[deliverable/linux.git] / kernel / trace / trace.h

#ifndef _LINUX_KERNEL_TRACE_H
#define _LINUX_KERNEL_TRACE_H

#include <linux/fs.h>
#include <asm/atomic.h>
#include <linux/sched.h>
#include <linux/clocksource.h>
#include <linux/mmiotrace.h>
#include <linux/ftrace.h>

enum trace_type {
	__TRACE_FIRST_TYPE = 0,

	TRACE_FN,
	TRACE_CTX,
	TRACE_WAKE,
	TRACE_CONT,
	TRACE_STACK,
	TRACE_PRINT,
	TRACE_SPECIAL,
	TRACE_MMIO_RW,
	TRACE_MMIO_MAP,
	TRACE_BOOT,

	__TRACE_LAST_TYPE
};

/*
 * Function trace entry - function address and parent function addres:
 */
struct ftrace_entry {
	unsigned long		ip;
	unsigned long		parent_ip;
};
extern struct tracer boot_tracer;

/*
 * Context switch trace entry - which task (and prio) we switched from/to:
 */
struct ctx_switch_entry {
	unsigned int		prev_pid;
	unsigned char		prev_prio;
	unsigned char		prev_state;
	unsigned int		next_pid;
	unsigned char		next_prio;
	unsigned char		next_state;
	unsigned int		next_cpu;
};

/*
 * Special (free-form) trace entry:
 */
struct special_entry {
	unsigned long		arg1;
	unsigned long		arg2;
	unsigned long		arg3;
};

/*
 * Stack-trace entry:
 */

#define FTRACE_STACK_ENTRIES	8

struct stack_entry {
	unsigned long		caller[FTRACE_STACK_ENTRIES];
};

/*
 * ftrace_printk entry:
 */
struct print_entry {
	unsigned long		ip;
	char			buf[];
};

/*
 * trace_flag_type is an enumeration that holds different
 * states when a trace occurs. These are:
 *  IRQS_OFF	- interrupts were disabled
 *  NEED_RESCED - reschedule is requested
 *  HARDIRQ	- inside an interrupt handler
 *  SOFTIRQ	- inside a softirq handler
 *  CONT	- multiple entries hold the trace item
 */
enum trace_flag_type {
	TRACE_FLAG_IRQS_OFF		= 0x01,
	TRACE_FLAG_NEED_RESCHED		= 0x02,
	TRACE_FLAG_HARDIRQ		= 0x04,
	TRACE_FLAG_SOFTIRQ		= 0x08,
	TRACE_FLAG_CONT			= 0x10,
};

/*
 * The trace field - the most basic unit of tracing. This is what
 * is printed in the end as a single line in the trace output, such as:
 *
 *     bash-15816 [01]   235.197585: idle_cpu <- irq_enter
 */
struct trace_field {
	char			cpu;
	char			flags;
	char			preempt_count;
	int			pid;
	cycle_t			t;
	union {
		struct ftrace_entry		fn;
		struct ctx_switch_entry		ctx;
		struct special_entry		special;
		struct stack_entry		stack;
		struct print_entry		print;
		struct mmiotrace_rw		mmiorw;
		struct mmiotrace_map		mmiomap;
		struct boot_trace		initcall;
	};
};

struct trace_field_cont {
	char				buf[sizeof(struct trace_field)];
};

struct trace_entry {
	char 				type;
	union {
		struct trace_field	field;
		struct trace_field_cont	cont;
	};
};

#define TRACE_ENTRY_SIZE	sizeof(struct trace_entry)
#define TRACE_BUF_SIZE		1024
#define TRACE_PRINT_BUF_SIZE \
	(sizeof(struct trace_field) - offsetof(struct trace_field, print.buf))
#define TRACE_CONT_BUF_SIZE	sizeof(struct trace_field)

/*
 * The CPU trace array - it consists of thousands of trace entries
 * plus some other descriptor data: (for example which task started
 * the trace, etc.)
 */
struct trace_array_cpu {
	struct list_head	trace_pages;
	atomic_t		disabled;
	raw_spinlock_t		lock;
	struct lock_class_key	lock_key;

