diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-05-13 12:54:01 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-15 09:46:56 +0200 |
| commit | f5a5a2f6e69e88647ae12da39f0ff3a510bcf0a6 (patch) | |
| tree | 85f7777f0b306fb553a3efc825b5337d301a8e34 /include/linux/debug_locks.h | |
| parent | ec3232bdf8518bea8410f0027f870b24d3aa8753 (diff) | |
perf_counter: x86: Fix throttling
If counters are disabled globally when a perfcounter IRQ/NMI hits,
and if we throttle in that case, we'll promote the '0' value to
the next lapic IRQ and disable all perfcounters at that point,
permanently ...
Fix it.
[ Impact: fix hung perfcounters under load ]
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/debug_locks.h')
0 files changed, 0 insertions, 0 deletions