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From: Daniel Vetter <daniel.vetter@ffwll.ch>
To: "Christian König" <deathsimple@vodafone.de>
Cc: "Maarten Lankhorst" <maarten.lankhorst@canonical.com>,
	"Christian König" <christian.koenig@amd.com>,
	"Thomas Hellstrom" <thellstrom@vmware.com>,
	nouveau <nouveau@lists.freedesktop.org>,
	LKML <linux-kernel@vger.kernel.org>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	"Ben Skeggs" <bskeggs@redhat.com>,
	"Deucher, Alexander" <alexander.deucher@amd.com>
Subject: Re: [Nouveau] [PATCH 09/17] drm/radeon: use common fence implementation for fences
Date: Wed, 23 Jul 2014 10:07:09 +0200	[thread overview]
Message-ID: <CAKMK7uGd65HR11thcv8KjDw-RnTa7W-QGOzFGFd+oO_hp8wyHA@mail.gmail.com> (raw)
In-Reply-To: <53CF6B18.5070107@vodafone.de>

On Wed, Jul 23, 2014 at 9:58 AM, Christian König
<deathsimple@vodafone.de> wrote:
> Just imagine an application using prime is locking up Radeon and because of
> that gets killed by the user. Nothing else in the system would use the
> Radeon hardware any more and so radeon gets only called by another driver
> waiting patiently for radeon to finish rendering which never happens because
> the whole thing is locked up and we don't get a chance to recover.

But isn't that possible already without fences? X hangs radeon, user
crashes X for unrelated reasons before radeon will notice the hang.
Then no one uses radeon any longer and the hang stays undetected.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch

  reply	other threads:[~2014-07-23  8:07 UTC|newest]

