diff options
| author | Nicholas Piggin <[email protected]> | 2017-07-10 16:19:38 +1000 |
|---|---|---|
| committer | Michael Ellerman <[email protected]> | 2017-07-18 11:45:47 +1000 |
| commit | 101dd590a7fa37954540cf3149a1c502c0acc524 (patch) | |
| tree | 0d25f21a5c4d5f3a3592de7e82249422065fed92 /tools/perf/util/trace-event-scripting.c | |
| parent | a70b487b07cf4201bc6702e7f646fa593b23009f (diff) | |
powerpc/perf: Avoid spurious PMU interrupts after idle
POWER9 DD2 can see spurious PMU interrupts after state-loss idle in
some conditions.
A solution is to save and reload MMCR0 over state-loss idle.
Signed-off-by: Nicholas Piggin <[email protected]>
Acked-by: Madhavan Srinivasan <[email protected]>
Tested-by: Anton Blanchard <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions