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-rw-r--r--kernel/sysproc.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/kernel/sysproc.c b/kernel/sysproc.c
index 3b4d5bd..88644b2 100644
--- a/kernel/sysproc.c
+++ b/kernel/sysproc.c
@@ -1,7 +1,7 @@
#include "types.h"
#include "riscv.h"
-#include "defs.h"
#include "param.h"
+#include "defs.h"
#include "memlayout.h"
#include "spinlock.h"
#include "proc.h"
@@ -54,9 +54,8 @@ sys_sleep(void)
int n;
uint ticks0;
+
argint(0, &n);
- if(n < 0)
- n = 0;
acquire(&tickslock);
ticks0 = ticks;
while(ticks - ticks0 < n){
@@ -70,6 +69,16 @@ sys_sleep(void)
return 0;
}
+
+#ifdef LAB_PGTBL
+int
+sys_pgaccess(void)
+{
+ // lab pgtbl: your code here.
+ return 0;
+}
+#endif
+
uint64
sys_kill(void)
{