Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753094AbaJ2FVm (ORCPT ); Wed, 29 Oct 2014 01:21:42 -0400 Received: from smtprelay0207.hostedemail.com ([216.40.44.207]:43629 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751145AbaJ2FVk (ORCPT ); Wed, 29 Oct 2014 01:21:40 -0400 X-Session-Marker: 6A6F6540706572636865732E636F6D X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,joe@perches.com,:::::::::::::::,RULES_HIT:41:355:379:541:599:988:989:1260:1277:1311:1313:1314:1345:1359:1373:1437:1515:1516:1518:1534:1538:1593:1594:1711:1714:1730:1747:1777:1792:2393:2559:2562:2828:2901:3138:3139:3140:3141:3142:3351:3622:3865:3866:3867:3872:3873:3874:4321:5007:6120:6261:7903:10004:10400:10848:11026:11232:11473:11658:11914:12114:12438:12517:12519:12740:13069:13311:13357:21080,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0 X-HE-Tag: pig46_e541ac98b244 X-Filterd-Recvd-Size: 2047 Message-ID: <1414560096.10912.18.camel@perches.com> Subject: Re: [RFC V4 1/3] add CONFIG_HAVE_ARCH_BITREVERSE to support rbit instruction From: Joe Perches To: "Wang, Yalin" Cc: "'Rob Herring'" , Russell King - ARM Linux , Will Deacon , "linux-kernel@vger.kernel.org" , "akinobu.mita@gmail.com" , "linux-mm@kvack.org" , "linux-arm-kernel@lists.infradead.org" Date: Tue, 28 Oct 2014 22:21:36 -0700 In-Reply-To: <35FD53F367049845BC99AC72306C23D103E010D1825F@CNBJMBX05.corpusers.net> References: <35FD53F367049845BC99AC72306C23D103E010D18254@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D103E010D18257@CNBJMBX05.corpusers.net> <1414392371.8884.2.camel@perches.com> <35FD53F367049845BC99AC72306C23D103E010D1825F@CNBJMBX05.corpusers.net> Content-Type: text/plain; charset="ISO-8859-1" X-Mailer: Evolution 3.12.7-0ubuntu1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2014-10-29 at 13:14 +0800, Wang, Yalin wrote: > this change add CONFIG_HAVE_ARCH_BITREVERSE config option, > so that we can use arm/arm64 rbit instruction to do bitrev operation > by hardware. > We also change byte_rev_table[] to be static, > to make sure no drivers can access it directly. You break the build with this patch. You can't do this until the users of the table are converted. So far, they are not. I submitted patches for these uses, but those patches are not yet applied. Please make sure the dependencies for your patches are explicitly stated. -- 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/