1 /* SPDX-License-Identifier: GPL-2.0 */
57 			  struct trace_event *event);
62  * The trace entry - the most basic unit of tracing. This is what
65  *     bash-15816 [01]   235.197585: idle_cpu <- irq_enter
75 	((1 << (sizeof(((struct trace_entry *)0)->type) * 8)) - 1)
78  * Trace iterator - used by printout routines who present trace
126 				      int flags, struct trace_event *event);
142 extern int register_trace_event(struct trace_event *event);
143 extern int unregister_trace_event(struct trace_event *event);
177 int trace_output_call(struct trace_iterator *iter, char *name, char *fmt, ...);
207 			const char *name;  member
223 	int			(*reg)(struct trace_event_call *event,
231 extern int trace_event_reg(struct trace_event_call *event,
236 	struct ring_buffer_event	*event;  member
261  * Event flags:
262  *  FILTERED	  - The event has a filter attached
263  *  CAP_ANY	  - Any user can enable for perf
264  *  NO_SET_FILTER - Set when filter has error and is to be ignored
265  *  IGNORE_ENABLE - For trace internal events, do not enable with debugfs file
266  *  TRACEPOINT    - Event is a tracepoint
267  *  KPROBE        - Event is a kprobe
268  *  UPROBE        - Event is a uprobe
286 		char			*name;  member
290 	struct trace_event	event;  member
299 	 *   bit 3:		trace internal event (do not enable)
300 	 *   bit 4:		Event was enabled by module
302 	 *   bit 6:		Event is a tracepoint
320 	 * This inline function checks whether call->prog_array  in bpf_prog_array_valid()
324 	 * If this function returns true, and later call->prog_array  in bpf_prog_array_valid()
329 	 * call->prog_array happened to become non-NULL then.  in bpf_prog_array_valid()
336 	return !!READ_ONCE(call->prog_array);  in bpf_prog_array_valid()
343 	if (call->flags & TRACE_EVENT_FL_TRACEPOINT)  in trace_event_name()
344 		return call->tp ? call->tp->name : NULL;  in trace_event_name()
346 		return call->name;  in trace_event_name()
352 	if (!event_call->class->get_fields)  in trace_get_fields()
353 		return &event_call->class->fields;  in trace_get_fields()
354 	return event_call->class->get_fields(event_call);  in trace_get_fields()
377 						     const char *event);
403 extern int synth_event_delete(const char *name);
409 				       const char *name,
412 #define synth_event_gen_cmd_start(cmd, name, mod, ...)	\  argument
413 	__synth_event_gen_cmd_start(cmd, name, mod, ## __VA_ARGS__, NULL)
417 	const char *name;  member
421 					   const char *name,
425 extern int synth_event_create(const char *name,
431 				 const char *name);
447 	struct synth_event *event;  member
467 extern int kprobe_event_delete(const char *name);
472 #define kprobe_event_gen_cmd_start(cmd, name, loc, ...)			\  argument
473 	__kprobe_event_gen_cmd_start(cmd, false, name, loc, ## __VA_ARGS__, NULL)
475 #define kretprobe_event_gen_cmd_start(cmd, name, loc, ...)		\  argument
476 	__kprobe_event_gen_cmd_start(cmd, true, name, loc, ## __VA_ARGS__, NULL)
480 					const char *name,
498  * Event file flags:
499  *  ENABLED	  - The event is enabled
500  *  RECORDED_CMD  - The comms should be recorded at sched_switch
501  *  RECORDED_TGID - The tgids should be recorded at sched_switch
502  *  FILTERED	  - The event has a filter attached
503  *  NO_SET_FILTER - Set when filter has error and is to be ignored
504  *  SOFT_MODE     - The event is enabled/disabled by SOFT_DISABLED
505  *  SOFT_DISABLED - When set, do not trace the event (even though its
507  *  TRIGGER_MODE  - When set, invoke the triggers associated with the event
508  *  TRIGGER_COND  - When set, one or more triggers has an associated filter
