________________________________________ 发件人: Gioh Kim <gioh.kim@xxxxxxx> 发送时间: 2014年11月26日 12:25 收件人: Mel Gorman; Laura Abbott 抄送: lsf-pc@xxxxxxxxxxxxxxxxxxxxxxxxxx; linux-mm@xxxxxxxxx; SeongJae Park; minchan@xxxxxxxxxx; 朱辉; iamjoonsoo.kim@xxxxxxx 主题: Re: [Lsf-pc] [LSF/MM TOPIC] Improving CMA 2014-11-25 오후 8:32에 Mel Gorman 이(가) 쓴 글: > On Mon, Nov 24, 2014 at 05:54:14PM -0800, Laura Abbott wrote: >> There have been a number of patch series posted designed to improve various >> aspects of CMA. A sampling: >> >> https://lkml.org/lkml/2014/10/15/623 >> http://marc.info/?l=linux-mm&m=141571797202006&w=2 >> https://lkml.org/lkml/2014/6/26/549 >> >> As far as I can tell, these are all trying to fix real problems with CMA but >> none of them have moved forward very much from what I can tell. The goal of >> this session would be to come out with an agreement on what are the biggest >> problems with CMA and the best ways to solve them. >> > > I think this is a good topic. Some of the issues have been brought up before > at LSF/MM but they never made that much traction so it's worth revisiting. I > haven't been paying close attention to the mailing list discussions but > I've been a little worried that the page allocator paths are turning into > a bigger and bigger mess. I'm also a bit worried that options such as > migrating pages out of CMA areas that are about to be pinned for having > callback options to forcibly free pages never went anywhere. > > I have two question. > > First, is GCMA able to replace CMA? It's news to me. > I need some time to check GCMA. > > Second, is CMA popular enough to change allocator path? > Yes, I need it. > But I don't know any company uses it, and nobody seems to have interest in > it. We (xiaomi) use it in our new mibox. Thanks, Hui��.n������g��� �a��� �&ޖ)���)��h���&������梷���� �Ǟ�m������)������^�����������v���O��zf������