X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=scripts%2Fcheckpatch.pl;h=377f373db6c002ab87ce739be7f87f1d19bbe0cc;hb=cacf02df4b84d261d76db3d290ccb6b951df28c0;hp=c883ec55654fb27f36885b0f54cb7bdb44605066;hpb=d407c81adae57041ba82577e604e351f36b8afce;p=linux-2.6-block.git

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index c883ec55654f..377f373db6c0 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -573,6 +573,27 @@ foreach my $entry (@mode_permission_funcs) {
 }
 $mode_perms_search = "(?:${mode_perms_search})";
 
+our %deprecated_apis = (
+	"synchronize_rcu_bh"			=> "synchronize_rcu",
+	"synchronize_rcu_bh_expedited"		=> "synchronize_rcu_expedited",
+	"call_rcu_bh"				=> "call_rcu",
+	"rcu_barrier_bh"			=> "rcu_barrier",
+	"synchronize_sched"			=> "synchronize_rcu",
+	"synchronize_sched_expedited"		=> "synchronize_rcu_expedited",
+	"call_rcu_sched"			=> "call_rcu",
+	"rcu_barrier_sched"			=> "rcu_barrier",
+	"get_state_synchronize_sched"		=> "get_state_synchronize_rcu",
+	"cond_synchronize_sched"		=> "cond_synchronize_rcu",
+);
+
+#Create a search pattern for all these strings to speed up a loop below
+our $deprecated_apis_search = "";
+foreach my $entry (keys %deprecated_apis) {
+	$deprecated_apis_search .= '|' if ($deprecated_apis_search ne "");
+	$deprecated_apis_search .= $entry;
+}
+$deprecated_apis_search = "(?:${deprecated_apis_search})";
+
 our $mode_perms_world_writable = qr{
 	S_IWUGO		|
 	S_IWOTH		|
@@ -6368,6 +6389,20 @@ 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;
+			my $new_api = $deprecated_apis{$deprecated_api};
+			WARN("DEPRECATED_API",
+			     "Deprecated use of '$deprecated_api', prefer '$new_api' instead\n" . $herecurr);
+		}
+
 # check for various structs that are normally const (ops, kgdb, device_tree)
 # and avoid what seem like struct definitions 'struct foo {'
 		if ($line !~ /\bconst\b/ &&