Re: perf_counters issue with self-sampling threads

[Peter Zijlstra]

On Wed, 2009-07-29 at 14:37 +0200, stephane eranian wrote:
> 
> >
> > Now I was considering teaching send_sigio_to_task() to use
> > specific_send_sig_info() when fown->pid != fown->group_leader->pid or
> > something, but I'm not sure that won't break anything.
> >
> Yes, that's the problem with touching this. I don't know if this will break
> things. That's why I was suggested creating a parallel code path which
> does what we want without modifying the existing path. Unless you know
> some signal expert at redhat or elsewhere.

His name is Oleg, and he's on CC ;-)

> > Alternatively, I've missed a detail and I either read the manpage wrong,
> > or the code, or both of them.
> >
> The code does not correspond to the manpage. Not clear which one
> is correct though. This F_SETOWN trick looks very Linux specific.

Linus specific sounds good enough to me. Michael might have something so
say on this though...

--
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/