	/* these fields get copied into max-trace: */
	unsigned		trace_head_idx;
	unsigned		trace_tail_idx;
	void			*trace_head; /* producer */
	void			*trace_tail; /* consumer */
	unsigned long		trace_idx;
	unsigned long		overrun;
	unsigned long		saved_latency;
	unsigned long		critical_start;
	unsigned long		critical_end;
	unsigned long		critical_sequence;
	unsigned long		nice;
	unsigned long		policy;
	unsigned long		rt_priority;
	cycle_t			preempt_timestamp;
	pid_t			pid;
	uid_t			uid;
	char			comm[TASK_COMM_LEN];
};

struct trace_iterator;

/*
 * The trace array - an array of per-CPU trace arrays. This is the
 * highest level data structure that individual tracers deal with.
 * They have on/off state as well:
 */
struct trace_array {
	unsigned long		entries;
	long			ctrl;
	int			cpu;
	cycle_t			time_start;
	struct task_struct	*waiter;
	struct trace_array_cpu	*data[NR_CPUS];
};

/*
 * A specific tracer, represented by methods that operate on a trace array:
 */
struct tracer {
	const char		*name;
	void			(*init)(struct trace_array *tr);
	void			(*reset)(struct trace_array *tr);
	void			(*open)(struct trace_iterator *iter);
	void			(*pipe_open)(struct trace_iterator *iter);
	void			(*close)(struct trace_iterator *iter);
	void			(*start)(struct trace_iterator *iter);
	void			(*stop)(struct trace_iterator *iter);
	ssize_t			(*read)(struct trace_iterator *iter,
					struct file *filp, char __user *ubuf,
					size_t cnt, loff_t *ppos);
	void			(*ctrl_update)(struct trace_array *tr);
#ifdef CONFIG_FTRACE_STARTUP_TEST
	int			(*selftest)(struct tracer *trace,
					    struct trace_array *tr);
#endif
	int			(*print_line)(struct trace_iterator *iter);
	struct tracer		*next;
	int			print_max;
};

struct trace_seq {
	unsigned char		buffer[PAGE_SIZE];
	unsigned int		len;
	unsigned int		readpos;
};

/*
 * Trace iterator - used by printout routines who present trace
 * results to users and which routines might sleep, etc:
 */
struct trace_iterator {
	struct trace_array	*tr;
	struct tracer		*trace;
	void			*private;
	long			last_overrun[NR_CPUS];
	long			overrun[NR_CPUS];

	/* The below is zeroed out in pipe_read */
	struct trace_seq	seq;
	struct trace_entry	*ent;
	int			cpu;

	struct trace_entry	*prev_ent;
	int			prev_cpu;

	unsigned long		iter_flags;
	loff_t			pos;
	unsigned long		next_idx[NR_CPUS];
	struct list_head	*next_page[NR_CPUS];
	unsigned		next_page_idx[NR_CPUS];
	long			idx;
};

void trace_wake_up(void);
void tracing_reset(struct trace_array_cpu *data);
int tracing_open_generic(struct inode *inode, struct file *filp);
struct dentry *tracing_init_dentry(void);
void init_tracer_sysprof_debugfs(struct dentry *d_tracer);

struct trace_entry *tracing_get_trace_entry(struct trace_array *tr,
						struct trace_array_cpu *data);
void tracing_generic_entry_update(struct trace_entry *entry,
						unsigned long flags);

void ftrace(struct trace_array *tr,
			    struct trace_array_cpu *data,
			    unsigned long ip,
			    unsigned long parent_ip,
			    unsigned long flags);
void tracing_sched_switch_trace(struct trace_array *tr,
				struct trace_array_cpu *data,
				struct task_struct *prev,
				struct task_struct *next,
				unsigned long flags);
void tracing_record_cmdline(struct task_struct *tsk);

void tracing_sched_wakeup_trace(struct trace_array *tr,
				struct trace_array_cpu *data,
				struct task_struct *wakee,
				struct task_struct *cur,
				unsigned long flags);
void trace_special(struct trace_array *tr,
		   struct trace_array_cpu *data,
		   unsigned long arg1,
		   unsigned long arg2,
		   unsigned long arg3);
void trace_function(struct trace_array *tr,
		    struct trace_array_cpu *data,
		    unsigned long ip,
		    unsigned long parent_ip,
		    unsigned long flags);

