nsectime() function

525f0d7d · Silas Boyd-Wickizer · d02154e3 · 525f0d7d · 525f0d7d
--- a/hz.c
+++ b/hz.c
@@ -3,6 +3,7 @@
 #include "types.h"
 #include "amd64.h"
+#include "kernel.h"
 #define IO_TIMER1       0x040           // 8253 Timer #1
 #define TIMER_FREQ      1193182
@@ -25,6 +26,13 @@ microdelay(u64 delay)
    nop_pause();
 }
+u64
+nsectime(void)
+{
+  u64 msec = ticks*QUANTUM;
+  return msec*1000000;
+}
 void
 inithz(void)
 {

--- a/kernel.h
+++ b/kernel.h
@@ -117,6 +117,7 @@ pme_t *         walkpgdir(pml4e_t*, const void*, int);
 // hz.c
 void            microdelay(u64);
+u64             nsectime(void);
 // ide.c
 void            ideinit(void);