1
2#ifndef _LINUX_FTRACE_EVENT_H
3#define _LINUX_FTRACE_EVENT_H
4
5#include <linux/ring_buffer.h>
6#include <linux/trace_seq.h>
7#include <linux/percpu.h>
8#include <linux/hardirq.h>
9#include <linux/perf_event.h>
10#include <linux/tracepoint.h>
11
12struct trace_array;
13struct trace_buffer;
14struct tracer;
15struct dentry;
16struct bpf_prog;
17
18struct trace_print_flags {
19	unsigned long		mask;
20	const char		*name;
21};
22
23struct trace_print_flags_u64 {
24	unsigned long long	mask;
25	const char		*name;
26};
27
28const char *ftrace_print_flags_seq(struct trace_seq *p, const char *delim,
29				   unsigned long flags,
30				   const struct trace_print_flags *flag_array);
31
32const char *ftrace_print_symbols_seq(struct trace_seq *p, unsigned long val,
33				     const struct trace_print_flags *symbol_array);
34
35#if BITS_PER_LONG == 32
36const char *ftrace_print_symbols_seq_u64(struct trace_seq *p,
37					 unsigned long long val,
38					 const struct trace_print_flags_u64
39								 *symbol_array);
40#endif
41
42const char *ftrace_print_bitmask_seq(struct trace_seq *p, void *bitmask_ptr,
43				     unsigned int bitmask_size);
44
45const char *ftrace_print_hex_seq(struct trace_seq *p,
46				 const unsigned char *buf, int len);
47
48const char *ftrace_print_array_seq(struct trace_seq *p,
49				   const void *buf, int count,
50				   size_t el_size);
51
52struct trace_iterator;
53struct trace_event;
54
55int ftrace_raw_output_prep(struct trace_iterator *iter,
56			   struct trace_event *event);
57
58/*
59 * The trace entry - the most basic unit of tracing. This is what
60 * is printed in the end as a single line in the trace output, such as:
61 *
62 *     bash-15816 [01]   235.197585: idle_cpu <- irq_enter
63 */
64struct trace_entry {
65	unsigned short		type;
66	unsigned char		flags;
67	unsigned char		preempt_count;
68	int			pid;
69};
70
71#define FTRACE_MAX_EVENT						\
72	((1 << (sizeof(((struct trace_entry *)0)->type) * 8)) - 1)
73
74/*
75 * Trace iterator - used by printout routines who present trace
76 * results to users and which routines might sleep, etc:
77 */
78struct trace_iterator {
79	struct trace_array	*tr;
80	struct tracer		*trace;
81	struct trace_buffer	*trace_buffer;
82	void			*private;
83	int			cpu_file;
84	struct mutex		mutex;
85	struct ring_buffer_iter	**buffer_iter;
86	unsigned long		iter_flags;
87
88	/* trace_seq for __print_flags() and __print_symbolic() etc. */
89	struct trace_seq	tmp_seq;
90
91	cpumask_var_t		started;
92
93	/* it's true when current open file is snapshot */
94	bool			snapshot;
95
96	/* The below is zeroed out in pipe_read */
97	struct trace_seq	seq;
98	struct trace_entry	*ent;
99	unsigned long		lost_events;
100	int			leftover;
101	int			ent_size;
102	int			cpu;
103	u64			ts;
104
105	loff_t			pos;
106	long			idx;
107
108	/* All new field here will be zeroed out in pipe_read */
109};
110
111enum trace_iter_flags {
112	TRACE_FILE_LAT_FMT	= 1,
113	TRACE_FILE_ANNOTATE	= 2,
114	TRACE_FILE_TIME_IN_NS	= 4,
115};
116
117
118typedef enum print_line_t (*trace_print_func)(struct trace_iterator *iter,
119				      int flags, struct trace_event *event);
120
121struct trace_event_functions {
122	trace_print_func	trace;
123	trace_print_func	raw;
124	trace_print_func	hex;
125	trace_print_func	binary;
126};
127
128struct trace_event {
129	struct hlist_node		node;
130	struct list_head		list;
131	int				type;
132	struct trace_event_functions	*funcs;
133};
134
135extern int register_ftrace_event(struct trace_event *event);
136extern int unregister_ftrace_event(struct trace_event *event);
137
138/* Return values for print_line callback */
139enum print_line_t {
140	TRACE_TYPE_PARTIAL_LINE	= 0,	/* Retry after flushing the seq */
141	TRACE_TYPE_HANDLED	= 1,
142	TRACE_TYPE_UNHANDLED	= 2,	/* Relay to other output functions */
143	TRACE_TYPE_NO_CONSUME	= 3	/* Handled but ask to not consume */
144};
145
146/*
147 * Several functions return TRACE_TYPE_PARTIAL_LINE if the trace_seq
148 * overflowed, and TRACE_TYPE_HANDLED otherwise. This helper function
149 * simplifies those functions and keeps them in sync.
