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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2020-02-20 12:36:07 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-02-20 13:27:36 +0000 |
| commit | 54738e8ad5a5e5eeab7cc762de022b00bcd9af9f (patch) | |
| tree | 1cdb46c554ca20841b84eaccee2c8c0833b94471 /drivers/gpu/drm/i915/i915_scheduler.c | |
| parent | drm/i915/gt: Protect signaler walk with RCU (diff) | |
| download | linux-dev-54738e8ad5a5e5eeab7cc762de022b00bcd9af9f.tar.xz linux-dev-54738e8ad5a5e5eeab7cc762de022b00bcd9af9f.zip | |
drm/i915: Double check bumping after the spinlock
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
Diffstat (limited to 'drivers/gpu/drm/i915/i915_scheduler.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_scheduler.c | 3 |
1 files changed, 3 insertions, 0 deletions
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); } |