From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 974D1C2D0E4 for ; Tue, 17 Nov 2020 12:28:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 344062222B for ; Tue, 17 Nov 2020 12:28:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="c2xSO8qz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728166AbgKQM14 (ORCPT ); Tue, 17 Nov 2020 07:27:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726019AbgKQM1z (ORCPT ); Tue, 17 Nov 2020 07:27:55 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F19EC0613CF; Tue, 17 Nov 2020 04:27:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=Ob6Oe8aHKU7Bjujs6GOgVFp6Ew5qkHmmaYKvZwb2CbE=; b=c2xSO8qznF4CZ16mWzdjvcrkXa 2cWZarRBWXc2BB9fz7bcb9y3zaKn621I7hy0zt4xsGoVh0XfwNWwW/jwqzbFzpCXwNJlISs8o5uh2 T+NP729Ujh6Cua/VwJsj1ynSJTLPYveFp2cCtRFIxc7x/YLyU/kaGa1sweYSCepo8UwIRjIY33NOP p5vYB+eymPhzC6y1FjCPhmtyypBK8mIuAKbg+VqU6aoQSlZ4O5cGLB6mbbNTjjpmbgG8AA9RohIZK UoF9413SOB7J/9tg/TujMODOl1vzyMi/SJWifbRQeB7nw6q8EANO+h49rkTZSOohwZg4zozkMEHKR /YcvPSZg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kf05P-0008MB-Gd; Tue, 17 Nov 2020 12:27:52 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id D95E5301959; Tue, 17 Nov 2020 13:27:50 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id C3FDE203C45DF; Tue, 17 Nov 2020 13:27:50 +0100 (CET) Date: Tue, 17 Nov 2020 13:27:50 +0100 From: Peter Zijlstra To: Shuah Khan Cc: Kees Cook , Greg KH , corbet@lwn.net, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 01/13] seqnum_ops: Introduce Sequence Number Ops Message-ID: <20201117122750.GH3121406@hirez.programming.kicks-ass.net> References: <202011101614.E7D880689@keescook> <3075a4fd-8615-1459-2b20-b7d9d2be34ff@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Nov 12, 2020 at 02:27:49PM -0700, Shuah Khan wrote: > atomic64_t depends on CONFIG_64BIT > > include/linux/types.h > > #ifdef CONFIG_64BIT > typedef struct { > s64 counter; > } atomic64_t; > #endif That's because some 32bit archs need to override the type definition. atomic64_t is available on 32bit, although sometimes it is atrocious crap.