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      1 /****************************************************************************
      2  ****************************************************************************
      3  ***
      4  ***   This header was automatically generated from a Linux kernel header
      5  ***   of the same name, to make information necessary for userspace to
      6  ***   call into the kernel available to libc.  It contains only constants,
      7  ***   structures, and macros generated from the original header, and thus,
      8  ***   contains no copyrightable information.
      9  ***
     10  ****************************************************************************
     11  ****************************************************************************/
     12 #ifndef __LINUX_SPINLOCK_H
     13 #define __LINUX_SPINLOCK_H
     14 
     15 #include <linux/preempt.h>
     16 #include <linux/linkage.h>
     17 #include <linux/compiler.h>
     18 #include <linux/thread_info.h>
     19 #include <linux/kernel.h>
     20 #include <linux/stringify.h>
     21 
     22 #include <asm/system.h>
     23 
     24 #define LOCK_SECTION_NAME ".text.lock."KBUILD_BASENAME
     25 
     26 #define LOCK_SECTION_START(extra)   ".subsection 1\n\t"   extra   ".ifndef " LOCK_SECTION_NAME "\n\t"   LOCK_SECTION_NAME ":\n\t"   ".endif\n"
     27 
     28 #define LOCK_SECTION_END   ".previous\n\t"
     29 
     30 #define __lockfunc fastcall __attribute__((section(".spinlock.text")))
     31 
     32 #include <linux/spinlock_types.h>
     33 
     34 #include <linux/spinlock_up.h>
     35 
     36 #define spin_lock_init(lock)   do { *(lock) = SPIN_LOCK_UNLOCKED; } while (0)
     37 
     38 #define rwlock_init(lock)   do { *(lock) = RW_LOCK_UNLOCKED; } while (0)
     39 
     40 #define spin_is_locked(lock) __raw_spin_is_locked(&(lock)->raw_lock)
     41 
     42 #define spin_unlock_wait(lock) __raw_spin_unlock_wait(&(lock)->raw_lock)
     43 
     44 #include <linux/spinlock_api_up.h>
     45 
     46 #define _raw_spin_lock(lock) __raw_spin_lock(&(lock)->raw_lock)
     47 #define _raw_spin_lock_flags(lock, flags)   __raw_spin_lock_flags(&(lock)->raw_lock, *(flags))
     48 #define _raw_spin_trylock(lock) __raw_spin_trylock(&(lock)->raw_lock)
     49 #define _raw_spin_unlock(lock) __raw_spin_unlock(&(lock)->raw_lock)
     50 #define _raw_read_lock(rwlock) __raw_read_lock(&(rwlock)->raw_lock)
     51 #define _raw_read_trylock(rwlock) __raw_read_trylock(&(rwlock)->raw_lock)
     52 #define _raw_read_unlock(rwlock) __raw_read_unlock(&(rwlock)->raw_lock)
     53 #define _raw_write_lock(rwlock) __raw_write_lock(&(rwlock)->raw_lock)
     54 #define _raw_write_trylock(rwlock) __raw_write_trylock(&(rwlock)->raw_lock)
     55 #define _raw_write_unlock(rwlock) __raw_write_unlock(&(rwlock)->raw_lock)
     56 
     57 #define read_can_lock(rwlock) __raw_read_can_lock(&(rwlock)->raw_lock)
     58 #define write_can_lock(rwlock) __raw_write_can_lock(&(rwlock)->raw_lock)
     59 
     60 #define spin_trylock(lock) __cond_lock(_spin_trylock(lock))
     61 #define read_trylock(lock) __cond_lock(_read_trylock(lock))
     62 #define write_trylock(lock) __cond_lock(_write_trylock(lock))
     63 
     64 #define spin_lock(lock) _spin_lock(lock)
     65 
     66 #define spin_lock_nested(lock, subclass) _spin_lock(lock)
     67 
     68 #define write_lock(lock) _write_lock(lock)
     69 #define read_lock(lock) _read_lock(lock)
     70 
     71 #define spin_lock_irqsave(lock, flags) _spin_lock_irqsave(lock, flags)
     72 #define read_lock_irqsave(lock, flags) _read_lock_irqsave(lock, flags)
     73 #define write_lock_irqsave(lock, flags) _write_lock_irqsave(lock, flags)
     74 
     75 #define spin_lock_irq(lock) _spin_lock_irq(lock)
     76 #define spin_lock_bh(lock) _spin_lock_bh(lock)
     77 
     78 #define read_lock_irq(lock) _read_lock_irq(lock)
     79 #define read_lock_bh(lock) _read_lock_bh(lock)
     80 
     81 #define write_lock_irq(lock) _write_lock_irq(lock)
     82 #define write_lock_bh(lock) _write_lock_bh(lock)
     83 
     84 #define spin_unlock(lock) _spin_unlock(lock)
     85 #define read_unlock(lock) _read_unlock(lock)
     86 #define write_unlock(lock) _write_unlock(lock)
     87 #define spin_unlock_irq(lock) _spin_unlock_irq(lock)
     88 #define read_unlock_irq(lock) _read_unlock_irq(lock)
     89 #define write_unlock_irq(lock) _write_unlock_irq(lock)
     90 
     91 #define spin_unlock_irqrestore(lock, flags)   _spin_unlock_irqrestore(lock, flags)
     92 #define spin_unlock_bh(lock) _spin_unlock_bh(lock)
     93 
     94 #define read_unlock_irqrestore(lock, flags)   _read_unlock_irqrestore(lock, flags)
     95 #define read_unlock_bh(lock) _read_unlock_bh(lock)
     96 
     97 #define write_unlock_irqrestore(lock, flags)   _write_unlock_irqrestore(lock, flags)
     98 #define write_unlock_bh(lock) _write_unlock_bh(lock)
     99 
    100 #define spin_trylock_bh(lock) __cond_lock(_spin_trylock_bh(lock))
    101 
    102 #define spin_trylock_irq(lock)  ({   local_irq_disable();   _spin_trylock(lock) ?   1 : ({ local_irq_enable(); 0; });  })
    103 
    104 #define spin_trylock_irqsave(lock, flags)  ({   local_irq_save(flags);   _spin_trylock(lock) ?   1 : ({ local_irq_restore(flags); 0; });  })
    105 
    106 #include <asm/atomic.h>
    107 
    108 #define atomic_dec_and_lock(atomic, lock)   __cond_lock(_atomic_dec_and_lock(atomic, lock))
    109 
    110 #define spin_can_lock(lock) (!spin_is_locked(lock))
    111 
    112 #endif
    113