From: Dmitry Osipenko <digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Mikko Perttunen <cyndis-/1wQRMveznE@public.gmane.org>,
Thierry Reding
<thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Jon Hunter <jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
David Airlie <airlied-cv59FeDIM0c@public.gmane.org>,
Daniel Vetter <daniel-/w4YWyX8dFk@public.gmane.org>,
sumit.semwal-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
gustavo-THi1TnShQwVAfugRpC6u6w@public.gmane.org
Cc: "linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
dri-devel
<dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>,
talho-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org,
bhuntsman-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org,
Erik Faye-Lund
<kusmabite-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: [RFC] Host1x/TegraDRM UAPI (sync points)
Date: Mon, 29 Jun 2020 22:33:23 +0300 [thread overview]
Message-ID: <8e78c18a-59da-a72f-e04a-ef6c23a49830@gmail.com> (raw)
In-Reply-To: <827c92a6-7fed-a81c-ba8e-6c69416c4ab9-/1wQRMveznE@public.gmane.org>
29.06.2020 13:27, Mikko Perttunen пишет:
...
>>>> 3. Sync points should be properly refcounted. Job's sync points
>>>> shouldn't be re-used while job is alive.
>>>>
>>>> 4. The job's sync point can't be re-used after job's submission (UAPI
>>>> constraint!). Userspace must free sync point and allocate a new one for
>>>> the next job submission. And now we:
>>>>
>>>> - Know that job's sync point is always in a healthy state!
>>>>
>>>> - We're not limited by a number of physically available hardware
>>>> sync
>>>> points! Allocation should block until free sync point is available.
It also occurred to me that if allocation is blocking and if there is a
need to allocate multiple sync points for a job, then the IOCTL should
be able to allocate multiple sync points at once. This will prevent
interlock situation where two context could block on each other.
WARNING: multiple messages have this Message-ID (diff)
From: Dmitry Osipenko <digetx@gmail.com>
To: Mikko Perttunen <cyndis@kapsi.fi>,
Thierry Reding <thierry.reding@gmail.com>,
Jon Hunter <jonathanh@nvidia.com>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
sumit.semwal@linaro.org, gustavo@padovan.org
Cc: "linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
talho@nvidia.com, bhuntsman@nvidia.com,
dri-devel <dri-devel@lists.freedesktop.org>,
Erik Faye-Lund <kusmabite@gmail.com>
Subject: Re: [RFC] Host1x/TegraDRM UAPI (sync points)
Date: Mon, 29 Jun 2020 22:33:23 +0300 [thread overview]
Message-ID: <8e78c18a-59da-a72f-e04a-ef6c23a49830@gmail.com> (raw)
In-Reply-To: <827c92a6-7fed-a81c-ba8e-6c69416c4ab9@kapsi.fi>
29.06.2020 13:27, Mikko Perttunen пишет:
...
>>>> 3. Sync points should be properly refcounted. Job's sync points
>>>> shouldn't be re-used while job is alive.
>>>>
>>>> 4. The job's sync point can't be re-used after job's submission (UAPI
>>>> constraint!). Userspace must free sync point and allocate a new one for
>>>> the next job submission. And now we:
>>>>
>>>> - Know that job's sync point is always in a healthy state!
>>>>
>>>> - We're not limited by a number of physically available hardware
>>>> sync
>>>> points! Allocation should block until free sync point is available.
