/* * This file defines the trace event structures that go into the ring * buffer directly. They are created via macros so that changes for them * appear in the format file. Using macros will automate this process. * * The macro used to create a ftrace data structure is: * * FTRACE_ENTRY( name, struct_name, id, structure, print ) * * @name: the name used the event name, as well as the name of *   the directory that holds the format file. * * @struct_name: the name of the structure that is created. * * @id: The event identifier that is used to detect what event *    this is from the ring buffer. * * @structure: the structure layout * *  - __field(	type,	item	) *	  This is equivalent to declaring *		type	item; *	  in the structure. *  - __array(	type,	item,	size	) *	  This is equivalent to declaring *		type	item[size]; *	  in the structure. * *   * for structures within structures, the format of the internal *	structure is laid out. This allows the internal structure *	to be deciphered for the format file. Although these macros *	may become out of sync with the internal structure, they *	will create a compile error if it happens. Since the *	internel structures are just tracing helpers, this is not *	an issue. * *	When an internal structure is used, it should use: * *	__field_struct(	type,	item	) * *	instead of __field. This will prevent it from being shown in *	the output file. The fields in the structure should use. * *	__field_desc(	type,	container,	item		) *	__array_desc(	type,	container,	item,	len	) * *	type, item and len are the same as __field and __array, but *	container is added. This is the name of the item in *	__field_struct that this is describing. * * * @print: the print format shown to users in the format file. */ /* * Function trace entry - function address and parent function address: */FTRACE_ENTRY_REG(function, ftrace_entry, 	TRACE_FN, 	F_STRUCT(		__field(	unsigned long,	ip		)		__field(	unsigned long,	parent_ip	)	), 	F_printk(" %lx <-- %lx", __entry->ip, __entry->parent_ip), 	FILTER_TRACE_FN, 	perf_ftrace_event_register); /* Function call entry */FTRACE_ENTRY(funcgraph_entry, ftrace_graph_ent_entry, 	TRACE_GRAPH_ENT, 	F_STRUCT(		__field_struct(	struct ftrace_graph_ent,	graph_ent	)		__field_desc(	unsigned long,	graph_ent,	func		)		__field_desc(	int,		graph_ent,	depth		)	), 	F_printk("--> %lx (%d)", __entry->func, __entry->depth), 	FILTER_OTHER); /* Function return entry */FTRACE_ENTRY(funcgraph_exit, ftrace_graph_ret_entry, 	TRACE_GRAPH_RET, 	F_STRUCT(		__field_struct(	struct ftrace_graph_ret,	ret	)		__field_desc(	unsigned long,	ret,		func	)		__field_desc(	unsigned long long, ret,	calltime)		__field_desc(	unsigned long long, ret,	rettime	)		__field_desc(	unsigned long,	ret,		overrun	)		__field_desc(	int,		ret,		depth	)	), 	F_printk("<-- %lx (%d) (start: %llx  end: %llx) over: %d",		 __entry->func, __entry->depth,		 __entry->calltime, __entry->rettime,		 __entry->depth), 	FILTER_OTHER); /* * Context switch trace entry - which task (and prio) we switched from/to: * * This is used for both wakeup and context switches. We only want * to create one structure, but we need two outputs for it. */#define FTRACE_CTX_FIELDS					\	__field(	unsigned int,	prev_pid	)	\	__field(	unsigned int,	next_pid	)	\	__field(	unsigned int,	next_cpu	)       \	__field(	unsigned char,	prev_prio	)	\	__field(	unsigned