150 */
151static inline enum print_line_t trace_handle_return(struct trace_seq *s)
152{
153	return trace_seq_has_overflowed(s) ?
154		TRACE_TYPE_PARTIAL_LINE : TRACE_TYPE_HANDLED;
155}
156
157void tracing_generic_entry_update(struct trace_entry *entry,
158				  unsigned long flags,
159				  int pc);
160struct ftrace_event_file;
161
162struct ring_buffer_event *
163trace_event_buffer_lock_reserve(struct ring_buffer **current_buffer,
164				struct ftrace_event_file *ftrace_file,
165				int type, unsigned long len,
166				unsigned long flags, int pc);
167struct ring_buffer_event *
168trace_current_buffer_lock_reserve(struct ring_buffer **current_buffer,
169				  int type, unsigned long len,
170				  unsigned long flags, int pc);
171void trace_current_buffer_unlock_commit(struct ring_buffer *buffer,
172					struct ring_buffer_event *event,
173					unsigned long flags, int pc);
174void trace_buffer_unlock_commit(struct ring_buffer *buffer,
175				struct ring_buffer_event *event,
176				unsigned long flags, int pc);
177void trace_buffer_unlock_commit_regs(struct ring_buffer *buffer,
178				     struct ring_buffer_event *event,
179				     unsigned long flags, int pc,
180				     struct pt_regs *regs);
181void trace_current_buffer_discard_commit(struct ring_buffer *buffer,
182					 struct ring_buffer_event *event);
183
184void tracing_record_cmdline(struct task_struct *tsk);
185
186int ftrace_output_call(struct trace_iterator *iter, char *name, char *fmt, ...);
187
188struct event_filter;
189
190enum trace_reg {
191	TRACE_REG_REGISTER,
192	TRACE_REG_UNREGISTER,
193#ifdef CONFIG_PERF_EVENTS
194	TRACE_REG_PERF_REGISTER,
195	TRACE_REG_PERF_UNREGISTER,
196	TRACE_REG_PERF_OPEN,
197	TRACE_REG_PERF_CLOSE,
198	TRACE_REG_PERF_ADD,
199	TRACE_REG_PERF_DEL,
200#endif
201};
202
203struct ftrace_event_call;
204
205struct ftrace_event_class {
206	const char		*system;
207	void			*probe;
208#ifdef CONFIG_PERF_EVENTS
209	void			*perf_probe;
210#endif
211	int			(*reg)(struct ftrace_event_call *event,
212				       enum trace_reg type, void *data);
213	int			(*define_fields)(struct ftrace_event_call *);
214	struct list_head	*(*get_fields)(struct ftrace_event_call *);
215	struct list_head	fields;
216	int			(*raw_init)(struct ftrace_event_call *);
217};
218
219extern int ftrace_event_reg(struct ftrace_event_call *event,
220			    enum trace_reg type, void *data);
221
222int ftrace_output_event(struct trace_iterator *iter, struct ftrace_event_call *event,
223			char *fmt, ...);
224
225int ftrace_event_define_field(struct ftrace_event_call *call,
226			      char *type, int len, char *item, int offset,
227			      int field_size, int sign, int filter);
228
229struct ftrace_event_buffer {
230	struct ring_buffer		*buffer;
231	struct ring_buffer_event	*event;
232	struct ftrace_event_file	*ftrace_file;
233	void				*entry;
234	unsigned long			flags;
235	int				pc;
236};
237
238void *ftrace_event_buffer_reserve(struct ftrace_event_buffer *fbuffer,
239				  struct ftrace_event_file *ftrace_file,
240				  unsigned long len);
241
242void ftrace_event_buffer_commit(struct ftrace_event_buffer *fbuffer);
243
244int ftrace_event_define_field(struct ftrace_event_call *call,
245			      char *type, int len, char *item, int offset,
246			      int field_size, int sign, int filter);
247
248enum {
249	TRACE_EVENT_FL_FILTERED_BIT,
250	TRACE_EVENT_FL_CAP_ANY_BIT,
251	TRACE_EVENT_FL_NO_SET_FILTER_BIT,
252	TRACE_EVENT_FL_IGNORE_ENABLE_BIT,
253	TRACE_EVENT_FL_WAS_ENABLED_BIT,
254	TRACE_EVENT_FL_USE_CALL_FILTER_BIT,
255	TRACE_EVENT_FL_TRACEPOINT_BIT,
256	TRACE_EVENT_FL_KPROBE_BIT,
257};
258
259/*
260 * Event flags:
261 *  FILTERED	  - The event has a filter attached
262 *  CAP_ANY	  - Any user can enable for perf
263 *  NO_SET_FILTER - Set when filter has error and is to be ignored
264 *  IGNORE_ENABLE - For ftrace internal events, do not enable with debugfs file
265 *  WAS_ENABLED   - Set and stays set when an event was ever enabled
266 *                    (used for module unloading, if a module event is enabled,
267 *                     it is best to clear the buffers that used it).
