#include <linux/time.h>
#include <linux/wait.h>
+#include <linux/semaphore.h>
#include <asm/atomic.h>
-#include <asm/semaphore.h>
/*
* sema_t structure just maps to struct semaphore in Linux kernel.
typedef struct semaphore sema_t;
-#define init_sema(sp, val, c, d) sema_init(sp, val)
-#define initsema(sp, val) sema_init(sp, val)
#define initnsema(sp, val, name) sema_init(sp, val)
#define psema(sp, b) down(sp)
#define vsema(sp) up(sp)
-#define valusema(sp) (atomic_read(&(sp)->count))
-#define freesema(sema)
+#define freesema(sema) do { } while (0)
+
+static inline int issemalocked(sema_t *sp)
+{
+ return down_trylock(sp) || (up(sp), 0);
+}
/*
* Map cpsema (try to get the sema) to down_trylock. We need to switch
* the return values since cpsema returns 1 (acquired) 0 (failed) and
* down_trylock returns the reverse 0 (acquired) 1 (failed).
*/
-
-#define cpsema(sp) (down_trylock(sp) ? 0 : 1)
-
-/*
- * Didn't do cvsema(sp). Not sure how to map this to up/down/...
- * It does a vsema if the values is < 0 other wise nothing.
- */
+static inline int cpsema(sema_t *sp)
+{
+ return down_trylock(sp) ? 0 : 1;
+}
#endif /* __XFS_SUPPORT_SEMA_H__ */