[patch 10/23] locking: Further name space cleanups

From: Thomas Gleixner
Date: Sun Dec 06 2009 - 13:04:04 EST

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Next in thread: Thomas Gleixner: "[patch 16/23] sched: Convert cpupri lock to raw_spinlock"
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The name space hierarchy for the internal lock functions is now a bit
backwards. raw_spin* functions map to _spin* which use __spin*, while
we would like to have _raw_spin* and __raw_spin*.

_raw_spin* is already used by lock debugging, so rename those funtions
to do_raw_spin* to free up the _raw_spin* name space.

Nu functional change.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
include/linux/rwlock.h | 32 +++++++++++++++----------------
include/linux/rwlock_api_smp.h | 40 +++++++++++++++++++--------------------
include/linux/spinlock.h | 20 +++++++++----------
include/linux/spinlock_api_smp.h | 24 +++++++++++------------
kernel/sched.c | 2 -
kernel/spinlock.c | 12 +++++------
lib/spinlock_debug.c | 6 ++---
7 files changed, 68 insertions(+), 68 deletions(-)

Index: linux-2.6-tip/include/linux/rwlock.h
===================================================================
--- linux-2.6-tip.orig/include/linux/rwlock.h
+++ linux-2.6-tip/include/linux/rwlock.h
@@ -31,25 +31,25 @@ do { \
#endif

#ifdef CONFIG_DEBUG_SPINLOCK
- extern void _raw_read_lock(rwlock_t *lock);
-#define _raw_read_lock_flags(lock, flags) _raw_read_lock(lock)
- extern int _raw_read_trylock(rwlock_t *lock);
- extern void _raw_read_unlock(rwlock_t *lock);
- extern void _raw_write_lock(rwlock_t *lock);
-#define _raw_write_lock_flags(lock, flags) _raw_write_lock(lock)
- extern int _raw_write_trylock(rwlock_t *lock);
- extern void _raw_write_unlock(rwlock_t *lock);
+ extern void do_raw_read_lock(rwlock_t *lock);
+#define do_raw_read_lock_flags(lock, flags) do_raw_read_lock(lock)
+ extern int do_raw_read_trylock(rwlock_t *lock);
+ extern void do_raw_read_unlock(rwlock_t *lock);
+ extern void do_raw_write_lock(rwlock_t *lock);
+#define do_raw_write_lock_flags(lock, flags) do_raw_write_lock(lock)
+ extern int do_raw_write_trylock(rwlock_t *lock);
+ extern void do_raw_write_unlock(rwlock_t *lock);
#else
-# define _raw_read_lock(rwlock) arch_read_lock(&(rwlock)->raw_lock)
-# define _raw_read_lock_flags(lock, flags) \
+# define do_raw_read_lock(rwlock) arch_read_lock(&(rwlock)->raw_lock)
+# define do_raw_read_lock_flags(lock, flags) \
arch_read_lock_flags(&(lock)->raw_lock, *(flags))
-# define _raw_read_trylock(rwlock) arch_read_trylock(&(rwlock)->raw_lock)
-# define _raw_read_unlock(rwlock) arch_read_unlock(&(rwlock)->raw_lock)
-# define _raw_write_lock(rwlock) arch_write_lock(&(rwlock)->raw_lock)
-# define _raw_write_lock_flags(lock, flags) \
+# define do_raw_read_trylock(rwlock) arch_read_trylock(&(rwlock)->raw_lock)
+# define do_raw_read_unlock(rwlock) arch_read_unlock(&(rwlock)->raw_lock)
+# define do_raw_write_lock(rwlock) arch_write_lock(&(rwlock)->raw_lock)
+# define do_raw_write_lock_flags(lock, flags) \
arch_write_lock_flags(&(lock)->raw_lock, *(flags))
-# define _raw_write_trylock(rwlock) arch_write_trylock(&(rwlock)->raw_lock)
-# define _raw_write_unlock(rwlock) arch_write_unlock(&(rwlock)->raw_lock)
+# define do_raw_write_trylock(rwlock) arch_write_trylock(&(rwlock)->raw_lock)
+# define do_raw_write_unlock(rwlock) arch_write_unlock(&(rwlock)->raw_lock)
#endif

