Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752075AbXJAJXT (ORCPT ); Mon, 1 Oct 2007 05:23:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751062AbXJAJXJ (ORCPT ); Mon, 1 Oct 2007 05:23:09 -0400 Received: from ananke.telenet-ops.be ([195.130.137.78]:59541 "EHLO ananke.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750963AbXJAJXI (ORCPT ); Mon, 1 Oct 2007 05:23:08 -0400 Date: Mon, 1 Oct 2007 11:23:05 +0200 (CEST) From: Geert Uytterhoeven To: veerasena reddy cc: linux-mips , "linux-kernel.org" Subject: Re: linux cache routines for Write-back cache policy on MIPS24KE In-Reply-To: <119374.35234.qm@web8401.mail.in.yahoo.com> Message-ID: References: <119374.35234.qm@web8401.mail.in.yahoo.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1158 Lines: 33 On Mon, 1 Oct 2007, veerasena reddy wrote: > I have ported Linux-2.6.18 kernel on MIPS24KE > processor. I am using write back cache policy. > > Could you please guide me under what cases the below > cache API's are being used: > - dma_cache_wback_inv() : Could you explain what > exactly this function does It does both write back and invalidate. > - dma_cache_wback() : This function write back the > cache data to memory > - dma_cache_inv : This function invalidate the cache > tags. so subsequent access will fetch from memory. Note that 2.6.18 is old. The above functions are intended to be removed. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/