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-rw-r--r--kern/mach_clock.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/kern/mach_clock.h b/kern/mach_clock.h
index 04ed4b99..d4f04f5e 100644
--- a/kern/mach_clock.h
+++ b/kern/mach_clock.h
@@ -41,6 +41,7 @@ extern int hz; /* number of ticks per second */
extern int tick; /* number of usec per tick */
extern time_value64_t time; /* wallclock time (unadjusted) */
+extern time_value64_t uptime; /* time since bootup */
typedef void timer_func_t(void *);