Re: [RFC] [PATCH] perf: Attaching an event to a specific PMU

[Ingo Molnar]

* Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> 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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/