509  *  PID_FILTER    - When set, the event is filtered based on pid
510  *  WAS_ENABLED   - Set when enabled to know to clear trace on module removal
511  *  FREED         - File descriptor is freed, all fields should be considered invalid
551 	 * caching and such. Which is mostly OK ;-)
555 	atomic_t		sm_ref;	/* soft-mode reference counter */
556 	atomic_t		tm_ref;	/* trigger-mode reference counter */
559 #define __TRACE_EVENT_FLAGS(name, value)				\  argument
560 	static int __init trace_init_flags_##name(void)			\
562 		event_##name.flags |= value;				\
565 	early_initcall(trace_init_flags_##name);
567 #define __TRACE_EVENT_PERF_PERM(name, expr...)				\  argument
568 	static int perf_perm_##name(struct trace_event_call *tp_event, \
573 	static int __init trace_init_perf_perm_##name(void)		\
575 		event_##name.perf_perm = &perf_perm_##name;		\
578 	early_initcall(trace_init_perf_perm_##name);
598 		    struct ring_buffer_event *event);
606  * trace_trigger_soft_disabled - do triggers and test if soft disabled
607  * @file: The file pointer of the event to test
609  * If any triggers without filters are attached to this event, they
610  * will be called here. If the event is soft disabled and has no
617 	unsigned long eflags = file->flags;  in trace_trigger_soft_disabled()
632 int perf_event_attach_bpf_prog(struct perf_event *event, struct bpf_prog *prog);
633 void perf_event_detach_bpf_prog(struct perf_event *event);
634 int perf_event_query_prog_array(struct perf_event *event, void __user *info);
637 struct bpf_raw_event_map *bpf_get_raw_tracepoint(const char *name);
639 int bpf_get_perf_event_info(const struct perf_event *event, u32 *prog_id,
649 perf_event_attach_bpf_prog(struct perf_event *event, struct bpf_prog *prog)  in perf_event_attach_bpf_prog()  argument
651 	return -EOPNOTSUPP;  in perf_event_attach_bpf_prog()
654 static inline void perf_event_detach_bpf_prog(struct perf_event *event) { }  in perf_event_detach_bpf_prog()  argument
657 perf_event_query_prog_array(struct perf_event *event, void __user *info)  in perf_event_query_prog_array()  argument
659 	return -EOPNOTSUPP;  in perf_event_query_prog_array()
663 	return -EOPNOTSUPP;  in bpf_probe_register()
667 	return -EOPNOTSUPP;  in bpf_probe_unregister()
669 static inline struct bpf_raw_event_map *bpf_get_raw_tracepoint(const char *name)  in bpf_get_raw_tracepoint()  argument
676 static inline int bpf_get_perf_event_info(const struct perf_event *event,  in bpf_get_perf_event_info()  argument
681 	return -EOPNOTSUPP;  in bpf_get_perf_event_info()
697 			      const char *name, int offset, int size,
703 #define is_signed_type(type)	(((type)(-1)) < (type)1)
706 int trace_set_clr_event(const char *system, const char *event, int set);
708 		const char *event, bool enable);
734 extern int  perf_trace_init(struct perf_event *event);
735 extern void perf_trace_destroy(struct perf_event *event);
736 extern int  perf_trace_add(struct perf_event *event, int flags);
737 extern void perf_trace_del(struct perf_event *event, int flags);
739 extern int  perf_kprobe_init(struct perf_event *event, bool is_retprobe);
740 extern void perf_kprobe_destroy(struct perf_event *event);
741 extern int bpf_get_kprobe_info(const struct perf_event *event,
747 extern int  perf_uprobe_init(struct perf_event *event,
749 extern void perf_uprobe_destroy(struct perf_event *event);
750 extern int bpf_get_uprobe_info(const struct perf_event *event,
755 extern int  ftrace_profile_set_filter(struct perf_event *event, int event_id,
757 extern void ftrace_profile_free_filter(struct perf_event *event);