From: Christoph Hellwig <hch@lst.de>
To: Max Gurtovoy <maxg@mellanox.com>
Cc: Sagi Grimberg <sagi@grimberg.me>,
linux-rdma@vger.kernel.org, linux-nvme@lists.infradead.org,
linux-block@vger.kernel.org, netdev@vger.kernel.org,
Saeed Mahameed <saeedm@mellanox.com>,
Or Gerlitz <ogerlitz@mellanox.com>,
Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH rfc 5/6] block: Add rdma affinity based queue mapping helper
Date: Tue, 4 Apr 2017 15:09:26 +0200 [thread overview]
Message-ID: <20170404130926.GA16338@lst.de> (raw)
In-Reply-To: <becb84ac-7819-a207-56b1-70f16cb80e42@mellanox.com>
On Tue, Apr 04, 2017 at 10:46:54AM +0300, Max Gurtovoy wrote:
>> + if (set->nr_hw_queues > dev->num_comp_vectors)
>> + goto fallback;
>> +
>> + for (queue = 0; queue < set->nr_hw_queues; queue++) {
>> + mask = ib_get_vector_affinity(dev, first_vec + queue);
>> + if (!mask)
>> + goto fallback;
>
> Christoph,
> we can use fallback also in the blk-mq-pci.c in case pci_irq_get_affinity
> fails, right ?
For PCI it shouldn't fail as the driver calling pci_irq_get_affinity
knows how it set up the interrupts. So I don't think it's necessary there.
next prev parent reply other threads:[~2017-04-04 13:09 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-02 13:41 [PATCH rfc 0/6] Automatic affinity settings for nvme over rdma Sagi Grimberg
2017-04-02 13:41 ` [PATCH rfc 1/6] mlx5: convert to generic pci_alloc_irq_vectors Sagi Grimberg
2017-04-04 6:27 ` Christoph Hellwig
2017-04-02 13:41 ` [PATCH rfc 2/6] mlx5: move affinity hints assignments to generic code Sagi Grimberg
2017-04-04 6:32 ` Christoph Hellwig
2017-04-06 8:29 ` Sagi Grimberg
2017-04-02 13:41 ` [PATCH rfc 3/6] RDMA/core: expose affinity mappings per completion vector Sagi Grimberg
2017-04-04 6:32 ` Christoph Hellwig
2017-04-02 13:41 ` [PATCH rfc 4/6] mlx5: support ->get_vector_affinity Sagi Grimberg
2017-04-04 6:33 ` Christoph Hellwig
2017-04-02 13:41 ` [PATCH rfc 5/6] block: Add rdma affinity based queue mapping helper Sagi Grimberg
2017-04-04 6:33 ` Christoph Hellwig
2017-04-04 7:46 ` Max Gurtovoy
2017-04-04 13:09 ` Christoph Hellwig [this message]
2017-04-06 9:23 ` Sagi Grimberg
2017-04-05 14:17 ` Jens Axboe
2017-04-02 13:41 ` [PATCH rfc 6/6] nvme-rdma: use intelligent affinity based queue mappings Sagi Grimberg
2017-04-04 6:34 ` Christoph Hellwig
2017-04-06 8:30 ` Sagi Grimberg
2017-04-04 7:51 ` [PATCH rfc 0/6] Automatic affinity settings for nvme over rdma Max Gurtovoy
2017-04-06 8:34 ` Sagi Grimberg
2017-04-10 18:05 ` Steve Wise
2017-04-12 6:34 ` Christoph Hellwig
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