kernel/amd64: Support fetching time since startup

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/sys/include/sys/timer.h b/sys/include/sys/timer.h
index a255bab..e33b2d3 100644
--- a/sys/include/sys/timer.h
+++ b/sys/include/sys/timer.h
@@ -72,6 +72,8 @@ typedef int tmrr_status_t;
 struct timer {
     const char *name;               /* e.g "HPET" */
     size_t(*calibrate)(void);       /* Returns frequency, 0 for unspecified */
+    size_t(*get_time_usec)(void);   /* Time since init (microseconds) */
+    size_t(*get_time_sec)(void);    /* Time since init (seconds) */
     int(*msleep)(size_t ms);
     int(*usleep)(size_t us);
     int(*nsleep)(size_t ns);