[PATCH 3/3] drm/amdgpu: add FENCE_TO_HANDLE ioctl that returns syncobj or sync_file

[Zhou, David(ChunMing)]

Could you describe how difficult to directly use CS syncfile fd in Mesa compared with concerting CS seq to syncfile fd via several syncobj ioctls?

Regards,
David Zhou


发自坚果 Pro

Marek Ol?醟 <maraeo at gmail.com> 于 2017年9月13日 下午6:11写道：

On Wed, Sep 13, 2017 at 5:03 AM, zhoucm1 <david1.zhou at amd.com> wrote:
> Hi Marek,
>
> You're doing same things with me, see my "introduce syncfile as fence
> reuturn" patch set, which makes things more simple, we just need to directly
> return syncfile fd to UMD when CS, then the fence UMD get will be always
> syncfile fd, UMD don't need to construct ip_type/ip_instance/ctx_id/ring any
> more, which also can pass to dependency and syncobj as well.

For simpler Mesa code, Mesa won't get a sync file from the CS ioctl.

Marek
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