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Diffstat (limited to 'arch/arm/kernel/ftrace.c')
-rw-r--r--arch/arm/kernel/ftrace.c51
1 files changed, 0 insertions, 51 deletions
diff --git a/arch/arm/kernel/ftrace.c b/arch/arm/kernel/ftrace.c
index 5617932a83df..0142fcfcc3d3 100644
--- a/arch/arm/kernel/ftrace.c
+++ b/arch/arm/kernel/ftrace.c
@@ -47,30 +47,6 @@ void arch_ftrace_update_code(int command)
stop_machine(__ftrace_modify_code, &command, NULL);
}
-#ifdef CONFIG_OLD_MCOUNT
-#define OLD_MCOUNT_ADDR ((unsigned long) mcount)
-#define OLD_FTRACE_ADDR ((unsigned long) ftrace_caller_old)
-
-#define OLD_NOP 0xe1a00000 /* mov r0, r0 */
-
-static unsigned long ftrace_nop_replace(struct dyn_ftrace *rec)
-{
- return rec->arch.old_mcount ? OLD_NOP : NOP;
-}
-
-static unsigned long adjust_address(struct dyn_ftrace *rec, unsigned long addr)
-{
- if (!rec->arch.old_mcount)
- return addr;
-
- if (addr == MCOUNT_ADDR)
- addr = OLD_MCOUNT_ADDR;
- else if (addr == FTRACE_ADDR)
- addr = OLD_FTRACE_ADDR;
-
- return addr;
-}
-#else
static unsigned long ftrace_nop_replace(struct dyn_ftrace *rec)
{
return NOP;
@@ -80,7 +56,6 @@ static unsigned long adjust_address(struct dyn_ftrace *rec, unsigned long addr)
{
return addr;
}
-#endif
int ftrace_arch_code_modify_prepare(void)
{
@@ -150,15 +125,6 @@ int ftrace_update_ftrace_func(ftrace_func_t func)
}
#endif
-#ifdef CONFIG_OLD_MCOUNT
- if (!ret) {
- pc = (unsigned long)&ftrace_call_old;
- new = ftrace_call_replace(pc, (unsigned long)func);
-
- ret = ftrace_modify_code(pc, 0, new, false);
- }
-#endif
-
return ret;
}
@@ -203,16 +169,6 @@ int ftrace_make_nop(struct module *mod,
new = ftrace_nop_replace(rec);
ret = ftrace_modify_code(ip, old, new, true);
-#ifdef CONFIG_OLD_MCOUNT
- if (ret == -EINVAL && addr == MCOUNT_ADDR) {
- rec->arch.old_mcount = true;
-
- old = ftrace_call_replace(ip, adjust_address(rec, addr));
- new = ftrace_nop_replace(rec);
- ret = ftrace_modify_code(ip, old, new, true);
- }
-#endif
-
return ret;
}
@@ -290,13 +246,6 @@ static int ftrace_modify_graph_caller(bool enable)
#endif
-#ifdef CONFIG_OLD_MCOUNT
- if (!ret)
- ret = __ftrace_modify_caller(&ftrace_graph_call_old,
- ftrace_graph_caller_old,
- enable);
-#endif
-
return ret;
}