checkpatch.pl: Suggest lockdep instead of asserting !spin_is_locked()
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>
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index dd29e3c..377f373 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -6389,6 +6389,12 @@
"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;
