From: "Christian König" <christian.koenig@amd.com>
To: "Michel Dänzer" <michel@daenzer.net>
Cc: ML dri-devel <dri-devel@lists.freedesktop.org>
Subject: Re: [PATCH 2/3] drm/scheduler: Don't call wait_event_killable for signaled process.
Date: Fri, 18 May 2018 16:50:05 +0200 [thread overview]
Message-ID: <f15fa855-300f-7287-5a62-494c812e72dc@amd.com> (raw)
In-Reply-To: <823b24bf-cc4a-2f69-4c32-0b7110bbce81@daenzer.net>
Am 18.05.2018 um 16:44 schrieb Michel Dänzer:
> On 2018-05-18 11:42 AM, Christian König wrote:
>>> Anyway, the kernel can't rely on userspace using O_CLOEXEC. If the flush
>>> callback being called from multiple processes is an issue, maybe the
>>> flush callback isn't appropriate after all.
>> Userspace could also grab a reference just by opening /proc/$pid/fd/*.
>>
>> The idea is just that when any process which used the fd is killed by a
>> signal we drop the remaining jobs from being submitted to the hardware.
> This must only affect jobs submitted by the killed process, not those
> submitted by other processes.
Yeah, that's exactly the plan here.
For additional security we could safe the pid of the job submitter, but
since this should basically not happen in normal operation I would
rather like to avoid that.
Christian.
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next prev parent reply other threads:[~2018-05-18 14:50 UTC|newest]
Thread overview: 122+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-24 15:30 Avoid uninterruptible sleep during process exit Andrey Grodzovsky
2018-04-24 15:30 ` Andrey Grodzovsky
2018-04-24 15:30 ` [PATCH 1/3] signals: Allow generation of SIGKILL to exiting task Andrey Grodzovsky
2018-04-24 15:30 ` Andrey Grodzovsky
2018-04-24 16:10 ` Eric W. Biederman
2018-04-24 16:10 ` Eric W. Biederman
2018-04-24 16:42 ` Eric W. Biederman
2018-04-24 16:42 ` Eric W. Biederman
2018-04-24 16:51 ` Andrey Grodzovsky
2018-04-24 16:51 ` Andrey Grodzovsky
2018-04-24 17:29 ` Eric W. Biederman
2018-04-25 13:13 ` Oleg Nesterov
2018-04-24 15:30 ` [PATCH 2/3] drm/scheduler: Don't call wait_event_killable for signaled process Andrey Grodzovsky
2018-04-24 15:30 ` Andrey Grodzovsky
2018-04-24 15:46 ` Michel Dänzer
2018-04-24 15:51 ` Andrey Grodzovsky
2018-04-24 15:51 ` Andrey Grodzovsky
2018-04-24 15:52 ` Andrey Grodzovsky
2018-04-24 15:52 ` Andrey Grodzovsky
2018-04-24 19:44 ` Daniel Vetter
2018-04-24 19:44 ` Daniel Vetter
2018-04-24 21:00 ` Eric W. Biederman
2018-04-24 21:02 ` Andrey Grodzovsky
2018-04-24 21:02 ` Andrey Grodzovsky
2018-04-24 21:21 ` Eric W. Biederman
2018-04-24 21:37 ` Andrey Grodzovsky
2018-04-24 21:37 ` Andrey Grodzovsky
2018-04-24 22:11 ` Eric W. Biederman
2018-04-25 7:14 ` Daniel Vetter
2018-04-25 13:08 ` Andrey Grodzovsky
2018-04-25 13:08 ` Andrey Grodzovsky
2018-04-25 15:29 ` Eric W. Biederman
2018-04-25 16:13 ` Andrey Grodzovsky
2018-04-25 16:31 ` Eric W. Biederman
2018-04-24 21:40 ` Daniel Vetter
2018-04-24 21:40 ` Daniel Vetter
2018-04-25 13:22 ` Oleg Nesterov
2018-04-25 13:36 ` Daniel Vetter
2018-04-25 14:18 ` Oleg Nesterov
2018-04-25 14:18 ` Oleg Nesterov
