X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Fsched.h;h=bd5ff78798c2991b83a2f7e77315d272ed8343dd;hb=a9de18eb761f7c1c860964b2e5addc1a35c7e861;hp=8395e715809d382bb7f3a5ed7087173e99cd15d2;hpb=6a94cb73064c952255336cc57731904174b2c58f;p=linux-2.6-omap-h63xx.git

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 8395e715809..bd5ff78798c 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1102,10 +1102,9 @@ struct task_struct {
 	pid_t pid;
 	pid_t tgid;
 
-#ifdef CONFIG_CC_STACKPROTECTOR
 	/* Canary value for the -fstack-protector gcc feature */
 	unsigned long stack_canary;
-#endif
+
 	/* 
 	 * pointers to (original) parent process, youngest child, younger sibling,
 	 * older sibling, respectively.  (p->father can be replaced with 
@@ -2011,6 +2010,19 @@ static inline int object_is_on_stack(void *obj)
 
 extern void thread_info_cache_init(void);
 
+#ifdef CONFIG_DEBUG_STACK_USAGE
+static inline unsigned long stack_not_used(struct task_struct *p)
+{
+	unsigned long *n = end_of_stack(p);
+
+	do { 	/* Skip over canary */
+		n++;
+	} while (!*n);
+
+	return (unsigned long)n - (unsigned long)end_of_stack(p);
+}
+#endif
+
 /* set thread flags in other task's structures
  * - see asm/thread_info.h for TIF_xxxx flags available
  */