From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: [PATCH 2/3] checkpatch: check for __smp outside barrier.h Date: Mon, 4 Jan 2016 13:37:00 +0200 Message-ID: <1451907395-15978-3-git-send-email-mst@redhat.com> References: <1451907395-15978-1-git-send-email-mst@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <1451907395-15978-1-git-send-email-mst@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , virtualization@lists.linux-foundation.org, "H. Peter Anvin" , sparclinux@vger.kernel.org, Ingo Molnar , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Russell King - ARM Linux , Arnd Bergmann , x86@kernel.org, Tony Lindgren , xen-devel@lists.xenproject.org, Ingo Molnar , linux-xtensa@linux-xtensa.org, user-mode-linux-devel@lists.sourceforge.net, Stefano Stabellini , Andrey Konovalov , adi-buildroot-devel@lists.sourceforge.net, "Cc : Andy Whitcroft" , Thomas Gleixner , linux-metag@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Andrew List-Id: linux-arch.vger.kernel.org Introduction of __smp barriers cleans up a bunch of duplicate code, but it gives people an additional handle onto a "new" set of barriers - just because they're prefixed with __* unfortunately doesn't stop anyone from using it (as happened with other arch stuff before.) Add a checkpatch test so it will trigger a warning. Reported-by: Russell King Signed-off-by: Michael S. Tsirkin --- scripts/checkpatch.pl | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 0245bbe..e3f9ad9 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -5130,6 +5130,17 @@ sub process { } } + my @underscore_smp_barriers = map {"__" . $_} @smp_barriers; + my $underscore_all_barriers = join('|', @underscore_smp_barriers); + + if ($realfile !~ m@^include/asm-generic/@ && + $realfile !~ m@/barrier\.h$@ && + $line =~ m/\b($underscore_all_barriers)\(/ && + $line !~ m/^.\s*\#\s*define\s+($underscore_all_barriers)\(/) { + WARN("MEMORY_BARRIER", + "__smp memory barriers shouldn't be used outside barrier.h and asm-generic\n" . $herecurr); + } + # check for waitqueue_active without a comment. if ($line =~ /\bwaitqueue_active\s*\(/) { if (!ctx_has_comment($first_line, $linenr)) { -- MST From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:47804 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753479AbcADLhJ (ORCPT ); Mon, 4 Jan 2016 06:37:09 -0500 Date: Mon, 4 Jan 2016 13:37:00 +0200 From: "Michael S. Tsirkin" Subject: [PATCH 2/3] checkpatch: check for __smp outside barrier.h Message-ID: <1451907395-15978-3-git-send-email-mst@redhat.com> References: <1451907395-15978-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1451907395-15978-1-git-send-email-mst@redhat.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: linux-kernel@vger.kernel.org Cc: "Cc : Andy Whitcroft" , Joe Perches , Peter Zijlstra , Arnd Bergmann , linux-arch@vger.kernel.org, Andrew Cooper , virtualization@lists.linux-foundation.org, Stefano Stabellini , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , David Miller , linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-metag@vger.kernel.org, linux-mips@linux-mips.org, x86@kernel.org, user-mode-linux-devel@lists.sourceforge.net, adi-buildroot-devel@lists.sourceforge.net, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, xen-devel@lists.xenproject.org, Ingo Molnar , Tony Lindgren , Andrey Konovalov , Russell King - ARM Linux Message-ID: <20160104113700.28Nn1ZHNS2xrTxU7Jv6fpXvygxOD2xrjNLk2_Vp3ELk@z> Introduction of __smp barriers cleans up a bunch of duplicate code, but it gives people an additional handle onto a "new" set of barriers - just because they're prefixed with __* unfortunately doesn't stop anyone from using it (as happened with other arch stuff before.) Add a checkpatch test so it will trigger a warning. Reported-by: Russell King Signed-off-by: Michael S. Tsirkin --- scripts/checkpatch.pl | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 0245bbe..e3f9ad9 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -5130,6 +5130,17 @@ sub process { } } + my @underscore_smp_barriers = map {"__" . $_} @smp_barriers; + my $underscore_all_barriers = join('|', @underscore_smp_barriers); + + if ($realfile !~ m@^include/asm-generic/@ && + $realfile !~ m@/barrier\.h$@ && + $line =~ m/\b($underscore_all_barriers)\(/ && + $line !~ m/^.\s*\#\s*define\s+($underscore_all_barriers)\(/) { + WARN("MEMORY_BARRIER", + "__smp memory barriers shouldn't be used outside barrier.h and asm-generic\n" . $herecurr); + } + # check for waitqueue_active without a comment. if ($line =~ /\bwaitqueue_active\s*\(/) { if (!ctx_has_comment($first_line, $linenr)) { -- MST