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Commit 25d539c9 authored by Martin Schwidefsky's avatar Martin Schwidefsky
Browse files

s390/ptrace: clarify bits in the per_struct 



The bits single_step and instruction_fetch lost their meaning
with git commit 5e9a2692 "[S390] ptrace cleanup".
Clarify the comment for these two bits.

Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent c3bdf2e1

arch/s390/include/uapi/asm/ptrace.h

+3 −3
Original line number Diff line number Diff line
@@ -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;