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checkpatch: warn on logging continuations

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pr_cont(...) and printk(KERN_CONT ...) uses should be discouraged
as their output can be interleaved by multiple logging processes.

Link: http://lkml.kernel.org/r/7100ba00098694ec81471a299583ed068975fd05.1483465888.git.joe@perches.com
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 2017-02-24 15:01:31 -08:00 committed by Linus Torvalds
parent 77cb8546bc
commit 45c55e92fc
1 changed files with 6 additions and 0 deletions
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6
scripts/checkpatch.pl
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@ -5287,6 +5287,12 @@ sub process {
}
}
# check for logging continuations
if ($line =~ /\bprintk\s*\(\s*KERN_CONT\b|\bpr_cont\s*\(/) {
WARN("LOGGING_CONTINUATION",
"Avoid logging continuation uses where feasible\n" . $herecurr);
}
# check for mask then right shift without a parentheses
if ($^V && $^V ge 5.10.0 &&
$line =~ /$LvalOrFunc\s*\&\s*($LvalOrFunc)\s*>>/ &&