From: Matt Wilson <msw@amzn.com>
To: Netanel Belgazal <netanel@annapurnalabs.com>
Cc: <linux-kernel@vger.kernel.org>, <davem@davemloft.net>,
<netdev@vger.kernel.org>, <dwmw@amazon.com>,
<zorik@annapurnalabs.com>, <alex@annapurnalabs.com>,
<saeed@annapurnalabs.com>, <msw@amazon.com>,
<aliguori@amazon.com>, <nafea@annapurnalabs.com>
Subject: Re: [PATCH V2 net 03/20] net/ena: fix queues number calculation
Date: Sun, 4 Dec 2016 20:11:30 -0800 [thread overview]
Message-ID: <20161205041130.GD4310@u54ee753d2d1854bda401.ant.amazon.com> (raw)
In-Reply-To: <1480857578-5065-4-git-send-email-netanel@annapurnalabs.com>
On Sun, Dec 04, 2016 at 03:19:21PM +0200, Netanel Belgazal wrote:
> 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.
use () when referring to functions: num_possible_cpus(), num_online_cpus().
> Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
Reviewed-by: Matt Wilson <msw@amazon.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 397c9bc..224302c 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);
next prev parent reply other threads:[~2016-12-05 4:12 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-04 13:19 [PATCH V2 net 00/20] Increase ENA driver version to 1.1.2 Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 01/20] net/ena: remove ntuple filter support from device feature list Netanel Belgazal
2016-12-05 4:08 ` Matt Wilson
2016-12-04 13:19 ` [PATCH V2 net 02/20] net/ena: fix error handling when probe fails Netanel Belgazal
2016-12-05 4:09 ` Matt Wilson
2016-12-05 18:23 ` Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 03/20] net/ena: fix queues number calculation Netanel Belgazal
2016-12-05 4:11 ` Matt Wilson [this message]
2016-12-05 18:25 ` Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 04/20] net/ena: fix ethtool RSS flow configuration Netanel Belgazal
2016-12-05 4:18 ` Matt Wilson
2016-12-05 18:26 ` Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 05/20] net/ena: fix RSS default hash configuration Netanel Belgazal
2016-12-05 4:20 ` Matt Wilson
2016-12-05 18:32 ` Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 06/20] net/ena: fix NULL dereference when removing the driver after device reset faild Netanel Belgazal
2016-12-05 4:29 ` Matt Wilson
2016-12-05 18:30 ` Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 07/20] net/ena: refactor ena_get_stats64 to be atomic context safe Netanel Belgazal
2016-12-05 4:24 ` Matt Wilson
2016-12-05 18:29 ` Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 08/20] net/ena: add hardware hints capability to the driver Netanel Belgazal
2016-12-05 4:31 ` Matt Wilson
2016-12-05 18:31 ` Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 09/20] net/ena: fix potential access to freed memory during device reset Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 10/20] net/ena: remove redundant logic in napi callback for busy poll mode Netanel Belgazal
2016-12-05 5:45 ` Eric Dumazet
2016-12-05 18:29 ` Netanel Belgazal
2016-12-05 18:51 ` Eric Dumazet
2016-12-04 13:19 ` [PATCH V2 net 11/20] net/ena: use READ_ONCE to access completion descriptors Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 12/20] net/ena: reduce the severity of ena printouts Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 13/20] net/ena: change driver's default timeouts Netanel Belgazal
2016-12-05 4:35 ` Matt Wilson
2016-12-05 18:28 ` Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 14/20] net/ena: change condition for host attribute configuration Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 15/20] net/ena: change sizeof() argument to be the type pointer Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 16/20] net/ena: use napi_schedule_irqoff when possible Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 17/20] net/ena: add IPv6 extended protocols to ena_admin_flow_hash_proto Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 18/20] net/ena: remove affinity hint from the driver Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 19/20] net/ena: restructure skb allocation Netanel Belgazal
2016-12-04 13:19 ` [PATCH V2 net 20/20] net/ena: increase driver version to 1.1.2 Netanel Belgazal
2016-12-05 2:37 ` [PATCH V2 net 00/20] Increase ENA " David Miller
2016-12-05 3:30 ` Matt Wilson
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