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drm/i915: Always propagate the invocation to i915_schedule 

We only call i915_schedule() when we know we have changed the priority
on a request and so require to propagate any change in priority to its
signalers (for PI). By unconditionally checking all of our signalers, we
avoid skipping changes made prior to construction of the request (as the
request may be waited upon before submission when used in parallel).

References: https://gitlab.freedesktop.org/drm/intel/issues/1318
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200306071614.2846708-2-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2020-03-06 07:16:13 +00:00
parent 1eaa251b66
commit 26fc4e4ba1
1 changed files with 1 additions and 4 deletions
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5
drivers/gpu/drm/i915/i915_scheduler.c
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@ -227,10 +227,10 @@ unlock:
static void __i915_schedule(struct i915_sched_node *node,
const struct i915_sched_attr *attr)
{
const int prio = max(attr->priority, node->attr.priority);
struct intel_engine_cs *engine;
struct i915_dependency *dep, *p;
struct i915_dependency stack;
const int prio = attr->priority;
struct sched_cache cache;
LIST_HEAD(dfs);
@ -238,9 +238,6 @@ static void __i915_schedule(struct i915_sched_node *node,
lockdep_assert_held(&schedule_lock);
GEM_BUG_ON(prio == I915_PRIORITY_INVALID);
if (prio <= READ_ONCE(node->attr.priority))
return;
if (node_signaled(node))
return;