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checkpatch: Warn about data_race() without comment

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Warn about applications of data_race() without a comment, to encourage
documenting the reasoning behind why it was deemed safe.

Suggested-by: Will Deacon <will@kernel.org>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Marco Elver 2020-04-01 12:17:14 +02:00 • committed by Paul E. McKenney
parent 52785b6ae8
commit 5099a722e9
1 changed files with 8 additions and 0 deletions
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8
scripts/checkpatch.pl
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@ -5833,6 +5833,14 @@ sub process {
}
}
# check for data_race without a comment.
if ($line =~ /\bdata_race\s*\(/) {
if (!ctx_has_comment($first_line, $linenr)) {
WARN("DATA_RACE",
"data_race without comment\n" . $herecurr);
}
}
# check for smp_read_barrier_depends and read_barrier_depends
if (!$file && $line =~ /\b(smp_|)read_barrier_depends\s*\(/) {
WARN("READ_BARRIER_DEPENDS",