From: "Michal Koutný" <mkoutny@suse.com>
To: "T.J. Mercier" <tjmercier@google.com>
Cc: "David Airlie" <airlied@linux.ie>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"Jonathan Corbet" <corbet@lwn.net>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Arve Hjønnevåg" <arve@android.com>,
"Todd Kjos" <tkjos@android.com>,
"Martijn Coenen" <maco@android.com>,
"Joel Fernandes" <joel@joelfernandes.org>,
"Christian Brauner" <brauner@kernel.org>,
"Hridya Valsaraju" <hridya@google.com>,
"Suren Baghdasaryan" <surenb@google.com>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Christian König" <christian.koenig@amd.com>,
"Benjamin Gaignard" <benjamin.gaignard@linaro.org>,
"Liam Mark" <lmark@codeaurora.org>,
"Laura Abbott" <labbott@redhat.com>,
"Brian Starkey" <Brian.Starkey@arm.com>,
"John Stultz" <john.stultz@linaro.org>,
"Tejun Heo" <tj@kernel.org>, "Zefan Li" <lizefan.x@bytedance.com>,
"Johannes Weiner" <hannes@cmpxchg.org>,
"Shuah Khan" <shuah@kernel.org>,
kaleshsingh@google.com, Kenny.Ho@amd.com,
skhan@linuxfoundation.org, dri-devel@lists.freedesktop.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org,
cgroups@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: Re: [RFC v4 5/8] dmabuf: Add gpu cgroup charge transfer function
Date: Tue, 29 Mar 2022 17:21:42 +0200 [thread overview]
Message-ID: <20220329152142.GA15794@blackbody.suse.cz> (raw)
In-Reply-To: <20220328035951.1817417-6-tjmercier@google.com>
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
next prev parent reply other threads:[~2022-03-29 15:21 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-28 3:59 [RFC v4 0/8] Proposal for a GPU cgroup controller T.J. Mercier
2022-03-28 3:59 ` [RFC v4 1/8] gpu: rfc: " T.J. Mercier
2022-03-28 3:59 ` [RFC v4 2/8] cgroup: gpu: Add a cgroup controller for allocator attribution of GPU memory T.J. Mercier
2022-03-29 16:59 ` Tejun Heo
2022-03-30 20:56 ` T.J. Mercier
2022-04-04 17:41 ` Tejun Heo
2022-04-04 17:49 ` T.J. Mercier
2022-03-28 3:59 ` [RFC v4 3/8] dmabuf: Use the GPU cgroup charge/uncharge APIs T.J. Mercier
2022-03-28 3:59 ` [RFC v4 4/8] dmabuf: heaps: export system_heap buffers with GPU cgroup charging T.J. Mercier
2022-03-28 14:36 ` Daniel Vetter
2022-03-28 18:28 ` T.J. Mercier
2022-03-29 8:42 ` Daniel Vetter
2022-03-29 16:50 ` Tejun Heo
2022-03-29 17:52 ` T.J. Mercier
2022-03-28 3:59 ` [RFC v4 5/8] dmabuf: Add gpu cgroup charge transfer function T.J. Mercier
2022-03-29 15:21 ` Michal Koutný [this message]
2022-04-01 18:41 ` T.J. Mercier
2022-04-05 12:12 ` Michal Koutný
2022-04-05 17:48 ` T.J. Mercier
2022-03-28 3:59 ` [RFC v4 6/8] binder: Add a buffer flag to relinquish ownership of fds T.J. Mercier
2022-03-28 3:59 ` [RFC v4 7/8] binder: use __kernel_pid_t and __kernel_uid_t for userspace T.J. Mercier
2022-03-28 3:59 ` [RFC v4 8/8] selftests: Add binder cgroup gpu memory transfer test T.J. Mercier
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