Re: [PATCH v7 2/2] Refactor part of the oom report in dump_header

From: Michal Hocko
Date: Mon Jun 11 2018 - 03:07:28 EST


On Sun 10-06-18 08:12:16, Mike Rapoport wrote:
> On Fri, Jun 08, 2018 at 05:53:14PM +0800, çèé wrote:
> > Hi Mike
> > > My question was why do you call to alloc_constrained in the dump_header()
> > > function rather than pass the constraint that was detected a bit earlier to
> > > that function?
> >
> > dump_header will be called by three functions: oom_kill_process,
> > check_panic_on_oom, out_of_memory.
> > We can get the constraint from the last two
> > functions(check_panic_on_oom, out_of_memory), but I need to
> > pass a new parameter(constraint) for oom_kill_process.
>
> Another option is to add the constraint to the oom_control structure.

Which would make more sense because oom_control should contain the full
OOM context.
--
Michal Hocko
SUSE Labs