netdev - Re: [PATCH v6 rdma-next 1/6] RDMA/core: Create mmap database and cookie helper functions

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Message-ID: <20190729141142.GD17990@ziepe.ca>
Date:   Mon, 29 Jul 2019 11:11:42 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Kamal Heib <kamalheib1@...il.com>
Cc:     Michal Kalderon <michal.kalderon@...vell.com>,
        ariel.elior@...vell.com, dledford@...hat.com, galpress@...zon.com,
        linux-rdma@...r.kernel.org, davem@...emloft.net,
        netdev@...r.kernel.org
Subject: Re: [PATCH v6 rdma-next 1/6] RDMA/core: Create mmap database and
 cookie helper functions

On Sun, Jul 28, 2019 at 12:30:51PM +0300, Kamal Heib wrote:
> > Maybe put this in ib_core_uverbs.c ?
> > 
> > Kamal, you've been tackling various cleanups, maybe making ib_uverbs
> > unloadable again is something you'd be keen on?
> >
> 
> Yes, Could you please give some background on that?

Most of it is my fault from being too careless, but the general notion
is that all of these

$ grep EXPORT_SYMBOL uverbs_main.c uverbs_cmd.c  uverbs_marshall.c  rdma_core.c uverbs_std_types*.c uverbs_uapi.c 
uverbs_main.c:EXPORT_SYMBOL(ib_uverbs_get_ucontext_file);
uverbs_main.c:EXPORT_SYMBOL(rdma_user_mmap_io);
uverbs_cmd.c:EXPORT_SYMBOL(flow_resources_alloc);
uverbs_cmd.c:EXPORT_SYMBOL(ib_uverbs_flow_resources_free);
uverbs_cmd.c:EXPORT_SYMBOL(flow_resources_add);
uverbs_marshall.c:EXPORT_SYMBOL(ib_copy_ah_attr_to_user);
uverbs_marshall.c:EXPORT_SYMBOL(ib_copy_qp_attr_to_user);
uverbs_marshall.c:EXPORT_SYMBOL(ib_copy_path_rec_to_user);
uverbs_marshall.c:EXPORT_SYMBOL(ib_copy_path_rec_from_user);
rdma_core.c:EXPORT_SYMBOL(uverbs_idr_class);
rdma_core.c:EXPORT_SYMBOL(uverbs_close_fd);
rdma_core.c:EXPORT_SYMBOL(uverbs_fd_class);
uverbs_std_types.c:EXPORT_SYMBOL(uverbs_destroy_def_handler);

Need to go into some 'ib_core uverbs support' .c file in the ib_core,
be moved to a header inline, or moved otherwise

Maybe it is now unrealistic that the uapi is so complicated, ie
uverbs_close_fd is just not easy to fixup..

Maybe the only ones that need fixing are ib_uverbs_get_ucontext_file
rdma_user_mmap_io as alot of drivers are entangled on those now.

The other stuff is much harder..

Jason