[PATCH V4 net-next 02/13] net/ena: fix queues number calculation
From: Netanel Belgazal <hidden>
Date: 2017-02-09 13:29:01
Also in:
lkml
Subsystem:
amazon ethernet drivers, networking drivers, the rest · Maintainers:
Arthur Kiyanovski, David Arinzon, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The ENA driver tries to open a queue per vCPU. To determine how many vCPUs the instance have it uses num_possible_cpus() while it should have use num_online_cpus() instead. Signed-off-by: Netanel Belgazal <redacted> --- drivers/net/ethernet/amazon/ena/ena_netdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index d8cd9ca..effe686 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c@@ -2658,7 +2658,7 @@ static int ena_calc_io_queue_num(struct pci_dev *pdev, io_sq_num = get_feat_ctx->max_queues.max_sq_num; } - io_queue_num = min_t(int, num_possible_cpus(), ENA_MAX_NUM_IO_QUEUES); + io_queue_num = min_t(int, num_online_cpus(), ENA_MAX_NUM_IO_QUEUES); io_queue_num = min_t(int, io_queue_num, io_sq_num); io_queue_num = min_t(int, io_queue_num, get_feat_ctx->max_queues.max_cq_num);
--
2.7.4