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Diffstat (limited to 'arch/s390/include/uapi/asm/ptrace.h')
-rw-r--r--arch/s390/include/uapi/asm/ptrace.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/s390/include/uapi/asm/ptrace.h b/arch/s390/include/uapi/asm/ptrace.h
index a150f4fabe43..77630c74f13b 100644
--- a/arch/s390/include/uapi/asm/ptrace.h
+++ b/arch/s390/include/uapi/asm/ptrace.h
@@ -359,9 +359,9 @@ typedef struct
per_cr_bits bits;
} control_regs;
/*
- * Use these flags instead of setting em_instruction_fetch
- * directly they are used so that single stepping can be
- * switched on & off while not affecting other tracing
+ * The single_step and instruction_fetch bits are obsolete,
+ * the kernel always sets them to zero. To enable single
+ * stepping use ptrace(PTRACE_SINGLESTEP) instead.
*/
unsigned single_step : 1;
unsigned instruction_fetch : 1;