]> git.baikalelectronics.ru Git - kernel.git/commit
drm/i915: Stop automatically retiring requests after a GPU hang
authorChris Wilson <chris@chris-wilson.co.uk>
Fri, 13 May 2016 10:57:22 +0000 (11:57 +0100)
committerChris Wilson <chris@chris-wilson.co.uk>
Fri, 13 May 2016 11:39:20 +0000 (12:39 +0100)
commit23d802d615eab6b8e2a5295347bee08b50b3f004
tree47e4a791111cbc6385ce3d0e0bf5b6a9ce23df23
parent1eccb28339c934d1ff86be02243a828dc3446645
drm/i915: Stop automatically retiring requests after a GPU hang

Following a GPU hang, we break out of the request loop in order to
unlock the struct_mutex for use by the GPU reset. However, if we retire
all the requests at that moment, we cannot identify the guilty request
after performing the reset.

v2: Not automatically retiring requests forces us to recheck for
available ringspace.

Fixes: b9d1c77e23d4 ("drm/i915: Prevent leaking of -EIO from i915_wait_request()")
Testcase: igt/gem_reset_stats/ban-*
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Tested-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1463137042-9669-4-git-send-email-chris@chris-wilson.co.uk
drivers/gpu/drm/i915/i915_gem.c
drivers/gpu/drm/i915/intel_ringbuffer.c