# define MEMBARRIER_EXPEDITED (1 << 0)
# define MEMBARRIER_DELAYED (1 << 1)
# define MEMBARRIER_QUERY (1 << 16)
-# define membarrier(...) syscall(__NR_membarrier, __VA_ARGS__)
+# define membarrier(...) syscall(SYS_membarrier, __VA_ARGS__)
#else
# undef RCU_MEMBARRIER
# define RCU_MB
*/
#define RCU_GP_COUNT (1UL << 0)
/* Use the amount of bits equal to half of the architecture long size */
-#define RCU_GP_CTR_PHASE (1UL << (sizeof(long) << 2))
+#define RCU_GP_CTR_PHASE (1UL << (sizeof(unsigned long) << 2))
#define RCU_GP_CTR_NEST_MASK (RCU_GP_CTR_PHASE - 1)
/*
* Using a int rather than a char to eliminate false register dependencies
* causing stalls on some architectures.
*/
-extern long rcu_gp_ctr;
+extern unsigned long rcu_gp_ctr;
struct rcu_reader {
/* Data used by both reader and synchronize_rcu() */
- long ctr;
+ unsigned long ctr;
char need_mb;
/* Data used for registry */
struct list_head head __attribute__((aligned(CACHE_LINE_SIZE)));
}
}
-static inline int rcu_old_gp_ongoing(long *value)
+static inline int rcu_gp_ongoing(unsigned long *ctr)
{
- long v;
+ unsigned long v;
- if (value == NULL)
- return 0;
/*
* Make sure both tests below are done on the same version of *value
* to insure consistency.
*/
- v = LOAD_SHARED(*value);
+ v = LOAD_SHARED(*ctr);
return (v & RCU_GP_CTR_NEST_MASK) &&
((v ^ rcu_gp_ctr) & RCU_GP_CTR_PHASE);
}
static inline void _rcu_read_lock(void)
{
- long tmp;
+ unsigned long tmp;
tmp = rcu_reader.ctr;
/*
static inline void _rcu_read_unlock(void)
{
- long tmp;
+ unsigned long tmp;
tmp = rcu_reader.ctr;
/*