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| author |   Mike Galbraith <efault@gmx.de> | 2009-01-23 10:13:01 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-01-23 11:33:18 +0100 |
| commit | 1b023a96d9b44f50f4d8ff28c15f5b80e354760f (patch) | |
| tree | 8b6a5956c4461c13c2e2b3769096afac5b767524 /include/linux/init_task.h | |
| parent | Merge branch 'core/percpu' into perfcounters/core (diff) | |
| download | linux-dev-1b023a96d9b44f50f4d8ff28c15f5b80e354760f.tar.xz linux-dev-1b023a96d9b44f50f4d8ff28c15f5b80e354760f.zip | |
perfcounters: throttle on too high IRQ rates
Starting kerneltop with only -c 100 seems to be a bad idea, it can
easily lock the system due to perfcounter IRQ overload.
So add throttling: if a new IRQ arrives in a shorter than
PERFMON_MIN_PERIOD_NS time, turn off perfcounters and untrottle them
from the next timer tick.
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/init_task.h')
0 files changed, 0 insertions, 0 deletions