LCOV - code coverage report
Current view: top level - klever-core-work-dir/0d4a846/linux-drivers-clk2/lkbce/include/linux - spinlock_types.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 2 2 100.0 %
Date: 2017-01-25 Functions: 0 0 -

          Line data    Source code
       1             : #ifndef __LINUX_SPINLOCK_TYPES_H
       2             : #define __LINUX_SPINLOCK_TYPES_H
       3             : 
       4             : /*
       5             :  * include/linux/spinlock_types.h - generic spinlock type definitions
       6             :  *                                  and initializers
       7             :  *
       8             :  * portions Copyright 2005, Red Hat, Inc., Ingo Molnar
       9             :  * Released under the General Public License (GPL).
      10             :  */
      11             : 
      12             : #if defined(CONFIG_SMP)
      13             : # include <asm/spinlock_types.h>
      14             : #else
      15             : # include <linux/spinlock_types_up.h>
      16             : #endif
      17             : 
      18             : #include <linux/lockdep.h>
      19             : 
      20             : typedef struct raw_spinlock {
      21             :         arch_spinlock_t raw_lock;
      22             : #ifdef CONFIG_GENERIC_LOCKBREAK
      23             :         unsigned int break_lock;
      24             : #endif
      25             : #ifdef CONFIG_DEBUG_SPINLOCK
      26             :         unsigned int magic, owner_cpu;
      27             :         void *owner;
      28             : #endif
      29             : #ifdef CONFIG_DEBUG_LOCK_ALLOC
      30             :         struct lockdep_map dep_map;
      31             : #endif
      32             : } raw_spinlock_t;
      33           2 : 
      34             : #define SPINLOCK_MAGIC          0xdead4ead
      35             : 
      36             : #define SPINLOCK_OWNER_INIT     ((void *)-1L)
      37             : 
      38             : #ifdef CONFIG_DEBUG_LOCK_ALLOC
      39             : # define SPIN_DEP_MAP_INIT(lockname)    .dep_map = { .name = #lockname }
      40             : #else
      41             : # define SPIN_DEP_MAP_INIT(lockname)
      42             : #endif
      43             : 
      44             : #ifdef CONFIG_DEBUG_SPINLOCK
      45             : # define SPIN_DEBUG_INIT(lockname)              \
      46             :         .magic = SPINLOCK_MAGIC,                \
      47             :         .owner_cpu = -1,                        \
      48             :         .owner = SPINLOCK_OWNER_INIT,
      49             : #else
      50             : # define SPIN_DEBUG_INIT(lockname)
      51             : #endif
      52             : 
      53             : #define __RAW_SPIN_LOCK_INITIALIZER(lockname)   \
      54             :         {                                       \
      55             :         .raw_lock = __ARCH_SPIN_LOCK_UNLOCKED,  \
      56             :         SPIN_DEBUG_INIT(lockname)               \
      57             :         SPIN_DEP_MAP_INIT(lockname) }
      58             : 
      59             : #define __RAW_SPIN_LOCK_UNLOCKED(lockname)      \
      60             :         (raw_spinlock_t) __RAW_SPIN_LOCK_INITIALIZER(lockname)
      61             : 
      62             : #define DEFINE_RAW_SPINLOCK(x)  raw_spinlock_t x = __RAW_SPIN_LOCK_UNLOCKED(x)
      63             : 
      64             : typedef struct spinlock {
      65             :         union {
      66             :                 struct raw_spinlock rlock;
      67             : 
      68             : #ifdef CONFIG_DEBUG_LOCK_ALLOC
      69             : # define LOCK_PADSIZE (offsetof(struct raw_spinlock, dep_map))
      70             :                 struct {
      71             :                         u8 __padding[LOCK_PADSIZE];
      72             :                         struct lockdep_map dep_map;
      73             :                 };
      74             : #endif
      75             :         };
      76           1 : } spinlock_t;
      77             : 
      78             : #define __SPIN_LOCK_INITIALIZER(lockname) \
      79             :         { { .rlock = __RAW_SPIN_LOCK_INITIALIZER(lockname) } }
      80             : 
      81             : #define __SPIN_LOCK_UNLOCKED(lockname) \
      82             :         (spinlock_t ) __SPIN_LOCK_INITIALIZER(lockname)
      83             : 
      84             : /*
      85             :  * SPIN_LOCK_UNLOCKED defeats lockdep state tracking and is hence
      86             :  * deprecated.
      87             :  * Please use DEFINE_SPINLOCK() or __SPIN_LOCK_UNLOCKED() as
      88             :  * appropriate.
      89             :  */
      90             : #define SPIN_LOCK_UNLOCKED      __SPIN_LOCK_UNLOCKED(old_style_spin_init)
      91             : 
      92             : #define DEFINE_SPINLOCK(x)      spinlock_t x = __SPIN_LOCK_UNLOCKED(x)
      93             : 
      94             : #include <linux/rwlock_types.h>
      95             : 
      96             : #endif /* __LINUX_SPINLOCK_TYPES_H */

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