From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754359AbbEPFXZ (ORCPT ); Sat, 16 May 2015 01:23:25 -0400 Received: from smtprelay0148.hostedemail.com ([216.40.44.148]:46452 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750964AbbEPFXY (ORCPT ); Sat, 16 May 2015 01:23:24 -0400 X-Session-Marker: 6A6F6540706572636865732E636F6D X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,joe@perches.com,:::,RULES_HIT:41:355:379:541:800:960:973:982:988:989:1260:1277:1311:1313:1314:1345:1373:1437:1515:1516:1518:1534:1543:1593:1594:1711:1730:1747:1777:1792:2197:2199:2393:2559:2562:2828:2902:3138:3139:3140:3141:3142:3354:3653:3865:3866:3867:3868:3870:3871:4321:4605:5007:6117:6119:6261:8957:9592:10004:10400:10848:11026:11473:11658:11914:12043:12291:12296:12517:12519:12555:12683:12740:13255:14110:14394:21080,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0 X-HE-Tag: grade83_74c13038ef84e X-Filterd-Recvd-Size: 3703 Message-ID: <1431753801.15709.51.camel@perches.com> Subject: [PATCH] checkpatch: Add --strict warning for c99 fixed size typedefs : int_t From: Joe Perches To: LKML Cc: Andrew Morton Date: Fri, 15 May 2015 22:23:21 -0700 Content-Type: text/plain; charset="ISO-8859-1" X-Mailer: Evolution 3.12.11-0ubuntu3 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Using declarations like u_int16_t in kernel code is not preferred. Suggest the kernel sized types instead of the c99 types when not in the uapi directory. Add a $typeC99Typedefs variable for the types to check and neaten the other typedef variables. Signed-off-by: Joe Perches --- scripts/checkpatch.pl | 31 +++++++++++++++++++++++++------ 1 file changed, 25 insertions(+), 6 deletions(-) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 89b1df4..9ffccc7 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -347,15 +347,20 @@ our $UTF8 = qr{ | $NON_ASCII_UTF8 }x; +our $typeC99Typedefs = qr{(?:__)?(?:[us]_?)?int_?(?:8|16|32|64)_t}; our $typeOtherOSTypedefs = qr{(?x: u_(?:char|short|int|long) | # bsd u(?:nchar|short|int|long) # sysv )}; - -our $typeTypedefs = qr{(?x: +our $typeKernelTypedefs = qr{(?x: (?:__)?(?:u|s|be|le)(?:8|16|32|64)| atomic_t )}; +our $typeTypedefs = qr{(?x: + $typeC99Typedefs\b| + $typeOtherOSTypedefs\b| + $typeKernelTypedefs\b +)}; our $logFunctions = qr{(?x: printk(?:_ratelimited|_once|)| @@ -516,7 +521,6 @@ sub build_types { my $allWithAttr = "(?x: \n" . join("|\n ", @typeListWithAttr) . "\n)"; $Modifier = qr{(?:$Attribute|$Sparse|$mods)}; $BasicType = qr{ - (?:$typeOtherOSTypedefs\b)| (?:$typeTypedefs\b)| (?:${all}\b) }x; @@ -524,7 +528,6 @@ sub build_types { (?:$Modifier\s+|const\s+)* (?: (?:typeof|__typeof__)\s*\([^\)]*\)| - (?:$typeOtherOSTypedefs\b)| (?:$typeTypedefs\b)| (?:${all}\b) ) @@ -542,7 +545,6 @@ sub build_types { (?: (?:typeof|__typeof__)\s*\([^\)]*\)| (?:$typeTypedefs\b)| - (?:$typeOtherOSTypedefs\b)| (?:${allWithAttr}\b) ) (?:\s+$Modifier|\s+const)* @@ -3264,7 +3266,6 @@ sub process { $line !~ /\btypedef\s+$Type\s*\(\s*\*?$Ident\s*\)\s*\(/ && $line !~ /\btypedef\s+$Type\s+$Ident\s*\(/ && $line !~ /\b$typeTypedefs\b/ && - $line !~ /\b$typeOtherOSTypedefs\b/ && $line !~ /\b__bitwise(?:__|)\b/) { WARN("NEW_TYPEDEFS", "do not add new typedefs\n" . $herecurr); @@ -4973,6 +4974,24 @@ sub process { "Using weak declarations can have unintended link defects\n" . $herecurr); } +# check for c99 types like uint8_t used outside of uapi/ + if ($realfile !~ m@\binclude/uapi/@ && + $line =~ /\b($Declare)\s*$Ident\s*[=;,\[]/) { + my $type = $1; + if ($type =~ /\b($typeC99Typedefs)\b/) { + $type = $1; + my $kernel_type = 'u'; + $kernel_type = 's' if ($type =~ /^_*[si]/); + $type =~ /(\d+)/; + $kernel_type .= $1; + if (CHK("PREFER_KERNEL_TYPES", + "Prefer kernel type '$kernel_type' over '$type'\n" . $herecurr) && + $fix) { + $fixed[$fixlinenr] =~ s/\b$type\b/$kernel_type/; + } + } + } + # check for sizeof(&) if ($line =~ /\bsizeof\s*\(\s*\&/) { WARN("SIZEOF_ADDRESS",