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checkpatch: warn on comparisons to get_jiffies_64()

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Comparing get_jiffies_64() is almost always wrong and time_before64 and
time_after64 should be used instead.

Warn on any comparison to get_jiffies_64().

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2013-07-03 15:05:26 -07:00 committed by Linus Torvalds
parent 36ec19390e
commit 9d7a34a513
1 changed files with 6 additions and 0 deletions
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6
scripts/checkpatch.pl
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@ -3305,6 +3305,12 @@ sub process {
"Comparing jiffies is almost always wrong; prefer time_after, time_before and friends\n" . $herecurr);
}
# check for comparisons of get_jiffies_64()
if ($line =~ /\bget_jiffies_64\s*\(\s*\)\s*$Compare|$Compare\s*get_jiffies_64\s*\(\s*\)/) {
WARN("JIFFIES_COMPARISON",
"Comparing get_jiffies_64() is almost always wrong; prefer time_after64, time_before64 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";