void tracing_start_cmdline_record(void);
void tracing_stop_cmdline_record(void);
int register_tracer(struct tracer *type);
void unregister_tracer(struct tracer *type);

extern unsigned long nsecs_to_usecs(unsigned long nsecs);

extern unsigned long tracing_max_latency;
extern unsigned long tracing_thresh;

void update_max_tr(struct trace_array *tr, struct task_struct *tsk, int cpu);
void update_max_tr_single(struct trace_array *tr,
			  struct task_struct *tsk, int cpu);

extern cycle_t ftrace_now(int cpu);

#ifdef CONFIG_FTRACE
void tracing_start_function_trace(void);
void tracing_stop_function_trace(void);
#else
# define tracing_start_function_trace()		do { } while (0)
# define tracing_stop_function_trace()		do { } while (0)
#endif

#ifdef CONFIG_CONTEXT_SWITCH_TRACER
typedef void
(*tracer_switch_func_t)(void *private,
			void *__rq,
			struct task_struct *prev,
			struct task_struct *next);

struct tracer_switch_ops {
	tracer_switch_func_t		func;
	void				*private;
	struct tracer_switch_ops	*next;
};

#endif /* CONFIG_CONTEXT_SWITCH_TRACER */

#ifdef CONFIG_DYNAMIC_FTRACE
extern unsigned long ftrace_update_tot_cnt;
#define DYN_FTRACE_TEST_NAME trace_selftest_dynamic_test_func
extern int DYN_FTRACE_TEST_NAME(void);
#endif

#ifdef CONFIG_FTRACE_STARTUP_TEST
extern int trace_selftest_startup_function(struct tracer *trace,
					   struct trace_array *tr);
extern int trace_selftest_startup_irqsoff(struct tracer *trace,
					  struct trace_array *tr);
extern int trace_selftest_startup_preemptoff(struct tracer *trace,
					     struct trace_array *tr);
extern int trace_selftest_startup_preemptirqsoff(struct tracer *trace,
						 struct trace_array *tr);
extern int trace_selftest_startup_wakeup(struct tracer *trace,
					 struct trace_array *tr);
extern int trace_selftest_startup_nop(struct tracer *trace,
					 struct trace_array *tr);
extern int trace_selftest_startup_sched_switch(struct tracer *trace,
					       struct trace_array *tr);
extern int trace_selftest_startup_sysprof(struct tracer *trace,
					       struct trace_array *tr);
#endif /* CONFIG_FTRACE_STARTUP_TEST */

extern void *head_page(struct trace_array_cpu *data);
extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...);
extern void trace_seq_print_cont(struct trace_seq *s,
				 struct trace_iterator *iter);
extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
				 size_t cnt);
extern long ns2usecs(cycle_t nsec);
extern int trace_vprintk(unsigned long ip, const char *fmt, va_list args);

extern unsigned long trace_flags;

/*
 * trace_iterator_flags is an enumeration that defines bit
 * positions into trace_flags that controls the output.
 *
 * NOTE: These bits must match the trace_options array in
 *       trace.c.
 */
enum trace_iterator_flags {
	TRACE_ITER_PRINT_PARENT		= 0x01,
	TRACE_ITER_SYM_OFFSET		= 0x02,
	TRACE_ITER_SYM_ADDR		= 0x04,
	TRACE_ITER_VERBOSE		= 0x08,
	TRACE_ITER_RAW			= 0x10,
	TRACE_ITER_HEX			= 0x20,
	TRACE_ITER_BIN			= 0x40,
	TRACE_ITER_BLOCK		= 0x80,
	TRACE_ITER_STACKTRACE		= 0x100,
	TRACE_ITER_SCHED_TREE		= 0x200,
	TRACE_ITER_PRINTK		= 0x400,
};

extern struct tracer nop_trace;

