diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-12-08 08:20:16 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-08 09:56:42 -0500 |
| commit | 87b9cf4623ad4e5fc009e48c020593dffd5d3793 (patch) | |
| tree | bd49f47b3fee4f4dc956e7db303fb1c20d53eee3 /init/Kconfig | |
| parent | 241771ef016b5c0c83cd7a4372a74321c973c1e6 (diff) | |
x86, perfcounters: read out MSR_CORE_PERF_GLOBAL_STATUS with counters disabled
Impact: make perfcounter NMI and IRQ sequence more robust
Make __smp_perf_counter_interrupt() a bit more conservative: first disable
all counters, then read out the status. Most invocations are because there
are real events, so there's no performance impact.
Code flow gets a bit simpler as well this way.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'init/Kconfig')
0 files changed, 0 insertions, 0 deletions