diff options
| author | Peter Zijlstra | 2009-04-06 11:45:09 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2009-04-07 10:48:59 +0200 |
| commit | 4c9e25428ff46b968a30f1dfafdba550cb6e4141 (patch) | |
| tree | 273e74f4f99dc626ddb960f0cbbe9b64d47bbfe9 /include/linux/perf_counter.h | |
| parent | perf_counter: comment the perf_event_type stuff (diff) | |
| download | kernel-qcow2-linux-4c9e25428ff46b968a30f1dfafdba550cb6e4141.tar.gz kernel-qcow2-linux-4c9e25428ff46b968a30f1dfafdba550cb6e4141.tar.xz kernel-qcow2-linux-4c9e25428ff46b968a30f1dfafdba550cb6e4141.zip | |
perf_counter: change event definition
Currently the definition of an event is slightly ambiguous. We have
wakeup events, for poll() and SIGIO, which are either generated
when a record crosses a page boundary (hw_events.wakeup_events == 0),
or every wakeup_events new records.
Now a record can be either a counter overflow record, or a number of
different things, like the mmap PROT_EXEC region notifications.
Then there is the PERF_COUNTER_IOC_REFRESH event limit, which only
considers counter overflows.
This patch changes then wakeup_events and SIGIO notification to only
consider overflow events. Furthermore it changes the SIGIO notification
to report SIGHUP when the event limit is reached and the counter will
be disabled.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <20090406094518.266679874@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/perf_counter.h')
| -rw-r--r-- | include/linux/perf_counter.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index 81220188d058..0f5a4005048f 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -439,6 +439,7 @@ struct perf_counter { /* delayed work for NMIs and such */ int pending_wakeup; + int pending_kill; int pending_disable; struct perf_pending_entry pending; |