linux-kernel - [for-linus][PATCH 04/27] csky: ftrace: Drop duplicate implementation of arch_check_ftrace

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Date:   Tue, 05 Oct 2021 09:57:37 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     linux-kernel@...r.kernel.org
Cc:     Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Punit Agrawal <punitagrawal@...il.com>,
        Guo Ren <guoren@...nel.org>,
        Masami Hiramatsu <mhiramat@...nel.org>
Subject: [for-linus][PATCH 04/27] csky: ftrace: Drop duplicate implementation of
 arch_check_ftrace_location()

From: Punit Agrawal <punitagrawal@...il.com>

The csky specific arch_check_ftrace_location() shadows a weak
implementation of the function in core code that offers the same
functionality but with additional error checking.

Drop the architecture specific function as a step towards further
cleanup in core code.

Link: https://lkml.kernel.org/r/163163034617.489837.7789033031868135258.stgit@devnote2

Signed-off-by: Punit Agrawal <punitagrawal@...il.com>
Acked-by: Guo Ren <guoren@...nel.org>
Acked-by: Masami Hiramatsu <mhiramat@...nel.org>
Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
---
 arch/csky/kernel/probes/ftrace.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/arch/csky/kernel/probes/ftrace.c b/arch/csky/kernel/probes/ftrace.c
index ef2bb9bd9605..b388228abbf2 100644
--- a/arch/csky/kernel/probes/ftrace.c
+++ b/arch/csky/kernel/probes/ftrace.c
@@ -2,13 +2,6 @@
 
 #include <linux/kprobes.h>
 
-int arch_check_ftrace_location(struct kprobe *p)
-{
-	if (ftrace_location((unsigned long)p->addr))
-		p->flags |= KPROBE_FLAG_FTRACE;
-	return 0;
-}
-
 /* Ftrace callback handler for kprobes -- called under preepmt disabled */
 void kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip,
 			   struct ftrace_ops *ops, struct ftrace_regs *fregs)
-- 
2.32.0