Thread overview: 94+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-09 12:29 [PATCH 00/17] Convert TTM to the new fence interface Maarten Lankhorst
2014-07-09 12:29 ` [PATCH 01/17] drm/ttm: add interruptible parameter to ttm_eu_reserve_buffers Maarten Lankhorst
2014-07-09 12:29 ` [PATCH 02/17] drm/ttm: kill off some members to ttm_validate_buffer Maarten Lankhorst
2014-07-09 12:29 ` [PATCH 03/17] drm/nouveau: add reservation to nouveau_gem_ioctl_cpu_prep Maarten Lankhorst
2014-07-09 12:29 ` [PATCH 04/17] drm/nouveau: require reservations for nouveau_fence_sync and nouveau_bo_fence Maarten Lankhorst
2014-07-09 12:29 ` [PATCH 05/17] drm/ttm: call ttm_bo_wait while inside a reservation Maarten Lankhorst
2014-07-09 12:29 ` [PATCH 06/17] drm/ttm: kill fence_lock Maarten Lankhorst
2014-07-09 12:29 ` [PATCH 07/17] drm/nouveau: rework to new fence interface Maarten Lankhorst
2014-07-09 12:29 ` [PATCH 08/17] drm/radeon: add timeout argument to radeon_fence_wait_seq Maarten Lankhorst
2014-07-09 12:29 ` [PATCH 09/17] drm/radeon: use common fence implementation for fences Maarten Lankhorst
2014-07-09 12:57   ` Deucher, Alexander
2014-07-09 13:23     ` [PATCH v2 " Maarten Lankhorst
2014-07-10 17:27       ` Alex Deucher
2014-07-22  4:05   ` [PATCH " Dave Airlie
2014-07-22  8:43     ` Christian König
2014-07-22 11:46       ` Daniel Vetter
2014-07-22 11:52         ` Daniel Vetter
2014-07-22 11:57         ` Daniel Vetter
2014-07-22 12:19           ` Christian König
2014-07-22 13:26             ` [Nouveau] " Daniel Vetter
2014-07-22 13:45               ` Christian König
2014-07-22 14:44                 ` Maarten Lankhorst
2014-07-22 15:02                   ` Christian König
2014-07-22 15:18                     ` Maarten Lankhorst
2014-07-22 15:17                 ` Daniel Vetter
2014-07-22 15:35                   ` Christian König
2014-07-22 15:42                     ` Daniel Vetter
2014-07-22 15:59                       ` Christian König
2014-07-22 16:21                         ` Daniel Vetter
2014-07-22 16:39                           ` Christian König
2014-07-22 16:52                             ` Daniel Vetter
2014-07-22 16:43                           ` Daniel Vetter
2014-07-23  6:40                         ` Maarten Lankhorst
2014-07-23  6:52                           ` Christian König
2014-07-23  7:02                             ` Daniel Vetter
2014-07-23  7:06                             ` Maarten Lankhorst
2014-07-23  7:09                               ` Daniel Vetter
2014-07-23  7:15                                 ` Christian König
2014-07-23  7:32                                   ` Maarten Lankhorst
2014-07-23  7:41                                     ` Christian König
2014-07-23  7:26                               ` Christian König
2014-07-23  7:31                                 ` Daniel Vetter
2014-07-23  7:37                                   ` Christian König
2014-07-23  7:51                                     ` Maarten Lankhorst
2014-07-23  7:58                                       ` Christian König
2014-07-23  8:07                                         ` Daniel Vetter [this message]
2014-07-23  8:20                                           ` Christian König
2014-07-23  8:25                                             ` Maarten Lankhorst
2014-07-23  8:42                                               ` Daniel Vetter
2014-07-23  8:46                                                 ` Christian König
2014-07-23  8:54                                                   ` Daniel Vetter
2014-07-23  9:27                                                     ` Christian König
2014-07-23  9:30                                                       ` Daniel Vetter
2014-07-23  9:36                                                         ` Christian König
2014-07-23  9:38                                                           ` Maarten Lankhorst
2014-07-23  9:39                                                             ` Christian König
2014-07-23  9:39                                                           ` Daniel Vetter
2014-07-23  9:44                                                             ` Daniel Vetter
2014-07-23  9:47                                                               ` Christian König
2014-07-23  9:52                                                                 ` Daniel Vetter
2014-07-23  9:55                                                                 ` Maarten Lankhorst
2014-07-23 10:13                                                                   ` Christian König
2014-07-23 10:52                                                                     ` Daniel Vetter
2014-07-23 12:36                                                                       ` Christian König
2014-07-23 12:42                                                                         ` Daniel Vetter
2014-07-23 13:16                                                                         ` Maarten Lankhorst
2014-07-23 14:05                                                                           ` Maarten Lankhorst
2014-07-24 13:47                                                                             ` Christian König
2014-07-23  8:01                                     ` Daniel Vetter
2014-07-23  8:31                                       ` Christian König
2014-07-23 12:35                             ` Rob Clark
2014-07-22 14:05             ` Maarten Lankhorst
2014-07-22 14:24               ` Christian König
2014-07-22 14:27                 ` Maarten Lankhorst
2014-07-22 14:39                   ` Christian König
2014-07-22 14:47                     ` Maarten Lankhorst
2014-07-22 15:16                       ` Christian König
2014-07-22 15:19                     ` Daniel Vetter
2014-07-22 15:42                       ` Alex Deucher
2014-07-22 15:48                         ` Daniel Vetter
2014-07-22 19:14                           ` Jesse Barnes
2014-07-23  9:47                             ` [Nouveau] " Daniel Vetter
2014-07-23 15:37                               ` Jesse Barnes
2014-07-22 11:51     ` Maarten Lankhorst
2014-07-09 12:29 ` [PATCH 10/17] drm/qxl: rework to new fence interface Maarten Lankhorst
2014-07-09 12:30 ` [PATCH 11/17] drm/vmwgfx: get rid of different types of fence_flags entirely Maarten Lankhorst
2014-07-09 12:30 ` [PATCH 12/17] drm/vmwgfx: rework to new fence interface Maarten Lankhorst
2014-07-09 12:30 ` [PATCH 13/17] drm/ttm: flip the switch, and convert to dma_fence Maarten Lankhorst
2014-07-09 12:30 ` [PATCH 14/17] drm/nouveau: use rcu in nouveau_gem_ioctl_cpu_prep Maarten Lankhorst
2014-07-09 12:30 ` [PATCH 15/17] drm/radeon: use rcu waits in some ioctls Maarten Lankhorst
2014-07-09 12:30 ` [PATCH 16/17] drm/vmwgfx: use rcu in vmw_user_dmabuf_synccpu_grab Maarten Lankhorst
2014-07-09 12:30 ` [PATCH 17/17] drm/ttm: use rcu in core ttm Maarten Lankhorst
     [not found] ` <CAHbf0-HaFi0px7QGfBErKenH7wDU08B5mxo_QhFJdDPC4WBDrQ@mail.gmail.com>
2014-07-09 13:21   ` [PATCH 00/17] Convert TTM to the new fence interface Maarten Lankhorst
2014-07-10 21:37 ` Thomas Hellström

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