2018-04-25 13:43 ` Andrey Grodzovsky
2018-04-25 13:43 ` Andrey Grodzovsky
2018-04-24 16:23 ` Eric W. Biederman
2018-04-24 16:23 ` Eric W. Biederman
2018-04-24 16:43 ` Andrey Grodzovsky
2018-04-24 16:43 ` Andrey Grodzovsky
2018-04-24 17:12 ` Eric W. Biederman
2018-04-25 13:55 ` Oleg Nesterov
2018-04-25 14:21 ` Andrey Grodzovsky
2018-04-25 14:21 ` Andrey Grodzovsky
2018-04-25 17:17 ` Oleg Nesterov
2018-04-25 18:40 ` Andrey Grodzovsky
2018-04-25 18:40 ` Andrey Grodzovsky
2018-04-26 0:01 ` Eric W. Biederman
2018-04-26 12:34 ` Andrey Grodzovsky
2018-04-26 12:34 ` Andrey Grodzovsky
2018-04-26 12:52 ` Andrey Grodzovsky
2018-04-26 12:52 ` Andrey Grodzovsky
2018-04-26 15:57 ` Eric W. Biederman
2018-04-26 20:43 ` Andrey Grodzovsky
2018-04-26 20:43 ` Andrey Grodzovsky
2018-04-30 12:08 ` Christian König
2018-04-30 12:08 ` Christian König
2018-04-30 14:32 ` Andrey Grodzovsky
2018-04-30 14:32 ` Andrey Grodzovsky
2018-04-30 15:25 ` Christian König
2018-04-30 15:25 ` Christian König
2018-04-30 16:00 ` Oleg Nesterov
2018-04-30 16:10 ` Andrey Grodzovsky
2018-04-30 16:10 ` Andrey Grodzovsky
2018-04-30 18:29 ` Christian König
2018-04-30 18:29 ` Christian König
2018-04-30 19:28 ` Andrey Grodzovsky
2018-04-30 19:28 ` Andrey Grodzovsky
2018-05-02 11:48 ` Christian König
2018-05-02 11:48 ` Christian König
2018-05-17 11:18 ` Andrey Grodzovsky
2018-05-17 14:48 ` Michel Dänzer
2018-05-17 15:33 ` Andrey Grodzovsky
2018-05-17 15:52 ` Michel Dänzer
2018-05-17 19:05 ` Andrey Grodzovsky
2018-05-18 8:46 ` Michel Dänzer
2018-05-18 9:42 ` Christian König
2018-05-18 14:44 ` Michel Dänzer
2018-05-18 14:50 ` Christian König [this message]
2018-05-18 15:02 ` Andrey Grodzovsky
2018-05-22 12:58 ` Christian König
2018-05-22 15:49 ` Andrey Grodzovsky
2018-05-22 16:09 ` Michel Dänzer
2018-05-22 16:30 ` Andrey Grodzovsky
2018-05-22 16:33 ` Michel Dänzer
2018-05-22 16:37 ` Andrey Grodzovsky
2018-05-01 14:35 ` Oleg Nesterov
2018-05-23 15:08 ` Andrey Grodzovsky
2018-05-23 15:08 ` Andrey Grodzovsky
2018-04-30 15:29 ` Oleg Nesterov
2018-04-30 16:25 ` Eric W. Biederman
2018-04-30 17:18 ` Andrey Grodzovsky
2018-04-30 17:18 ` Andrey Grodzovsky
2018-04-25 13:05 ` Oleg Nesterov
2018-04-24 15:30 ` [PATCH 3/3] drm/amdgpu: Switch to interrupted wait to recover from ring hang Andrey Grodzovsky
2018-04-24 15:30 ` Andrey Grodzovsky
2018-04-24 15:52 ` Panariti, David
2018-04-24 15:52 ` Panariti, David
2018-04-24 15:58 ` Andrey Grodzovsky
2018-04-24 15:58 ` Andrey Grodzovsky
2018-04-24 16:20 ` Panariti, David
2018-04-24 16:20 ` Panariti, David
2018-04-24 16:30 ` Eric W. Biederman
2018-04-24 16:30 ` Eric W. Biederman
2018-04-25 17:17 ` Andrey Grodzovsky
2018-04-25 17:17 ` Andrey Grodzovsky
2018-04-25 20:55 ` Eric W. Biederman
2018-04-25 20:55 ` Eric W. Biederman
2018-04-26 12:28 ` Andrey Grodzovsky
2018-04-26 12:28 ` Andrey Grodzovsky
2018-04-24 16:14 ` Eric W. Biederman
2018-04-24 16:14 ` Eric W. Biederman
2018-04-24 16:38 ` Andrey Grodzovsky
2018-04-24 16:38 ` Andrey Grodzovsky
2018-04-30 11:34 ` Christian König
2018-04-30 11:34 ` Christian König
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