mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-30 19:26:38 +07:00
bb7bed0825
For !DEBUG_SPINLOCK && !PREEMPT && SMP the spin_unlock() functions were always inlined by using special defines which would call the __raw* functions. The out-of-line variants for these functions would be generated anyway. Use the new per unlock/locking variant mechanism to force inlining of the unlock functions like before. This is not a functional change, we just get rid of one additional way to force inlining. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Horst Hartmann <horsth@linux.vnet.ibm.com> Cc: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: David Miller <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: <linux-arch@vger.kernel.org> LKML-Reference: <20090831124418.848735034@de.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
458 lines
12 KiB
C
458 lines
12 KiB
C
#ifndef __LINUX_SPINLOCK_API_SMP_H
|
|
#define __LINUX_SPINLOCK_API_SMP_H
|
|
|
|
#ifndef __LINUX_SPINLOCK_H
|
|
# error "please don't include this file directly"
|
|
#endif
|
|
|
|
/*
|
|
* include/linux/spinlock_api_smp.h
|
|
*
|
|
* spinlock API declarations on SMP (and debug)
|
|
* (implemented in kernel/spinlock.c)
|
|
*
|
|
* portions Copyright 2005, Red Hat, Inc., Ingo Molnar
|
|
* Released under the General Public License (GPL).
|
|
*/
|
|
|
|
int in_lock_functions(unsigned long addr);
|
|
|
|
#define assert_spin_locked(x) BUG_ON(!spin_is_locked(x))
|
|
|
|
void __lockfunc _spin_lock(spinlock_t *lock) __acquires(lock);
|
|
void __lockfunc _spin_lock_nested(spinlock_t *lock, int subclass)
|
|
__acquires(lock);
|
|
void __lockfunc _spin_lock_nest_lock(spinlock_t *lock, struct lockdep_map *map)
|
|
__acquires(lock);
|
|
void __lockfunc _read_lock(rwlock_t *lock) __acquires(lock);
|
|
void __lockfunc _write_lock(rwlock_t *lock) __acquires(lock);
|
|
void __lockfunc _spin_lock_bh(spinlock_t *lock) __acquires(lock);
|
|
void __lockfunc _read_lock_bh(rwlock_t *lock) __acquires(lock);
|
|
void __lockfunc _write_lock_bh(rwlock_t *lock) __acquires(lock);
|
|
void __lockfunc _spin_lock_irq(spinlock_t *lock) __acquires(lock);
|
|
void __lockfunc _read_lock_irq(rwlock_t *lock) __acquires(lock);
|
|
void __lockfunc _write_lock_irq(rwlock_t *lock) __acquires(lock);
|
|
unsigned long __lockfunc _spin_lock_irqsave(spinlock_t *lock)
|
|
__acquires(lock);
|
|
unsigned long __lockfunc _spin_lock_irqsave_nested(spinlock_t *lock, int subclass)
|
|
__acquires(lock);
|
|
unsigned long __lockfunc _read_lock_irqsave(rwlock_t *lock)
|
|
__acquires(lock);
|
|
unsigned long __lockfunc _write_lock_irqsave(rwlock_t *lock)
|
|
__acquires(lock);
|
|
int __lockfunc _spin_trylock(spinlock_t *lock);
|
|
int __lockfunc _read_trylock(rwlock_t *lock);
|
|
int __lockfunc _write_trylock(rwlock_t *lock);
|
|
int __lockfunc _spin_trylock_bh(spinlock_t *lock);
|
|
void __lockfunc _spin_unlock(spinlock_t *lock) __releases(lock);
|
|
void __lockfunc _read_unlock(rwlock_t *lock) __releases(lock);
|
|
void __lockfunc _write_unlock(rwlock_t *lock) __releases(lock);
|
|
void __lockfunc _spin_unlock_bh(spinlock_t *lock) __releases(lock);
|
|
void __lockfunc _read_unlock_bh(rwlock_t *lock) __releases(lock);
|
|
void __lockfunc _write_unlock_bh(rwlock_t *lock) __releases(lock);
|
|
void __lockfunc _spin_unlock_irq(spinlock_t *lock) __releases(lock);
|
|
void __lockfunc _read_unlock_irq(rwlock_t *lock) __releases(lock);
|
|
void __lockfunc _write_unlock_irq(rwlock_t *lock) __releases(lock);
|
|
void __lockfunc _spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags)
|
|
__releases(lock);
|
|
void __lockfunc _read_unlock_irqrestore(rwlock_t *lock, unsigned long flags)
|
|
__releases(lock);
|
|
