LXR linux/include/linux/spinlock_types

   1#ifndef __LINUX_SPINLOCK_TYPES_RAW_H
   2#define __LINUX_SPINLOCK_TYPES_RAW_H
   3
   4#include <linux/types.h>
   5
   6#if defined(CONFIG_SMP)
   7# include <asm/spinlock_types.h>
   8#else
   9# include <linux/spinlock_types_up.h>
  10#endif
  11
  12#include <linux/lockdep_types.h>
  13
  14typedef struct raw_spinlock {
  15        arch_spinlock_t raw_lock;
  16#ifdef CONFIG_DEBUG_SPINLOCK
  17        unsigned int magic, owner_cpu;
  18        void *owner;
  19#endif
  20#ifdef CONFIG_DEBUG_LOCK_ALLOC
  21        struct lockdep_map dep_map;
  22#endif
  23} raw_spinlock_t;
  24
  25#define SPINLOCK_MAGIC          0xdead4ead
  26
  27#define SPINLOCK_OWNER_INIT     ((void *)-1L)
  28
  29#ifdef CONFIG_DEBUG_LOCK_ALLOC
  30# define RAW_SPIN_DEP_MAP_INIT(lockname)                \
  31        .dep_map = {                                    \
  32                .name = #lockname,                      \
  33                .wait_type_inner = LD_WAIT_SPIN,        \
  34        }
  35# define SPIN_DEP_MAP_INIT(lockname)                    \
  36        .dep_map = {                                    \
  37                .name = #lockname,                      \
  38                .wait_type_inner = LD_WAIT_CONFIG,      \
  39        }
  40
  41# define LOCAL_SPIN_DEP_MAP_INIT(lockname)              \
  42        .dep_map = {                                    \
  43                .name = #lockname,                      \
  44                .wait_type_inner = LD_WAIT_CONFIG,      \
  45                .lock_type = LD_LOCK_PERCPU,            \
  46        }
  47#else
  48# define RAW_SPIN_DEP_MAP_INIT(lockname)
  49# define SPIN_DEP_MAP_INIT(lockname)
  50# define LOCAL_SPIN_DEP_MAP_INIT(lockname)
  51#endif
  52
  53#ifdef CONFIG_DEBUG_SPINLOCK
  54# define SPIN_DEBUG_INIT(lockname)              \
  55        .magic = SPINLOCK_MAGIC,                \
  56        .owner_cpu = -1,                        \
  57        .owner = SPINLOCK_OWNER_INIT,
  58#else
  59# define SPIN_DEBUG_INIT(lockname)
  60#endif
  61
  62#define __RAW_SPIN_LOCK_INITIALIZER(lockname)   \
  63{                                               \
  64        .raw_lock = __ARCH_SPIN_LOCK_UNLOCKED,  \
  65        SPIN_DEBUG_INIT(lockname)               \
  66        RAW_SPIN_DEP_MAP_INIT(lockname) }
  67
  68#define __RAW_SPIN_LOCK_UNLOCKED(lockname)      \
  69        (raw_spinlock_t) __RAW_SPIN_LOCK_INITIALIZER(lockname)
  70
  71#define DEFINE_RAW_SPINLOCK(x)  raw_spinlock_t x = __RAW_SPIN_LOCK_UNLOCKED(x)
  72
  73#endif /* __LINUX_SPINLOCK_TYPES_RAW_H */
  74