#endif /* _LINUX_KERNEL_TRACE_H */
Commit	Line	Data
bc0c38d1 SR	1	#ifndef _LINUX_KERNEL_TRACE_H
	2	#define _LINUX_KERNEL_TRACE_H
	3
	4	#include <linux/fs.h>
	5	#include <asm/atomic.h>
	6	#include <linux/sched.h>
	7	#include <linux/clocksource.h>
bd8ac686	8	#include <linux/mmiotrace.h>
d13744cd	9	#include <linux/ftrace.h>
bc0c38d1	10
72829bc3 TG	11	enum trace_type {
	12	__TRACE_FIRST_TYPE = 0,
	13
	14	TRACE_FN,
	15	TRACE_CTX,
	16	TRACE_WAKE,
dd0e545f	17	TRACE_CONT,
72829bc3	18	TRACE_STACK,
dd0e545f	19	TRACE_PRINT,
72829bc3	20	TRACE_SPECIAL,
bd8ac686 PP	21	TRACE_MMIO_RW,
bd8ac686 PP	22	TRACE_MMIO_MAP,
d13744cd	23	TRACE_BOOT,
72829bc3 TG	24
	25	__TRACE_LAST_TYPE
	26	};
	27
bc0c38d1 SR	28	/*
	29	* Function trace entry - function address and parent function addres:
	30	*/
	31	struct ftrace_entry {
	32	unsigned long ip;
	33	unsigned long parent_ip;
	34	};
d13744cd	35	extern struct tracer boot_tracer;
bc0c38d1 SR	36
	37	/*
	38	* Context switch trace entry - which task (and prio) we switched from/to:
	39	*/
	40	struct ctx_switch_entry {
	41	unsigned int prev_pid;
	42	unsigned char prev_prio;
	43	unsigned char prev_state;
	44	unsigned int next_pid;
	45	unsigned char next_prio;
bac524d3	46	unsigned char next_state;
80b5e940	47	unsigned int next_cpu;
bc0c38d1 SR	48	};
bc0c38d1 SR	49
f0a920d5 IM	50	/*
	51	* Special (free-form) trace entry:
	52	*/
	53	struct special_entry {
	54	unsigned long arg1;
	55	unsigned long arg2;
	56	unsigned long arg3;
	57	};
	58
86387f7e IM	59	/*
	60	* Stack-trace entry:
	61	*/
	62
74f4e369	63	#define FTRACE_STACK_ENTRIES 8
86387f7e IM	64
	65	struct stack_entry {
	66	unsigned long caller[FTRACE_STACK_ENTRIES];
	67	};
	68
dd0e545f SR	69	/*
	70	* ftrace_printk entry:
	71	*/
	72	struct print_entry {
	73	unsigned long ip;
	74	char buf[];
	75	};
	76
fc5e27ae PP	77	/*
	78	* trace_flag_type is an enumeration that holds different
	79	* states when a trace occurs. These are:
	80	* IRQS_OFF - interrupts were disabled
	81	* NEED_RESCED - reschedule is requested
	82	* HARDIRQ - inside an interrupt handler
	83	* SOFTIRQ - inside a softirq handler
	84	* CONT - multiple entries hold the trace item
	85	*/
	86	enum trace_flag_type {
	87	TRACE_FLAG_IRQS_OFF = 0x01,
	88	TRACE_FLAG_NEED_RESCHED = 0x02,
	89	TRACE_FLAG_HARDIRQ = 0x04,
	90	TRACE_FLAG_SOFTIRQ = 0x08,
	91	TRACE_FLAG_CONT = 0x10,
	92	};
	93
bc0c38d1	94	/*
2e2ca155	95	* The trace field - the most basic unit of tracing. This is what
bc0c38d1 SR	96	* is printed in the end as a single line in the trace output, such as:
	97	*
	98	* bash-15816 [01] 235.197585: idle_cpu <- irq_enter
	99	*/
2e2ca155	100	struct trace_field {
bc0c38d1 SR	101	char cpu;
	102	char flags;
	103	char preempt_count;
	104	int pid;
	105	cycle_t t;
bc0c38d1 SR	106	union {
	107	struct ftrace_entry fn;
	108	struct ctx_switch_entry ctx;
f0a920d5	109	struct special_entry special;
86387f7e	110	struct stack_entry stack;
dd0e545f	111	struct print_entry print;
bd8ac686 PP	112	struct mmiotrace_rw mmiorw;
bd8ac686 PP	113	struct mmiotrace_map mmiomap;
d13744cd	114	struct boot_trace initcall;
bc0c38d1 SR	115	};
	116	};
	117
2e2ca155 SR	118	struct trace_field_cont {
