/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_KERNEL_FTRACE_INTERNAL_H #define _LINUX_KERNEL_FTRACE_INTERNAL_H #ifdef CONFIG_FUNCTION_TRACER extern struct mutex ftrace_lock; extern struct ftrace_ops global_ops; #ifdef CONFIG_DYNAMIC_FTRACE int ftrace_startup(struct ftrace_ops *ops, int command); int ftrace_shutdown(struct ftrace_ops *ops, int command); int ftrace_ops_test(struct ftrace_ops *ops, unsigned long ip, void *regs); #else /* !CONFIG_DYNAMIC_FTRACE */ int __register_ftrace_function(struct ftrace_ops *ops); int __unregister_ftrace_function(struct ftrace_ops *ops); /* Keep as macros so we do not need to define the commands */ # define ftrace_startup(ops, command) \ ({ \ int ___ret = __register_ftrace_function(ops); \ if (!___ret) \ (ops)->flags |= FTRACE_OPS_FL_ENABLED; \ ___ret; \ }) # define ftrace_shutdown(ops, command) \ ({ \ int ___ret = __unregister_ftrace_function(ops); \ if (!___ret) \ (ops)->flags &= ~FTRACE_OPS_FL_ENABLED; \ ___ret; \ }) static inline int ftrace_ops_test(struct ftrace_ops *ops, unsigned long ip, void *regs) { return 1; } #endif /* CONFIG_DYNAMIC_FTRACE */ #ifdef CONFIG_FUNCTION_GRAPH_TRACER extern int ftrace_graph_active; void update_function_graph_func(void); #else /* !CONFIG_FUNCTION_GRAPH_TRACER */ # define ftrace_graph_active 0 static inline void update_function_graph_func(void) { } #endif /* CONFIG_FUNCTION_GRAPH_TRACER */ #else /* !CONFIG_FUNCTION_TRACER */ #endif /* CONFIG_FUNCTION_TRACER */ #endif