268 *  USE_CALL_FILTER - For ftrace internal events, don't use file filter
269 *  TRACEPOINT    - Event is a tracepoint
270 *  KPROBE        - Event is a kprobe
271 */
272enum {
273	TRACE_EVENT_FL_FILTERED		= (1 << TRACE_EVENT_FL_FILTERED_BIT),
274	TRACE_EVENT_FL_CAP_ANY		= (1 << TRACE_EVENT_FL_CAP_ANY_BIT),
275	TRACE_EVENT_FL_NO_SET_FILTER	= (1 << TRACE_EVENT_FL_NO_SET_FILTER_BIT),
276	TRACE_EVENT_FL_IGNORE_ENABLE	= (1 << TRACE_EVENT_FL_IGNORE_ENABLE_BIT),
277	TRACE_EVENT_FL_WAS_ENABLED	= (1 << TRACE_EVENT_FL_WAS_ENABLED_BIT),
278	TRACE_EVENT_FL_USE_CALL_FILTER	= (1 << TRACE_EVENT_FL_USE_CALL_FILTER_BIT),
279	TRACE_EVENT_FL_TRACEPOINT	= (1 << TRACE_EVENT_FL_TRACEPOINT_BIT),
280	TRACE_EVENT_FL_KPROBE		= (1 << TRACE_EVENT_FL_KPROBE_BIT),
281};
282
283struct ftrace_event_call {
284	struct list_head	list;
285	struct ftrace_event_class *class;
286	union {
287		char			*name;
288		/* Set TRACE_EVENT_FL_TRACEPOINT flag when using "tp" */
289		struct tracepoint	*tp;
290	};
291	struct trace_event	event;
292	char			*print_fmt;
293	struct event_filter	*filter;
294	void			*mod;
295	void			*data;
296	/*
297	 *   bit 0:		filter_active
298	 *   bit 1:		allow trace by non root (cap any)
299	 *   bit 2:		failed to apply filter
300	 *   bit 3:		ftrace internal event (do not enable)
301	 *   bit 4:		Event was enabled by module
302	 *   bit 5:		use call filter rather than file filter
303	 *   bit 6:		Event is a tracepoint
304	 */
305	int			flags; /* static flags of different events */
306
307#ifdef CONFIG_PERF_EVENTS
308	int				perf_refcount;
309	struct hlist_head __percpu	*perf_events;
310	struct bpf_prog			*prog;
311
312	int	(*perf_perm)(struct ftrace_event_call *,
313			     struct perf_event *);
314#endif
315};
316
317static inline const char *
318ftrace_event_name(struct ftrace_event_call *call)
319{
320	if (call->flags & TRACE_EVENT_FL_TRACEPOINT)
321		return call->tp ? call->tp->name : NULL;
322	else
323		return call->name;
324}
325
326struct trace_array;
327struct ftrace_subsystem_dir;
328
329enum {
330	FTRACE_EVENT_FL_ENABLED_BIT,
331	FTRACE_EVENT_FL_RECORDED_CMD_BIT,
332	FTRACE_EVENT_FL_FILTERED_BIT,
333	FTRACE_EVENT_FL_NO_SET_FILTER_BIT,
334	FTRACE_EVENT_FL_SOFT_MODE_BIT,
335	FTRACE_EVENT_FL_SOFT_DISABLED_BIT,
336	FTRACE_EVENT_FL_TRIGGER_MODE_BIT,
337	FTRACE_EVENT_FL_TRIGGER_COND_BIT,
338};
339
340/*
341 * Ftrace event file flags:
342 *  ENABLED	  - The event is enabled
343 *  RECORDED_CMD  - The comms should be recorded at sched_switch
344 *  FILTERED	  - The event has a filter attached
345 *  NO_SET_FILTER - Set when filter has error and is to be ignored
346 *  SOFT_MODE     - The event is enabled/disabled by SOFT_DISABLED
347 *  SOFT_DISABLED - When set, do not trace the event (even though its
348 *                   tracepoint may be enabled)
349 *  TRIGGER_MODE  - When set, invoke the triggers associated with the event
350 *  TRIGGER_COND  - When set, one or more triggers has an associated filter
351 */
352enum {
353	FTRACE_EVENT_FL_ENABLED		= (1 << FTRACE_EVENT_FL_ENABLED_BIT),
354	FTRACE_EVENT_FL_RECORDED_CMD	= (1 << FTRACE_EVENT_FL_RECORDED_CMD_BIT),
355	FTRACE_EVENT_FL_FILTERED	= (1 << FTRACE_EVENT_FL_FILTERED_BIT),
356	FTRACE_EVENT_FL_NO_SET_FILTER	= (1 << FTRACE_EVENT_FL_NO_SET_FILTER_BIT),