	119	char buf[sizeof(struct trace_field)];
	120	};
	121
	122	struct trace_entry {
	123	char type;
	124	union {
	125	struct trace_field field;
	126	struct trace_field_cont cont;
	127	};
	128	};
	129
bc0c38d1	130	#define TRACE_ENTRY_SIZE sizeof(struct trace_entry)
5bf9a1ee PP	131	#define TRACE_BUF_SIZE 1024
	132	#define TRACE_PRINT_BUF_SIZE \
	133	(sizeof(struct trace_field) - offsetof(struct trace_field, print.buf))
	134	#define TRACE_CONT_BUF_SIZE sizeof(struct trace_field)
bc0c38d1 SR	135
	136	/*
	137	* The CPU trace array - it consists of thousands of trace entries
	138	* plus some other descriptor data: (for example which task started
	139	* the trace, etc.)
	140	*/
	141	struct trace_array_cpu {
4c11d7ae	142	struct list_head trace_pages;
bc0c38d1	143	atomic_t disabled;
92205c23	144	raw_spinlock_t lock;
d4c5a2f5	145	struct lock_class_key lock_key;
4e3c3333	146
c7aafc54	147	/* these fields get copied into max-trace: */
93a588f4 SR	148	unsigned trace_head_idx;
	149	unsigned trace_tail_idx;
	150	void trace_head; / producer */
	151	void trace_tail; / consumer */
c7aafc54	152	unsigned long trace_idx;
53d0aa77	153	unsigned long overrun;
bc0c38d1 SR	154	unsigned long saved_latency;
	155	unsigned long critical_start;
	156	unsigned long critical_end;
	157	unsigned long critical_sequence;
	158	unsigned long nice;
	159	unsigned long policy;
	160	unsigned long rt_priority;
	161	cycle_t preempt_timestamp;
	162	pid_t pid;
	163	uid_t uid;
	164	char comm[TASK_COMM_LEN];
	165	};
	166
	167	struct trace_iterator;
	168
	169	/*
	170	* The trace array - an array of per-CPU trace arrays. This is the
	171	* highest level data structure that individual tracers deal with.
	172	* They have on/off state as well:
	173	*/
	174	struct trace_array {
	175	unsigned long entries;
	176	long ctrl;
	177	int cpu;
	178	cycle_t time_start;
b3806b43	179	struct task_struct *waiter;
bc0c38d1 SR	180	struct trace_array_cpu *data[NR_CPUS];
	181	};
	182
	183	/*
	184	* A specific tracer, represented by methods that operate on a trace array:
	185	*/
	186	struct tracer {
	187	const char *name;
	188	void (init)(struct trace_array tr);
	189	void (reset)(struct trace_array tr);
	190	void (open)(struct trace_iterator iter);
107bad8b	191	void (pipe_open)(struct trace_iterator iter);
bc0c38d1 SR	192	void (close)(struct trace_iterator iter);
	193	void (start)(struct trace_iterator iter);
	194	void (stop)(struct trace_iterator iter);
107bad8b SR	195	ssize_t (read)(struct trace_iterator iter,
	196	struct file filp, char __user ubuf,
	197	size_t cnt, loff_t *ppos);
bc0c38d1	198	void (ctrl_update)(struct trace_array tr);
60a11774 SR	199	#ifdef CONFIG_FTRACE_STARTUP_TEST
	200	int (selftest)(struct tracer trace,
	201	struct trace_array *tr);
	202	#endif
72829bc3	203	int (print_line)(struct trace_iterator iter);
bc0c38d1 SR	204	struct tracer *next;
	205	int print_max;
	206	};
	207
214023c3 SR	208	struct trace_seq {
	209	unsigned char buffer[PAGE_SIZE];
	210	unsigned int len;
6c6c2796	211	unsigned int readpos;
214023c3 SR	212	};
214023c3 SR	213
bc0c38d1 SR	214	/*
	215	* Trace iterator - used by printout routines who present trace
	216	* results to users and which routines might sleep, etc:
