linux-kernel - Re: drm/radeon spamming alloc_contig

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Message-ID: <20161201072119.GD18272@dhcp22.suse.cz>
Date:   Thu, 1 Dec 2016 08:21:20 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     "Robin H. Johnson" <robbat2@...too.org>
Cc:     Michal Nazarewicz <mina86@...a86.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        dri-devel@...ts.freedesktop.org, Joonsoo Kim <js1304@...il.com>
Subject: Re: drm/radeon spamming alloc_contig_range: [xxx, yyy) PFNs busy busy

Forgot to CC Joonsoo. The email thread starts more or less here
http://lkml.kernel.org/r/20161130092239.GD18437@dhcp22.suse.cz

On Thu 01-12-16 08:15:07, Michal Hocko wrote:
> On Wed 30-11-16 20:19:03, Robin H. Johnson wrote:
> [...]
> > alloc_contig_range: [83f2a3, 83f2a4) PFNs busy
> 
> Huh, do I get it right that the request was for a _single_ page? Why do
> we need CMA for that?

-- 
Michal Hocko
SUSE Labs