Messages in this thread | | | Date | Thu, 26 Nov 2009 19:44:22 +0900 | From | Tejun Heo <> | Subject | Re: [PATCH 1/4 tip/sched/core] sched: rename preempt_notifier to sched_notifier and always enable it |
| |
Hello, Ingo.
11/26/2009 07:29 PM, Ingo Molnar wrote: > That could be done with just two callbacks - one for sched-out, one for > sched-in. > > The best way to do that would be to use two TRACE_EVENT() callbacks, > make them unconditional and register to them. (with wrappers to make it > all convenient to use) > > This requires some work but needs to be done.
Thought about that but trace events and scheduler callbacks have very different trigger enable/disable conditions. I couldn't think of a way to do both in reasonably efficient manner. Although they both are notification mechanisms, they do have pretty different requirements and I'm not quite sure whether unifying them is a good idea. Of course if you have an idea to do both efficiently, no reason not to do it.
Thanks.
-- tejun
| |