Merge branch 'linus' into tracing/core

Merge reason: Pick up kernel/softirq.c update for dependent fix.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 84 insertions, 146 deletions

diff --git a/kernel/spinlock.c b/kernel/spinlock.c
index 7932653c4eb..5ddab730cb2 100644
--- a/kernel/spinlock.c
+++ b/kernel/spinlock.c
@@ -21,44 +21,29 @@
 #include <linux/debug_locks.h>
 #include <linux/module.h>
 
+#ifndef _spin_trylock
 int __lockfunc _spin_trylock(spinlock_t *lock)
 {
-        preempt_disable();
-        if (_raw_spin_trylock(lock)) {
-                spin_acquire(&lock->dep_map, 0, 1, _RET_IP_);
-                return 1;
-        }
-        
-        preempt_enable();
-        return 0;
+        return __spin_trylock(lock);
 }
 EXPORT_SYMBOL(_spin_trylock);
+#endif
 
+#ifndef _read_trylock
 int __lockfunc _read_trylock(rwlock_t *lock)
 {
-        preempt_disable();
-        if (_raw_read_trylock(lock)) {
-                rwlock_acquire_read(&lock->dep_map, 0, 1, _RET_IP_);
-                return 1;
-        }
-
-        preempt_enable();
-        return 0;
+        return __read_trylock(lock);
 }
 EXPORT_SYMBOL(_read_trylock);
+#endif
 
+#ifndef _write_trylock
 int __lockfunc _write_trylock(rwlock_t *lock)
 {
-        preempt_disable();
-        if (_raw_write_trylock(lock)) {
-                rwlock_acquire(&lock->dep_map, 0, 1, _RET_IP_);
-                return 1;
-        }
-
-        preempt_enable();
-        return 0;
+        return __write_trylock(lock);
 }
 EXPORT_SYMBOL(_write_trylock);
+#endif
 
 /*
  * If lockdep is enabled then we use the non-preemption spin-ops
@@ -67,132 +52,101 @@ EXPORT_SYMBOL(_write_trylock);
  */
 #if !defined(CONFIG_GENERIC_LOCKBREAK) || defined(CONFIG_DEBUG_LOCK_ALLOC)
 
+#ifndef _read_lock
 void __lockfunc _read_lock(rwlock_t *lock)
 {
-        preempt_disable();
-        rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);
-        LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock);
+        __read_lock(lock);
 }
 EXPORT_SYMBOL(_read_lock);
+#endif
 
+#ifndef _spin_lock_irqsave
 unsigned long __lockfunc _spin_lock_irqsave(spinlock_t *lock)
 {
-        unsigned long flags;
-
-        local_irq_save(flags);
-        preempt_disable();
-        spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
-        /*
-         * On lockdep we dont want the hand-coded irq-enable of
-         * _raw_spin_lock_flags() code, because lockdep assumes
-         * that interrupts are not re-enabled during lock-acquire:
-         */
-#ifdef CONFIG_LOCKDEP
-        LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock);
-#else
-        _raw_spin_lock_flags(lock, &flags);
-#endif
-        return flags;
+        return __spin_lock_irqsave(lock);
 }
 EXPORT_SYMBOL(_spin_lock_irqsave);
+#endif
 
+#ifndef _spin_lock_irq
 void __lockfunc _spin_lock_irq(spinlock_t *lock)
 {
-        local_irq_disable();
-        preempt_disable();
-        spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
-        LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock);
+        __spin_lock_irq(lock);
 }
 EXPORT_SYMBOL(_spin_lock_irq);
+#endif
 
+#ifndef _spin_lock_bh
 void __lockfunc _spin_lock_bh(spinlock_t *lock)
 {
-        local_bh_disable();
-        preempt_disable();
-        spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
-        LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock);
+        __spin_lock_bh(lock);
 }
 EXPORT_SYMBOL(_spin_lock_bh);
+#endif
 
+#ifndef _read_lock_irqsave
 unsigned long __lockfunc _read_lock_irqsave(rwlock_t *lock)
 {
-        unsigned long flags;
-
-        local_irq_save(flags);
-        preempt_disable();
-        rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);
-        LOCK_CONTENDED_FLAGS(lock, _raw_read_trylock, _raw_read_lock,
-                             _raw_read_lock_flags, &flags);
-        return flags;
+        return __read_lock_irqsave(lock);
 }
 EXPORT_SYMBOL(_read_lock_irqsave);
+#endif
 
