diff options
| -rw-r--r-- | sys/dev/e1000/if_igb.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/sys/dev/e1000/if_igb.c b/sys/dev/e1000/if_igb.c index b15c38e..68997f9f 100644 --- a/sys/dev/e1000/if_igb.c +++ b/sys/dev/e1000/if_igb.c @@ -364,6 +364,13 @@ TUNABLE_INT("hw.igb.num_queues", &igb_num_queues); SYSCTL_INT(_hw_igb, OID_AUTO, num_queues, CTLFLAG_RDTUN, &igb_num_queues, 0, "Number of queues to configure, 0 indicates autoconfigure"); +/* +** Global variable to store last used CPU when binding queues +** to CPUs in igb_allocate_msix. Starts at CPU_FIRST and increments when a +** queue is bound to a cpu. +*/ +static int igb_last_bind_cpu = -1; + /* How many packets rxeof tries to clean at a time */ static int igb_rx_process_limit = 100; TUNABLE_INT("hw.igb.rx_process_limit", &igb_rx_process_limit); @@ -2493,8 +2500,16 @@ igb_allocate_msix(struct adapter *adapter) ** Bind the msix vector, and thus the ** rings to the corresponding cpu. */ - if (adapter->num_queues > 1) - bus_bind_intr(dev, que->res, i); + if (adapter->num_queues > 1) { + if (igb_last_bind_cpu < 0) + igb_last_bind_cpu = CPU_FIRST(); + bus_bind_intr(dev, que->res, igb_last_bind_cpu); + device_printf(dev, + "Bound queue %d to cpu %d\n", + i,igb_last_bind_cpu); + igb_last_bind_cpu = CPU_NEXT(igb_last_bind_cpu); + igb_last_bind_cpu = igb_last_bind_cpu % mp_ncpus; + } #if __FreeBSD_version >= 800000 TASK_INIT(&que->txr->txq_task, 0, igb_deferred_mq_start, que->txr); |
