From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id A3626A0350 for ; Tue, 1 Mar 2022 09:50:39 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 9686C41229; Tue, 1 Mar 2022 09:50:39 +0100 (CET) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by mails.dpdk.org (Postfix) with ESMTP id 40AE1407FF; Tue, 1 Mar 2022 09:50:36 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1646124636; x=1677660636; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=Pra9DvfyTK+m2t0HDQFxVcLN/4GCcT+wxNpKjbuEK7g=; b=mDShBCxpwwe5JIc9e3BsWzzF5nF2TpujHGh5IcB3wwHXpXrltaFi2sND hsfAHOKM8qZCQF7dJyUcbYHTfidzpqpDY2wq0Ye6DkFLLArAK/LX18cZT Ofu98A18HPV14665HVF/0Y6gN4ihyKUlRb6O91GHgq8cl43rb/tWOB73L yerCO9gStc2aDXzBr3fNzX/Uyqni2hs9JlEBA/xLJQCp+ZaKQuZyWdHQu I5IskiqAwC2IdmBlti9zhPzU8f6oYN6qWa72phRvEiHfOuxYY6/zeFXyf DbirMRJMAt9ZS/K49sfNyqQeX97ESKPW1x3V8A5MotyHmCvtLxozROvhl A==; X-IronPort-AV: E=McAfee;i="6200,9189,10272"; a="240502858" X-IronPort-AV: E=Sophos;i="5.90,145,1643702400"; d="scan'208";a="240502858" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Mar 2022 00:50:18 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,145,1643702400"; d="scan'208";a="708980149" Received: from unknown (HELO localhost.localdomain.sh.intel.com) ([10.238.175.107]) by orsmga005.jf.intel.com with ESMTP; 01 Mar 2022 00:50:15 -0800 From: Wei Huang To: dev@dpdk.org, rosen.xu@intel.com, qi.z.zhang@intel.com, nipun.gupta@nxp.com, hemant.agrawal@nxp.com Cc: stable@dpdk.org, tianfei.zhang@intel.com, ferruh.yigit@intel.com, Wei Huang Subject: [PATCH v1] raw/ifpga: fix monitor thread issues Date: Tue, 1 Mar 2022 03:47:03 -0500 Message-Id: <20220301084703.820509-1-wei.huang@intel.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Monitor thread handles graceful shutdown according to the value of specific sensors in device, two issues are found below. 1. Thread is not created when card is probed. 2. Thread is canceled without checking presence of other cards. To fix them, thread is created in pci device probe function, a reference count is checked before canceling the thread. Fixes: 9c006c45 ("raw/ifpga: scan PCIe BDF device tree") Cc: stable@dpdk.org Signed-off-by: Wei Huang Acked-by: Tianfei Zhang --- drivers/raw/ifpga/ifpga_rawdev.c | 62 ++++++++++++++++++++++++++-------------- drivers/raw/ifpga/ifpga_rawdev.h | 2 ++ 2 files changed, 43 insertions(+), 21 deletions(-) diff --git a/drivers/raw/ifpga/ifpga_rawdev.c b/drivers/raw/ifpga/ifpga_rawdev.c index f341f4a..d36cf61 100644 --- a/drivers/raw/ifpga/ifpga_rawdev.c +++ b/drivers/raw/ifpga/ifpga_rawdev.c @@ -68,7 +68,7 @@ static struct ifpga_rawdev ifpga_rawdevices[IFPGA_RAWDEV_NUM]; -static int ifpga_monitor_start; +static int ifpga_monitor_refcnt; static pthread_t ifpga_monitor_start_thread; static struct ifpga_rawdev * @@ -133,6 +133,7 @@ struct ifpga_rawdev * dev->dev_id = dev_id; for (i = 0; i < IFPGA_MAX_IRQ; i++) dev->intr_handle[i] = NULL; + dev->poll_enabled = 0; return dev; } @@ -207,10 +208,11 @@ static int ifpga_get_dev_vendor_id(const char *bdf, return 0; } -static int ifpga_rawdev_fill_info(struct ifpga_rawdev *ifpga_dev, - const char *bdf) + +static int ifpga_rawdev_fill_info(struct ifpga_rawdev *ifpga_dev) { - char path[1024] = "/sys/bus/pci/devices/0000:"; + struct opae_adapter *adapter = NULL; + char path[1024] = "/sys/bus/pci/devices/"; char link[1024], link1[1024]; char dir[1024] = "/sys/devices/"; char *c; @@ -225,7 +227,11 @@ static int ifpga_rawdev_fill_info(struct ifpga_rawdev *ifpga_dev, int func; uint32_t dev_id, vendor_id; - strlcat(path, bdf, sizeof(path)); + adapter = ifpga_dev ? ifpga_rawdev_get_priv(ifpga_dev->rawdev) : NULL; + if (!adapter) + return -ENODEV; + + strlcat(path, adapter->name, sizeof(path)); memset(link, 0, sizeof(link)); memset(link1, 0, sizeof(link1)); ret = readlink(path, link, (sizeof(link)-1)); @@ -375,7 +381,7 @@ static int ifpga_rawdev_fill_info(struct ifpga_rawdev *ifpga_dev, /* monitor temperature sensors */ if (!strcmp(sensor->name, "Board