[PATCH v2] perf: Rewrite core context handling

[Peter Zijlstra]

On Fri, Oct 14, 2022 at 03:26:07PM +0530, Ravi Bangoria wrote:
> On 13-Oct-22 4:29 PM, Peter Zijlstra wrote:
> > On Thu, Oct 13, 2022 at 03:37:23PM +0530, Ravi Bangoria wrote:
> > 
> >>> -	refcount_t			refcount;
> >>> +	refcount_t			refcount; /* event <-> ctx */
> >>
> >> Ok. We need to remove all those // XXX get/put_ctx() from code
> >> which we added to make refcount a pmu_ctx <-> ctx.
> > 
> > Them already gone :-) I've not yet fixed up the typoes, but current
> > version should be here:
> > 
> >   https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/log/?h=perf/core
> > 
> > Thanks!
> 
> I've been running perf-fuzzer on Xeon machine since yesterday and I don't see any
> issue. Will do the same on my AMD machine as well over the weekend.

Awesome -- I've started fuzzing on the ADL (with the big.LITTLE PMU
setup) and I've had it run on my very aged IVB-EP machine. Both so far
(knock on wood) with no issues.

The most modern AMD machine I have at hand is a 2 socket Interlagos, and
I doubt anybody really much cares about that these days -- but I can run
it for giggles.