diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2008-12-09 15:43:39 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-11 09:45:45 -0500 |
| commit | 4ac13294e44664bb7edf4daf52edb71e7c6bbe84 (patch) | |
| tree | accb533350a655e39a8ab846abc37018b2f87ccf /crypto/krng.c | |
| parent | 43874d238d5f208854a73c3225ca2a22833eec8b (diff) | |
perf counters: protect them against CSTATE transitions
Impact: fix rare lost events problem
There are CPUs whose performance counters misbehave on CSTATE transitions,
so provide a way to just disable/enable them around deep idle methods.
(hw_perf_enable_all() is cheap on x86.)
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'crypto/krng.c')
0 files changed, 0 insertions, 0 deletions