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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 506FBC43441 for ; Thu, 15 Nov 2018 23:10:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1F7572145D for ; Thu, 15 Nov 2018 23:10:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1F7572145D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388937AbeKPJUm (ORCPT ); Fri, 16 Nov 2018 04:20:42 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:46812 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725979AbeKPJUm (ORCPT ); Fri, 16 Nov 2018 04:20:42 -0500 Received: from akpm3.svl.corp.google.com (unknown [104.133.8.65]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id 74614BBF; Thu, 15 Nov 2018 23:10:49 +0000 (UTC) Date: Thu, 15 Nov 2018 15:10:48 -0800 From: Andrew Morton To: Mark Rutland Cc: mingo@kernel.org, arnd@arndb.de, aryabinin@virtuozzo.com, boqun.feng@gmail.com, catalin.marinas@arm.com, dvyukov@google.com, glider@google.com, linuxdrivers@attotech.com, linux-kernel@vger.kernel.org, peterz@infradead.org, will.deacon@arm.com, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCHv3 1/6] atomics: add common header generation files Message-Id: <20181115151048.26244bad301a3bcb9a450060@linux-foundation.org> In-Reply-To: <20180904104830.2975-2-mark.rutland@arm.com> References: <20180904104830.2975-1-mark.rutland@arm.com> <20180904104830.2975-2-mark.rutland@arm.com> X-Mailer: Sylpheed 3.6.0 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 4 Sep 2018 11:48:25 +0100 Mark Rutland wrote: > To minimize repetition, to allow for future rework, and to ensure > regularity of the various atomic APIs, we'd like to automatically > generate (the bulk of) a number of headers related to atomics. > > This patch adds the infrastructure to do so, leaving actual conversion > of headers to subsequent patches. This thing is appallingly slow. `sh scripts/atomic/check-atomics.sh' takes 8 seconds on a machine which builds an allnoconfig kernel in 30 seconds. Um, no. Just no. Please find a way to make this overhead go away.