]> git.baikalelectronics.ru Git - kernel.git/commit
drm/i915: Prevent timeline updates whilst performing reset
authorChris Wilson <chris@chris-wilson.co.uk>
Fri, 23 Dec 2016 14:58:04 +0000 (14:58 +0000)
committerJani Nikula <jani.nikula@intel.com>
Tue, 3 Jan 2017 09:41:57 +0000 (11:41 +0200)
commit6a54b0e8e06b7721f71e1e5a731542468915030a
tree72c3347b2022652f8e539284ba6f265c454e6cd8
parent1a954d174de12631f96f02db6d1ce17e408051fa
drm/i915: Prevent timeline updates whilst performing reset

As the fence may be signaled concurrently from an interrupt on another
device, it is possible for the list of requests on the timeline to be
modified as we walk it. Take both (the context's timeline and the global
timeline) locks to prevent such modifications.

Fixes: 76fa73690e46 ("drm/i915: Enable multiple timelines")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: <drm-intel-fixes@lists.freedesktop.org>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161223145804.6605-10-chris@chris-wilson.co.uk
(cherry picked from commit 00c25e3f40083a6d5f1111955baccd287ee49258)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drivers/gpu/drm/i915/i915_gem.c