From patchwork Thu Oct 7 15:44:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 12542153 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C281FC433F5 for ; Thu, 7 Oct 2021 15:44:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A96A9610EA for ; Thu, 7 Oct 2021 15:44:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242396AbhJGPqC (ORCPT ); Thu, 7 Oct 2021 11:46:02 -0400 Received: from mga07.intel.com ([134.134.136.100]:40735 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242389AbhJGPqC (ORCPT ); Thu, 7 Oct 2021 11:46:02 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10130"; a="289784186" X-IronPort-AV: E=Sophos;i="5.85,355,1624345200"; d="scan'208";a="289784186" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Oct 2021 08:44:08 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,355,1624345200"; d="scan'208";a="624303794" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 07 Oct 2021 08:44:03 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 36214159; Thu, 7 Oct 2021 18:44:09 +0300 (EEST) From: Andy Shevchenko To: Brendan Higgins , Andy Shevchenko , Peter Zijlstra , Thomas Gleixner , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com, linux-media@vger.kernel.org Cc: Ingo Molnar , Will Deacon , Waiman Long , Boqun Feng , Sakari Ailus , Laurent Pinchart , Mauro Carvalho Chehab , Andrew Morton , Miguel Ojeda , jic23@kernel.org, linux@rasmusvillemoes.dk, Thorsten Leemhuis Subject: [PATCH v4 0/7] kernel.h further split Date: Thu, 7 Oct 2021 18:44:00 +0300 Message-Id: <20211007154407.29746-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org v3: https://lore.kernel.org/linux-media/20211007150339.28910-1-andriy.shevchenko@linux.intel.com/T/#u v2: https://lore.kernel.org/linux-media/20211007095129.22037-1-andriy.shevchenko@linux.intel.com/T/#u The kernel.h is a set of something which is not related to each other and often used in non-crossed compilation units, especially when drivers need only one or two macro definitions from it. Here is the split of container_of(). The goals are the following: - untwist the dependency hell a bit - drop kernel.h inclusion where it's only used for container_of() - speed up C preprocessing. The build speedup is 1.83% (ccache approach, see v2 cover letter for the details) 0.5% (kcbench approach, see v3 cover letter for the details) In v4: - dropped kobject.h change (Greg) - Cc'ed more people (as per v1) In v3: - split patch 2 to more patches (Greg) - excluded C changes (Herbert, Greg) - measured with kcbench, see below (Greg) Andy Shevchenko (7): kernel.h: Drop unneeded inclusion from other headers kernel.h: Split out container_of() and typeof_member() macros kunit: Replace kernel.h with the necessary inclusions list.h: Replace kernel.h with the necessary inclusions llist: Replace kernel.h with the necessary inclusions plist: Replace kernel.h with the necessary inclusions media: entity: Replace kernel.h with the necessary inclusions include/kunit/test.h | 14 ++++++++++++-- include/linux/container_of.h | 37 ++++++++++++++++++++++++++++++++++++ include/linux/kernel.h | 31 +----------------------------- include/linux/list.h | 6 ++++-- include/linux/llist.h | 4 +++- include/linux/plist.h | 5 ++++- include/linux/rwsem.h | 1 - include/linux/spinlock.h | 1 - include/media/media-entity.h | 3 ++- 9 files changed, 63 insertions(+), 39 deletions(-) create mode 100644 include/linux/container_of.h