diff options
| -rw-r--r-- | drivers/gpu/drm/amd/scheduler/sched_fence.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/scheduler/sched_fence.c b/drivers/gpu/drm/amd/scheduler/sched_fence.c index 87c78eecea64..dc115aea352b 100644 --- a/drivers/gpu/drm/amd/scheduler/sched_fence.c +++ b/drivers/gpu/drm/amd/scheduler/sched_fence.c @@ -84,12 +84,33 @@ static bool amd_sched_fence_enable_signaling(struct fence *f) return true; } -static void amd_sched_fence_release(struct fence *f) +/** + * amd_sched_fence_free - free up the fence memory + * + * @rcu: RCU callback head + * + * Free up the fence memory after the RCU grace period. + */ +static void amd_sched_fence_free(struct rcu_head *rcu) { + struct fence *f = container_of(rcu, struct fence, rcu); struct amd_sched_fence *fence = to_amd_sched_fence(f); kmem_cache_free(sched_fence_slab, fence); } +/** + * amd_sched_fence_release - callback that fence can be freed + * + * @fence: fence + * + * This function is called when the reference count becomes zero. + * It just RCU schedules freeing up the fence. + */ +static void amd_sched_fence_release(struct fence *f) +{ + call_rcu(&f->rcu, amd_sched_fence_free); +} + const struct fence_ops amd_sched_fence_ops = { .get_driver_name = amd_sched_fence_get_driver_name, .get_timeline_name = amd_sched_fence_get_timeline_name, |