ptrace: remove redudant check of #ifdef PTRACE_SINGLESTEP

Patch series "ptrace: do some cleanup".


This patch (of 3):

PTRACE_SINGLESTEP is always defined as 9 in include/uapi/linux/ptrace.h,
remove redudant check of #ifdef PTRACE_SINGLESTEP.

Link: https://lkml.kernel.org/r/1649240981-11024-2-git-send-email-yangtiezhu@loongson.cnSigned-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

kernel/ptrace.c

@@ -829,11 +829,7 @@ static long ptrace_get_rseq_configuration(struct task_struct *task,
 }
 #endif
 
-#ifdef PTRACE_SINGLESTEP
 #define is_singlestep(request)		((request) == PTRACE_SINGLESTEP)
-#else
-#define is_singlestep(request)		0
-#endif
 
 #ifdef PTRACE_SINGLEBLOCK
 #define is_singleblock(request)		((request) == PTRACE_SINGLEBLOCK)
@@ -1221,9 +1217,7 @@ int ptrace_request(struct task_struct *child, long request,
 	}
 #endif
 
-#ifdef PTRACE_SINGLESTEP
 	case PTRACE_SINGLESTEP:
-#endif
 #ifdef PTRACE_SINGLEBLOCK
 	case PTRACE_SINGLEBLOCK:
 #endif