netdev - Re: [PATCH mlx5-next] RDMA/mlx5: Don't use cached IRQ affinity mask

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Message-ID: <d8f375d7-8a1f-39f5-5fd6-0bdc781f1465@grimberg.me>
Date:   Mon, 16 Jul 2018 17:59:05 +0300
From:   Sagi Grimberg <sagi@...mberg.me>
To:     Max Gurtovoy <maxg@...lanox.com>, Leon Romanovsky <leon@...nel.org>
Cc:     Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        RDMA mailing list <linux-rdma@...r.kernel.org>,
        Saeed Mahameed <saeedm@...lanox.com>,
        Steve Wise <swise@...ngridcomputing.com>,
        linux-netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH mlx5-next] RDMA/mlx5: Don't use cached IRQ affinity mask


> Hi,
> I've tested this patch and seems problematic at this moment.

Problematic how? what are you seeing?

> maybe this is because of the bug that Steve mentioned in the NVMe 
> mailing list. Sagi mentioned that we should fix it in the NVMe/RDMA 
> initiator and I'll run his suggestion as well.

Is your device irq affinity linear?

> BTW, when I run the blk_mq_map_queues it works for every irq affinity.

But its probably not aligned to the device vector affinity.