It also occurred to me that if allocation is blocking and if there is a
need to allocate multiple sync points for a job, then the IOCTL should
be able to allocate multiple sync points at once. This will prevent
interlock situation where two context could block on each other.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2020-06-29 19:33 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-23 12:09 [RFC] Host1x/TegraDRM UAPI Mikko Perttunen
2020-06-23 12:09 ` Mikko Perttunen
[not found] ` <9b06b7ec-f952-2561-7afb-5653514cd5d3-/1wQRMveznE@public.gmane.org>
2020-06-24 20:55 ` Dmitry Osipenko
2020-06-24 20:55 ` Dmitry Osipenko
[not found] ` <867dea06-8741-82e8-3e26-9a017ad9057a-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-25 9:17 ` Mikko Perttunen
2020-06-25 9:17 ` Mikko Perttunen
2020-06-24 22:33 ` Dmitry Osipenko
2020-06-24 22:33 ` Dmitry Osipenko
[not found] ` <7cc0d47b-024a-263e-3b63-1d1184b462b3-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-25 9:27 ` Mikko Perttunen
2020-06-25 9:27 ` Mikko Perttunen
[not found] ` <8d60baf4-45e8-296a-279e-dc105966361c-/1wQRMveznE@public.gmane.org>
2020-06-25 22:50 ` [RFC] Host1x/TegraDRM UAPI (drm_tegra_submit_relocation) Dmitry Osipenko
2020-06-25 22:50 ` Dmitry Osipenko
[not found] ` <eb3cac23-cd8c-732b-684c-c2d531de00a2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-26 9:01 ` Mikko Perttunen
2020-06-26 9:01 ` Mikko Perttunen
2020-06-24 23:11 ` [RFC] Host1x/TegraDRM UAPI Dmitry Osipenko
2020-06-24 23:11 ` Dmitry Osipenko
[not found] ` <c6642ebd-c9f1-eab0-ff6d-109698af73e0-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-25 9:16 ` Mikko Perttunen
2020-06-25 9:16 ` Mikko Perttunen
[not found] ` <5c0aa939-d722-5034-6328-4df5be8ee3c6-/1wQRMveznE@public.gmane.org>
2020-06-25 23:24 ` Dmitry Osipenko
2020-06-25 23:24 ` Dmitry Osipenko
[not found] ` <c96af3cb-a15c-dd3f-ac5b-b0a56d2ed6d9-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-26 9:05 ` Mikko Perttunen
2020-06-26 9:05 ` Mikko Perttunen
2020-06-24 23:18 ` Dmitry Osipenko
2020-06-24 23:18 ` Dmitry Osipenko
[not found] ` <f85f3fa0-ba18-ddd5-2bac-158dfed9b792-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-25 0:59 ` Dmitry Osipenko
2020-06-25 0:59 ` Dmitry Osipenko
2020-06-24 23:23 ` Dmitry Osipenko
2020-06-24 23:23 ` Dmitry Osipenko
[not found] ` <3703cf87-457a-0e71-7693-5644735e438a-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-25 9:19 ` Mikko Perttunen
2020-06-25 9:19 ` Mikko Perttunen
2020-06-25 0:47 ` Dmitry Osipenko
2020-06-25 0:47 ` Dmitry Osipenko
[not found] ` <10f9a8e5-9972-76bc-f60a-1bf1211e55e1-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-25 9:23 ` Mikko Perttunen
2020-06-25 9:23 ` Mikko Perttunen
2020-06-25 22:47 ` [RFC] Host1x/TegraDRM UAPI (drm_tegra_channel_map) Dmitry Osipenko
2020-06-25 22:47 ` Dmitry Osipenko
[not found] ` <4f9ddf30-ad8d-3750-20d7-867be17a1006-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-26 7:34 ` Thierry Reding
2020-06-26 7:34 ` Thierry Reding
2020-06-26 16:35 ` Dmitry Osipenko
2020-06-26 16:35 ` Dmitry Osipenko
[not found] ` <4c243f7a-4c53-d995-88a1-0fe03d41fc3a-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-28 11:16 ` Mikko Perttunen
2020-06-28 11:16 ` Mikko Perttunen
[not found] ` <f622c8ed-efe4-0889-bd26-dc22e96b8e4d-/1wQRMveznE@public.gmane.org>
2020-06-28 22:59 ` Dmitry Osipenko
2020-06-28 22:59 ` Dmitry Osipenko
[not found] ` <b8a8b05e-de1c-400f-3f35-bb1ea49789e9-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-30 10:55 ` Mikko Perttunen
2020-06-30 10:55 ` Mikko Perttunen
[not found] ` <76e46256-58d3-fdbe-41d6-8ac910fc7fd0-/1wQRMveznE@public.gmane.org>
2020-06-30 19:48 ` Dmitry Osipenko
2020-06-30 19:48 ` Dmitry Osipenko
