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ixgbe: Make queue pairs on single MSI-X interrupts 

This patch pairs similar-numbered Rx and Tx queues onto a single
MSI-X vector.  For example, Tx queue 0 and Rx queue 0's interrupt
with be ethX-RxTx-0.  This allows for more efficient cleanup, since
fewer interrupts will be firing during device operation.  It also
helps with a cleaner CPU affinity for IRQ affinity.

Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
PJ Waskiewicz 2009-11-12 23:50:43 +00:00 committed by David S. Miller
parent 8a0717f30c
commit 342bde1b70
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ixgbe/ixgbe_main.c
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@ -3626,10 +3626,10 @@ static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter)
* It's easy to be greedy for MSI-X vectors, but it really
* doesn't do us much good if we have a lot more vectors
* than CPU's. So let's be conservative and only ask for
* (roughly) twice the number of vectors as there are CPU's.
* (roughly) the same number of vectors as there are CPU's.
*/
v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
(int)(num_online_cpus() * 2)) + NON_Q_VECTORS;
(int)num_online_cpus()) + NON_Q_VECTORS;
/*
* At the same time, hardware can only support a maximum of