+#ifndef _read_lock_irq
 void __lockfunc _read_lock_irq(rwlock_t *lock)
 {
-        local_irq_disable();
-        preempt_disable();
-        rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);
-        LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock);
+        __read_lock_irq(lock);
 }
 EXPORT_SYMBOL(_read_lock_irq);
+#endif
 
+#ifndef _read_lock_bh
 void __lockfunc _read_lock_bh(rwlock_t *lock)
 {
-        local_bh_disable();
-        preempt_disable();
-        rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);
-        LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock);
+        __read_lock_bh(lock);
 }
 EXPORT_SYMBOL(_read_lock_bh);
+#endif
 
+#ifndef _write_lock_irqsave
 unsigned long __lockfunc _write_lock_irqsave(rwlock_t *lock)
 {
-        unsigned long flags;
-
-        local_irq_save(flags);
-        preempt_disable();
-        rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);
-        LOCK_CONTENDED_FLAGS(lock, _raw_write_trylock, _raw_write_lock,
-                             _raw_write_lock_flags, &flags);
-        return flags;
+        return __write_lock_irqsave(lock);
 }
 EXPORT_SYMBOL(_write_lock_irqsave);
+#endif
 
+#ifndef _write_lock_irq
 void __lockfunc _write_lock_irq(rwlock_t *lock)
 {
-        local_irq_disable();
-        preempt_disable();
-        rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);
-        LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock);
+        __write_lock_irq(lock);
 }
 EXPORT_SYMBOL(_write_lock_irq);
+#endif
 
+#ifndef _write_lock_bh
 void __lockfunc _write_lock_bh(rwlock_t *lock)
 {
-        local_bh_disable();
-        preempt_disable();
-        rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);
-        LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock);
+        __write_lock_bh(lock);
 }
 EXPORT_SYMBOL(_write_lock_bh);
+#endif
 
+#ifndef _spin_lock
 void __lockfunc _spin_lock(spinlock_t *lock)
 {
-        preempt_disable();
-        spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
-        LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock);
+        __spin_lock(lock);
 }
-
 EXPORT_SYMBOL(_spin_lock);
+#endif
 
+#ifndef _write_lock
 void __lockfunc _write_lock(rwlock_t *lock)
 {
-        preempt_disable();
-        rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);
-        LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock);
+        __write_lock(lock);
 }
-
 EXPORT_SYMBOL(_write_lock);
+#endif
 
 #else /* CONFIG_PREEMPT: */
 
@@ -318,125 +272,109 @@ EXPORT_SYMBOL(_spin_lock_nest_lock);
 
 #endif
 
+#ifndef _spin_unlock
 void __lockfunc _spin_unlock(spinlock_t *lock)
 {
-        spin_release(&lock->dep_map, 1, _RET_IP_);
-        _raw_spin_unlock(lock);
-        preempt_enable();
+        __spin_unlock(lock);
 }
 EXPORT_SYMBOL(_spin_unlock);
+#endif
 
+#ifndef _write_unlock
 void __lockfunc _write_unlock(rwlock_t *lock)
 {
-        rwlock_release(&lock->dep_map, 1, _RET_IP_);
-        _raw_write_unlock(lock);
-        preempt_enable();
+        __write_unlock(lock);
 }
 EXPORT_SYMBOL(_write_unlock);
+#endif
 
+#ifndef _read_unlock
 void __lockfunc _read_unlock(rwlock_t *lock)
 {
-        rwlock_release(&lock->dep_map, 1, _RET_IP_);
-        _raw_read_unlock(lock);
-        preempt_enable();
+        __read_unlock(lock);
 }
 EXPORT_SYMBOL(_read_unlock);
+#endif
 
+#ifndef _spin_unlock_irqrestore
 void __lockfunc _spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags)
 {
-        spin_release(&lock->dep_map, 1, _RET_IP_);
-        _raw_spin_unlock(lock);
-        local_irq_restore(flags);
-        preempt_enable();
+        __spin_unlock_irqrestore(lock, flags);
 }
 EXPORT_SYMBOL(_spin_unlock_irqrestore);
+#endif
 