	217	*/
	218	struct trace_iterator {
	219	struct trace_array *tr;
	220	struct tracer *trace;
107bad8b	221	void *private;
53d0aa77 SR	222	long last_overrun[NR_CPUS];
53d0aa77 SR	223	long overrun[NR_CPUS];
4e3c3333	224
53d0aa77 SR	225	/* The below is zeroed out in pipe_read */
53d0aa77 SR	226	struct trace_seq seq;
bc0c38d1	227	struct trace_entry *ent;
4e3c3333 IM	228	int cpu;
	229
	230	struct trace_entry *prev_ent;
	231	int prev_cpu;
	232
bc0c38d1 SR	233	unsigned long iter_flags;
	234	loff_t pos;
	235	unsigned long next_idx[NR_CPUS];
4c11d7ae SR	236	struct list_head *next_page[NR_CPUS];
	237	unsigned next_page_idx[NR_CPUS];
	238	long idx;
bc0c38d1 SR	239	};
bc0c38d1 SR	240
45dcd8b8	241	void trace_wake_up(void);
e309b41d	242	void tracing_reset(struct trace_array_cpu *data);
bc0c38d1 SR	243	int tracing_open_generic(struct inode inode, struct file filp);
bc0c38d1 SR	244	struct dentry *tracing_init_dentry(void);
d618b3e6 IM	245	void init_tracer_sysprof_debugfs(struct dentry *d_tracer);
d618b3e6 IM	246
45dcd8b8 PP	247	struct trace_entry tracing_get_trace_entry(struct trace_array tr,
	248	struct trace_array_cpu *data);
	249	void tracing_generic_entry_update(struct trace_entry *entry,
	250	unsigned long flags);
	251
bc0c38d1 SR	252	void ftrace(struct trace_array *tr,
	253	struct trace_array_cpu *data,
	254	unsigned long ip,
	255	unsigned long parent_ip,
	256	unsigned long flags);
	257	void tracing_sched_switch_trace(struct trace_array *tr,
	258	struct trace_array_cpu *data,
	259	struct task_struct *prev,
	260	struct task_struct *next,
	261	unsigned long flags);
	262	void tracing_record_cmdline(struct task_struct *tsk);
57422797 IM	263
	264	void tracing_sched_wakeup_trace(struct trace_array *tr,
	265	struct trace_array_cpu *data,
	266	struct task_struct *wakee,
	267	struct task_struct *cur,
	268	unsigned long flags);
f0a920d5 IM	269	void trace_special(struct trace_array *tr,
	270	struct trace_array_cpu *data,
	271	unsigned long arg1,
	272	unsigned long arg2,
	273	unsigned long arg3);
6fb44b71 SR	274	void trace_function(struct trace_array *tr,
	275	struct trace_array_cpu *data,
	276	unsigned long ip,
	277	unsigned long parent_ip,
	278	unsigned long flags);
bc0c38d1	279
41bc8144 SR	280	void tracing_start_cmdline_record(void);
41bc8144 SR	281	void tracing_stop_cmdline_record(void);
bc0c38d1 SR	282	int register_tracer(struct tracer *type);
	283	void unregister_tracer(struct tracer *type);
	284
	285	extern unsigned long nsecs_to_usecs(unsigned long nsecs);
	286
	287	extern unsigned long tracing_max_latency;
	288	extern unsigned long tracing_thresh;
	289
	290	void update_max_tr(struct trace_array tr, struct task_struct tsk, int cpu);
	291	void update_max_tr_single(struct trace_array *tr,
	292	struct task_struct *tsk, int cpu);
	293
e309b41d	294	extern cycle_t ftrace_now(int cpu);
bc0c38d1	295
001b6767 SR	296	#ifdef CONFIG_FTRACE
	297	void tracing_start_function_trace(void);
	298	void tracing_stop_function_trace(void);
	299	#else
	300	# define tracing_start_function_trace() do { } while (0)
	301	# define tracing_stop_function_trace() do { } while (0)
	302	#endif
	303
