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| author | Markus Metzger | 2009-07-21 15:56:48 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2009-08-09 13:04:14 +0200 |
| commit | 30dd568c912602b7dbd609a45d053e01b13422bb (patch) | |
| tree | 96e970d91b3ef06301ca0f03bc4b1a0068b06122 /tools/perf/Makefile | |
| parent | perf_counter tools: Fix libbfd detection for systems with libz dependency (diff) | |
| download | kernel-qcow2-linux-30dd568c912602b7dbd609a45d053e01b13422bb.tar.gz kernel-qcow2-linux-30dd568c912602b7dbd609a45d053e01b13422bb.tar.xz kernel-qcow2-linux-30dd568c912602b7dbd609a45d053e01b13422bb.zip | |
x86, perf_counter, bts: Add BTS support to perfcounters
Implement a performance counter with:
attr.type = PERF_TYPE_HARDWARE
attr.config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS
attr.sample_period = 1
Using branch trace store (BTS) on x86 hardware, if available.
The from and to address for each branch can be sampled using:
PERF_SAMPLE_IP for the from address
PERF_SAMPLE_ADDR for the to address
[ v2: address review feedback, fix bugs ]
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/Makefile')
0 files changed, 0 insertions, 0 deletions