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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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C
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#define TRACE_EXPORT_FUNCTION BIT(0)#define TRACE_EXPORT_EVENT BIT(1)#define TRACE_EXPORT_MARKER BIT(2)
/* * The trace export - an export of Ftrace output. The trace_export * can process traces and export them to a registered destination as * an addition to the current only output of Ftrace - i.e. ring buffer. * * If you want traces to be sent to some other place rather than ring * buffer only, just need to register a new trace_export and implement * its own .write() function for writing traces to the storage. * * next - pointer to the next trace_export * write - copy traces which have been delt with ->commit() to * the destination * flags - which ftrace to be exported */struct trace_export { struct trace_export __rcu *next; void (*write)(struct trace_export *, const void *, unsigned int); int flags;};
struct trace_array;
#ifdef CONFIG_TRACING
int register_ftrace_export(struct trace_export *export);int unregister_ftrace_export(struct trace_export *export);
/** * trace_array_puts - write a constant string into the trace buffer. * @tr: The trace array to write to * @str: The constant string to write */#define trace_array_puts(tr, str) \ ({ \ str ? __trace_array_puts(tr, _THIS_IP_, str, strlen(str)) : -1; \ })int __trace_array_puts(struct trace_array *tr, unsigned long ip, const char *str, int size);
void trace_printk_init_buffers(void);__printf(3, 4)int trace_array_printk(struct trace_array *tr, unsigned long ip, const char *fmt, ...);int trace_array_init_printk(struct trace_array *tr);void trace_array_put(struct trace_array *tr);struct trace_array *trace_array_get_by_name(const char *name, const char *systems);int trace_array_destroy(struct trace_array *tr);
/* For osnoise tracer */int osnoise_arch_register(void);void osnoise_arch_unregister(void);void osnoise_trace_irq_entry(int id);void osnoise_trace_irq_exit(int id, const char *desc);
#else /* CONFIG_TRACING */static inline int register_ftrace_export(struct trace_export *export){ return -EINVAL;}static inline int unregister_ftrace_export(struct trace_export *export){ return 0;}static inline void trace_printk_init_buffers(void){}static inline __printf(3, 4)int trace_array_printk(struct trace_array *tr, unsigned long ip, const char *fmt, ...){ return 0;}static inline int trace_array_init_printk(struct trace_array *tr){ return -EINVAL;}static inline void trace_array_put(struct trace_array *tr){}static inline struct trace_array *trace_array_get_by_name(const char *name, const char *systems){ return NULL;}static inline int trace_array_destroy(struct trace_array *tr){ return 0;}#endif /* CONFIG_TRACING */
#endif /* _LINUX_TRACE_H */