357	FTRACE_EVENT_FL_SOFT_MODE	= (1 << FTRACE_EVENT_FL_SOFT_MODE_BIT),
358	FTRACE_EVENT_FL_SOFT_DISABLED	= (1 << FTRACE_EVENT_FL_SOFT_DISABLED_BIT),
359	FTRACE_EVENT_FL_TRIGGER_MODE	= (1 << FTRACE_EVENT_FL_TRIGGER_MODE_BIT),
360	FTRACE_EVENT_FL_TRIGGER_COND	= (1 << FTRACE_EVENT_FL_TRIGGER_COND_BIT),
361};
362
363struct ftrace_event_file {
364	struct list_head		list;
365	struct ftrace_event_call	*event_call;
366	struct event_filter		*filter;
367	struct dentry			*dir;
368	struct trace_array		*tr;
369	struct ftrace_subsystem_dir	*system;
370	struct list_head		triggers;
371
372	/*
373	 * 32 bit flags:
374	 *   bit 0:		enabled
375	 *   bit 1:		enabled cmd record
376	 *   bit 2:		enable/disable with the soft disable bit
377	 *   bit 3:		soft disabled
378	 *   bit 4:		trigger enabled
379	 *
380	 * Note: The bits must be set atomically to prevent races
381	 * from other writers. Reads of flags do not need to be in
382	 * sync as they occur in critical sections. But the way flags
383	 * is currently used, these changes do not affect the code
384	 * except that when a change is made, it may have a slight
385	 * delay in propagating the changes to other CPUs due to
386	 * caching and such. Which is mostly OK ;-)
387	 */
388	unsigned long		flags;
389	atomic_t		sm_ref;	/* soft-mode reference counter */
390	atomic_t		tm_ref;	/* trigger-mode reference counter */
391};
392
393#define __TRACE_EVENT_FLAGS(name, value)				\
394	static int __init trace_init_flags_##name(void)			\
395	{								\
396		event_##name.flags |= value;				\
397		return 0;						\
398	}								\
399	early_initcall(trace_init_flags_##name);
400
401#define __TRACE_EVENT_PERF_PERM(name, expr...)				\
402	static int perf_perm_##name(struct ftrace_event_call *tp_event, \
403				    struct perf_event *p_event)		\
404	{								\
405		return ({ expr; });					\
406	}								\
407	static int __init trace_init_perf_perm_##name(void)		\
408	{								\
409		event_##name.perf_perm = &perf_perm_##name;		\
410		return 0;						\
411	}								\
412	early_initcall(trace_init_perf_perm_##name);
413
414#define PERF_MAX_TRACE_SIZE	2048
415
416#define MAX_FILTER_STR_VAL	256	/* Should handle KSYM_SYMBOL_LEN */
417
418enum event_trigger_type {
419	ETT_NONE		= (0),
420	ETT_TRACE_ONOFF		= (1 << 0),
421	ETT_SNAPSHOT		= (1 << 1),
422	ETT_STACKTRACE		= (1 << 2),
423	ETT_EVENT_ENABLE	= (1 << 3),
424};
425
426extern int filter_match_preds(struct event_filter *filter, void *rec);
427
428extern int filter_check_discard(struct ftrace_event_file *file, void *rec,
429				struct ring_buffer *buffer,
430				struct ring_buffer_event *event);
431extern int call_filter_check_discard(struct ftrace_event_call *call, void *rec,
432				     struct ring_buffer *buffer,
433				     struct ring_buffer_event *event);
434extern enum event_trigger_type event_triggers_call(struct ftrace_event_file *file,
435						   void *rec);
436extern void event_triggers_post_call(struct ftrace_event_file *file,
437				     enum event_trigger_type tt);
438
439/**
440 * ftrace_trigger_soft_disabled - do triggers and test if soft disabled
441 * @file: The file pointer of the event to test
442 *
443 * If any triggers without filters are attached to this event, they
444 * will be called here. If the event is soft disabled and has no
