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Date:   Tue, 29 Mar 2022 17:21:42 +0200
From:   Michal =?iso-8859-1?Q?Koutn=FD?= <mkoutny@suse.com>
To:     "T.J. Mercier" <tjmercier@google.com>
Cc:     David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
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Subject: Re: [RFC v4 5/8] dmabuf: Add gpu cgroup charge transfer function
Message-ID: <20220329152142.GA15794@blackbody.suse.cz>
References: <20220328035951.1817417-1-tjmercier@google.com>
 <20220328035951.1817417-6-tjmercier@google.com>
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Hi.

On Mon, Mar 28, 2022 at 03:59:44AM +0000, "T.J. Mercier" <tjmercier@google.com> wrote:
> From: Hridya Valsaraju <hridya@google.com>
> 
> The dma_buf_charge_transfer function provides a way for processes to

(s/dma_bug_charge_transfer/dma_bug_transfer_charge/)

> transfer charge of a buffer to a different process. This is essential
> for the cases where a central allocator process does allocations for
> various subsystems, hands over the fd to the client who requested the
> memory and drops all references to the allocated memory.

I understood from [1] some buffers are backed by regular RAM. How are
these charges going to be transferred (if so)?


Thanks,
Michal

[1]
https://lore.kernel.org/r/CABdmKX2NSAKMC6rReMYfo2SSVNxEXcS466hk3qF6YFt-j-+_NQ@mail.gmail.com