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Message-Id: <1479631547-29354-3-git-send-email-netanel@annapurnalabs.com>
Date: Sun, 20 Nov 2016 10:45:31 +0200
From: Netanel Belgazal <netanel@...apurnalabs.com>
To: linux-kernel@...r.kernel.org, davem@...emloft.net,
netdev@...r.kernel.org
Cc: Netanel Belgazal <netanel@...apurnalabs.com>, dwmw@...zon.com,
zorik@...apurnalabs.com, alex@...apurnalabs.com,
saeed@...apurnalabs.com, msw@...zon.com, aliguori@...zon.com,
nafea@...apurnalabs.com
Subject: [PATCH net 02/18] net/ena: fix queues number calculation
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 <netanel@...apurnalabs.com>
---
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 33a760e..8815217 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -2667,7 +2667,7 @@ 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);
--
1.9.1
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