On Wed, Jan 13, 2010 at 06:22:54PM +0100, Stephane Eranian wrote:
> Ok,
>
> Something like that should problably do it:
>
> static void event_sched_out(struct perf_event *event, int cpu)
> {
> event->state = PERF_EVENT_STATE_INACTIVE;
> event->oncpu = -1;
> }
You need to also call pmu->disable() if it is a software event,
because a breakpoint needs to be unregistered in hardware level
too.
And disable it in x86 level if it is an x86 event?
> hw_perf_group_sched_in()
> {
> ....
> n = 1;
> list_for_each_entry(sub, &leader->sibling_list, group_entry) {
> if (sub->state > PERF_EVENT_STATE_OFF) {
> ret = event_sched_in(sub, cpu);
> if (ret)
> goto undo;
Yeah we indeed really need to check that.
Thanks.
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