000@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>