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-rw-r--r--arch/blackfin/include/asm/ptrace.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/ptrace.h b/arch/blackfin/include/asm/ptrace.h
index aaa1c6c2bc1..832d7c009a2 100644
--- a/arch/blackfin/include/asm/ptrace.h
+++ b/arch/blackfin/include/asm/ptrace.h
@@ -113,6 +113,9 @@ extern void user_disable_single_step(struct task_struct *child);
/* common code demands this function */
#define ptrace_disable(child) user_disable_single_step(child)
+extern int is_user_addr_valid(struct task_struct *child,
+ unsigned long start, unsigned long len);
+
/*
* Get the address of the live pt_regs for the specified task.
* These are saved onto the top kernel stack when the process