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Date:   Fri, 12 Apr 2019 22:56:45 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Jason Gunthorpe <jgg@...pe.ca>
Cc:     Parav Pandit <parav@...lanox.com>,
        Doug Ledford <dledford@...hat.com>,
        Steve Wise <swise@...ngridcomputing.com>,
        HÃ¥kon Bugge <haakon.bugge@...cle.com>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] RDMA/cma: Make CM response timeout and # CM retries
 configurable

On Fri, Apr 12, 2019 at 04:30:24PM -0300, Jason Gunthorpe wrote:
> On Mon, Mar 04, 2019 at 06:27:26AM +0000, Parav Pandit wrote:
>
> > I think we should use rdma_nl_register(RDMA_NL_RDMA_CM, cma_cb_table) which was removed as part of ID stats removal.
> > Because of below reasons.
> > 1. rdma netlink command auto loads the module
>
> This is probably the best argument to stay away from sysctl for module
> parameters.. It is tricky to make sure the rdma module is loaded
> before sysctl runs in boot, and I don't think sysctl autoloads missing
> modules, or somehow copes with dynamic module loading, does it?

As far as I remember, sysctl won't be available till module is loaded,
so autoload won't work because path doesn't exist.

>
> To that end we should probably have the entire sysctl configurable
> available in netlink
>
> Jason

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