#define __LIBCFS_LINUX_LINUX_TIME_H__
/* Portable time API */
-
-/*
- * Platform provides three opaque data-types:
- *
- * cfs_time_t represents point in time. This is internal kernel
- * time rather than "wall clock". This time bears no
- * relation to gettimeofday().
- *
- * cfs_duration_t represents time interval with resolution of internal
- * platform clock
- *
- * cfs_time_t cfs_time_current(void);
- * cfs_time_t cfs_time_add (cfs_time_t, cfs_duration_t);
- * cfs_duration_t cfs_time_sub (cfs_time_t, cfs_time_t);
- *
- * time_t cfs_duration_sec (cfs_duration_t);
- */
-
#include <linux/hrtimer.h>
#include <linux/module.h>
#include <linux/kernel.h>
/*
* Generic kernel stuff
*/
-
-typedef unsigned long cfs_time_t; /* jiffies */
-typedef long cfs_duration_t;
-
#ifndef HAVE_TIMESPEC64
typedef __s64 time64_t;
#endif /* HAVE_TIMESPEC64 */
+#ifndef HAVE_NS_TO_TIMESPEC64
+static inline struct timespec64 ns_to_timespec64(const s64 nsec)
+{
+ struct timespec64 ts;
+ s32 rem;
+
+ if (!nsec)
+ return (struct timespec64) {0, 0};
+
+ ts.tv_sec = div_s64_rem(nsec, NSEC_PER_SEC, &rem);
+ if (unlikely(rem < 0)) {
+ ts.tv_sec--;
+ rem += NSEC_PER_SEC;
+ }
+ ts.tv_nsec = rem;
+
+ return ts;
+}
+#endif
+
#ifndef HAVE_KTIME_ADD
# define ktime_add(lhs, rhs) ({ (ktime_t){ .tv64 = (lhs).tv64 + (rhs).tv64 }; })
#endif /* !HAVE_KTIME_ADD */
}
#endif
-static inline int cfs_time_before(cfs_time_t t1, cfs_time_t t2)
-{
- return time_before(t1, t2);
-}
-
-static inline int cfs_time_beforeq(cfs_time_t t1, cfs_time_t t2)
-{
- return time_before_eq(t1, t2);
-}
-
-static inline cfs_time_t cfs_time_current(void)
-{
- return jiffies;
-}
-
-static inline time_t cfs_time_current_sec(void)
-{
- return get_seconds();
-}
-
-static inline cfs_duration_t cfs_time_seconds(int seconds)
-{
- return ((cfs_duration_t)seconds) * msecs_to_jiffies(MSEC_PER_SEC);
-}
-
-static inline time_t cfs_duration_sec(cfs_duration_t d)
+static inline unsigned long cfs_time_seconds(time64_t seconds)
{
- return d / msecs_to_jiffies(MSEC_PER_SEC);
+ return nsecs_to_jiffies64(seconds * NSEC_PER_SEC);
}
-#define cfs_time_current_64 get_jiffies_64
+#ifdef HAVE_NEW_DEFINE_TIMER
+# ifndef TIMER_DATA_TYPE
+# define TIMER_DATA_TYPE struct timer_list *
+# endif
-static inline __u64 cfs_time_add_64(__u64 t, __u64 d)
-{
- return t + d;
-}
-
-static inline __u64 cfs_time_shift_64(int seconds)
-{
- return cfs_time_add_64(cfs_time_current_64(),
- cfs_time_seconds(seconds));
-}
+#define CFS_DEFINE_TIMER(_name, _function, _expires, _data) \
+ DEFINE_TIMER((_name), (_function))
+#else
+# ifndef TIMER_DATA_TYPE
+# define TIMER_DATA_TYPE unsigned long
+# endif
-static inline int cfs_time_before_64(__u64 t1, __u64 t2)
-{
- return (__s64)t2 - (__s64)t1 > 0;
-}
+#define CFS_DEFINE_TIMER(_name, _function, _expires, _data) \
+ DEFINE_TIMER((_name), (_function), (_expires), (_data))
+#endif
-static inline int cfs_time_beforeq_64(__u64 t1, __u64 t2)
-{
- return (__s64)t2 - (__s64)t1 >= 0;
-}
+#ifdef HAVE_TIMER_SETUP
+#define cfs_timer_cb_arg_t struct timer_list *
+#define cfs_from_timer(var, callback_timer, timer_fieldname) \
+ from_timer(var, callback_timer, timer_fieldname)
+#define cfs_timer_setup(timer, callback, data, flags) \
+ timer_setup((timer), (callback), (flags))
+#define cfs_timer_cb_arg(var, timer_fieldname) (&(var)->timer_fieldname)
+#else
+#define cfs_timer_cb_arg_t unsigned long
+#define cfs_from_timer(var, data, timer_fieldname) (typeof(var))(data)
+#define cfs_timer_setup(timer, callback, data, flags) \
+ setup_timer((timer), (callback), (data))
+#define cfs_timer_cb_arg(var, timer_fieldname) (cfs_timer_cb_arg_t)(var)
+#endif
#endif /* __LIBCFS_LINUX_LINUX_TIME_H__ */