From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roland Dreier Subject: Re: ibv_post_send/recv kernel path optimizations Date: Wed, 08 Dec 2010 11:04:52 -0800 Message-ID: References: <20101007161649.GD21206@obsidianresearch.com> <20101007165947.GD11681@bicker> <20101009231607.GA24649@obsidianresearch.com> <20101012113117.GB6742@bicker> <20101012210118.GR24268@obsidianresearch.com> <20101013091312.GB6060@bicker> <20101123071025.GI1522@bicker> <20101124221845.GH2369@obsidianresearch.com> <20101125041337.GA11049@obsidianresearch.com> <4CEE7A22.2040706@voltaire.com> <4CF60343.7050602@voltaire.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: In-Reply-To: (Miroslaw Walukiewicz's message of "Wed, 8 Dec 2010 12:14:51 +0000") Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "Walukiewicz, Miroslaw" Cc: Or Gerlitz , Jason Gunthorpe , Roland Dreier , "Hefty, Sean" , "linux-rdma@vger.kernel.org" List-Id: linux-rdma@vger.kernel.org > The problem that I see is that the mmap is currently used for mapping > of doorbell page in different drivers. The driver can use different offsets into the file to map different things. For example I believe ehca, ipath and qib already do this. > I cannot find a specific code for /dev/infiniband/uverbsX. Is this > device driver sharing the same functions like /dev/infiniband/rdmacm > or it has own implementation. it is in drivers/infiniband/core/uverbs_main.c. - R. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html