Messages in this thread | | | Date | Wed, 6 Jul 2011 19:15:59 +0200 | From | Ingo Molnar <> | Subject | Re: [RFC] [PATCH] perf: Attaching an event to a specific PMU |
| |
* Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
> On Wed, 2011-07-06 at 19:10 +0200, Ingo Molnar wrote: > > > > I think Peter suggested it that an open() done in /sys should > > give us a handle to a given event? > > No, more like the open of a sysfs file could also grab a refcount > on the module. All it would take is a custom open/close method for > sysfs files. Now I have no clue how to do that, but that's another > issue. > > Also, I really don't see the point. With modular PMUs there's > always races against unload, just don't do that or live with it.
I don't think it's a big issue either - module load/unloads are rare.
Thanks,
Ingo
| |