From: Dmitry Osipenko <digetx@gmail.com>
To: Mikko Perttunen <cyndis@kapsi.fi>,
Mikko Perttunen <mperttunen@nvidia.com>,
thierry.reding@gmail.com, jonathanh@nvidia.com, airlied@linux.ie,
daniel@ffwll.ch
Cc: linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org,
talho@nvidia.com, bhuntsman@nvidia.com
Subject: Re: [PATCH v5 00/21] sync_file API is not very suitable for DRM
Date: Thu, 28 Jan 2021 00:35:15 +0300 [thread overview]
Message-ID: <c690b17d-7278-5d25-8316-671afd111e01@gmail.com> (raw)
In-Reply-To: <2f999b6d-d781-503a-78f4-d444bce72c58@kapsi.fi>
26.01.2021 05:45, Mikko Perttunen пишет:
>> 4. Sync file shouldn't be needed for the part of DRM API which doesn't
>> interact with external non-DRM devices. We should use DRM syncobj for
>> everything related to DRM, it's a superior API over sync file, it's
>> suitable for DRM scheduler.
>
> Considering the issues with fileno limits, I suppose there is no other
> choice. Considering the recent NTSYNC proposal by Wine developers, maybe
> we should also have NTHANDLEs to get rid of restrictions of file
> descriptors.
It's odd to me that you trying to avoid the existing DRM API. This all
was solved in DRM long time ago and grate drivers have no problems with
using the DRM APIs. Even if something is really missing, then you should
add the missing features instead of re-inventing everything from scratch.
> DRM syncobjs may have some advantages over sync files, but
> also disadvantages. They cannot be poll()ed, so they cannot be combined
> with waits for other resources.
I'm not sure do you mean by "poll". Sync object supports polling very well.
WARNING: multiple messages have this Message-ID (diff)
From: Dmitry Osipenko <digetx@gmail.com>
To: Mikko Perttunen <cyndis@kapsi.fi>,
Mikko Perttunen <mperttunen@nvidia.com>,
thierry.reding@gmail.com, jonathanh@nvidia.com, airlied@linux.ie,
daniel@ffwll.ch
Cc: linux-tegra@vger.kernel.org, talho@nvidia.com,
bhuntsman@nvidia.com, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH v5 00/21] sync_file API is not very suitable for DRM
Date: Thu, 28 Jan 2021 00:35:15 +0300 [thread overview]
Message-ID: <c690b17d-7278-5d25-8316-671afd111e01@gmail.com> (raw)
In-Reply-To: <2f999b6d-d781-503a-78f4-d444bce72c58@kapsi.fi>
26.01.2021 05:45, Mikko Perttunen пишет:
>> 4. Sync file shouldn't be needed for the part of DRM API which doesn't
>> interact with external non-DRM devices. We should use DRM syncobj for
>> everything related to DRM, it's a superior API over sync file, it's
>> suitable for DRM scheduler.
>
> Considering the issues with fileno limits, I suppose there is no other
> choice. Considering the recent NTSYNC proposal by Wine developers, maybe
> we should also have NTHANDLEs to get rid of restrictions of file
> descriptors.
It's odd to me that you trying to avoid the existing DRM API. This all
was solved in DRM long time ago and grate drivers have no problems with
using the DRM APIs. Even if something is really missing, then you should
add the missing features instead of re-inventing everything from scratch.
> DRM syncobjs may have some advantages over sync files, but
> also disadvantages. They cannot be poll()ed, so they cannot be combined
> with waits for other resources.
