From: Chaitanya Kulkarni <ckulkarnilinux@gmail.com>
To: Leon Romanovsky <leon@kernel.org>, Max Gurtovoy <mgurtovoy@nvidia.com>
Cc: hch@infradead.org, mst@redhat.com,
virtualization@lists.linux-foundation.org, kvm@vger.kernel.org,
stefanha@redhat.com, israelr@nvidia.com, nitzanc@nvidia.com,
oren@nvidia.com, linux-block@vger.kernel.org, axboe@kernel.dk
Subject: Re: [PATCH v3 1/1] virtio-blk: add num_request_queues module parameter
Date: Sun, 5 Sep 2021 01:49:46 -0700 [thread overview]
Message-ID: <b2e60035-2e63-3162-6222-d8c862526a28@gmail.com> (raw)
In-Reply-To: <YTR12AHOGs1nhfz1@unreal>
On 9/5/2021 12:46 AM, Leon Romanovsky wrote:
>> +static unsigned int num_request_queues;
>> +module_param_cb(num_request_queues, &queue_count_ops, &num_request_queues,
>> + 0644);
>> +MODULE_PARM_DESC(num_request_queues,
>> + "Number of request queues to use for blk device. Should > 0");
>> +
> Won't it limit all virtio block devices to the same limit?
>
> It is very common to see multiple virtio-blk devices on the same system
> and they probably need different limits.
>
> Thanks
Without looking into the code, that can be done adding a configfs
interface and overriding a global value (module param) when it is set from
configfs.
next prev parent reply other threads:[~2021-09-05 8:49 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-02 20:46 [PATCH v3 1/1] virtio-blk: add num_request_queues module parameter Max Gurtovoy
2021-09-03 6:06 ` Pankaj Gupta
2021-09-05 7:46 ` Leon Romanovsky
2021-09-05 8:49 ` Chaitanya Kulkarni [this message]
2021-09-05 9:19 ` Max Gurtovoy
2021-09-05 10:19 ` Leon Romanovsky
2021-09-05 11:16 ` Max Gurtovoy
2021-09-05 13:10 ` Leon Romanovsky
2021-09-05 13:16 ` Max Gurtovoy
2021-09-05 10:20 ` Leon Romanovsky
2021-09-05 15:15 ` Michael S. Tsirkin
2021-09-07 23:04 ` Leon Romanovsky
2021-10-22 9:30 ` Michael S. Tsirkin
2021-10-24 7:19 ` Max Gurtovoy
2021-10-24 8:12 ` Max Gurtovoy
2021-10-24 8:48 ` Michael S. Tsirkin
2021-10-24 10:57 ` Max Gurtovoy
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