1 files changed, 1 insertions, 0 deletions

diff --git a/include/asm-x86/ptrace.h b/include/asm-x86/ptrace.h
index a9a1bab1451a..61946fe8c085 100644
--- a/include/asm-x86/ptrace.h
+++ b/include/asm-x86/ptrace.h
@@ -9,6 +9,7 @@
 
 #ifdef __KERNEL__
 
+/* the DS BTS struct is used for ptrace as well */
 #include <asm/ds.h>
 
 struct task_struct;