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checkpatch.pl: Suggest lockdep instead of asserting !spin_is_locked()

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This commit points people who might otherwise code up something like
WARN_ON(!spin_is_locked(&mylock)) to lockdep_assert_held(&mylock).

Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
This commit is contained in:
Paul E. McKenney 2018-11-11 10:49:10 -08:00
parent 9189c7e706
commit 3d709ab5a1
1 changed files with 6 additions and 0 deletions
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6
scripts/checkpatch.pl
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@ -6389,6 +6389,12 @@ sub process {
"please use device_initcall() or more appropriate function instead of __initcall() (see include/linux/init.h)\n" . $herecurr);
}
# check for spin_is_locked(), suggest lockdep instead
if ($line =~ /\bspin_is_locked\(/) {
WARN("USE_LOCKDEP",
"Where possible, use lockdep_assert_held instead of assertions based on spin_is_locked\n" . $herecurr);
}
# check for deprecated apis
if ($line =~ /\b($deprecated_apis_search)\b\s*\(/) {
my $deprecated_api = $1;