+#ifndef _spin_unlock_irq
 void __lockfunc _spin_unlock_irq(spinlock_t *lock)
 {
-        spin_release(&lock->dep_map, 1, _RET_IP_);
-        _raw_spin_unlock(lock);
-        local_irq_enable();
-        preempt_enable();
+        __spin_unlock_irq(lock);
 }
 EXPORT_SYMBOL(_spin_unlock_irq);
+#endif
 
+#ifndef _spin_unlock_bh
 void __lockfunc _spin_unlock_bh(spinlock_t *lock)
 {
-        spin_release(&lock->dep_map, 1, _RET_IP_);
-        _raw_spin_unlock(lock);
-        preempt_enable_no_resched();
-        local_bh_enable_ip((unsigned long)__builtin_return_address(0));
+        __spin_unlock_bh(lock);
 }
 EXPORT_SYMBOL(_spin_unlock_bh);
+#endif
 
+#ifndef _read_unlock_irqrestore
 void __lockfunc _read_unlock_irqrestore(rwlock_t *lock, unsigned long flags)
 {
-        rwlock_release(&lock->dep_map, 1, _RET_IP_);
-        _raw_read_unlock(lock);
-        local_irq_restore(flags);
-        preempt_enable();
+        __read_unlock_irqrestore(lock, flags);
 }
 EXPORT_SYMBOL(_read_unlock_irqrestore);
+#endif
 
+#ifndef _read_unlock_irq
 void __lockfunc _read_unlock_irq(rwlock_t *lock)
 {
-        rwlock_release(&lock->dep_map, 1, _RET_IP_);
-        _raw_read_unlock(lock);
-        local_irq_enable();
-        preempt_enable();
+        __read_unlock_irq(lock);
 }
 EXPORT_SYMBOL(_read_unlock_irq);
+#endif
 
+#ifndef _read_unlock_bh
 void __lockfunc _read_unlock_bh(rwlock_t *lock)
 {
-        rwlock_release(&lock->dep_map, 1, _RET_IP_);
-        _raw_read_unlock(lock);
-        preempt_enable_no_resched();
-        local_bh_enable_ip((unsigned long)__builtin_return_address(0));
+        __read_unlock_bh(lock);
 }
 EXPORT_SYMBOL(_read_unlock_bh);
+#endif
 
+#ifndef _write_unlock_irqrestore
 void __lockfunc _write_unlock_irqrestore(rwlock_t *lock, unsigned long flags)
 {
-        rwlock_release(&lock->dep_map, 1, _RET_IP_);
-        _raw_write_unlock(lock);
-        local_irq_restore(flags);
-        preempt_enable();
+        __write_unlock_irqrestore(lock, flags);
 }
 EXPORT_SYMBOL(_write_unlock_irqrestore);
+#endif
 
+#ifndef _write_unlock_irq
 void __lockfunc _write_unlock_irq(rwlock_t *lock)
 {
-        rwlock_release(&lock->dep_map, 1, _RET_IP_);
-        _raw_write_unlock(lock);
-        local_irq_enable();
-        preempt_enable();
+        __write_unlock_irq(lock);
 }
 EXPORT_SYMBOL(_write_unlock_irq);
+#endif
 
+#ifndef _write_unlock_bh
 void __lockfunc _write_unlock_bh(rwlock_t *lock)
 {
-        rwlock_release(&lock->dep_map, 1, _RET_IP_);
-        _raw_write_unlock(lock);
-        preempt_enable_no_resched();
-        local_bh_enable_ip((unsigned long)__builtin_return_address(0));
+        __write_unlock_bh(lock);
 }
 EXPORT_SYMBOL(_write_unlock_bh);
+#endif
 
+#ifndef _spin_trylock_bh
 int __lockfunc _spin_trylock_bh(spinlock_t *lock)
 {
-        local_bh_disable();
-        preempt_disable();
-        if (_raw_spin_trylock(lock)) {
-                spin_acquire(&lock->dep_map, 0, 1, _RET_IP_);
-                return 1;
-        }
-
-        preempt_enable_no_resched();
-        local_bh_enable_ip((unsigned long)__builtin_return_address(0));
-        return 0;
+        return __spin_trylock_bh(lock);
 }
 EXPORT_SYMBOL(_spin_trylock_bh);
+#endif
 
 notrace int in_lock_functions(unsigned long addr)
 {