LU-4423 selftest: use jiffies_to_*() instead of cfs_duration_usec

[fs/lustre-release.git] / libcfs / include / libcfs / linux / linux-time.h

diff --git a/libcfs/include/libcfs/linux/linux-time.h b/libcfs/include/libcfs/linux/linux-time.h
index 44caab3..dc84385 100644 (file)
--- a/libcfs/include/libcfs/linux/linux-time.h
+++ b/libcfs/include/libcfs/linux/linux-time.h
@@ -15,11 +15,7 @@
  *
  * You should have received a copy of the GNU General Public License
  * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
@@ -90,25 +86,124 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/version.h>
+#include <linux/jiffies.h>
+#include <linux/types.h>
 #include <linux/time.h>
 #include <asm/div64.h>
 
 /*
- * post 2.5 kernels.
- */
-
-#include <linux/jiffies.h>
-
-/*
  * Generic kernel stuff
  */
 
 typedef unsigned long cfs_time_t;      /* jiffies */
 typedef long cfs_duration_t;
-typedef cycles_t cfs_cycles_t;
 
-#define timespec64             timespec
-#define ktime_get_real_ts64    ktime_get_real_ts
+#ifndef HAVE_TIMESPEC64
+
+typedef __s64 time64_t;
+
+#if __BITS_PER_LONG == 64
+
+# define timespec64 timespec
+
+static inline struct timespec64 timespec_to_timespec64(const struct timespec ts)
+{
+       return ts;
+}
+
+static inline struct timespec timespec64_to_timespec(const struct timespec64 ts)
+{
+       return ts;
+}
+
+#else
+struct timespec64 {
+       time64_t        tv_sec;         /* seconds */
+       long            tv_nsec;        /* nanoseconds */
+};
+
+static inline struct timespec64 timespec_to_timespec64(const struct timespec ts)
+{
+       struct timespec64 ret;
+
+       ret.tv_sec = ts.tv_sec;
+       ret.tv_nsec = ts.tv_nsec;
+       return ret;
+}
+
+static inline struct timespec timespec64_to_timespec(const struct timespec64 ts64)
+{
+       struct timespec ret;
+
+       ret.tv_sec = (time_t)ts64.tv_sec;
+       ret.tv_nsec = ts64.tv_nsec;
+       return ret;
+}
+#endif /* __BITS_PER_LONG != 64 */
+
+#endif /* HAVE_TIMESPEC64 */
+
+#ifndef HAVE_KTIME_ADD
+# define ktime_add(lhs, rhs) ({ (ktime_t){ .tv64 = (lhs).tv64 + (rhs).tv64 }; })
+#endif /* !HAVE_KTIME_ADD */
+
+#ifndef HAVE_KTIME_AFTER
+static inline bool ktime_after(const ktime_t cmp1, const ktime_t cmp2)
+{
+       return cmp1.tv64 > cmp2.tv64;
+}
+#endif /* !HAVE_KTIME_AFTER */
+
+#ifndef HAVE_KTIME_GET_TS64
+void ktime_get_ts64(struct timespec64 *ts);
+#endif /* HAVE_KTIME_GET_TS */
+
+#ifndef HAVE_KTIME_GET_REAL_TS64
+void ktime_get_real_ts64(struct timespec64 *ts);
+#endif /* HAVE_KTIME_GET_REAL_TS */
+
+#ifndef HAVE_KTIME_GET_REAL_SECONDS
+time64_t ktime_get_real_seconds(void);
+#endif /* HAVE_KTIME_GET_REAL_SECONDS */
+
+#ifndef HAVE_KTIME_GET_SECONDS
+time64_t ktime_get_seconds(void);
+#endif /* HAVE_KTIME_GET_SECONDS */
+
+#ifdef NEED_KTIME_GET_REAL_NS
+static inline u64 ktime_get_real_ns(void)
+{
+       return ktime_to_ns(ktime_get_real());
+}
+#endif /* NEED_KTIME_GET_REAL_NS */
+
+#ifndef HAVE_KTIME_TO_TIMESPEC64
+static inline struct timespec64 ktime_to_timespec64(ktime_t kt)
+{
+       struct timespec ts = ns_to_timespec((kt).tv64);
+
+       return timespec_to_timespec64(ts);
+}
+#endif /* HAVE_KTIME_TO_TIMESPEC64 */
+
+#ifndef HAVE_TIMESPEC64_SUB
+static inline struct timespec64
+timespec64_sub(struct timespec64 later, struct timespec64 earlier)
+{
+       struct timespec diff;
+
+       diff = timespec_sub(timespec64_to_timespec(later),
+                           timespec64_to_timespec(earlier));
+       return timespec_to_timespec64(diff);
+}
+#endif
+
+#ifndef HAVE_TIMESPEC64_TO_KTIME
+static inline ktime_t timespec64_to_ktime(struct timespec64 ts)
+{
+       return ktime_set(ts.tv_sec, ts.tv_nsec);
+}
+#endif
 
 static inline int cfs_time_before(cfs_time_t t1, cfs_time_t t2)
 {
@@ -142,31 +237,6 @@ static inline time_t cfs_duration_sec(cfs_duration_t d)
        return d / msecs_to_jiffies(MSEC_PER_SEC);
 }
 
-static inline void cfs_duration_usec(cfs_duration_t d, struct timeval *s)
-{
-#if (BITS_PER_LONG == 32)
-       if (msecs_to_jiffies(MSEC_PER_SEC) > 4096) {
-               __u64 t;
-
-               s->tv_sec = d / msecs_to_jiffies(MSEC_PER_SEC);
-               t = (d - (cfs_duration_t)s->tv_sec *
-                    msecs_to_jiffies(MSEC_PER_SEC)) * USEC_PER_SEC;
-               do_div(t, msecs_to_jiffies(MSEC_PER_SEC));
-               s->tv_usec = t;
-       } else {
-               s->tv_sec = d / msecs_to_jiffies(MSEC_PER_SEC);
-               s->tv_usec = ((d - (cfs_duration_t)s->tv_sec *
-                              msecs_to_jiffies(MSEC_PER_SEC)) *
-                              USEC_PER_SEC) / msecs_to_jiffies(MSEC_PER_SEC);
-       }
-#else
-       s->tv_sec = d / msecs_to_jiffies(MSEC_PER_SEC);
-       s->tv_usec = ((d - (cfs_duration_t)s->tv_sec *
-                      msecs_to_jiffies(MSEC_PER_SEC)) *
-                      USEC_PER_SEC) / msecs_to_jiffies(MSEC_PER_SEC);
-#endif
-}
-
 static inline void cfs_duration_nsec(cfs_duration_t d, struct timespec *s)
 {
 #if (BITS_PER_LONG == 32)
@@ -209,8 +279,6 @@ static inline int cfs_time_beforeq_64(__u64 t1, __u64 t2)
 /*
  * One jiffy
  */
-#define CFS_TICK                (1)
-
 #define CFS_TIME_T              "%lu"
 #define CFS_DURATION_T          "%ld"