#define read_can_lock(rwlock) arch_read_can_lock(&(rwlock)->raw_lock)
Index: linux-2.6-tip/include/linux/rwlock_api_smp.h
===================================================================
--- linux-2.6-tip.orig/include/linux/rwlock_api_smp.h
+++ linux-2.6-tip/include/linux/rwlock_api_smp.h
@@ -113,7 +113,7 @@ void __lockfunc _write_unlock_irqrestore
static inline int __read_trylock(rwlock_t *lock)
{
preempt_disable();
- if (_raw_read_trylock(lock)) {
+ if (do_raw_read_trylock(lock)) {
rwlock_acquire_read(&lock->dep_map, 0, 1, _RET_IP_);
return 1;
}
@@ -124,7 +124,7 @@ static inline int __read_trylock(rwlock_
static inline int __write_trylock(rwlock_t *lock)
{
preempt_disable();
- if (_raw_write_trylock(lock)) {
+ if (do_raw_write_trylock(lock)) {
rwlock_acquire(&lock->dep_map, 0, 1, _RET_IP_);
return 1;
}
@@ -143,7 +143,7 @@ static inline void __read_lock(rwlock_t
{
preempt_disable();
rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);
- LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock);
+ LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock);
}

static inline unsigned long __read_lock_irqsave(rwlock_t *lock)
@@ -153,8 +153,8 @@ static inline unsigned long __read_lock_
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);
+ LOCK_CONTENDED_FLAGS(lock, do_raw_read_trylock, do_raw_read_lock,
+ do_raw_read_lock_flags, &flags);
return flags;
}

@@ -163,7 +163,7 @@ static inline void __read_lock_irq(rwloc
local_irq_disable();
preempt_disable();
rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);
- LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock);
+ LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock);
}

static inline void __read_lock_bh(rwlock_t *lock)
@@ -171,7 +171,7 @@ static inline void __read_lock_bh(rwlock
local_bh_disable();
preempt_disable();
rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);
- LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock);
+ LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock);
}

static inline unsigned long __write_lock_irqsave(rwlock_t *lock)
@@ -181,8 +181,8 @@ static inline unsigned long __write_lock
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);
+ LOCK_CONTENDED_FLAGS(lock, do_raw_write_trylock, do_raw_write_lock,
+ do_raw_write_lock_flags, &flags);
return flags;
}

@@ -191,7 +191,7 @@ static inline void __write_lock_irq(rwlo
local_irq_disable();
preempt_disable();
rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);
- LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock);
+ LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock);
}

static inline void __write_lock_bh(rwlock_t *lock)
@@ -199,14 +199,14 @@ static inline void __write_lock_bh(rwloc
local_bh_disable();
preempt_disable();
rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);
- LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock);
+ LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock);
}

static inline void __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);
+ LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock);
}

#endif /* CONFIG_PREEMPT */
@@ -214,21 +214,21 @@ static inline void __write_lock(rwlock_t
static inline void __write_unlock(rwlock_t *lock)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
- _raw_write_unlock(lock);
+ do_raw_write_unlock(lock);
preempt_enable();
}

static inline void __read_unlock(rwlock_t *lock)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
- _raw_read_unlock(lock);
+ do_raw_read_unlock(lock);
preempt_enable();
}