445 * triggers that require testing the fields, it will return true,
446 * otherwise false.
447 */
448static inline bool
449ftrace_trigger_soft_disabled(struct ftrace_event_file *file)
450{
451	unsigned long eflags = file->flags;
452
453	if (!(eflags & FTRACE_EVENT_FL_TRIGGER_COND)) {
454		if (eflags & FTRACE_EVENT_FL_TRIGGER_MODE)
455			event_triggers_call(file, NULL);
456		if (eflags & FTRACE_EVENT_FL_SOFT_DISABLED)
457			return true;
458	}
459	return false;
460}
461
462/*
463 * Helper function for event_trigger_unlock_commit{_regs}().
464 * If there are event triggers attached to this event that requires
465 * filtering against its fields, then they wil be called as the
466 * entry already holds the field information of the current event.
467 *
468 * It also checks if the event should be discarded or not.
469 * It is to be discarded if the event is soft disabled and the
470 * event was only recorded to process triggers, or if the event
471 * filter is active and this event did not match the filters.
472 *
473 * Returns true if the event is discarded, false otherwise.
474 */
475static inline bool
476__event_trigger_test_discard(struct ftrace_event_file *file,
477			     struct ring_buffer *buffer,
478			     struct ring_buffer_event *event,
479			     void *entry,
480			     enum event_trigger_type *tt)
481{
482	unsigned long eflags = file->flags;
483
484	if (eflags & FTRACE_EVENT_FL_TRIGGER_COND)
485		*tt = event_triggers_call(file, entry);
486
487	if (test_bit(FTRACE_EVENT_FL_SOFT_DISABLED_BIT, &file->flags))
488		ring_buffer_discard_commit(buffer, event);
489	else if (!filter_check_discard(file, entry, buffer, event))
490		return false;
491
492	return true;
493}
494
495/**
496 * event_trigger_unlock_commit - handle triggers and finish event commit
497 * @file: The file pointer assoctiated to the event
498 * @buffer: The ring buffer that the event is being written to
499 * @event: The event meta data in the ring buffer
500 * @entry: The event itself
501 * @irq_flags: The state of the interrupts at the start of the event
502 * @pc: The state of the preempt count at the start of the event.
503 *
504 * This is a helper function to handle triggers that require data
505 * from the event itself. It also tests the event against filters and
506 * if the event is soft disabled and should be discarded.
507 */
508static inline void
509event_trigger_unlock_commit(struct ftrace_event_file *file,
510			    struct ring_buffer *buffer,
511			    struct ring_buffer_event *event,
512			    void *entry, unsigned long irq_flags, int pc)
513{
514	enum event_trigger_type tt = ETT_NONE;
515
516	if (!__event_trigger_test_discard(file, buffer, event, entry, &tt))
517		trace_buffer_unlock_commit(buffer, event, irq_flags, pc);
518
519	if (tt)
520		event_triggers_post_call(file, tt);
521}
522
523/**
524 * event_trigger_unlock_commit_regs - handle triggers and finish event commit
525 * @file: The file pointer assoctiated to the event
526 * @buffer: The ring buffer that the event is being written to
527 * @event: The event meta data in the ring buffer
528 * @entry: The event itself
529 * @irq_flags: The state of the interrupts at the start of the event
530 * @pc: The state of the preempt count at the start of the event.