I'm not sure do you mean by "poll". Sync object supports polling very well.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2021-01-27 21:39 UTC|newest]
Thread overview: 195+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-11 12:59 [PATCH v5 00/21] Host1x/TegraDRM UAPI Mikko Perttunen
2021-01-11 12:59 ` Mikko Perttunen
2021-01-11 12:59 ` [PATCH v5 01/21] gpu: host1x: Use different lock classes for each client Mikko Perttunen
2021-01-11 12:59 ` Mikko Perttunen
2021-03-22 14:46 ` Thierry Reding
2021-03-22 14:46 ` Thierry Reding
2021-03-22 14:48 ` Dmitry Osipenko
2021-03-22 14:48 ` Dmitry Osipenko
2021-03-22 15:19 ` Mikko Perttunen
2021-03-22 15:19 ` Mikko Perttunen
2021-03-22 16:01 ` Dmitry Osipenko
2021-03-22 16:01 ` Dmitry Osipenko
2021-03-23 10:20 ` Thierry Reding
2021-03-23 10:20 ` Thierry Reding
2021-03-23 13:25 ` Dmitry Osipenko
2021-03-23 13:25 ` Dmitry Osipenko
2021-03-26 14:54 ` Mikko Perttunen
2021-03-26 14:54 ` Mikko Perttunen
2021-03-26 18:31 ` Dmitry Osipenko
2021-03-26 18:31 ` Dmitry Osipenko
2021-03-26 19:10 ` Mikko Perttunen
2021-03-26 19:10 ` Mikko Perttunen
2021-03-26 22:47 ` Dmitry Osipenko
2021-03-26 22:47 ` Dmitry Osipenko
2021-01-11 13:00 ` [PATCH v5 02/21] gpu: host1x: Allow syncpoints without associated client Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-03-23 10:10 ` Thierry Reding
2021-03-23 10:10 ` Thierry Reding
2021-03-23 10:32 ` Mikko Perttunen
2021-03-23 10:32 ` Mikko Perttunen
2021-01-11 13:00 ` [PATCH v5 03/21] gpu: host1x: Show number of pending waiters in debugfs Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-03-23 10:16 ` Thierry Reding
2021-03-23 10:16 ` Thierry Reding
2021-03-26 14:34 ` Mikko Perttunen
2021-03-26 14:34 ` Mikko Perttunen
2021-04-01 21:19 ` Michał Mirosław
2021-04-01 21:19 ` Michał Mirosław
2021-04-02 16:02 ` Dmitry Osipenko
2021-04-02 16:02 ` Dmitry Osipenko
2021-04-08 4:13 ` Michał Mirosław
2021-04-08 4:13 ` Michał Mirosław
2021-04-08 4:25 ` Michał Mirosław
2021-04-08 4:25 ` Michał Mirosław
2021-04-08 11:58 ` Mikko Perttunen
2021-04-08 11:58 ` Mikko Perttunen
2021-01-11 13:00 ` [PATCH v5 04/21] gpu: host1x: Remove cancelled waiters immediately Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-01-12 22:07 ` Dmitry Osipenko
2021-01-12 22:07 ` Dmitry Osipenko
2021-01-12 22:20 ` Mikko Perttunen
2021-01-12 22:20 ` Mikko Perttunen
2021-01-13 16:29 ` Dmitry Osipenko
2021-01-13 16:29 ` Dmitry Osipenko
2021-01-13 18:16 ` Mikko Perttunen
2021-01-13 18:16 ` Mikko Perttunen
2021-03-23 10:23 ` Thierry Reding
2021-03-23 10:23 ` Thierry Reding
2021-01-11 13:00 ` [PATCH v5 05/21] gpu: host1x: Use HW-equivalent syncpoint expiration check Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-03-23 10:26 ` Thierry Reding
2021-03-23 10:26 ` Thierry Reding
2021-01-11 13:00 ` [PATCH v5 06/21] gpu: host1x: Cleanup and refcounting for syncpoints Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-03-23 10:36 ` Thierry Reding
2021-03-23 10:36 ` Thierry Reding
2021-03-23 10:44 ` Mikko Perttunen
2021-03-23 10:44 ` Mikko Perttunen
