From patchwork Wed Mar 16 19:20:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Randy Dunlap X-Patchwork-Id: 12783120 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 43295C4167B for ; Wed, 16 Mar 2022 19:20:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357969AbiCPTV6 (ORCPT ); Wed, 16 Mar 2022 15:21:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52202 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357942AbiCPTV4 (ORCPT ); Wed, 16 Mar 2022 15:21:56 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A7EC26AA73; Wed, 16 Mar 2022 12:20:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=vYNWn7/gWvdXVAuSqHEJdNrAy6DmSK7DzABaWvfRolU=; b=uz/gKWuyajnQkK6EymeSIkywI8 AKee4iVGItlSmtUcyfpMs2rpMKsnM+1/6giveeY/JiJlrqSVxOo/uKyCQMLRnf2rtJLUGAat2DheY jlAWn5xBb7LboEv7888ALv/5/v+uInPkhSvt1z/XZ3RC/iEuJpn9ACgG9yZgYz+Oi6jgUxBqSCUmx aCyq4+1vi7jjqsiV+NLiqIgV4WBYdtKnDD1jgX6hBWsAS/lCde6/J+6WW6RQvJO43a1TKudjCx5Lv cA480jryLVqH5og5d6tTRnTuMIQ/mMRRCUvOHVwbY4zZr+mPiy5PCW5pN7fH3DP5OwZaIlFLgCqCM qw9BeXNQ==; Received: from [2601:1c0:6280:3f0::aa0b] (helo=bombadil.infradead.org) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1nUZCC-00EArp-TR; Wed, 16 Mar 2022 19:20:33 +0000 From: Randy Dunlap To: linux-kernel@vger.kernel.org Cc: Randy Dunlap , "Michael S. Tsirkin" , Jason Wang , Paolo Bonzini , Stefan Hajnoczi , Jens Axboe , Amit Shah , Arnd Bergmann , Greg Kroah-Hartman , Eli Cohen , Saeed Mahameed , Leon Romanovsky , Pablo Neira Ayuso , Jozsef Kadlecsik , Florian Westphal , "David S. Miller" , Jakub Kicinski , "James E.J. Bottomley" , "Martin K. Petersen" , Felipe Balbi , =?utf-8?b?TWljaGHFgiBNaXJvc8WC?= =?utf-8?b?YXc=?= , Sebastian Andrzej Siewior , Krzysztof Opasiak , Igor Kotrasinski , Valentina Manea , Shuah Khan , Shuah Khan , Jussi Kivilinna , Joachim Fritschi , Herbert Xu , Thomas Gleixner , Steven Rostedt , Ingo Molnar , Karol Herbst , Pekka Paalanen , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Borislav Petkov , "H. Peter Anvin" , netfilter-devel@vger.kernel.org, coreteam@netfilter.org, netdev@vger.kernel.org, linux-block@vger.kernel.org, linux-crypto@vger.kernel.org, linux-rdma@vger.kernel.org, linux-scsi@vger.kernel.org, linux-usb@vger.kernel.org, nouveau@lists.freedesktop.org, virtualization@lists.linux-foundation.org, x86@kernel.org Subject: [PATCH 9/9] testmmiotrace: eliminate anonymous module_init & module_exit Date: Wed, 16 Mar 2022 12:20:10 -0700 Message-Id: <20220316192010.19001-10-rdunlap@infradead.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220316192010.19001-1-rdunlap@infradead.org> References: <20220316192010.19001-1-rdunlap@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Eliminate anonymous module_init() and module_exit(), which can lead to confusion or ambiguity when reading System.map, crashes/oops/bugs, or an initcall_debug log. Give each of these init and exit functions unique driver-specific names to eliminate the anonymous names. Example 1: (System.map) ffffffff832fc78c t init ffffffff832fc79e t init ffffffff832fc8f8 t init Example 2: (initcall_debug log) calling init+0x0/0x12 @ 1 initcall init+0x0/0x12 returned 0 after 15 usecs calling init+0x0/0x60 @ 1 initcall init+0x0/0x60 returned 0 after 2 usecs calling init+0x0/0x9a @ 1 initcall init+0x0/0x9a returned 0 after 74 usecs Fixes: 8b7d89d02ef3 ("x86: mmiotrace - trace memory mapped IO") Signed-off-by: Randy Dunlap Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Ingo Molnar Cc: Karol Herbst Cc: Pekka Paalanen Cc: Dave Hansen Cc: Andy Lutomirski Cc: Peter Zijlstra Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: nouveau@lists.freedesktop.org Cc: x86@kernel.org Acked-by: Steven Rostedt (Google) --- arch/x86/mm/testmmiotrace.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- lnx-517-rc8.orig/arch/x86/mm/testmmiotrace.c +++ lnx-517-rc8/arch/x86/mm/testmmiotrace.c @@ -113,7 +113,7 @@ static void do_test_bulk_ioremapping(voi synchronize_rcu(); } -static int __init init(void) +static int __init testmmiotrace_init(void) { unsigned long size = (read_far) ? (8 << 20) : (16 << 10); int ret = security_locked_down(LOCKDOWN_MMIOTRACE); @@ -136,11 +136,11 @@ static int __init init(void) return 0; } -static void __exit cleanup(void) +static void __exit testmmiotrace_cleanup(void) { pr_debug("unloaded.\n"); } -module_init(init); -module_exit(cleanup); +module_init(testmmiotrace_init); +module_exit(testmmiotrace_cleanup); MODULE_LICENSE("GPL");