lkml.org 
[lkml]   [2017]   [Jan]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 05/12] x86/cqm,perf/core: Cgroup support prepare
On Fri, 6 Jan 2017, Vikas Shivappa wrote:
> @@ -741,7 +741,13 @@ static int intel_cqm_event_init(struct perf_event *event)
> INIT_LIST_HEAD(&event->hw.cqm_group_entry);
> INIT_LIST_HEAD(&event->hw.cqm_groups_entry);
>
> - event->destroy = intel_cqm_event_destroy;

I missed this in the first round, but tripped over it when looking at one
of the follow up patches.

How is that supposed to work?

1) intel_cqm_event_destroy() is still in the code and unused which emits a
compiler warning, but that can obviously be ignored for a good measure.

2) How would any testing of this mess actually work?

Not all all. Nothing ever tears down an event. So you just leave
everything hanging around probably with dangling pointers left and
right.

So now the 'Tests: Same as before.' in the so called changelog makes sense:

'Same as before' means: Completely untested and broken.

Thanks,

tglx

\
 
 \ /
  Last update: 2017-01-17 14:48    [W:0.225 / U:0.592 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site