spinlock_32.h File Reference

#include <asm/psr.h>
#include <asm/processor.h>

Go to the source code of this file.

Macros
#define	arch_spin_is_locked(lock)   (*((volatile unsigned char *)(lock)) != 0)
#define	arch_spin_unlock_wait(lock)   do { while (arch_spin_is_locked(lock)) cpu_relax(); } while (0)
#define	arch_read_lock(lock)
#define	arch_read_unlock(lock)
#define	arch_read_trylock(lock)
#define	arch_spin_lock_flags(lock, flags)   arch_spin_lock(lock)
#define	arch_read_lock_flags(rw, flags)   arch_read_lock(rw)
#define	arch_write_lock_flags(rw, flags)   arch_write_lock(rw)
#define	arch_spin_relax(lock)   cpu_relax()
#define	arch_read_relax(lock)   cpu_relax()
#define	arch_write_relax(lock)   cpu_relax()
#define	arch_read_can_lock(rw)   (!((rw)->lock & 0xff))
#define	arch_write_can_lock(rw)   (!(rw)->lock)

Macro Definition Documentation

#define arch_read_can_lock

(

rw

)

(!((rw)->lock & 0xff))

Definition at line 195 of file spinlock_32.h.

#define arch_read_lock

(

lock

)

Value:

do {    unsigned long flags; \
    local_irq_save(flags); \
    __arch_read_lock(lock); \
    local_irq_restore(flags); \
} while(0)

Definition at line 93 of file spinlock_32.h.

#define arch_read_lock_flags	(		rw,
			flags
	)		arch_read_lock(rw)

Definition at line 188 of file spinlock_32.h.

#define arch_read_relax

(

lock

)

cpu_relax()

Definition at line 192 of file spinlock_32.h.

#define arch_read_trylock

(

lock

)

Value:

({  unsigned long flags; \
    int res; \
    local_irq_save(flags); \
    res = __arch_read_trylock(lock); \
    local_irq_restore(flags); \
    res; \
})

Definition at line 178 of file spinlock_32.h.

#define arch_read_unlock

(

lock

)

Value:

do {    unsigned long flags; \
    local_irq_save(flags); \
    __arch_read_unlock(lock); \
    local_irq_restore(flags); \
} while(0)

Definition at line 113 of file spinlock_32.h.

#define arch_spin_is_locked

(

lock

)

(*((volatile unsigned char *)(lock)) != 0)

Definition at line 14 of file spinlock_32.h.

#define arch_spin_lock_flags	(		lock,
			flags
	)		arch_spin_lock(lock)

Definition at line 187 of file spinlock_32.h.

#define arch_spin_relax

(

lock

)

cpu_relax()

Definition at line 191 of file spinlock_32.h.

#define arch_spin_unlock_wait

(

lock

)

do { while (arch_spin_is_locked(lock)) cpu_relax(); } while (0)

Definition at line 16 of file spinlock_32.h.

#define arch_write_can_lock

(

rw

)

(!(rw)->lock)

Definition at line 196 of file spinlock_32.h.

#define arch_write_lock_flags	(		rw,
			flags
	)		arch_write_lock(rw)

Definition at line 189 of file spinlock_32.h.

#define arch_write_relax

(

lock

)

cpu_relax()

Definition at line 193 of file spinlock_32.h.