2020-06-26 11:06 ` [RFC] Host1x/TegraDRM UAPI Karol Herbst
2020-06-26 11:06 ` Karol Herbst
[not found] ` <CACO55ttfwQDwnO8ep=YKBgo+HYBg=zLDLfBKtH67MrqKzMWw_w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2020-06-26 11:13 ` Mikko Perttunen
2020-06-26 11:13 ` Mikko Perttunen
[not found] ` <cb935527-2eb9-23f3-a823-d6b849fc3c94-/1wQRMveznE@public.gmane.org>
2020-06-26 11:16 ` Karol Herbst
2020-06-26 11:16 ` Karol Herbst
2020-06-26 11:40 ` Thierry Reding
2020-06-26 11:40 ` Thierry Reding
2020-06-26 13:38 ` Daniel Vetter
2020-06-26 13:38 ` Daniel Vetter
[not found] ` <20200626133837.GE3278063-dv86pmgwkMBes7Z6vYuT8azUEOm+Xw19@public.gmane.org>
2020-06-26 13:59 ` Dmitry Osipenko
2020-06-26 13:59 ` Dmitry Osipenko
[not found] ` <b46516eb-4077-c3ac-83d0-d8c57660dc3e-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-30 9:09 ` Daniel Vetter
2020-06-30 9:09 ` Daniel Vetter
2020-06-27 21:47 ` [RFC] Host1x/TegraDRM UAPI (drm_tegra_submit_syncpt_incr) Dmitry Osipenko
2020-06-27 21:47 ` Dmitry Osipenko
[not found] ` <9ddfedff-f465-b22d-5d6f-c7ba01731455-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-28 11:10 ` Mikko Perttunen
2020-06-28 11:10 ` Mikko Perttunen
2020-06-27 22:32 ` [RFC] Host1x/TegraDRM UAPI (drm_tegra_submit_command) Dmitry Osipenko
2020-06-27 22:32 ` Dmitry Osipenko
[not found] ` <f31fbe3b-3fc5-2ece-4c2c-9ff4e99995d6-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-28 10:28 ` Mikko Perttunen
2020-06-28 10:28 ` Mikko Perttunen
[not found] ` <19b7b295-30fa-8897-02f3-3c3b8f2a0e53-/1wQRMveznE@public.gmane.org>
2020-06-29 0:00 ` Dmitry Osipenko
2020-06-29 0:00 ` Dmitry Osipenko
[not found] ` <3f0d2e08-aa0b-9048-c22d-8f3d3106cdff-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-30 10:40 ` Mikko Perttunen
2020-06-30 10:40 ` Mikko Perttunen
2020-06-27 23:27 ` [RFC] Host1x/TegraDRM UAPI (sync points) Dmitry Osipenko
2020-06-27 23:27 ` Dmitry Osipenko
[not found] ` <5b1edaad-ba36-7b0f-5b02-457ae5b6d91e-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-28 9:44 ` Mikko Perttunen
2020-06-28 9:44 ` Mikko Perttunen
[not found] ` <62859775-514c-2941-75ed-6905e9282a6f-/1wQRMveznE@public.gmane.org>
2020-06-29 2:36 ` Dmitry Osipenko
2020-06-29 2:36 ` Dmitry Osipenko
[not found] ` <623c1eaa-31fb-8dff-f6c0-d8cd0be60070-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-29 10:27 ` Mikko Perttunen
2020-06-29 10:27 ` Mikko Perttunen
[not found] ` <827c92a6-7fed-a81c-ba8e-6c69416c4ab9-/1wQRMveznE@public.gmane.org>
2020-06-29 19:28 ` Dmitry Osipenko
2020-06-29 19:28 ` Dmitry Osipenko
2020-06-29 19:33 ` Dmitry Osipenko [this message]
2020-06-29 19:33 ` Dmitry Osipenko
2020-06-29 19:42 ` Dmitry Osipenko
2020-06-29 19:42 ` Dmitry Osipenko
[not found] ` <f1a88006-ab3e-9068-e220-15eee17aeba0-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-30 10:26 ` Mikko Perttunen
2020-06-30 10:26 ` Mikko Perttunen
[not found] ` <3b058989-a93a-6796-8d94-f60ce39e3fba-/1wQRMveznE@public.gmane.org>
2020-07-01 0:22 ` Dmitry Osipenko
2020-07-01 0:22 ` Dmitry Osipenko
[not found] ` <2190fe9d-6381-0b5e-39d8-a04daca9a1bf-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-07-02 12:10 ` Mikko Perttunen
2020-07-02 12:10 ` Mikko Perttunen
[not found] ` <a1d6c789-4935-110f-f4fd-db86ae0e4fef-/1wQRMveznE@public.gmane.org>
2020-07-07 11:06 ` Dmitry Osipenko
2020-07-07 11:06 ` Dmitry Osipenko
[not found] ` <a2b1f9cf-cc0b-1a0f-d0ac-addcb1f28502-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-07-08 10:06 ` Mikko Perttunen
2020-07-08 10:06 ` Mikko Perttunen
[not found] ` <d3a6c005-0d85-e7b9-41a2-3d86595efbc1-/1wQRMveznE@public.gmane.org>
2020-07-09 9:28 ` Dmitry Osipenko
2020-07-09 9:28 ` Dmitry Osipenko
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