Commit 4d296c24 authored by Steven Rostedt's avatar Steven Rostedt Committed by Ingo Molnar

ftrace: remove mcount set

The arch dependent function ftrace_mcount_set was only used by the daemon
start up code. This patch removes it.
Signed-off-by: default avatarSteven Rostedt <srostedt@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent cb7be3b2
......@@ -95,19 +95,6 @@ int ftrace_update_ftrace_func(ftrace_func_t func)
return ret;
}
int ftrace_mcount_set(unsigned long *data)
{
unsigned long pc, old;
unsigned long *addr = data;
unsigned char *new;
pc = (unsigned long)&mcount_call;
memcpy(&old, &mcount_call, MCOUNT_INSN_SIZE);
new = ftrace_call_replace(pc, *addr);
*addr = ftrace_modify_code(pc, (unsigned char *)&old, new);
return 0;
}
/* run from kstop_machine */
int __init ftrace_dyn_arch_init(void *data)
{
......
......@@ -126,23 +126,6 @@ notrace int ftrace_update_ftrace_func(ftrace_func_t func)
return ret;
}
notrace int ftrace_mcount_set(unsigned long *data)
{
unsigned long ip = (long)(&mcount_call);
unsigned long *addr = data;
unsigned char old[MCOUNT_INSN_SIZE], *new;
/*
* Replace the mcount stub with a pointer to the
* ip recorder function.
*/
memcpy(old, &mcount_call, MCOUNT_INSN_SIZE);
new = ftrace_call_replace(ip, *addr);
*addr = ftrace_modify_code(ip, old, new);
return 0;
}
int __init ftrace_dyn_arch_init(void *data)
{
/* This is running in kstop_machine */
......
......@@ -69,24 +69,6 @@ notrace int ftrace_update_ftrace_func(ftrace_func_t func)
return ftrace_modify_code(ip, old, new);
}
notrace int ftrace_mcount_set(unsigned long *data)
{
unsigned long ip = (long)(&mcount_call);
unsigned long *addr = data;
unsigned char old[MCOUNT_INSN_SIZE], *new;
/*
* Replace the mcount stub with a pointer to the
* ip recorder function.
*/
memcpy(old, &mcount_call, MCOUNT_INSN_SIZE);
new = ftrace_call_replace(ip, *addr);
*addr = ftrace_modify_code(ip, old, new);
return 0;
}
int __init ftrace_dyn_arch_init(void *data)
{
ftrace_mcount_set(data);
......
......@@ -103,13 +103,6 @@ notrace int ftrace_update_ftrace_func(ftrace_func_t func)
return ret;
}
notrace int ftrace_mcount_set(unsigned long *data)
{
/* mcount is initialized as a nop */
*data = 0;
return 0;
}
int __init ftrace_dyn_arch_init(void *data)
{
extern const unsigned char ftrace_test_p6nop[];
......
......@@ -71,7 +71,6 @@ extern int ftrace_ip_converted(unsigned long ip);
extern unsigned char *ftrace_nop_replace(void);
extern unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr);
extern int ftrace_dyn_arch_init(void *data);
extern int ftrace_mcount_set(unsigned long *data);
extern int ftrace_update_ftrace_func(ftrace_func_t func);
extern void ftrace_caller(void);
extern void ftrace_call(void);
......
......@@ -620,7 +620,6 @@ static int ftrace_update_code(void *ignore);
static int __ftrace_modify_code(void *data)
{
unsigned long addr;
int *command = data;
if (*command & FTRACE_ENABLE_CALLS) {
......@@ -639,14 +638,6 @@ static int __ftrace_modify_code(void *data)
if (*command & FTRACE_UPDATE_TRACE_FUNC)
ftrace_update_ftrace_func(ftrace_trace_function);
if (*command & FTRACE_ENABLE_MCOUNT) {
addr = (unsigned long)ftrace_record_ip;
ftrace_mcount_set(&addr);
} else if (*command & FTRACE_DISABLE_MCOUNT) {
addr = (unsigned long)ftrace_stub;
ftrace_mcount_set(&addr);
}
return 0;
}
......
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