2021-03-23 11:21 ` Thierry Reding
2021-03-23 11:21 ` Thierry Reding
2021-01-11 13:00 ` [PATCH v5 07/21] gpu: host1x: Introduce UAPI header Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-03-23 10:52 ` Thierry Reding
2021-03-23 10:52 ` Thierry Reding
2021-03-23 11:12 ` Mikko Perttunen
2021-03-23 11:12 ` Mikko Perttunen
2021-03-23 11:43 ` Thierry Reding
2021-03-23 11:43 ` Thierry Reding
2021-01-11 13:00 ` [PATCH v5 08/21] gpu: host1x: Implement /dev/host1x device node Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-03-23 11:02 ` Thierry Reding
2021-03-23 11:02 ` Thierry Reding
2021-03-23 11:15 ` Mikko Perttunen
2021-03-23 11:15 ` Mikko Perttunen
2021-01-11 13:00 ` [PATCH v5 09/21] gpu: host1x: DMA fences and userspace fence creation Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-03-23 11:15 ` Thierry Reding
2021-03-23 11:15 ` Thierry Reding
2021-01-11 13:00 ` [PATCH v5 10/21] gpu: host1x: Add no-recovery mode Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-01-11 13:00 ` [PATCH v5 11/21] gpu: host1x: Add job release callback Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-03-23 11:55 ` Thierry Reding
2021-03-23 11:55 ` Thierry Reding
2021-01-11 13:00 ` [PATCH v5 12/21] gpu: host1x: Add support for syncpoint waits in CDMA pushbuffer Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-01-11 13:00 ` [PATCH v5 13/21] gpu: host1x: Reset max value when freeing a syncpoint Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-01-11 13:00 ` [PATCH v5 14/21] gpu: host1x: Reserve VBLANK syncpoints at initialization Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-01-11 13:00 ` [PATCH v5 15/21] drm/tegra: Add new UAPI to header Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-01-13 18:14 ` Dmitry Osipenko
2021-01-13 18:14 ` Dmitry Osipenko
2021-01-13 18:56 ` Mikko Perttunen
2021-01-13 18:56 ` Mikko Perttunen
2021-01-14 8:36 ` Dmitry Osipenko
2021-01-14 8:36 ` Dmitry Osipenko
2021-01-14 10:34 ` Mikko Perttunen
2021-01-14 10:34 ` Mikko Perttunen
2021-03-23 12:30 ` Thierry Reding
2021-03-23 12:30 ` Thierry Reding
2021-03-23 14:00 ` Dmitry Osipenko
2021-03-23 14:00 ` Dmitry Osipenko
2021-03-23 16:44 ` Thierry Reding
2021-03-23 16:44 ` Thierry Reding
2021-03-23 17:32 ` Dmitry Osipenko
2021-03-23 17:32 ` Dmitry Osipenko
2021-03-23 17:57 ` Thierry Reding
2021-03-23 17:57 ` Thierry Reding
2021-01-11 13:00 ` [PATCH v5 16/21] drm/tegra: Boot VIC during runtime PM resume Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-01-11 13:00 ` [PATCH v5 17/21] drm/tegra: Set resv fields when importing/exporting GEMs Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-01-11 13:00 ` [PATCH v5 18/21] drm/tegra: Allocate per-engine channel in core code Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-03-23 12:35 ` Thierry Reding
2021-03-23 12:35 ` Thierry Reding
2021-03-23 13:15 ` Mikko Perttunen
2021-03-23 13:15 ` Mikko Perttunen
2021-01-11 13:00 ` [PATCH v5 19/21] drm/tegra: Implement new UAPI Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-01-11 17:37 ` kernel test robot