void __lockfunc _write_unlock_irqrestore(rwlock_t *lock, unsigned long flags)
|
|
__releases(lock);
|
|
|
|
/*
|
|
* We inline the unlock functions in the nondebug case:
|
|
*/
|
|
#if !defined(CONFIG_DEBUG_SPINLOCK) && !defined(CONFIG_PREEMPT)
|
|
#define __always_inline__spin_unlock
|
|
#define __always_inline__read_unlock
|
|
#define __always_inline__write_unlock
|
|
#define __always_inline__spin_unlock_irq
|
|
#define __always_inline__read_unlock_irq
|
|
#define __always_inline__write_unlock_irq
|
|
#endif
|
|
|
|
#ifndef CONFIG_DEBUG_SPINLOCK
|
|
#ifndef CONFIG_GENERIC_LOCKBREAK
|
|
|
|
#ifdef __always_inline__spin_lock
|
|
#define _spin_lock(lock) __spin_lock(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__read_lock
|
|
#define _read_lock(lock) __read_lock(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__write_lock
|
|
#define _write_lock(lock) __write_lock(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__spin_lock_bh
|
|
#define _spin_lock_bh(lock) __spin_lock_bh(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__read_lock_bh
|
|
#define _read_lock_bh(lock) __read_lock_bh(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__write_lock_bh
|
|
#define _write_lock_bh(lock) __write_lock_bh(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__spin_lock_irq
|
|
#define _spin_lock_irq(lock) __spin_lock_irq(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__read_lock_irq
|
|
#define _read_lock_irq(lock) __read_lock_irq(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__write_lock_irq
|
|
#define _write_lock_irq(lock) __write_lock_irq(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__spin_lock_irqsave
|
|
#define _spin_lock_irqsave(lock) __spin_lock_irqsave(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__read_lock_irqsave
|
|
#define _read_lock_irqsave(lock) __read_lock_irqsave(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__write_lock_irqsave
|
|
#define _write_lock_irqsave(lock) __write_lock_irqsave(lock)
|
|
#endif
|
|
|
|
#endif /* !CONFIG_GENERIC_LOCKBREAK */
|
|
|
|
#ifdef __always_inline__spin_trylock
|
|
#define _spin_trylock(lock) __spin_trylock(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__read_trylock
|
|
#define _read_trylock(lock) __read_trylock(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__write_trylock
|
|
#define _write_trylock(lock) __write_trylock(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__spin_trylock_bh
|
|
#define _spin_trylock_bh(lock) __spin_trylock_bh(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__spin_unlock
|
|
#define _spin_unlock(lock) __spin_unlock(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__read_unlock
|
|
#define _read_unlock(lock) __read_unlock(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__write_unlock
|
|
#define _write_unlock(lock) __write_unlock(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__spin_unlock_bh
|
|
#define _spin_unlock_bh(lock) __spin_unlock_bh(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__read_unlock_bh
|
|
#define _read_unlock_bh(lock) __read_unlock_bh(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__write_unlock_bh
|
|
#define _write_unlock_bh(lock) __write_unlock_bh(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__spin_unlock_irq
|
|
#define _spin_unlock_irq(lock) __spin_unlock_irq(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__read_unlock_irq
|
|
#define _read_unlock_irq(lock) __read_unlock_irq(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__write_unlock_irq
|
|
#define _write_unlock_irq(lock) __write_unlock_irq(lock)
|
|
#endif
|
|
|
|
#ifdef __always_inline__spin_unlock_irqrestore
|
|
#define _spin_unlock_irqrestore(lock, flags) __spin_unlock_irqrestore(lock, flags)
