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drm/i915: Double check bumping after the spinlock

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In preparation for making GEM execbuf parallel, we need to be prepared
to handle very early declaration of dependencies -- even before our
signaler has itself been submitted.

References: a79ca656b648 ("drm/i915: Push the wakeref->count deferral to the backend")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200220123608.1666271-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2020-02-20 12:36:07 +00:00
parent 66940061a5
commit 54738e8ad5
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/i915/i915_scheduler.c
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@ -363,6 +363,9 @@ static void __bump_priority(struct i915_sched_node *node, unsigned int bump)
{
struct i915_sched_attr attr = node->attr;
if (attr.priority & bump)
return;
attr.priority |= bump;
__i915_schedule(node, &attr);
}