From: Tonghao Zhang <xiangxia.m....@gmail.com>
When binding the ixgbe pf or vf to vfio and call the
rte_eth_dev_rx_intr_enable frequently, the interrupt setting
(msi_set_mask_bit) will take more CPU as show below. rte_intr_enable
calls 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.
With the patch, msi_set_mask_bit is not listed in perl anymore.
Signed-off-by: Tonghao Zhang <xiangxia.m....@gmail.com>
---
drivers/net/ixgbe/ixgbe_ethdev.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index cab243d..d081247 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -5639,8 +5639,6 @@ 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);
-
return 0;
}
@@ -5688,7 +5686,6 @@ 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);
return 0;
}
--
1.8.3.1
