From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH 39 of 39] IB/ipath - use streaming copy in RDMA interrupt handler to reduce packet loss Date: Thu, 29 Jun 2006 14:50:27 -0700 (PDT) Message-ID: <20060629.145027.41636491.davem@davemloft.net> References: <1b00209ef20a0e7893d8.1151617290@eng-12.pathscale.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: akpm@osdl.org, rdreier@cisco.com, mst@mellanox.co.il, openib-general@openib.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Return-path: To: bos@pathscale.com In-Reply-To: <1b00209ef20a0e7893d8.1151617290@eng-12.pathscale.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Bryan O'Sullivan Date: Thu, 29 Jun 2006 14:41:30 -0700 > +/* > + * Copy data. Try not to pollute the dcache with the source data, > + * because we won't be reading it again. > + */ > +#if defined(CONFIG_X86_64) > +void *ipath_memcpy_nc(void *dest, const void *src, size_t n); > +#else > +#define ipath_memcpy_nc(dest, src, n) memcpy(dest, src, n) > +#endif A facility like this doesn't belong in some arbitrary driver layer. It belongs as a generic facility the whole kernel could make use of. Please stop polluting the infiniband drivers with Opteron crap.