| Message ID | 20200220123608.1666271-1-chris@chris-wilson.co.uk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/2] drm/i915: Double check bumping after the spinlock | expand |
On 20/02/2020 12:36, Chris Wilson wrote: > 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>
diff --git a/drivers/gpu/drm/i915/i915_scheduler.c b/drivers/gpu/drm/i915/i915_scheduler.c index 59f70b674665..be770f2419b1 100644 --- a/drivers/gpu/drm/i915/i915_scheduler.c +++ b/drivers/gpu/drm/i915/i915_scheduler.c @@ -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); }
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> --- drivers/gpu/drm/i915/i915_scheduler.c | 3 +++ 1 file changed, 3 insertions(+)