1 files changed, 3 insertions, 0 deletions

diff --git a/include/asm-alpha/ptrace.h b/include/asm-alpha/ptrace.h
index d462c5e14c13..072375c135b4 100644
--- a/include/asm-alpha/ptrace.h
+++ b/include/asm-alpha/ptrace.h
@@ -67,6 +67,9 @@ struct switch_stack {
 };
 
 #ifdef __KERNEL__
+
+#define __ARCH_SYS_PTRACE       1
+
 #define user_mode(regs) (((regs)->ps & 8) != 0)
 #define instruction_pointer(regs) ((regs)->pc)
 #define profile_pc(regs) instruction_pointer(regs)