From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
To: dev@dpdk.org
Cc: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Subject: [dpdk-dev] [PATCH 4/5] net/ixgbevf: add check for rte_intr_enable.
Date: Fri, 5 Jan 2018 05:57:55 -0800 [thread overview]
Message-ID: <1515160676-4296-4-git-send-email-xiangxia.m.yue@gmail.com> (raw)
In-Reply-To: <1515160676-4296-1-git-send-email-xiangxia.m.yue@gmail.com>
When we bind the ixgbevf to vfio and call the rte_eth_dev_rx_intr_enable
and rte_eth_dev_rx_intr_disable frequently, the interrupt setting
(msi_set_mask_bit) will take more CPU as show below. rte_intr_enable
call the ioctl to map the fd to interrupts frequently.
perf top:
5.45% [kernel] [k] msi_set_mask_bit
It is unnecessary to call the rte_intr_enable in ixgbe_dev_rx_queue_intr_enable.
because the fds has been mapped to interrupt and not unmapped in
ixgbe_dev_rx_queue_intr_disable.
This patch add checks for using VFIO. With the patch, msi_set_mask_bit is
not listed in perl any more. Any suggestion will be welcome.
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
---
drivers/net/ixgbe/ixgbe_ethdev.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index e929235..79e4097 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -5610,7 +5610,9 @@ static void ixgbevf_set_vfta_all(struct rte_eth_dev *dev, bool on)
RTE_SET_USED(queue_id);
IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, intr->mask);
- rte_intr_enable(intr_handle);
+ if (intr_handle->type == RTE_INTR_HANDLE_UIO ||
+ intr_handle->type == RTE_INTR_HANDLE_UIO_INTX)
+ rte_intr_enable(intr_handle);
return 0;
}
@@ -5659,7 +5661,10 @@ static void ixgbevf_set_vfta_all(struct rte_eth_dev *dev, bool on)
mask &= (1 << (queue_id - 32));
IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask);
}
- rte_intr_enable(intr_handle);
+
+ if (intr_handle->type == RTE_INTR_HANDLE_UIO ||
+ intr_handle->type == RTE_INTR_HANDLE_UIO_INTX)
+ rte_intr_enable(intr_handle);
return 0;
}
--
1.8.3.1
next prev parent reply other threads:[~2018-01-05 13:58 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-05 13:57 [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed Tonghao Zhang
2018-01-05 13:57 ` [dpdk-dev] [PATCH 3/5] net/ixgbevf: save IXGBE_VTEIMS to intr->mask for performance Tonghao Zhang
2018-01-05 13:57 ` Tonghao Zhang [this message]
2018-01-05 13:57 ` [dpdk-dev] [PATCH 5/5] vhost: add reconnect thread name for client mode Tonghao Zhang
2018-01-05 14:10 [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed Tonghao Zhang
2018-01-05 14:10 ` [dpdk-dev] [PATCH 4/5] net/ixgbevf: add check for rte_intr_enable Tonghao Zhang
2018-01-11 7:06 ` Xing, Beilei
2018-01-11 15:35 ` Tonghao Zhang
2018-01-12 12:10 ` Dai, Wei
2018-01-14 6:51 ` Tonghao Zhang
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