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authorJoe Perches <joe@perches.com>2015-02-13 23:38:18 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-14 06:21:39 +0100
commit62ec818f55ccc3e1a04a6634f8e541596778af5d (patch)
treebe3c61cd325d694c8a3d3e5b8d1d2f28199aa9c4 /scripts/checkpatch.pl
parentbitmap, cpumask, nodemask: remove dedicated formatting functions (diff)
downloadlinux-62ec818f55ccc3e1a04a6634f8e541596778af5d.tar.xz
linux-62ec818f55ccc3e1a04a6634f8e541596778af5d.zip
checkpatch: emit an error when using predefined timestamp macros
Since commit fe7c36c7bde1 ("Makefile: Build with -Werror=date-time if the compiler supports it"), use of __DATE__, __TIME__, and __TIMESTAMP__ has not been allowed. As this test is gcc version specific (> 4.9), it hasn't prevented a few new uses from creeping into the kernel sources. Make checkpatch complain about them. Signed-off-by: Joe Perches <joe@perches.com> Original-patch-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
-rwxr-xr-xscripts/checkpatch.pl6
1 files changed, 6 insertions, 0 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index f0bb6d60c07b..501c286369c9 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5089,6 +5089,12 @@ sub process {
}
}
+# check for uses of __DATE__, __TIME__, __TIMESTAMP__
+ while ($line =~ /\b(__(?:DATE|TIME|TIMESTAMP)__)\b/g) {
+ ERROR("DATE_TIME",
+ "Use of the '$1' macro makes the build non-deterministic\n" . $herecurr);
+ }
+
# check for use of yield()
if ($line =~ /\byield\s*\(\s*\)/) {
WARN("YIELD",