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3306fc4a SRV |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _LINUX_KERNEL_FTRACE_INTERNAL_H | |
3 | #define _LINUX_KERNEL_FTRACE_INTERNAL_H | |
4 | ||
7d8b31b7 AB |
5 | int __register_ftrace_function(struct ftrace_ops *ops); |
6 | int __unregister_ftrace_function(struct ftrace_ops *ops); | |
7 | ||
3306fc4a SRV |
8 | #ifdef CONFIG_FUNCTION_TRACER |
9 | ||
3306fc4a SRV |
10 | extern struct mutex ftrace_lock; |
11 | extern struct ftrace_ops global_ops; | |
12 | ||
13 | #ifdef CONFIG_DYNAMIC_FTRACE | |
14 | ||
15 | int ftrace_startup(struct ftrace_ops *ops, int command); | |
16 | int ftrace_shutdown(struct ftrace_ops *ops, int command); | |
17 | int ftrace_ops_test(struct ftrace_ops *ops, unsigned long ip, void *regs); | |
18 | ||
19 | #else /* !CONFIG_DYNAMIC_FTRACE */ | |
20 | ||
3306fc4a SRV |
21 | /* Keep as macros so we do not need to define the commands */ |
22 | # define ftrace_startup(ops, command) \ | |
23 | ({ \ | |
24 | int ___ret = __register_ftrace_function(ops); \ | |
25 | if (!___ret) \ | |
26 | (ops)->flags |= FTRACE_OPS_FL_ENABLED; \ | |
27 | ___ret; \ | |
28 | }) | |
29 | # define ftrace_shutdown(ops, command) \ | |
30 | ({ \ | |
31 | int ___ret = __unregister_ftrace_function(ops); \ | |
32 | if (!___ret) \ | |
33 | (ops)->flags &= ~FTRACE_OPS_FL_ENABLED; \ | |
34 | ___ret; \ | |
35 | }) | |
36 | static inline int | |
37 | ftrace_ops_test(struct ftrace_ops *ops, unsigned long ip, void *regs) | |
38 | { | |
39 | return 1; | |
40 | } | |
41 | #endif /* CONFIG_DYNAMIC_FTRACE */ | |
42 | ||
43 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER | |
44 | extern int ftrace_graph_active; | |
45 | void update_function_graph_func(void); | |
46 | #else /* !CONFIG_FUNCTION_GRAPH_TRACER */ | |
47 | # define ftrace_graph_active 0 | |
48 | static inline void update_function_graph_func(void) { } | |
49 | #endif /* CONFIG_FUNCTION_GRAPH_TRACER */ | |
50 | ||
51 | #else /* !CONFIG_FUNCTION_TRACER */ | |
52 | #endif /* CONFIG_FUNCTION_TRACER */ | |
53 | ||
54 | #endif |