diff options
| author | Stephane Eranian <eranian@google.com> | 2012-02-09 17:20:56 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2012-03-05 08:55:41 -0500 |
| commit | 88c9a65e13f393fd60d8b9e9c659a34f9e39967d (patch) | |
| tree | a609acb6ae06c162015d6d32b9c8a1d5313ec3e2 /arch/x86/kernel/cpu/rdrand.c | |
| parent | c5cc2cd906ea9fe73e3c93f9ad824996faa278cc (diff) | |
perf/x86: Disable LBR support for older Intel Atom processors
The patch adds a restriction for Intel Atom LBR support. Only
steppings 10 (PineView) and more recent are supported. Older models
do not have a functional LBR. Their LBR does not freeze on PMU
interrupt which makes LBR unusable in the context of perf_events.
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1328826068-11713-7-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/rdrand.c')
0 files changed, 0 insertions, 0 deletions