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drm/i915: Defer kicking the tasklet until all rescheduling is complete

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Since we may kick more than engine, and may kick each one a couple of
times, coalesce the tasklet execution to the end. This also ensures that
we have the chance to run the tasklet immediately after priority
bumping.

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/20200331114852.11583-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2020-03-31 12:48:52 +01:00
parent 9f7ffa2979
commit 86dbf52d26
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/i915_scheduler.c
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@ -464,11 +464,15 @@ int i915_sched_node_add_dependency(struct i915_sched_node *node,
if (!dep)
return -ENOMEM;
local_bh_disable();
if (!__i915_sched_node_add_dependency(node, signal, dep,
I915_DEPENDENCY_EXTERNAL |
I915_DEPENDENCY_ALLOC))
i915_dependency_free(dep);
local_bh_enable(); /* kick submission tasklet */
return 0;
}