1 files changed, 92 insertions, 0 deletions
diff --git a/module/spl/spl-time.c b/module/spl/spl-time.c
new file mode 100644
index 000000000..88722afe1
--- /dev/null
+++ b/module/spl/spl-time.c
@@ -0,0 +1,92 @@
+/*
+ *  This file is part of the SPL: Solaris Porting Layer.
+ *
+ *  Copyright (c) 2008 Lawrence Livermore National Security, LLC.
+ *  Produced at Lawrence Livermore National Laboratory
+ *  Written by:
+ *          Brian Behlendorf <[email protected]>,
+ *          Herb Wartens <[email protected]>,
+ *          Jim Garlick <[email protected]>
+ *  UCRL-CODE-235197
+ *
+ *  This is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This is distributed in the hope that it will be useful, but WITHOUT
+ *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ *  for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
+ */
+
+#include <sys/sysmacros.h>
+#include <sys/time.h>
+
+#ifdef HAVE_MONOTONIC_CLOCK
+extern unsigned long long monotonic_clock(void);
+#endif
+
+#ifdef DEBUG_SUBSYSTEM
+#undef DEBUG_SUBSYSTEM
+#endif
+
+#define DEBUG_SUBSYSTEM S_TIME
+
+void
+__gethrestime(timestruc_t *ts)
+{
+        struct timeval tv;
+
+	do_gettimeofday(&tv);
+	ts->tv_sec = tv.tv_sec;
+	ts->tv_nsec = tv.tv_usec * NSEC_PER_USEC;
+}
+EXPORT_SYMBOL(__gethrestime);
+
+/* Use monotonic_clock() by default. It's faster and is available on older
+ * kernels, but few architectures have them, so we must fallback to
+ * do_posix_clock_monotonic_gettime().
+ */
+hrtime_t
+__gethrtime(void) {
+#ifdef HAVE_MONOTONIC_CLOCK
+        unsigned long long res = monotonic_clock();
+
+        /* Deal with signed/unsigned mismatch */
+        return (hrtime_t)(res & ~(1ULL << 63));
+#else
+        int64_t j = get_jiffies_64();
+
+        return j * NSEC_PER_SEC / HZ;
+#endif
+}
+EXPORT_SYMBOL(__gethrtime);
+
+/* set_normalized_timespec() API changes
+ * 2.6.0  - 2.6.15: Inline function provided by linux/time.h
+ * 2.6.16 - 2.6.25: Function prototype defined but not exported
+ * 2.6.26 - 2.6.x:  Function defined and exported
+ */
+#if !defined(HAVE_SET_NORMALIZED_TIMESPEC_INLINE) && \
+    !defined(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT)
+void
+set_normalized_timespec(struct timespec *ts, time_t sec, long nsec)
+{
+	while (nsec >= NSEC_PER_SEC) {
+	        nsec -= NSEC_PER_SEC;
+	        ++sec;
+	}
+	while (nsec < 0) {
+	        nsec += NSEC_PER_SEC;
+	        --sec;
+	}
+	ts->tv_sec = sec;
+	ts->tv_nsec = nsec;
+}
+EXPORT_SYMBOL(set_normalized_timespec);
+#endif