Comment # 11 on bug 998850 from Vlastimil Babka

(In reply to Michal Hocko from comment #9)
> (In reply to Peter S�tterlin from comment #8)
> > Indeed grep for the exact call_site fails.  Here's the cutout of the
> > interesting region:
> > 
> > ffffffff811901c0 T mempool_resize
> > ffffffff81190360 T mempool_alloc
> > ffffffff811904b0 T mempool_destroy
> > 
> > (but that seems quite generic?)
> 
> Yes it seems to be mempool_alloc. I was hoping for something more specific.
> It would be definitely better to know which mempool is that. Anyway, mempool
> users tend to be well behaved.

We can get stacktraces for the tracepoint:

/sys/kernel/debug/tracing # echo 1 > options/stacktrace