531 *
532 * This is a helper function to handle triggers that require data
533 * from the event itself. It also tests the event against filters and
534 * if the event is soft disabled and should be discarded.
535 *
536 * Same as event_trigger_unlock_commit() but calls
537 * trace_buffer_unlock_commit_regs() instead of trace_buffer_unlock_commit().
538 */
539static inline void
540event_trigger_unlock_commit_regs(struct ftrace_event_file *file,
541				 struct ring_buffer *buffer,
542				 struct ring_buffer_event *event,
543				 void *entry, unsigned long irq_flags, int pc,
544				 struct pt_regs *regs)
545{
546	enum event_trigger_type tt = ETT_NONE;
547
548	if (!__event_trigger_test_discard(file, buffer, event, entry, &tt))
549		trace_buffer_unlock_commit_regs(buffer, event,
550						irq_flags, pc, regs);
551
552	if (tt)
553		event_triggers_post_call(file, tt);
554}
555
556#ifdef CONFIG_BPF_SYSCALL
557unsigned int trace_call_bpf(struct bpf_prog *prog, void *ctx);
558#else
559static inline unsigned int trace_call_bpf(struct bpf_prog *prog, void *ctx)
560{
561	return 1;
562}
563#endif
564
565enum {
566	FILTER_OTHER = 0,
567	FILTER_STATIC_STRING,
568	FILTER_DYN_STRING,
569	FILTER_PTR_STRING,
570	FILTER_TRACE_FN,
571};
572
573extern int trace_event_raw_init(struct ftrace_event_call *call);
574extern int trace_define_field(struct ftrace_event_call *call, const char *type,
575			      const char *name, int offset, int size,
576			      int is_signed, int filter_type);
577extern int trace_add_event_call(struct ftrace_event_call *call);
578extern int trace_remove_event_call(struct ftrace_event_call *call);
579
580#define is_signed_type(type)	(((type)(-1)) < (type)1)
581
582int trace_set_clr_event(const char *system, const char *event, int set);
583
584/*
585 * The double __builtin_constant_p is because gcc will give us an error
586 * if we try to allocate the static variable to fmt if it is not a
587 * constant. Even with the outer if statement optimizing out.
588 */
589#define event_trace_printk(ip, fmt, args...)				\
590do {									\
591	__trace_printk_check_format(fmt, ##args);			\
592	tracing_record_cmdline(current);				\
593	if (__builtin_constant_p(fmt)) {				\
594		static const char *trace_printk_fmt			\
595		  __attribute__((section("__trace_printk_fmt"))) =	\
596			__builtin_constant_p(fmt) ? fmt : NULL;		\
597									\
598		__trace_bprintk(ip, trace_printk_fmt, ##args);		\
599	} else								\
600		__trace_printk(ip, fmt, ##args);			\
601} while (0)
602
603#ifdef CONFIG_PERF_EVENTS
604struct perf_event;
605
606DECLARE_PER_CPU(struct pt_regs, perf_trace_regs);
607
608extern int  perf_trace_init(struct perf_event *event);
609extern void perf_trace_destroy(struct perf_event *event);
610extern int  perf_trace_add(struct perf_event *event, int flags);
611extern void perf_trace_del(struct perf_event *event, int flags);
612extern int  ftrace_profile_set_filter(struct perf_event *event, int event_id,
613				     char *filter_str);
614extern void ftrace_profile_free_filter(struct perf_event *event);
615extern void *perf_trace_buf_prepare(int size, unsigned short type,
616				    struct pt_regs **regs, int *rctxp);
617
618static inline void
619perf_trace_buf_submit(void *raw_data, int size, int rctx, u64 addr,
620		       u64 count, struct pt_regs *regs, void *head,
621		       struct task_struct *task)
622{
623	perf_tp_event(addr, count, raw_data, size, regs, head, rctx, task);
624}
625#endif
626
627#endif /* _LINUX_FTRACE_EVENT_H */
628