[dpdk-dev] [PATCH] net/mlx5: only register memory callback when probing a device

[David Marchand <david.marchand@6wind.com>]

The callback should be invoked only for memory that has been registered
in a device, hence, no need to track cleanup events if no device is
present.

Bugzilla-ID: 56
Fixes: 974f1e7ef146 ("net/mlx5: add new memory region support")

Signed-off-by: David Marchand <david.marchand@6wind.com>
---
 drivers/net/mlx5/mlx5.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index d77a20db4..601d03f71 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -138,6 +138,8 @@ mlx5_prepare_shared_data(void)
 			LIST_INIT(&mlx5_shared_data->mem_event_cb_list);
 			rte_rwlock_init(&mlx5_shared_data->mem_event_rwlock);
 		}
+		rte_mem_event_callback_register("MLX5_MEM_EVENT_CB",
+						mlx5_mr_mem_event_cb, NULL);
 	}
 	rte_spinlock_unlock(&mlx5_shared_data_lock);
 }
@@ -1460,8 +1462,6 @@ rte_mlx5_pmd_init(void)
 	}
 	mlx5_glue->fork_init();
 	rte_pci_register(&mlx5_driver);
-	rte_mem_event_callback_register("MLX5_MEM_EVENT_CB",
-					mlx5_mr_mem_event_cb, NULL);
 }
 
 RTE_PMD_EXPORT_NAME(net_mlx5, __COUNTER__);
-- 
2.11.0