Re: [PATCH 1/4] mm: cma: add currently allocated CMA buffers list to debugfs

From: Stefan Strogin
Date: Mon Feb 16 2015 - 14:15:15 EST


On 13/02/15 06:10, Joonsoo Kim wrote:
> On Fri, Feb 13, 2015 at 01:15:41AM +0300, Stefan Strogin wrote:
> This linear searching make cma_release() slow if we have many allocated
> cma buffers. It wouldn't cause any problem?
> Thanks.

On my board the usual number of CMA buffers is about 20, and releasing a
buffer isn't a very frequent operation.
But if there could be systems with much more CMA buffers and/or frequent
allocating/releasing them, maybe it would be useful to convert buffers
list to rb_trees?
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