The synchronize_rcu call in destroy_events can take several ms, which
noticeably slows down applications destroying many events. Use kfree_rcu
to free the event structure asynchronously and eliminate the
synchronize_rcu call in the user thread.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
p->signal_event_count--;
idr_remove(&p->event_idr, ev->event_id);
- synchronize_rcu();
- kfree(ev);
+ kfree_rcu(ev, rcu);
}
static void destroy_events(struct kfd_process *p)
struct kfd_hsa_memory_exception_data memory_exception_data;
struct kfd_hsa_hw_exception_data hw_exception_data;
};
+
+ struct rcu_head rcu; /* for asynchronous kfree_rcu */
};
#define KFD_EVENT_TIMEOUT_IMMEDIATE 0