Subject: + checkpatch-warn-on-comparisons-to-jiffies.patch added to -mm tree To: joe@xxxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Tue, 11 Jun 2013 15:50:36 -0700 The patch titled Subject: checkpatch: warn on comparisons to jiffies has been added to the -mm tree. Its filename is checkpatch-warn-on-comparisons-to-jiffies.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: warn on comparisons to jiffies Comparing jiffies is almost always wrong and time_before and time_after should be used instead. Warn on any comparison to jiffies. Signed-off-by: Joe Perches <joe@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- scripts/checkpatch.pl | 6 ++++++ 1 file changed, 6 insertions(+) diff -puN scripts/checkpatch.pl~checkpatch-warn-on-comparisons-to-jiffies scripts/checkpatch.pl --- a/scripts/checkpatch.pl~checkpatch-warn-on-comparisons-to-jiffies +++ a/scripts/checkpatch.pl @@ -3299,6 +3299,12 @@ sub process { } } +# check for comparisons of jiffies + if ($line =~ /\bjiffies\s*$Compare|$Compare\s*jiffies\b/) { + WARN("JIFFIES_COMPARISON", + "Comparing jiffies is almost always wrong; prefer time_after, time_before and friends\n" . $herecurr); + } + # warn about #ifdefs in C files # if ($line =~ /^.\s*\#\s*if(|n)def/ && ($realfile =~ /\.c$/)) { # print "#ifdef in C files should be avoided\n"; _ Patches currently in -mm which might be from joe@xxxxxxxxxxx are linux-next.patch checkpatch-change-camelcase-test-and-make-it-strict.patch checkpatch-warn-when-using-gccs-binary-constant-extension.patch checkpatch-add-strict-preference-for-p-=-kmallocsizeofp.patch checkpatch-remove-quote-from-camelcase-test.patch checkpatch-improve-network-block-comment-test-and-message.patch checkpatch-warn-when-networking-block-comment-lines-dont-start-with.patch checkpatch-warn-on-comparisons-to-jiffies.patch checkpatch-warn-on-comparisons-to-get_jiffies_64.patch checkpatch-reduce-false-positive-rate-of-complex-macros.patch checkpatch-add-a-placeholder-to-check-blank-lines-before-declarations.patch checkpatch-dont-warn-on-blank-lines-before-after-braces-as-often.patch checkpatch-add-a-strict-test-for-comparison-to-true-false.patch checkpatch-improve-no-space-after-cast-test.patch checkpatch-create-an-experimental-fix-option-to-correct-patches.patch checkpatch-move-test-for-space-before-semicolon-after-operator-spacing.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