diff options
| author | PJ Waskiewicz <peter.p.waskiewicz.jr@intel.com> | 2009-11-12 23:50:43 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-11-13 20:46:55 -0800 |
| commit | 342bde1b70c79bfc8509b017b3987f3c7541ff8e (patch) | |
| tree | c3a9e2f2b15d864a360667c6f00a0dd2fe8e0c01 /drivers/net/ixgbe/ixgbe_main.c | |
| parent | 8a0717f30ce93a686d325122d8b0c6b73b32cfb3 (diff) | |
| download | lwn-342bde1b70c79bfc8509b017b3987f3c7541ff8e.tar.gz lwn-342bde1b70c79bfc8509b017b3987f3c7541ff8e.zip | |
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>
Diffstat (limited to 'drivers/net/ixgbe/ixgbe_main.c')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_main.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index 04892863ef02..884152d1085e 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -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 |