2021-01-11 17:37 ` kernel test robot
2021-01-11 17:37 ` kernel test robot
2021-01-12 22:27 ` Dmitry Osipenko
2021-01-12 22:27 ` Dmitry Osipenko
2021-03-23 13:25 ` Thierry Reding
2021-03-23 13:25 ` Thierry Reding
2021-03-23 14:43 ` Mikko Perttunen
2021-03-23 14:43 ` Mikko Perttunen
2021-03-23 15:00 ` Dmitry Osipenko
2021-03-23 15:00 ` Dmitry Osipenko
2021-03-23 16:59 ` Thierry Reding
2021-03-23 16:59 ` Thierry Reding
2021-01-11 13:00 ` [PATCH v5 20/21] drm/tegra: Implement job submission part of " Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-03-23 13:38 ` Thierry Reding
2021-03-23 13:38 ` Thierry Reding
2021-03-23 14:16 ` Mikko Perttunen
2021-03-23 14:16 ` Mikko Perttunen
2021-03-23 17:04 ` Thierry Reding
2021-03-23 17:04 ` Thierry Reding
2021-01-11 13:00 ` [PATCH v5 21/21] drm/tegra: Add job firewall Mikko Perttunen
2021-01-11 13:00 ` Mikko Perttunen
2021-01-19 22:29 ` [PATCH v5 00/21] Host1x/TegraDRM UAPI Dmitry Osipenko
2021-01-19 22:29 ` Dmitry Osipenko
2021-01-26 2:45 ` Mikko Perttunen
2021-01-26 2:45 ` Mikko Perttunen
2021-01-27 21:20 ` [PATCH v5 00/21] Host1x sync point UAPI should not be used for tracking DRM jobs Dmitry Osipenko
2021-01-27 21:20 ` Dmitry Osipenko
2021-01-28 11:08 ` Mikko Perttunen
2021-01-28 11:08 ` Mikko Perttunen
2021-01-28 16:58 ` Thierry Reding
2021-01-28 16:58 ` Thierry Reding
2021-01-29 17:30 ` Dmitry Osipenko
2021-01-29 17:30 ` Dmitry Osipenko
2021-02-03 11:18 ` Mikko Perttunen
2021-02-03 11:18 ` Mikko Perttunen
2021-02-27 11:19 ` Dmitry Osipenko
2021-02-27 11:19 ` Dmitry Osipenko
2021-03-01 8:19 ` Mikko Perttunen
2021-03-01 8:19 ` Mikko Perttunen
2021-03-23 18:21 ` Thierry Reding
2021-03-23 18:21 ` Thierry Reding
2021-03-23 19:57 ` Dmitry Osipenko
2021-03-23 19:57 ` Dmitry Osipenko
2021-03-23 20:13 ` Dmitry Osipenko
2021-03-23 20:13 ` Dmitry Osipenko
2021-01-27 21:26 ` [PATCH v5 00/21] Host1x/TegraDRM UAPI Dmitry Osipenko
2021-01-27 21:26 ` Dmitry Osipenko
2021-01-27 21:57 ` Mikko Perttunen
2021-01-27 21:57 ` Mikko Perttunen
2021-01-27 22:06 ` Dmitry Osipenko
2021-01-27 22:06 ` Dmitry Osipenko
2021-01-28 11:46 ` Mikko Perttunen
2021-01-28 11:46 ` Mikko Perttunen
2021-01-27 21:35 ` Dmitry Osipenko [this message]
2021-01-27 21:35 ` [PATCH v5 00/21] sync_file API is not very suitable for DRM Dmitry Osipenko
2021-01-27 21:53 ` Mikko Perttunen
2021-01-27 21:53 ` Mikko Perttunen
2021-01-27 22:26 ` Dmitry Osipenko
2021-01-27 22:26 ` Dmitry Osipenko
2021-01-27 21:52 ` [PATCH v5 00/21] support option where all commands are collected into a single,dedicated cmdstream Dmitry Osipenko
2021-01-27 21:52 ` Dmitry Osipenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=c690b17d-7278-5d25-8316-671afd111e01@gmail.com \
--to=digetx@gmail.com \
--cc=airlied@linux.ie \
--cc=bhuntsman@nvidia.com \
--cc=cyndis@kapsi.fi \
--cc=daniel@ffwll.ch \
--cc=dri-devel@lists.freedesktop.org \
--cc=jonathanh@nvidia.com \
--cc=linux-tegra@vger.kernel.org \
--cc=mperttunen@nvidia.com \
--cc=talho@nvidia.com \
--cc=thierry.reding@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.