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| author | Chris Wilson | 2017-04-15 11:39:02 +0200 |
|---|---|---|
| committer | Chris Wilson | 2017-04-15 13:39:57 +0200 |
| commit | b0fd47adc6233e4c198a97e1ddb05accd31eeacb (patch) | |
| tree | f99e371e5d15c0ab0783a2a0bc7467f5f7a8c4b7 /drivers/gpu/drm/i915/i915_drv.c | |
| parent | drm/i915: set "ret" correctly on error paths (diff) | |
| download | kernel-qcow2-linux-b0fd47adc6233e4c198a97e1ddb05accd31eeacb.tar.gz kernel-qcow2-linux-b0fd47adc6233e4c198a97e1ddb05accd31eeacb.tar.xz kernel-qcow2-linux-b0fd47adc6233e4c198a97e1ddb05accd31eeacb.zip | |
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
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index bd85e3826b72..cc7393e65e99 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -350,6 +350,7 @@ static int i915_getparam(struct drm_device *dev, void *data, case I915_PARAM_HAS_EXEC_SOFTPIN: case I915_PARAM_HAS_EXEC_ASYNC: case I915_PARAM_HAS_EXEC_FENCE: + case I915_PARAM_HAS_EXEC_CAPTURE: /* For the time being all of these are always true; * if some supported hardware does not have one of these * features this value needs to be provided from |