diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2010-09-07 17:34:50 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-09-09 20:46:34 +0200 |
| commit | 89a1e18731959e9953fae15ddc1a983eb15a4f19 (patch) | |
| tree | 5a52e77acb23f47254c94e23eb6ed35a422fce1d /kernel/hw_breakpoint.c | |
| parent | 8dc85d547285668e509f86c177bcd4ea055bcaaf (diff) | |
| download | lwn-89a1e18731959e9953fae15ddc1a983eb15a4f19.tar.gz lwn-89a1e18731959e9953fae15ddc1a983eb15a4f19.zip | |
perf: Provide a separate task context for swevents
Since software events are always schedulable, mixing them up with
hardware events (who are not) can lead to funny scheduling oddities.
Giving them their own context solves this.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: paulus <paulus@samba.org>
Cc: stephane eranian <eranian@googlemail.com>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Lin Ming <ming.m.lin@intel.com>
Cc: Yanmin <yanmin_zhang@linux.intel.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/hw_breakpoint.c')
| -rw-r--r-- | kernel/hw_breakpoint.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/hw_breakpoint.c b/kernel/hw_breakpoint.c index 6f150095cafe..3b2aaffb65f0 100644 --- a/kernel/hw_breakpoint.c +++ b/kernel/hw_breakpoint.c @@ -610,6 +610,8 @@ static void hw_breakpoint_stop(struct perf_event *bp, int flags) } static struct pmu perf_breakpoint = { + .task_ctx_nr = perf_sw_context, /* could eventually get its own */ + .event_init = hw_breakpoint_event_init, .add = hw_breakpoint_add, .del = hw_breakpoint_del, |