static inline void __read_unlock_irqrestore(rwlock_t *lock, unsigned long flags)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
- _raw_read_unlock(lock);
+ do_raw_read_unlock(lock);
local_irq_restore(flags);
preempt_enable();
}
@@ -236,7 +236,7 @@ static inline void __read_unlock_irqrest
static inline void __read_unlock_irq(rwlock_t *lock)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
- _raw_read_unlock(lock);
+ do_raw_read_unlock(lock);
local_irq_enable();
preempt_enable();
}
@@ -244,7 +244,7 @@ static inline void __read_unlock_irq(rwl
static inline void __read_unlock_bh(rwlock_t *lock)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
- _raw_read_unlock(lock);
+ do_raw_read_unlock(lock);
preempt_enable_no_resched();
local_bh_enable_ip((unsigned long)__builtin_return_address(0));
}
@@ -253,7 +253,7 @@ static inline void __write_unlock_irqres
unsigned long flags)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
- _raw_write_unlock(lock);
+ do_raw_write_unlock(lock);
local_irq_restore(flags);
preempt_enable();
}
@@ -261,7 +261,7 @@ static inline void __write_unlock_irqres
static inline void __write_unlock_irq(rwlock_t *lock)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
- _raw_write_unlock(lock);
+ do_raw_write_unlock(lock);
local_irq_enable();
preempt_enable();
}
@@ -269,7 +269,7 @@ static inline void __write_unlock_irq(rw
static inline void __write_unlock_bh(rwlock_t *lock)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
- _raw_write_unlock(lock);
+ do_raw_write_unlock(lock);
preempt_enable_no_resched();
local_bh_enable_ip((unsigned long)__builtin_return_address(0));
}
Index: linux-2.6-tip/include/linux/spinlock.h
===================================================================
--- linux-2.6-tip.orig/include/linux/spinlock.h
+++ linux-2.6-tip/include/linux/spinlock.h
@@ -89,13 +89,13 @@
#endif

#ifdef CONFIG_DEBUG_SPINLOCK
- extern void __raw_spin_lock_init(raw_spinlock_t *lock, const char *name,
+ extern void _do_raw_spin_lock_init(raw_spinlock_t *lock, const char *name,
struct lock_class_key *key);
# define raw_spin_lock_init(lock) \
do { \
static struct lock_class_key __key; \
\
- __raw_spin_lock_init((lock), #lock, &__key); \
+ _do_raw_spin_lock_init((lock), #lock, &__key); \
} while (0)

#else
@@ -128,28 +128,28 @@ static inline void smp_mb__after_lock(vo
#define raw_spin_unlock_wait(lock) arch_spin_unlock_wait(&(lock)->raw_lock)

#ifdef CONFIG_DEBUG_SPINLOCK
- extern void _raw_spin_lock(raw_spinlock_t *lock);
-#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock)
- extern int _raw_spin_trylock(raw_spinlock_t *lock);
- extern void _raw_spin_unlock(raw_spinlock_t *lock);
+ extern void do_raw_spin_lock(raw_spinlock_t *lock);
+#define do_raw_spin_lock_flags(lock, flags) do_raw_spin_lock(lock)
+ extern int do_raw_spin_trylock(raw_spinlock_t *lock);
+ extern void do_raw_spin_unlock(raw_spinlock_t *lock);
#else
-static inline void _raw_spin_lock(raw_spinlock_t *lock)
+static inline void do_raw_spin_lock(raw_spinlock_t *lock)
{
arch_spin_lock(&lock->raw_lock);
}

static inline void
-_raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long *flags)
+do_raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long *flags)
{
arch_spin_lock_flags(&lock->raw_lock, *flags);
}

-static inline int _raw_spin_trylock(raw_spinlock_t *lock)
+static inline int do_raw_spin_trylock(raw_spinlock_t *lock)
{
return arch_spin_trylock(&(lock)->raw_lock);
}