|
|
#endif
|
|
|
|
#ifdef __always_inline__read_unlock_irqrestore
|
|
#define _read_unlock_irqrestore(lock, flags) __read_unlock_irqrestore(lock, flags)
|
|
#endif
|
|
|
|
#ifdef __always_inline__write_unlock_irqrestore
|
|
#define _write_unlock_irqrestore(lock, flags) __write_unlock_irqrestore(lock, flags)
|
|
#endif
|
|
|
|
#endif /* CONFIG_DEBUG_SPINLOCK */
|
|
|
|
static inline int __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;
|
|
}
|
|
|
|
static inline int __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;
|
|
}
|
|
|
|
static inline int __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;
|
|
}
|
|
|
|
/*
|
|
* If lockdep is enabled then we use the non-preemption spin-ops
|
|
* even on CONFIG_PREEMPT, because lockdep assumes that interrupts are
|
|
* not re-enabled during lock-acquire (which the preempt-spin-ops do):
|
|
*/
|
|
#if !defined(CONFIG_GENERIC_LOCKBREAK) || defined(CONFIG_DEBUG_LOCK_ALLOC)
|
|
|
|
static inline void __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);
|
|
}
|
|
|
|
static inline unsigned long __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;
|
|
}
|
|
|
|
static inline void __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);
|
|
}
|
|
|
|
static inline void __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);
|
|
}
|
|
|
|
static inline unsigned long __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;
|
|
}
|
|
|
|
static inline void __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);
|
|
}
|
|
|
|
static inline void __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);
|
|
}
|
|
|
|
static inline unsigned long __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;
|
|
}
|
|
|
|
static inline void __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);
|
|
}
|
|
|
|
static inline void __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);
|
|
}
|
|
|
|
static inline void __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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
#endif /* CONFIG_PREEMPT */
|
|
|
|
static inline void __spin_unlock(spinlock_t *lock)
|
|
{
|
|
spin_release(&lock->dep_map, 1, _RET_IP_);
|
|
_raw_spin_unlock(lock);
|
|
preempt_enable();
|
|
}
|
|
|
|
static inline void __write_unlock(rwlock_t *lock)
|
|
{
|
|
rwlock_release(&lock->dep_map, 1, _RET_IP_);
|
|
_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);
|
|
preempt_enable();
|
|
}
|
|
|
|
static inline void __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();
|
|
}
|
|
|
|
static inline void __spin_unlock_irq(spinlock_t *lock)
|
|
{
|
|
spin_release(&lock->dep_map, 1, _RET_IP_);
|
|
_raw_spin_unlock(lock);
|
|
local_irq_enable();
|
|
preempt_enable();
|
|
}
|
|
|
|
static inline void __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));
|
|
}
|
|
|
|
static inline void __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();
|
|
}
|
|
|
|
static inline void __read_unlock_irq(rwlock_t *lock)
|
|
{
|
|
rwlock_release(&lock->dep_map, 1, _RET_IP_);
|
|
_raw_read_unlock(lock);
|
|
local_irq_enable();
|
|
preempt_enable();
|
|
}
|
|
|
|
static inline void __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));
|
|
}
|
|
|
|
static inline void __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();
|
|
}
|
|
|
|
static inline void __write_unlock_irq(rwlock_t *lock)
|
|
{
|
|
rwlock_release(&lock->dep_map, 1, _RET_IP_);
|
|
_raw_write_unlock(lock);
|
|
local_irq_enable();
|
|
preempt_enable();
|
|
}
|
|
|
|
static inline void __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));
|
|
}
|
|
|
|
static inline int __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;
|
|
}
|
|
|
|
#endif /* __LINUX_SPINLOCK_API_SMP_H */
|