[dpdk-stable] [PATCH] net/ixgbe: fix resource leak after thread exits normally

[taox.zhu@intel.com]

From: "Zhu, Tao" <taox.zhu@intel.com>

When the thread exits normally, pthread_join() is not called, which can
result in a resource leak. Therefore, the thread is set to separation
mode using function pthread_detach(), so that no program call
pthread_join() is required to recycle, and when the thread exits,
the system automatically reclaims resources.

Fixes: 819d0d1d57f1 ("net/ixgbe: fix blocking system events")
Cc: stable@dpdk.org

Signed-off-by: Zhu Tao <taox.zhu@intel.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 2c57976..f141ae4 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -4165,11 +4165,9 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev,
 ixgbe_dev_cancel_link_thread(struct rte_eth_dev *dev)
 {
 	struct ixgbe_adapter *ad = dev->data->dev_private;
-	void *retval;
 
 	if (!ixgbe_dev_wait_setup_link_complete(dev)) {
 		pthread_cancel(ad->link_thread_tid);
-		pthread_join(ad->link_thread_tid, &retval);
 		rte_atomic32_clear(&ad->link_thread_running);
 		PMD_DRV_LOG(ERR, "Link thread not complete, cancel it!");
 	}
@@ -4186,6 +4184,7 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev,
 	u32 speed;
 	bool autoneg = false;
 
+	pthread_detach(pthread_self());
 	speed = hw->phy.autoneg_advertised;
 	if (!speed)
 		ixgbe_get_link_capabilities(hw, &speed, &autoneg);
-- 
1.8.3.1