Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth via sysctl

[David Ahern]

On 4/27/16 10:09 AM, Frederic Weisbecker wrote:
> > > I first thought that this should be a tunable per event instead of a global sysctl
> >
> > Yeah, I'll work on that too.
>
> There is no rush though. The sysfs limit will probably be enough for most users. Unless
> someone requested it?

I have. I spent time last winter (2015) looking into how to do it. The 
userspace syntax was more of a pain than passing the parameters to the 
kernel side as the intent is to specify N kernel frames and M user frames.