Re: [PATCHv4 6/8] videobuf2: add queue memory coherency parameter
From: Sergey Senozhatsky <senozhatsky@chromium.org>
Date: 2021-08-17 10:43:36
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From: Sergey Senozhatsky <senozhatsky@chromium.org>
Date: 2021-08-17 10:43:36
Also in:
lkml
On (21/08/03 10:29), Hans Verkuil wrote:
quoted
+static void set_queue_coherency(struct vb2_queue *q, bool coherent_mem) +{ + q->coherent_mem = 1;This I do not like: coherent memory is the default, and so I think it will be more robust if this field is renamed to non_coherent_mem and so coherent memory will be the default since this field will be cleared initially with kzalloc. Basically a similar argument that you used in patch 2/8. I also think that it improves readability, since non-coherent is the exceptional case, not the rule, and the field name corresponds with the V4L2 memory flag name. I noticed that in v1 of this series it was actually called non_coherent_mem, and it was changed in v2, actually after some comments from me. But I changed my mind on that, and I think it makes more sense to go back to calling this non_coherent_mem.
Ok, done. Hans, is this your final decision? :)