commit 2715cd35921ee748154ebdce04ed84a1e543338f
parent dca5b5ca2e3687f27ebf589fe3855966932840d8
Author: rsc <rsc>
Date: Fri, 10 Aug 2007 17:17:57 +0000
and spinlock
Diffstat:
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/spinlock.c b/spinlock.c
@@ -22,8 +22,10 @@ initlock(struct spinlock *lock, char *name)
void
getcallerpcs(void *v, uint pcs[])
{
- uint *ebp = (uint*)v - 2;
+ uint *ebp;
int i;
+
+ ebp = (uint*)v - 2;
for(i = 0; i < 10; i++){
if(ebp == 0 || ebp == (uint*)0xffffffff)
break;
@@ -88,3 +90,4 @@ holding(struct spinlock *lock)
{
return lock->locked && lock->cpu == cpu() + 10;
}
+