bc0c38d1 SR	304	#ifdef CONFIG_CONTEXT_SWITCH_TRACER
	305	typedef void
	306	(tracer_switch_func_t)(void private,
5b82a1b0	307	void *__rq,
bc0c38d1 SR	308	struct task_struct *prev,
	309	struct task_struct *next);
	310
	311	struct tracer_switch_ops {
	312	tracer_switch_func_t func;
	313	void *private;
	314	struct tracer_switch_ops *next;
	315	};
	316
bc0c38d1 SR	317	#endif /* CONFIG_CONTEXT_SWITCH_TRACER */
	318
	319	#ifdef CONFIG_DYNAMIC_FTRACE
	320	extern unsigned long ftrace_update_tot_cnt;
d05cdb25 SR	321	#define DYN_FTRACE_TEST_NAME trace_selftest_dynamic_test_func
d05cdb25 SR	322	extern int DYN_FTRACE_TEST_NAME(void);
bc0c38d1 SR	323	#endif
bc0c38d1 SR	324
60a11774	325	#ifdef CONFIG_FTRACE_STARTUP_TEST
60a11774 SR	326	extern int trace_selftest_startup_function(struct tracer *trace,
60a11774 SR	327	struct trace_array *tr);
60a11774 SR	328	extern int trace_selftest_startup_irqsoff(struct tracer *trace,
60a11774 SR	329	struct trace_array *tr);
60a11774 SR	330	extern int trace_selftest_startup_preemptoff(struct tracer *trace,
60a11774 SR	331	struct trace_array *tr);
60a11774 SR	332	extern int trace_selftest_startup_preemptirqsoff(struct tracer *trace,
60a11774 SR	333	struct trace_array *tr);
60a11774 SR	334	extern int trace_selftest_startup_wakeup(struct tracer *trace,
60a11774 SR	335	struct trace_array *tr);
fb1b6d8b SN	336	extern int trace_selftest_startup_nop(struct tracer *trace,
fb1b6d8b SN	337	struct trace_array *tr);
60a11774 SR	338	extern int trace_selftest_startup_sched_switch(struct tracer *trace,
60a11774 SR	339	struct trace_array *tr);
a6dd24f8 IM	340	extern int trace_selftest_startup_sysprof(struct tracer *trace,
a6dd24f8 IM	341	struct trace_array *tr);
60a11774 SR	342	#endif /* CONFIG_FTRACE_STARTUP_TEST */
60a11774 SR	343
c7aafc54	344	extern void head_page(struct trace_array_cpu data);
72829bc3	345	extern int trace_seq_printf(struct trace_seq s, const char fmt, ...);
fc5e27ae PP	346	extern void trace_seq_print_cont(struct trace_seq *s,
fc5e27ae PP	347	struct trace_iterator *iter);
6c6c2796 PP	348	extern ssize_t trace_seq_to_user(struct trace_seq s, char __user ubuf,
6c6c2796 PP	349	size_t cnt);
72829bc3	350	extern long ns2usecs(cycle_t nsec);
801fe400	351	extern int trace_vprintk(unsigned long ip, const char *fmt, va_list args);
c7aafc54	352
4e655519 IM	353	extern unsigned long trace_flags;
4e655519 IM	354
4fcdae83 SR	355	/*
	356	* trace_iterator_flags is an enumeration that defines bit
	357	* positions into trace_flags that controls the output.
	358	*
	359	* NOTE: These bits must match the trace_options array in
	360	* trace.c.
	361	*/
4e655519 IM	362	enum trace_iterator_flags {
	363	TRACE_ITER_PRINT_PARENT = 0x01,
	364	TRACE_ITER_SYM_OFFSET = 0x02,
	365	TRACE_ITER_SYM_ADDR = 0x04,
	366	TRACE_ITER_VERBOSE = 0x08,
	367	TRACE_ITER_RAW = 0x10,
	368	TRACE_ITER_HEX = 0x20,
	369	TRACE_ITER_BIN = 0x40,
	370	TRACE_ITER_BLOCK = 0x80,
	371	TRACE_ITER_STACKTRACE = 0x100,
4ac3ba41	372	TRACE_ITER_SCHED_TREE = 0x200,
f09ce573	373	TRACE_ITER_PRINTK = 0x400,
4e655519 IM	374	};
4e655519 IM	375
43a15386 FW	376	extern struct tracer nop_trace;
43a15386 FW	377
bc0c38d1	378	#endif /* _LINUX_KERNEL_TRACE_H */