When rescheduling a change of dependencies, they all need to be added to
the same priolist (at least the ones on the same engine!). Since we
likely want to move a batch of requests, keep the priolist around.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/intel_lrc.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index a9d211f28ab8..28a02d3b53a4 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1197,7 +1197,8 @@ sched_lock_engine(struct i915_sched_node *node, struct
intel_engine_cs *locked)
static void execlists_schedule(struct i915_request *request,
const struct i915_sched_attr *attr)
{
- struct intel_engine_cs *engine;
+ struct i915_priolist *uninitialized_var(pl);
+ struct intel_engine_cs *engine, *last;
struct i915_dependency *dep, *p;
struct i915_dependency stack;
const int prio = attr->priority;
@@ -1270,6 +1271,7 @@ static void execlists_schedule(struct i915_request
*request,
__list_del_entry(&stack.dfs_link);
}
+ last = NULL;
engine = request->engine;
spin_lock_irq(&engine->timeline.lock);
@@ -1286,8 +1288,11 @@ static void execlists_schedule(struct i915_request
*request,
node->attr.priority = prio;
if (!list_empty(&node->link)) {
- __list_del_entry(&node->link);
- queue_request(engine, node, prio);
+ if (last != engine) {
+ pl = lookup_priolist(engine, prio);
+ last = engine;
+ }
+ list_move_tail(&node->link, &pl->requests);
}
if (prio > engine->execlists.queue_priority &&
--
2.17.0
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