From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qg0-f45.google.com (mail-qg0-f45.google.com [209.85.192.45]) by kanga.kvack.org (Postfix) with ESMTP id E74BC28001E for ; Fri, 31 Oct 2014 06:43:21 -0400 (EDT) Received: by mail-qg0-f45.google.com with SMTP id z107so5365808qgd.32 for ; Fri, 31 Oct 2014 03:43:21 -0700 (PDT) Received: from foss-mx-na.foss.arm.com (foss-mx-na.foss.arm.com. [217.140.108.86]) by mx.google.com with ESMTP id j4si4401947qai.6.2014.10.31.03.43.20 for ; Fri, 31 Oct 2014 03:43:21 -0700 (PDT) Date: Fri, 31 Oct 2014 10:43:06 +0000 From: Will Deacon Subject: Re: [RFC V6 3/3] arm64:add bitrev.h file to support rbit instruction Message-ID: <20141031104305.GC6731@arm.com> References: <35FD53F367049845BC99AC72306C23D103E010D18260@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D103E010D18261@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D103E010D18264@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D103E010D18265@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D103E010D18266@CNBJMBX05.corpusers.net> <20141030120127.GC32589@arm.com> <20141030135749.GE32589@arm.com> <35FD53F367049845BC99AC72306C23D103E010D18272@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D103E010D18274@CNBJMBX05.corpusers.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <35FD53F367049845BC99AC72306C23D103E010D18274@CNBJMBX05.corpusers.net> Sender: owner-linux-mm@kvack.org List-ID: To: "Wang, Yalin" Cc: 'Ard Biesheuvel' , 'Russell King - ARM Linux' , "'linux-kernel@vger.kernel.org'" , "'akinobu.mita@gmail.com'" , "'linux-mm@kvack.org'" , 'Joe Perches' , "'linux-arm-kernel@lists.infradead.org'" On Fri, Oct 31, 2014 at 05:41:48AM +0000, Wang, Yalin wrote: > This patch add bitrev.h file to support rbit instruction, > so that we can do bitrev operation by hardware. > Signed-off-by: Yalin Wang > --- > arch/arm64/Kconfig | 1 + > arch/arm64/include/asm/bitrev.h | 21 +++++++++++++++++++++ > 2 files changed, 22 insertions(+) > create mode 100644 arch/arm64/include/asm/bitrev.h > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index 9532f8d..b1ec1dd 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -35,6 +35,7 @@ config ARM64 > select HANDLE_DOMAIN_IRQ > select HARDIRQS_SW_RESEND > select HAVE_ARCH_AUDITSYSCALL > + select HAVE_ARCH_BITREVERSE > select HAVE_ARCH_JUMP_LABEL > select HAVE_ARCH_KGDB > select HAVE_ARCH_TRACEHOOK > diff --git a/arch/arm64/include/asm/bitrev.h b/arch/arm64/include/asm/bitrev.h > new file mode 100644 > index 0000000..706a209 > --- /dev/null > +++ b/arch/arm64/include/asm/bitrev.h > @@ -0,0 +1,21 @@ > +#ifndef __ASM_ARM64_BITREV_H > +#define __ASM_ARM64_BITREV_H Really minor nit, but we don't tend to include 'ARM64' in our header guards, so this should just be __ASM_BITREV_H. With that change, Acked-by: Will Deacon Will -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org