linux-kernel - [PATCH 1/3] ptrace: Remove redudant check of #ifdef PTRACE

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Message-Id: <1649240981-11024-2-git-send-email-yangtiezhu@loongson.cn>
Date:   Wed,  6 Apr 2022 18:29:39 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Oleg Nesterov <oleg@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] ptrace: Remove redudant check of #ifdef PTRACE_SINGLESTEP

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

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 kernel/ptrace.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index ccc4b46..49c29ba 100644
--- a/kernel/ptrace.c
+++ b/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
-- 
2.1.0