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From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Cc: Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	"Amrani,
	Ram" <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>,
	Lijun Ou <oulijun-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>,
	aditr-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org,
	Knut Omang <knut.omang-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>,
	Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	linux-rdma <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: New providers in rdma-core
Date: Wed, 19 Oct 2016 11:13:26 -0600	[thread overview]
Message-ID: <20161019171326.GA29879@obsidianresearch.com> (raw)
In-Reply-To: <20161019163913.GA30843-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>

On Wed, Oct 19, 2016 at 09:39:13AM -0700, Christoph Hellwig wrote:

> Requiring installed super updtodate kernel headers isn't going to
> help development.  It would be good to keep a copy of the kernel
> headers in the rdma-core repo, similar to what most kernel tools
> tied to bleeding edge ABIs do.

Yes, this is already happening, eg rdma/rdma_user_rxe.h is cached in
the tree, and I have a patch to move the rdma_netlink.h to that scheme
as well.

cmake has a scheme where it detects if the system header is too
old/missing and if so transparently arranges things so that

 #include <rdma/rdma_user_rxe.h>

Uses the internal copy.

I also want to add a cmake option to use the kernel headers from a
kernel tree - nobody has been testing that changes to the kernel
headers work with the user space either, and eg the changes the
netlink broke stuff :/

Jason
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  parent reply	other threads:[~2016-10-19 17:13 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-19 16:18 New providers in rdma-core Leon Romanovsky
     [not found] ` <CALq1K=+nEP0jFOCxj30HA0+bg0L1bF5+xiBcAC2bRwUz+M6+eQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-19 16:39   ` Christoph Hellwig
     [not found]     ` <20161019163913.GA30843-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2016-10-19 17:13       ` Jason Gunthorpe [this message]
2016-10-19 17:28       ` Adit Ranadive
     [not found]         ` <6b57d79c-dbd3-cd9b-061e-27a3d3968845-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
2016-10-19 17:59           ` Jason Gunthorpe
     [not found]             ` <20161019175926.GD29879-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-10-19 19:51               ` Adit Ranadive
     [not found]                 ` <12243e3b-87cf-2bd4-d097-1dd0a7907f41-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
2016-10-19 20:09                   ` Jason Gunthorpe
     [not found]                     ` <20161019200911.GA2666-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-10-20  9:24                       ` Amrani, Ram
     [not found]                         ` <SN1PR07MB2207D6CF5ADA67FCFCAA3A2EF8D50-mikhvbZlbf8TSoR2DauN2+FPX92sqiQdvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2016-10-20 16:35                           ` Jason Gunthorpe
2016-10-25  5:42   ` oulijun
     [not found]     ` <580EF0D4.9050209-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2016-10-25  6:08       ` Leon Romanovsky

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