KVM: Drop useless atomic test from timer function

[safe/jmp/linux-2.6] / kernel / lockdep.c

diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index b0f0118..8bbeef9 100644 (file)
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -42,12 +42,14 @@
 #include <linux/hash.h>
 #include <linux/ftrace.h>
 #include <linux/stringify.h>
-#include <trace/lockdep.h>
 
 #include <asm/sections.h>
 
 #include "lockdep_internals.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/lockdep.h>
+
 #ifdef CONFIG_PROVE_LOCKING
 int prove_locking = 1;
 module_param(prove_locking, int, 0644);
@@ -2490,13 +2492,20 @@ static int mark_lock(struct task_struct *curr, struct held_lock *this,
 void lockdep_init_map(struct lockdep_map *lock, const char *name,
                      struct lock_class_key *key, int subclass)
 {
-       if (unlikely(!debug_locks))
+       lock->class_cache = NULL;
+#ifdef CONFIG_LOCK_STAT
+       lock->cpu = raw_smp_processor_id();
+#endif
+
+       if (DEBUG_LOCKS_WARN_ON(!name)) {
+               lock->name = "NULL";
                return;
+       }
+
+       lock->name = name;
 
        if (DEBUG_LOCKS_WARN_ON(!key))
                return;
-       if (DEBUG_LOCKS_WARN_ON(!name))
-               return;
        /*
         * Sanity check, the lock-class key must be persistent:
         */
@@ -2505,12 +2514,11 @@ void lockdep_init_map(struct lockdep_map *lock, const char *name,
                DEBUG_LOCKS_WARN_ON(1);
                return;
        }
-       lock->name = name;
        lock->key = key;
-       lock->class_cache = NULL;
-#ifdef CONFIG_LOCK_STAT
-       lock->cpu = raw_smp_processor_id();
-#endif
+
+       if (unlikely(!debug_locks))
+               return;
+
        if (subclass)
                register_lock_class(lock, subclass, 1);
 }
@@ -2929,8 +2937,6 @@ void lock_set_class(struct lockdep_map *lock, const char *name,
 }
 EXPORT_SYMBOL_GPL(lock_set_class);
 
-DEFINE_TRACE(lock_acquire);
-
 /*
  * We are not always called with irqs disabled - do that here,
  * and also avoid lockdep recursion:
@@ -2957,8 +2963,6 @@ void lock_acquire(struct lockdep_map *lock, unsigned int subclass,
 }
 EXPORT_SYMBOL_GPL(lock_acquire);
 
-DEFINE_TRACE(lock_release);
-
 void lock_release(struct lockdep_map *lock, int nested,
                          unsigned long ip)
 {
@@ -3099,6 +3103,8 @@ found_it:
                hlock->holdtime_stamp = now;
        }
 
+       trace_lock_acquired(lock, ip, waittime);
+
        stats = get_lock_stats(hlock_class(hlock));
        if (waittime) {
                if (hlock->read)
@@ -3114,8 +3120,6 @@ found_it:
        lock->ip = ip;
 }
 
-DEFINE_TRACE(lock_contended);
-
 void lock_contended(struct lockdep_map *lock, unsigned long ip)
 {
        unsigned long flags;
@@ -3137,14 +3141,10 @@ void lock_contended(struct lockdep_map *lock, unsigned long ip)
 }
 EXPORT_SYMBOL_GPL(lock_contended);
 
-DEFINE_TRACE(lock_acquired);
-
 void lock_acquired(struct lockdep_map *lock, unsigned long ip)
 {
        unsigned long flags;
 
-       trace_lock_acquired(lock, ip);
-
        if (unlikely(!lock_stat))
                return;