From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Tue, 27 Jan 2009 12:58:08 +0000 (+0100)
Subject: lockdep: remove macro usage from mark_held_locks()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cf2ad4d13c4ac6366c730fcf6c6be00db12fb75f;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

lockdep: remove macro usage from mark_held_locks()

Now that we have nice numerical relations for the states, remove the macro
magics.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 000d53a2da32..f40d916c191c 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -2099,14 +2099,6 @@ enum mark_type {
 #undef LOCKDEP_STATE
 };
 
-#define MARK_HELD_CASE(__STATE)						\
-	case __STATE:							\
-		if (hlock->read)					\
-			usage_bit = LOCK_ENABLED_##__STATE##_READ;	\
-		else							\
-			usage_bit = LOCK_ENABLED_##__STATE;		\
-		break;
-
 /*
  * Mark all held locks with a usage bit:
  */
@@ -2120,13 +2112,11 @@ mark_held_locks(struct task_struct *curr, enum mark_type mark)
 	for (i = 0; i < curr->lockdep_depth; i++) {
 		hlock = curr->held_locks + i;
 
-		switch (mark) {
-#define LOCKDEP_STATE(__STATE) MARK_HELD_CASE(__STATE)
-#include "lockdep_states.h"
-#undef LOCKDEP_STATE
-		default:
-			BUG();
-		}
+		usage_bit = 2 + (mark << 2); /* ENABLED */
+		if (hlock->read)
+			usage_bit += 1; /* READ */
+
+		BUG_ON(usage_bit >= LOCK_USAGE_STATES);
 
 		if (!mark_lock(curr, hlock, usage_bit))
 			return 0;