From 748e4f3d702def1a4bff191e0cf93b6a05340f01 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:41:34 +0000
Subject: [PATCH] add gpio led uart
---
kernel/arch/nds32/kernel/ftrace.c | 18 +++---------------
1 files changed, 3 insertions(+), 15 deletions(-)
diff --git a/kernel/arch/nds32/kernel/ftrace.c b/kernel/arch/nds32/kernel/ftrace.c
index 8a41372..3763b3f 100644
--- a/kernel/arch/nds32/kernel/ftrace.c
+++ b/kernel/arch/nds32/kernel/ftrace.c
@@ -7,7 +7,6 @@
#ifndef CONFIG_DYNAMIC_FTRACE
extern void (*ftrace_trace_function)(unsigned long, unsigned long,
struct ftrace_ops*, struct pt_regs*);
-extern int ftrace_graph_entry_stub(struct ftrace_graph_ent *trace);
extern void ftrace_graph_caller(void);
noinline void __naked ftrace_stub(unsigned long ip, unsigned long parent_ip,
@@ -90,18 +89,6 @@
return 0;
}
-int ftrace_arch_code_modify_prepare(void)
-{
- set_all_modules_text_rw();
- return 0;
-}
-
-int ftrace_arch_code_modify_post_process(void)
-{
- set_all_modules_text_ro();
- return 0;
-}
-
static unsigned long gen_sethi_insn(unsigned long addr)
{
unsigned long opcode = 0x46000000;
@@ -144,13 +131,14 @@
unsigned long orig_insn[3];
if (validate) {
- if (probe_kernel_read(orig_insn, (void *)pc, MCOUNT_INSN_SIZE))
+ if (copy_from_kernel_nofault(orig_insn, (void *)pc,
+ MCOUNT_INSN_SIZE))
return -EFAULT;
if (memcmp(orig_insn, old_insn, MCOUNT_INSN_SIZE))
return -EINVAL;
}
- if (probe_kernel_write((void *)pc, new_insn, MCOUNT_INSN_SIZE))
+ if (copy_to_kernel_nofault((void *)pc, new_insn, MCOUNT_INSN_SIZE))
return -EPERM;
return 0;
--
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