Chris Wilson b0fd47adc6 drm/i915: Copy user requested buffers into the error state
Introduce a new execobject.flag (EXEC_OBJECT_CAPTURE) that userspace may
use to indicate that it wants the contents of this buffer preserved in
the error state (/sys/class/drm/cardN/error) following a GPU hang
involving this batch.

Use this at your discretion, the contents of the error state. although
compressed, are allocated with GFP_ATOMIC (i.e. limited) and kept for all
eternity (until the error state is destroyed).

Based on an earlier patch by Ben Widawsky <ben@bwidawsk.net>
Testcase: igt/gem_exec_capture
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Matt Turner <mattst88@gmail.com>
Acked-by: Ben Widawsky <ben@bwidawsk.net>
Acked-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170415093902.22581-1-chris@chris-wilson.co.uk
2017-04-15 12:39:57 +01:00
..
2017-04-07 13:48:26 +02:00
2017-02-23 15:57:04 -08:00
2017-03-28 17:34:19 +10:00
2017-03-23 16:08:46 -07:00
2017-03-10 19:56:56 -08:00
2017-04-03 21:57:20 +05:30
2017-04-11 07:40:42 +10:00
2017-03-31 16:54:48 +02:00
2017-03-24 13:34:16 -07:00
2017-03-06 08:37:53 -08:00
2017-02-21 11:51:42 -08:00
2017-03-26 11:15:54 -07:00
2017-04-11 07:40:42 +10:00
2017-03-20 16:25:06 +01:00
2017-03-01 09:46:02 -08:00
2017-02-20 17:23:57 -08:00
2017-02-23 15:57:04 -08:00
2017-03-02 13:53:13 -08:00
2017-03-24 14:39:36 -07:00
2017-02-23 11:53:22 -08:00