-static inline void _raw_spin_unlock(raw_spinlock_t *lock)
+static inline void do_raw_spin_unlock(raw_spinlock_t *lock)
{
arch_spin_unlock(&lock->raw_lock);
}
Index: linux-2.6-tip/include/linux/spinlock_api_smp.h
===================================================================
--- linux-2.6-tip.orig/include/linux/spinlock_api_smp.h
+++ linux-2.6-tip/include/linux/spinlock_api_smp.h
@@ -85,7 +85,7 @@ _spin_unlock_irqrestore(raw_spinlock_t *
static inline int __spin_trylock(raw_spinlock_t *lock)
{
preempt_disable();
- if (_raw_spin_trylock(lock)) {
+ if (do_raw_spin_trylock(lock)) {
spin_acquire(&lock->dep_map, 0, 1, _RET_IP_);
return 1;
}
@@ -109,13 +109,13 @@ static inline unsigned long __spin_lock_
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
+ * do_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);
+ LOCK_CONTENDED(lock, do_raw_spin_trylock, do_raw_spin_lock);
#else
- _raw_spin_lock_flags(lock, &flags);
+ do_raw_spin_lock_flags(lock, &flags);
#endif
return flags;
}
@@ -125,7 +125,7 @@ static inline void __spin_lock_irq(raw_s
local_irq_disable();
preempt_disable();
spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
- LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock);
+ LOCK_CONTENDED(lock, do_raw_spin_trylock, do_raw_spin_lock);
}

static inline void __spin_lock_bh(raw_spinlock_t *lock)
@@ -133,14 +133,14 @@ static inline void __spin_lock_bh(raw_sp
local_bh_disable();
preempt_disable();
spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
- LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock);
+ LOCK_CONTENDED(lock, do_raw_spin_trylock, do_raw_spin_lock);
}

static inline void __spin_lock(raw_spinlock_t *lock)
{
preempt_disable();
spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
- LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock);
+ LOCK_CONTENDED(lock, do_raw_spin_trylock, do_raw_spin_lock);
}

#endif /* CONFIG_PREEMPT */
@@ -148,7 +148,7 @@ static inline void __spin_lock(raw_spinl
static inline void __spin_unlock(raw_spinlock_t *lock)
{
spin_release(&lock->dep_map, 1, _RET_IP_);
- _raw_spin_unlock(lock);
+ do_raw_spin_unlock(lock);
preempt_enable();
}

@@ -156,7 +156,7 @@ static inline void __spin_unlock_irqrest
unsigned long flags)
{
spin_release(&lock->dep_map, 1, _RET_IP_);
- _raw_spin_unlock(lock);
+ do_raw_spin_unlock(lock);
local_irq_restore(flags);
preempt_enable();
}
@@ -164,7 +164,7 @@ static inline void __spin_unlock_irqrest
static inline void __spin_unlock_irq(raw_spinlock_t *lock)
{
spin_release(&lock->dep_map, 1, _RET_IP_);
- _raw_spin_unlock(lock);
+ do_raw_spin_unlock(lock);
local_irq_enable();
preempt_enable();
}
@@ -172,7 +172,7 @@ static inline void __spin_unlock_irq(raw
static inline void __spin_unlock_bh(raw_spinlock_t *lock)
{
spin_release(&lock->dep_map, 1, _RET_IP_);
- _raw_spin_unlock(lock);
+ do_raw_spin_unlock(lock);
preempt_enable_no_resched();
local_bh_enable_ip((unsigned long)__builtin_return_address(0));
}
@@ -181,7 +181,7 @@ static inline int __spin_trylock_bh(raw_
{
local_bh_disable();
preempt_disable();
- if (_raw_spin_trylock(lock)) {
+ if (do_raw_spin_trylock(lock)) {
spin_acquire(&lock->dep_map, 0, 1, _RET_IP_);
return 1;
}
Index: linux-2.6-tip/kernel/sched.c
===================================================================
--- linux-2.6-tip.orig/kernel/sched.c
+++ linux-2.6-tip/kernel/sched.c
@@ -6703,7 +6703,7 @@ SYSCALL_DEFINE0(sched_yield)
*/
__release(rq->lock);
spin_release(&rq->lock.dep_map, 1, _THIS_IP_);
- _raw_spin_unlock(&rq->lock);
+ do_raw_spin_unlock(&rq->lock);
preempt_enable_no_resched();

