From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Su Subject: [PATCH] igb_uio: use non-threaded ISR Date: Fri, 20 Jan 2017 15:08:19 -0800 Message-ID: <1484953699-3156-1-git-send-email-david.w.su@intel.com> Cc: David Su To: dev@dpdk.org Return-path: Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by dpdk.org (Postfix) with ESMTP id 52C26DE3 for ; Sat, 21 Jan 2017 00:08:29 +0100 (CET) List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This eliminates the overhead of a task switch when an interrupt arrives. Signed-off-by: David Su --- lib/librte_eal/linuxapp/igb_uio/igb_uio.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c index df41e45..9338e14 100644 --- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c +++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c @@ -382,6 +382,7 @@ igbuio_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) msix_entry.entry = 0; if (pci_enable_msix(dev, &msix_entry, 1) == 0) { dev_dbg(&dev->dev, "using MSI-X"); + udev->info.irq_flags = IRQF_NO_THREAD; udev->info.irq = msix_entry.vector; udev->mode = RTE_INTR_MODE_MSIX; break; @@ -390,7 +391,7 @@ igbuio_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) case RTE_INTR_MODE_LEGACY: if (pci_intx_mask_supported(dev)) { dev_dbg(&dev->dev, "using INTX"); - udev->info.irq_flags = IRQF_SHARED; + udev->info.irq_flags = IRQF_SHARED | IRQF_NO_THREAD; udev->info.irq = dev->irq; udev->mode = RTE_INTR_MODE_LEGACY; break; -- 1.7.0.4