X-Git-Url: https://nv-tegra.nvidia.com/r/gitweb?p=linux-2.6.git;a=blobdiff_plain;f=include%2Flinux%2Fsched.h;h=a7c7698583bb15bae4de5b0da9b8aeda61019c5f;hp=8c216e057c94230ea01c110b0f5bc2c28e8f9ee3;hb=6d2e91bf80e4410207f01edb0962aec9213f3533;hpb=dd39ecf522ba86c70809715af46e6557f6491131

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 8c216e057c9..a7c7698583b 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1178,10 +1178,9 @@ 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 
@@ -2087,6 +2086,19 @@ 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
  */