From 1ba8dfd17ead04de18bfca7b68c2a144c8be736a Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Mon, 17 Dec 2012 16:01:48 -0800 Subject: checkpatch: warn about using CONFIG_EXPERIMENTAL This config item has not carried much meaning for a while now and is almost always enabled by default. As agreed during the Linux kernel summit, it is being removed. This will discourage future addition of CONFIG_EXPERIMENTAL while it is being phased out. Signed-off-by: Kees Cook Cc: Andy Whitcroft Cc: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/checkpatch.pl | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index d4f61a6fed5..cd251d5f3f1 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -1757,6 +1757,13 @@ sub process { #print "is_start<$is_start> is_end<$is_end> length<$length>\n"; } +# discourage the addition of CONFIG_EXPERIMENTAL in Kconfig. + if ($realfile =~ /Kconfig/ && + $line =~ /.\s*depends on\s+.*\bEXPERIMENTAL\b/) { + WARN("CONFIG_EXPERIMENTAL", + "Use of CONFIG_EXPERIMENTAL is deprecated. For alternatives, see https://lkml.org/lkml/2012/10/23/580\n"); + } + if (($realfile =~ /Makefile.*/ || $realfile =~ /Kbuild.*/) && ($line =~ /\+(EXTRA_[A-Z]+FLAGS).*/)) { my $flag = $1; @@ -1912,6 +1919,12 @@ sub process { # check we are in a valid C source file if not then ignore this hunk next if ($realfile !~ /\.(h|c)$/); +# discourage the addition of CONFIG_EXPERIMENTAL in #if(def). + if ($line =~ /^\+\s*\#\s*if.*\bCONFIG_EXPERIMENTAL\b/) { + WARN("CONFIG_EXPERIMENTAL", + "Use of CONFIG_EXPERIMENTAL is deprecated. For alternatives, see https://lkml.org/lkml/2012/10/23/580\n"); + } + # check for RCS/CVS revision markers if ($rawline =~ /^\+.*\$(Revision|Log|Id)(?:\$|)/) { WARN("CVS_KEYWORD", -- cgit v1.2.3