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-rw-r--r--kernel/trace/ftrace.c28
1 files changed, 14 insertions, 14 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 065f1e61e103..8fef1d99bbbf 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1522,10 +1522,8 @@ static void ftrace_startup_enable(int command)
1522 ftrace_run_update_code(command); 1522 ftrace_run_update_code(command);
1523} 1523}
1524 1524
1525static void ftrace_startup(int command) 1525static void ftrace_startup(struct ftrace_ops *ops, int command)
1526{ 1526{
1527 struct ftrace_ops *ops = &global_ops;
1528
1529 if (unlikely(ftrace_disabled)) 1527 if (unlikely(ftrace_disabled))
1530 return; 1528 return;
1531 1529
@@ -1539,10 +1537,8 @@ static void ftrace_startup(int command)
1539 ftrace_startup_enable(command); 1537 ftrace_startup_enable(command);
1540} 1538}
1541 1539
1542static void ftrace_shutdown(int command) 1540static void ftrace_shutdown(struct ftrace_ops *ops, int command)
1543{ 1541{
1544 struct ftrace_ops *ops = &global_ops;
1545
1546 if (unlikely(ftrace_disabled)) 1542 if (unlikely(ftrace_disabled))
1547 return; 1543 return;
1548 1544
@@ -2362,7 +2358,7 @@ static void __enable_ftrace_function_probe(void)
2362 return; 2358 return;
2363 2359
2364 __register_ftrace_function(&trace_probe_ops); 2360 __register_ftrace_function(&trace_probe_ops);
2365 ftrace_startup(0); 2361 ftrace_startup(&global_ops, 0);
2366 ftrace_probe_registered = 1; 2362 ftrace_probe_registered = 1;
2367} 2363}
2368 2364
@@ -2381,7 +2377,7 @@ static void __disable_ftrace_function_probe(void)
2381 2377
2382 /* no more funcs left */ 2378 /* no more funcs left */
2383 __unregister_ftrace_function(&trace_probe_ops); 2379 __unregister_ftrace_function(&trace_probe_ops);
2384 ftrace_shutdown(0); 2380 ftrace_shutdown(&global_ops, 0);
2385 ftrace_probe_registered = 0; 2381 ftrace_probe_registered = 0;
2386} 2382}
2387 2383
@@ -3267,6 +3263,10 @@ void __init ftrace_init(void)
3267 3263
3268#else 3264#else
3269 3265
3266struct ftrace_ops global_ops = {
3267 .func = ftrace_stub,
3268};
3269
3270static int __init ftrace_nodyn_init(void) 3270static int __init ftrace_nodyn_init(void)
3271{ 3271{
3272 ftrace_enabled = 1; 3272 ftrace_enabled = 1;
@@ -3277,8 +3277,8 @@ device_initcall(ftrace_nodyn_init);
3277static inline int ftrace_init_dyn_debugfs(struct dentry *d_tracer) { return 0; } 3277static inline int ftrace_init_dyn_debugfs(struct dentry *d_tracer) { return 0; }
3278static inline void ftrace_startup_enable(int command) { } 3278static inline void ftrace_startup_enable(int command) { }
3279/* Keep as macros so we do not need to define the commands */ 3279/* Keep as macros so we do not need to define the commands */
3280# define ftrace_startup(command) do { } while (0) 3280# define ftrace_startup(ops, command) do { } while (0)
3281# define ftrace_shutdown(command) do { } while (0) 3281# define ftrace_shutdown(ops, command) do { } while (0)
3282# define ftrace_startup_sysctl() do { } while (0) 3282# define ftrace_startup_sysctl() do { } while (0)
3283# define ftrace_shutdown_sysctl() do { } while (0) 3283# define ftrace_shutdown_sysctl() do { } while (0)
3284#endif /* CONFIG_DYNAMIC_FTRACE */ 3284#endif /* CONFIG_DYNAMIC_FTRACE */
@@ -3583,7 +3583,7 @@ int register_ftrace_function(struct ftrace_ops *ops)
3583 goto out_unlock; 3583 goto out_unlock;
3584 3584
3585 ret = __register_ftrace_function(ops); 3585 ret = __register_ftrace_function(ops);
3586 ftrace_startup(0); 3586 ftrace_startup(&global_ops, 0);
3587 3587
3588 out_unlock: 3588 out_unlock:
3589 mutex_unlock(&ftrace_lock); 3589 mutex_unlock(&ftrace_lock);
@@ -3602,7 +3602,7 @@ int unregister_ftrace_function(struct ftrace_ops *ops)
3602 3602
3603 mutex_lock(&ftrace_lock); 3603 mutex_lock(&ftrace_lock);
3604 ret = __unregister_ftrace_function(ops); 3604 ret = __unregister_ftrace_function(ops);
3605 ftrace_shutdown(0); 3605 ftrace_shutdown(&global_ops, 0);
3606 mutex_unlock(&ftrace_lock); 3606 mutex_unlock(&ftrace_lock);
3607 3607
3608 return ret; 3608 return ret;
@@ -3825,7 +3825,7 @@ int register_ftrace_graph(trace_func_graph_ret_t retfunc,
3825 ftrace_graph_return = retfunc; 3825 ftrace_graph_return = retfunc;
3826 ftrace_graph_entry = entryfunc; 3826 ftrace_graph_entry = entryfunc;
3827 3827
3828 ftrace_startup(FTRACE_START_FUNC_RET); 3828 ftrace_startup(&global_ops, FTRACE_START_FUNC_RET);
3829 3829
3830out: 3830out:
3831 mutex_unlock(&ftrace_lock); 3831 mutex_unlock(&ftrace_lock);
@@ -3842,7 +3842,7 @@ void unregister_ftrace_graph(void)
3842 ftrace_graph_active--; 3842 ftrace_graph_active--;
3843 ftrace_graph_return = (trace_func_graph_ret_t)ftrace_stub; 3843 ftrace_graph_return = (trace_func_graph_ret_t)ftrace_stub;
3844 ftrace_graph_entry = ftrace_graph_entry_stub; 3844 ftrace_graph_entry = ftrace_graph_entry_stub;
3845 ftrace_shutdown(FTRACE_STOP_FUNC_RET); 3845 ftrace_shutdown(&global_ops, FTRACE_STOP_FUNC_RET);
3846 unregister_pm_notifier(&ftrace_suspend_notifier); 3846 unregister_pm_notifier(&ftrace_suspend_notifier);
3847 unregister_trace_sched_switch(ftrace_graph_probe_sched_switch, NULL); 3847 unregister_trace_sched_switch(ftrace_graph_probe_sched_switch, NULL);
3848 3848