The patch titled Subject: checkpatch: emit an error when using predefined timestamp macros has been added to the -mm tree. Its filename is checkpatch-emit-an-error-when-using-predefined-timestamp-macros.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/checkpatch-emit-an-error-when-using-predefined-timestamp-macros.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/checkpatch-emit-an-error-when-using-predefined-timestamp-macros.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Joe Perches <joe@xxxxxxxxxxx> Subject: 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@xxxxxxxxxxx> Original-patch-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- scripts/checkpatch.pl | 6 ++++++ 1 file changed, 6 insertions(+) diff -puN scripts/checkpatch.pl~checkpatch-emit-an-error-when-using-predefined-timestamp-macros scripts/checkpatch.pl --- a/scripts/checkpatch.pl~checkpatch-emit-an-error-when-using-predefined-timestamp-macros +++ a/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", _ Patches currently in -mm which might be from joe@xxxxxxxxxxx are origin.patch mailmap-santosh-shilimkar-has-moved.patch mm-utilc-add-kstrimdup.patch checkpatch-emit-an-error-when-using-predefined-timestamp-macros.patch linux-next.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html