From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 57516A0598; Tue, 21 Apr 2020 12:11:51 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 2FF631D5C0; Tue, 21 Apr 2020 12:11:51 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id E50FC1D57C; Tue, 21 Apr 2020 12:11:49 +0200 (CEST) IronPort-SDR: at/XgoSkqkyh/iGuAVTbZZxkrogKJN4n15ea6GBpheMEqX1RdT+2XWOFI08GEoIQ93Q1AmGd7j v9PMgy41fWOQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Apr 2020 03:11:48 -0700 IronPort-SDR: zB5Rgt45jSvIrDXsb8NKexJBvzsflykaXC0YJWsNhJS2NKWqyaSh+J888jVqt5+Mj4xYC1E5Rw SwJNWLB5ofMg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,410,1580803200"; d="scan'208";a="273475783" Received: from unknown (HELO localhost.localdomain) ([10.240.183.95]) by orsmga002.jf.intel.com with ESMTP; 21 Apr 2020 03:11:46 -0700 From: taox.zhu@intel.com To: konstantin.ananyev@intel.com, wenzhuo.lu@intel.com, xiaolong.ye@intel.com Cc: dev@dpdk.org, martin.weiser@allegro-packets.com, Zhu Tao , stable@dpdk.org Date: Tue, 21 Apr 2020 18:53:20 +0000 Message-Id: <20200421185320.16946-1-taox.zhu@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <1586495895-9610-1-git-send-email-taox.zhu@intel.com> References: <1586495895-9610-1-git-send-email-taox.zhu@intel.com> Subject: [dpdk-dev] [PATCH v5] net/ixgbe: fix resource leak after thread exits normally X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Zhu Tao 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. Wait for the thread to finish with timeout argument(0 means that it will not return until link complete), wait until the thread finishes before returning. Normally, the thread will finish in a shorter time, and give a warning message if it hasn't finished in a longer time. Fixes: 819d0d1d57f1 ("net/ixgbe: fix blocking system events") Cc: stable@dpdk.org Signed-off-by: Zhu Tao --- drivers/net/ixgbe/ixgbe_ethdev.c | 57 +++++++++++++++++++--------------------- 1 file changed, 27 insertions(+), 30 deletions(-) V5 changes: Modify the definition of function ixgbe_dev_wait_setup_link_complete(), so that the caller can choose whether to block, etc. v4 changes: Format codes. v3 changes: 1. Wait for the thread to finish without setting the timeout, and the corresponding function name has also been modified. 2. Commit log. v2 changes: Commit log. diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c index 2c57976..92788ee 100644 --- a/drivers/net/ixgbe/ixgbe_ethdev.c +++ b/drivers/net/ixgbe/ixgbe_ethdev.c @@ -230,7 +230,7 @@ static int ixgbe_dev_rss_reta_query(struct rte_eth_dev *dev, static void ixgbe_dev_interrupt_handler(void *param); static void ixgbe_dev_interrupt_delayed_handler(void *param); static void *ixgbe_dev_setup_link_thread_handler(void *param); -static void ixgbe_dev_cancel_link_thread(struct rte_eth_dev *dev); +static int ixgbe_dev_wait_setup_link_complete(struct rte_eth_dev *dev, uint32_t timeout_ms); static int ixgbe_add_rar(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr, @@ -2601,7 +2601,7 @@ static int eth_ixgbevf_pci_remove(struct rte_pci_device *pci_dev) PMD_INIT_FUNC_TRACE(); /* Stop the link setup handler before resetting the HW. */ - ixgbe_dev_cancel_link_thread(dev); + ixgbe_dev_wait_setup_link_complete(dev, 0); /* disable uio/vfio intr/eventfd mapping */ rte_intr_disable(intr_handle); @@ -2888,7 +2888,7 @@ static int eth_ixgbevf_pci_remove(struct rte_pci_device *pci_dev) PMD_INIT_FUNC_TRACE(); - ixgbe_dev_cancel_link_thread(dev); + ixgbe_dev_wait_setup_link_complete(dev, 0); /* disable interrupts */ ixgbe_disable_intr(hw); @@ -4143,36 +4143,32 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev, return ret_val; } -/* return 1: setup complete, return 0: setup not complete, and wait timeout*/ +/* + * If @timeout_ms was 0, it means that it will not return until link complete. + * It returns 1 on complete, return 0 on timeout. + */ static int -ixgbe_dev_wait_setup_link_complete(struct rte_eth_dev *dev) +ixgbe_dev_wait_setup_link_complete(struct rte_eth_dev *dev, uint32_t timeout_ms) { -#define DELAY_INTERVAL 100 /* 100ms */ -#define MAX_TIMEOUT 90 /* 9s (90 * 100ms) in total */ +#define WARNING_TIMEOUT 9000 /* 9s in total */ struct ixgbe_adapter *ad = dev->data->dev_private; - int timeout = MAX_TIMEOUT; + int timeout = timeout_ms ? WARNING_TIMEOUT : timeout_ms; - while (rte_atomic32_read(&ad->link_thread_running) && timeout) { - msec_delay(DELAY_INTERVAL); + while (rte_atomic32_read(&ad->link_thread_running)) { + msec_delay(1); timeout--; - } - - - return !!timeout; -} -static void -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!"); + if (timeout_ms) { + if (!timeout) + return 0; + } else if (!timeout) { + /* It will not return until link complete */ + timeout = WARNING_TIMEOUT; + PMD_DRV_LOG(ERR, "IXGBE link thread not complete too long time!"); + } } + + return 1; } static void * @@ -4186,6 +4182,7 @@ 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); @@ -4282,8 +4279,8 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev, if (link_up == 0) { if (ixgbe_get_media_type(hw) == ixgbe_media_type_fiber) { intr->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; - if (ixgbe_dev_wait_setup_link_complete(dev) && - rte_atomic32_test_and_set(&ad->link_thread_running)) { + ixgbe_dev_wait_setup_link_complete(dev, 0); + if (rte_atomic32_test_and_set(&ad->link_thread_running)) { if (rte_ctrl_thread_create(&ad->link_thread_tid, "ixgbe-link-handler", NULL, @@ -5323,7 +5320,7 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev, PMD_INIT_FUNC_TRACE(); /* Stop the link setup handler before resetting the HW. */ - ixgbe_dev_cancel_link_thread(dev); + ixgbe_dev_wait_setup_link_complete(dev, 0); err = hw->mac.ops.reset_hw(hw); if (err) { @@ -5421,7 +5418,7 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev, PMD_INIT_FUNC_TRACE(); - ixgbe_dev_cancel_link_thread(dev); + ixgbe_dev_wait_setup_link_complete(dev, 0); ixgbevf_intr_disable(dev); -- 1.8.3.1