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);
159 	entry->preempt_count		= trace_ctx & 0xff;  in tracing_generic_entry_update()
160 	entry->pid			= current->pid;  in tracing_generic_entry_update()
161 	entry->type			= type;  in tracing_generic_entry_update()
162 	entry->flags =			trace_ctx >> 16;  in tracing_generic_entry_update()
213 		trace_ctx--;  in tracing_gen_ctx_dec()
235 int trace_output_call(struct trace_iterator *iter, char *name, char *fmt, ...);
265 			const char *name;  member
281 	int			(*reg)(struct trace_event_call *event,
289 extern int trace_event_reg(struct trace_event_call *event,
294 	struct ring_buffer_event	*event;  member
320  * Event flags:
321  *  FILTERED	  - The event has a filter attached
322  *  CAP_ANY	  - Any user can enable for perf
323  *  NO_SET_FILTER - Set when filter has error and is to be ignored
324  *  IGNORE_ENABLE - For trace internal events, do not enable with debugfs file
325  *  TRACEPOINT    - Event is a tracepoint
326  *  DYNAMIC       - Event is a dynamic event (created at run time)
327  *  KPROBE        - Event is a kprobe
328  *  UPROBE        - Event is a uprobe
329  *  EPROBE        - Event is an event probe
349 		char			*name;  member
353 	struct trace_event	event;  member
401 	if (call->flags & TRACE_EVENT_FL_DYNAMIC)  in trace_event_try_get_ref()
404 		return try_module_get(call->module);  in trace_event_try_get_ref()
409 	if (call->flags & TRACE_EVENT_FL_DYNAMIC)  in trace_event_put_ref()
412 		module_put(call->module);  in trace_event_put_ref()
419 	 * This inline function checks whether call->prog_array  in bpf_prog_array_valid()
423 	 * If this function returns true, and later call->prog_array  in bpf_prog_array_valid()
428 	 * call->prog_array happened to become non-NULL then.  in bpf_prog_array_valid()
435 	return !!READ_ONCE(call->prog_array);  in bpf_prog_array_valid()
442 	if (call->flags & TRACE_EVENT_FL_TRACEPOINT)  in trace_event_name()
443 		return call->tp ? call->tp->name : NULL;  in trace_event_name()
445 		return call->name;  in trace_event_name()
451 	if (!event_call->class->get_fields)  in trace_get_fields()
452 		return &event_call->class->fields;  in trace_get_fields()
453 	return event_call->class->get_fields(event_call);  in trace_get_fields()
474 						     const char *event);
500 extern int synth_event_delete(const char *name);
506 				       const char *name,
509 #define synth_event_gen_cmd_start(cmd, name, mod, ...)	\  argument
510 	__synth_event_gen_cmd_start(cmd, name, mod, ## __VA_ARGS__, NULL)
514 	const char *name;  member
518 					   const char *name,
522 extern int synth_event_create(const char *name,
528 				 const char *name);
544 	struct synth_event *event;  member
564 extern int kprobe_event_delete(const char *name);
569 #define kprobe_event_gen_cmd_start(cmd, name, loc, ...)			\  argument
570 	__kprobe_event_gen_cmd_start(cmd, false, name, loc, ## __VA_ARGS__, NULL)
572 #define kretprobe_event_gen_cmd_start(cmd, name, loc, ...)		\  argument
573 	__kprobe_event_gen_cmd_start(cmd, true, name, loc, ## __VA_ARGS__, NULL)
577 					const char *name,
595  * Event file flags:
596  *  ENABLED	  - The event is enabled
597  *  RECORDED_CMD  - The comms should be recorded at sched_switch
598  *  RECORDED_TGID - The tgids should be recorded at sched_switch
599  *  FILTERED	  - The event has a filter attached
600  *  NO_SET_FILTER - Set when filter has error and is to be ignored
601  *  SOFT_MODE     - The event is enabled/disabled by SOFT_DISABLED
602  *  SOFT_DISABLED - When set, do not trace the event (even though its
604  *  TRIGGER_MODE  - When set, invoke the triggers associated with the event
605  *  TRIGGER_COND  - When set, one or more triggers has an associated filter
