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drm/i915: Clear the error PTE just once on finish

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We do not need to continually clear our dedicated PTE for error capture
as it will be updated and invalidated to the next object. Only at the
end do we wish to be sure that the PTE doesn't point back to any buffer.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181001194447.29910-3-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2018-10-01 20:44:46 +01:00
parent 83bc0f5b43
commit 8f5c6fe46d
1 changed files with 9 additions and 1 deletions
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10
drivers/gpu/drm/i915/i915_gpu_error.c
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@ -999,7 +999,6 @@ i915_error_object_create(struct drm_i915_private *i915,
}
compress_fini(&compress, dst);
ggtt->vm.clear_range(&ggtt->vm, slot, PAGE_SIZE);
return dst;
}
@ -1785,6 +1784,14 @@ static unsigned long capture_find_epoch(const struct i915_gpu_state *error)
return epoch;
}
static void capture_finish(struct i915_gpu_state *error)
{
struct i915_ggtt *ggtt = &error->i915->ggtt;
const u64 slot = ggtt->error_capture.start;
ggtt->vm.clear_range(&ggtt->vm, slot, PAGE_SIZE);
}
static int capture(void *data)
{
struct i915_gpu_state *error = data;
@ -1809,6 +1816,7 @@ static int capture(void *data)
error->epoch = capture_find_epoch(error);
capture_finish(error);
return 0;
}