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ftrace_internal.h


products/Sources/formale Sprachen/C/Linux/kernel/trace/ftrace_internal.h

/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_KERNEL_FTRACE_INTERNAL_H #define _LINUX_KERNEL_FTRACE_INTERNAL_H int __register_ftrace_function(struct ftrace_ops *ops); int __unregister_ftrace_function(struct ftrace_ops *ops); #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); int ftrace_startup_subops(struct ftrace_ops *ops, struct ftrace_ops *subops, int command); int ftrace_shutdown_subops(struct ftrace_ops *ops, struct ftrace_ops *subops, int command); #else /* !CONFIG_DYNAMIC_FTRACE */ /* 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; } static inline int ftrace_startup_subops(struct ftrace_ops *ops, struct ftrace_ops *subops, int command) { return -EINVAL; } static inline int ftrace_shutdown_subops(struct ftrace_ops *ops, struct ftrace_ops *subops, int command) { return -EINVAL; } #endif /* CONFIG_DYNAMIC_FTRACE */ #ifdef CONFIG_FUNCTION_GRAPH_TRACER extern int ftrace_graph_active; # ifdef CONFIG_DYNAMIC_FTRACE extern void fgraph_update_pid_func(void); # else static inline void fgraph_update_pid_func(void) {} # endif #else /* !CONFIG_FUNCTION_GRAPH_TRACER */ # define ftrace_graph_active 0 static inline void fgraph_update_pid_func(void) {} #endif /* CONFIG_FUNCTION_GRAPH_TRACER */ #else /* !CONFIG_FUNCTION_TRACER */ #endif /* CONFIG_FUNCTION_TRACER */ #endif

                                                                                                                                                                                                                                                                                                                                                                                                     

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