606  *  PID_FILTER    - When set, the event is filtered based on pid
607  *  WAS_ENABLED   - Set when enabled to know to clear trace on module removal
646 	 * caching and such. Which is mostly OK ;-)
649 	atomic_t		sm_ref;	/* soft-mode reference counter */
650 	atomic_t		tm_ref;	/* trigger-mode reference counter */
653 #define __TRACE_EVENT_FLAGS(name, value)				\  argument
654 	static int __init trace_init_flags_##name(void)			\
656 		event_##name.flags |= value;				\
659 	early_initcall(trace_init_flags_##name);
661 #define __TRACE_EVENT_PERF_PERM(name, expr...)				\  argument
662 	static int perf_perm_##name(struct trace_event_call *tp_event, \
667 	static int __init trace_init_perf_perm_##name(void)		\
669 		event_##name.perf_perm = &perf_perm_##name;		\
672 	early_initcall(trace_init_perf_perm_##name);
694 		    struct ring_buffer_event *event);
702  * trace_trigger_soft_disabled - do triggers and test if soft disabled
703  * @file: The file pointer of the event to test
705  * If any triggers without filters are attached to this event, they
706  * will be called here. If the event is soft disabled and has no
713 	unsigned long eflags = file->flags;  in trace_trigger_soft_disabled()
728 int perf_event_attach_bpf_prog(struct perf_event *event, struct bpf_prog *prog, u64 bpf_cookie);
729 void perf_event_detach_bpf_prog(struct perf_event *event);
730 int perf_event_query_prog_array(struct perf_event *event, void __user *info);
733 struct bpf_raw_event_map *bpf_get_raw_tracepoint(const char *name);
735 int bpf_get_perf_event_info(const struct perf_event *event, u32 *prog_id,
745 perf_event_attach_bpf_prog(struct perf_event *event, struct bpf_prog *prog, u64 bpf_cookie)  in perf_event_attach_bpf_prog()  argument
747 	return -EOPNOTSUPP;  in perf_event_attach_bpf_prog()
750 static inline void perf_event_detach_bpf_prog(struct perf_event *event) { }  in perf_event_detach_bpf_prog()  argument
753 perf_event_query_prog_array(struct perf_event *event, void __user *info)  in perf_event_query_prog_array()  argument
755 	return -EOPNOTSUPP;  in perf_event_query_prog_array()
759 	return -EOPNOTSUPP;  in bpf_probe_register()
763 	return -EOPNOTSUPP;  in bpf_probe_unregister()
765 static inline struct bpf_raw_event_map *bpf_get_raw_tracepoint(const char *name)  in bpf_get_raw_tracepoint()  argument
772 static inline int bpf_get_perf_event_info(const struct perf_event *event,  in bpf_get_perf_event_info()  argument
777 	return -EOPNOTSUPP;  in bpf_get_perf_event_info()
793 			      const char *name, int offset, int size,
799 #define is_signed_type(type)	(((type)(-1)) < (type)1)
802 int trace_set_clr_event(const char *system, const char *event, int set);
804 		const char *event, bool enable);
830 extern int  perf_trace_init(struct perf_event *event);
831 extern void perf_trace_destroy(struct perf_event *event);
832 extern int  perf_trace_add(struct perf_event *event, int flags);
833 extern void perf_trace_del(struct perf_event *event, int flags);
835 extern int  perf_kprobe_init(struct perf_event *event, bool is_retprobe);
836 extern void perf_kprobe_destroy(struct perf_event *event);
837 extern int bpf_get_kprobe_info(const struct perf_event *event,
843 extern int  perf_uprobe_init(struct perf_event *event,
845 extern void perf_uprobe_destroy(struct perf_event *event);
846 extern int bpf_get_uprobe_info(const struct perf_event *event,
850 extern int  ftrace_profile_set_filter(struct perf_event *event, int event_id,
852 extern void ftrace_profile_free_filter(struct perf_event *event);
856 int perf_event_set_bpf_prog(struct perf_event *event, struct bpf_prog *prog, u64 bpf_cookie);
857 void perf_event_free_bpf_prog(struct perf_event *event);