schedule();
Index: linux-2.6-tip/kernel/spinlock.c
===================================================================
--- linux-2.6-tip.orig/kernel/spinlock.c
+++ linux-2.6-tip/kernel/spinlock.c
@@ -48,7 +48,7 @@ void __lockfunc __##op##_lock(locktype##
{ \
for (;;) { \
preempt_disable(); \
- if (likely(_raw_##op##_trylock(lock))) \
+ if (likely(do_raw_##op##_trylock(lock))) \
break; \
preempt_enable(); \
\
@@ -67,7 +67,7 @@ unsigned long __lockfunc __##op##_lock_i
for (;;) { \
preempt_disable(); \
local_irq_save(flags); \
- if (likely(_raw_##op##_trylock(lock))) \
+ if (likely(do_raw_##op##_trylock(lock))) \
break; \
local_irq_restore(flags); \
preempt_enable(); \
@@ -345,7 +345,7 @@ void __lockfunc _spin_lock_nested(raw_sp
{
preempt_disable();
spin_acquire(&lock->dep_map, subclass, 0, _RET_IP_);
- LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock);
+ LOCK_CONTENDED(lock, do_raw_spin_trylock, do_raw_spin_lock);
}
EXPORT_SYMBOL(_spin_lock_nested);

@@ -357,8 +357,8 @@ unsigned long __lockfunc _spin_lock_irqs
local_irq_save(flags);
preempt_disable();
spin_acquire(&lock->dep_map, subclass, 0, _RET_IP_);
- LOCK_CONTENDED_FLAGS(lock, _raw_spin_trylock, _raw_spin_lock,
- _raw_spin_lock_flags, &flags);
+ LOCK_CONTENDED_FLAGS(lock, do_raw_spin_trylock, do_raw_spin_lock,
+ do_raw_spin_lock_flags, &flags);
return flags;
}
EXPORT_SYMBOL(_spin_lock_irqsave_nested);
@@ -368,7 +368,7 @@ void __lockfunc _spin_lock_nest_lock(raw
{
preempt_disable();
spin_acquire_nest(&lock->dep_map, 0, 0, nest_lock, _RET_IP_);
- LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock);
+ LOCK_CONTENDED(lock, do_raw_spin_trylock, do_raw_spin_lock);
}
EXPORT_SYMBOL(_spin_lock_nest_lock);

Index: linux-2.6-tip/lib/spinlock_debug.c
===================================================================
--- linux-2.6-tip.orig/lib/spinlock_debug.c
+++ linux-2.6-tip/lib/spinlock_debug.c
@@ -193,13 +193,13 @@ static void __read_lock_debug(rwlock_t *
}
#endif

-void _raw_read_lock(rwlock_t *lock)
+void do_raw_read_lock(rwlock_t *lock)
{
RWLOCK_BUG_ON(lock->magic != RWLOCK_MAGIC, lock, "bad magic");
arch_read_lock(&lock->raw_lock);
}

-int _raw_read_trylock(rwlock_t *lock)
+int do_raw_read_trylock(rwlock_t *lock)
{
int ret = arch_read_trylock(&lock->raw_lock);

@@ -212,7 +212,7 @@ int _raw_read_trylock(rwlock_t *lock)
return ret;
}

-void _raw_read_unlock(rwlock_t *lock)
+void do_raw_read_unlock(rwlock_t *lock)
{
RWLOCK_BUG_ON(lock->magic != RWLOCK_MAGIC, lock, "bad magic");
arch_read_unlock(&lock->raw_lock);

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Next message: Thomas Gleixner: "[patch 16/23] sched: Convert cpupri lock to raw_spinlock"
Previous message: Thomas Gleixner: "[patch 11/23] locking: Cleanup the name space completely"
In reply to: Thomas Gleixner: "[patch 11/23] locking: Cleanup the name space completely"
Next in thread: Thomas Gleixner: "[patch 16/23] sched: Convert cpupri lock to raw_spinlock"
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