Temperature") || !strcmp(sensor->name, "FPGA Die Temperature")) { - IFPGA_RAWDEV_PMD_INFO("read sensor %s %d %d %d\n", + IFPGA_RAWDEV_PMD_DEBUG("read sensor %s %d %d %d\n", sensor->name, value, sensor->high_warn, sensor->high_fatal); @@ -417,7 +423,7 @@ static int set_surprise_link_check_aer( bool enable = 0; uint32_t aer_new0, aer_new1; - if (!ifpga_rdev) { + if (!ifpga_rdev || !ifpga_rdev->rawdev) { printf("\n device does not exist\n"); return -EFAULT; } @@ -496,11 +502,11 @@ static int set_surprise_link_check_aer( int gsd_enable, ret; #define MS 1000 - while (__atomic_load_n(&ifpga_monitor_start, __ATOMIC_RELAXED)) { + while (__atomic_load_n(&ifpga_monitor_refcnt, __ATOMIC_RELAXED)) { gsd_enable = 0; for (i = 0; i < IFPGA_RAWDEV_NUM; i++) { ifpga_rdev = &ifpga_rawdevices[i]; - if (ifpga_rdev->rawdev) { + if (ifpga_rdev->poll_enabled) { ret = set_surprise_link_check_aer(ifpga_rdev, gsd_enable); if (ret == 1 && !gsd_enable) { @@ -520,32 +526,46 @@ static int set_surprise_link_check_aer( } static int -ifpga_monitor_start_func(void) +ifpga_monitor_start_func(struct ifpga_rawdev *dev) { int ret; - if (!__atomic_load_n(&ifpga_monitor_start, __ATOMIC_RELAXED)) { + if (!dev) + return -ENODEV; + + ret = ifpga_rawdev_fill_info(dev); + if (ret) + return ret; + + dev->poll_enabled = 1; + + if (!__atomic_fetch_add(&ifpga_monitor_refcnt, 1, __ATOMIC_RELAXED)) { ret = rte_ctrl_thread_create(&ifpga_monitor_start_thread, "ifpga-monitor", NULL, ifpga_rawdev_gsd_handle, NULL); if (ret != 0) { + ifpga_monitor_start_thread = 0; IFPGA_RAWDEV_PMD_ERR( "Fail to create ifpga monitor thread"); return -1; } - __atomic_store_n(&ifpga_monitor_start, 1, __ATOMIC_RELAXED); } return 0; } + static int -ifpga_monitor_stop_func(void) +ifpga_monitor_stop_func(struct ifpga_rawdev *dev) { int ret; - if (__atomic_load_n(&ifpga_monitor_start, __ATOMIC_RELAXED)) { - __atomic_store_n(&ifpga_monitor_start, 0, __ATOMIC_RELAXED); + if (!dev || !dev->poll_enabled) + return 0; + + dev->poll_enabled = 0; + if (!__atomic_sub_fetch(&ifpga_monitor_refcnt, 1, __ATOMIC_RELAXED) && + ifpga_monitor_start_thread) { ret = pthread_cancel(ifpga_monitor_start_thread); if (ret) IFPGA_RAWDEV_PMD_ERR("Can't cancel the thread"); @@ -718,6 +738,7 @@ static int set_surprise_link_check_aer( struct opae_adapter *adapter; if (dev) { + ifpga_monitor_stop_func(ifpga_rawdev_get(dev)); adapter = ifpga_rawdev_get_priv(dev); if (adapter) { opae_adapter_destroy(adapter); @@ -1572,6 +1593,10 @@ static int fme_clean_fme_error(struct opae_manager *mgr) if (ret) goto free_adapter_data; + ret = ifpga_monitor_start_func(dev); + if (ret) + goto free_adapter_data; + return ret; free_adapter_data: @@ -1647,7 +1672,7 @@ static int fme_clean_fme_error(struct opae_manager *mgr) static int ifpga_rawdev_pci_remove(struct rte_pci_device *pci_dev) { - ifpga_monitor_stop_func(); + IFPGA_RAWDEV_PMD_INFO("remove pci_dev %s", pci_dev->device.name); return ifpga_rawdev_destroy(pci_dev); } @@ -1698,7 +1723,6 @@ static int ifpga_rawdev_get_string_arg(const char *key __rte_unused, struct ifpga_rawdev *ifpga_dev; int port; char *name = NULL; - const char *bdf; char dev_name[RTE_RAWDEV_NAME_MAX_LEN]; int ret = -1; @@ -1747,10 +1771,6 @@ static int ifpga_rawdev_get_string_arg(const char *key __rte_unused, ifpga_dev = ifpga_rawdev_get(rawdev); if (!ifpga_dev) goto end; - bdf = name; - ifpga_rawdev_fill_info(ifpga_dev, bdf); - - ifpga_monitor_start_func(); memset(dev_name, 0, sizeof(dev_name)); snprintf(dev_name, RTE_RAWDEV_NAME_MAX_LEN, "%d|%s", diff --git a/drivers/raw/ifpga/ifpga_rawdev.h b/drivers/raw/ifpga/ifpga_rawdev.h index 6e09afe..857b734 100644 --- a/drivers/raw/ifpga/ifpga_rawdev.h +++ b/drivers/raw/ifpga/ifpga_rawdev.h @@ -62,6 +62,8 @@ struct ifpga_rawdev { char parent_bdf[16]; /* 0 for FME interrupt, others are reserved for AFU irq */ void *intr_handle[IFPGA_MAX_IRQ]; + /* enable monitor thread poll device's sensors or not */ + int poll_enabled; }; struct ifpga_rawdev * -- 1.8.3.1