From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1755144AbbLLC4n (ORCPT <rfc822;w@1wt.eu>);
	Fri, 11 Dec 2015 21:56:43 -0500
Received: from mail-ob0-f173.google.com ([209.85.214.173]:34328 "EHLO
	mail-ob0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1752495AbbLLC4j (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Fri, 11 Dec 2015 21:56:39 -0500
From: Boqun Feng <boqun.feng@gmail.com>
To: linux-sparse@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Christopher Li <sparse@chrisli.org>,
        "Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
        Josh Triplett <josh@joshtriplett.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
        Lai Jiangshan <jiangshanlai@gmail.com>,
        Andy Whitcroft <apw@canonical.com>, Joe Perches <joe@perches.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Jiang Liu <jiang.liu@linux.intel.com>,
        Marc Zyngier <marc.zyngier@arm.com>,
        Mika Westerberg <mika.westerberg@linux.intel.com>,
        Russell King <rmk+kernel@arm.linux.org.uk>,
        Brian Norris <computersforpeace@gmail.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Boqun Feng <boqun.feng@gmail.com>
Subject: [RFC 0/3] sparse: Introduce __private to privatize members of structs
Date: Sat, 12 Dec 2015 10:55:59 +0800
Message-Id: <1449888962-29348-1-git-send-email-boqun.feng@gmail.com>
X-Mailer: git-send-email 2.6.4
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Hi all,

As I proposed:

http://marc.info/?l=linux-arm-kernel&m=144944469805753

, we can define a __private modifier for sparse to detect misuses of private
members of structs. This could make maintenace a little easier and prevent some
potential bugs.

This patchset serves as a POC and consists of three patches:

1.	Introduce __private and related macro, also improve compiler.h a litte
	bit

2.	Privatize rcu_node::lock

3.	Privatize irq_common_data::state_use_accessors

This patchset is against

	-rcu/rcu/next	5f343fc7f0ce7edfe344e7cc5afdfe145a18f802

because this depends on commits:
	
	"rcu: Create transitive rnp->lock acquisition functions"

and

	"rcu: Add transitivity to remaining rcu_node ->lock acquisitions


I tried to use 0day to test this, but seems the email transfer from 0day to my
mail box is very slow recently, so I haven't received a recent result yet. But
as one can see, this patchset doesn't have any functional modification, the 0day
may not find anything interesting ;-)


Looking forward to any suggestion, question and comment ;-)

Regards,
Boqun