char,	prev_state	)	\	__field(	unsigned char,	next_prio	)	\	__field(	unsigned char,	next_state	) FTRACE_ENTRY(context_switch, ctx_switch_entry, 	TRACE_CTX, 	F_STRUCT(		FTRACE_CTX_FIELDS	), 	F_printk("%u:%u:%u  ==> %u:%u:%u [%03u]",		 __entry->prev_pid, __entry->prev_prio, __entry->prev_state,		 __entry->next_pid, __entry->next_prio, __entry->next_state,		 __entry->next_cpu), 	FILTER_OTHER); /* * FTRACE_ENTRY_DUP only creates the format file, it will not *  create another structure. */FTRACE_ENTRY_DUP(wakeup, ctx_switch_entry, 	TRACE_WAKE, 	F_STRUCT(		FTRACE_CTX_FIELDS	), 	F_printk("%u:%u:%u  ==+ %u:%u:%u [%03u]",		 __entry->prev_pid, __entry->prev_prio, __entry->prev_state,		 __entry->next_pid, __entry->next_prio, __entry->next_state,		 __entry->next_cpu), 	FILTER_OTHER); /* * Stack-trace entry: */ #define FTRACE_STACK_ENTRIES	8 #ifndef CONFIG_64BIT# define IP_FMT "%08lx"#else# define IP_FMT "%016lx"#endif FTRACE_ENTRY(kernel_stack, stack_entry, 	TRACE_STACK, 	F_STRUCT(		__field(	int,		size	)		__dynamic_array(unsigned long,	caller	)	), 	F_printk("\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n"		 "\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n"		 "\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n",		 __entry->caller[0], __entry->caller[1], __entry->caller[2],		 __entry->caller[3], __entry->caller[4], __entry->caller[5],		 __entry->caller[6], __entry->caller[7]), 	FILTER_OTHER); FTRACE_ENTRY(user_stack, userstack_entry, 	TRACE_USER_STACK, 	F_STRUCT(		__field(	unsigned int,	tgid	)		__array(	unsigned long,	caller, FTRACE_STACK_ENTRIES	)	), 	F_printk("\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n"		 "\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n"		 "\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n",		 __entry->caller[0], __entry->caller[1], __entry->caller[2],		 __entry->caller[3], __entry->caller[4], __entry->caller[5],		 __entry->caller[6], __entry->caller[7]), 	FILTER_OTHER); /* * trace_printk entry: */FTRACE_ENTRY(bprint, bprint_entry, 	TRACE_BPRINT, 	F_STRUCT(		__field(	unsigned long,	ip	)		__field(	const char *,	fmt	)		__dynamic_array(	u32,	buf	)	), 	F_printk("%pf: %s",		 (void *)__entry->ip, __entry->fmt), 	FILTER_OTHER); FTRACE_ENTRY(print, print_entry, 	TRACE_PRINT, 	F_STRUCT(		__field(	unsigned long,	ip	)		__dynamic_array(	char,	buf	)	), 	F_printk("%pf: %s",		 (void *)__entry->ip, __entry->buf), 	FILTER_OTHER); FTRACE_ENTRY(bputs, bputs_entry, 	TRACE_BPUTS, 	F_STRUCT(		__field(	unsigned long,	ip	)		__field(	const char *,	str	)	), 	F_printk("%pf: %s",		 (void *)__entry->ip, __entry->str), 	FILTER_OTHER); FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw, 	TRACE_MMIO_RW, 	F_STRUCT(		__field_struct(	struct mmiotrace_rw,	rw	)		__field_desc(	resource_size_t, rw,	phys	)		__field_desc(	unsigned long,	rw,	value	)		__field_desc(	unsigned long,	rw,	pc	)		__field_desc(	int, 		rw,	map_id	)		__field_desc(	unsigned char,	rw,	opcode	)		__field_desc(	unsigned char,	rw,	width	)	), 	F_printk("%lx %lx %lx %d %x %x",		 (unsigned long)__entry->phys, __entry->value, __entry->pc,		 __entry->map_id, __entry->opcode, __entry->width), 	FILTER_OTHER); FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map, 	TRACE_MMIO_MAP, 	F_STRUCT(		__field_struct(	struct mmiotrace_map,	map	)		__field_desc(	resource_size_t, map,	phys	)		__field_desc(	unsigned long,	map,	virt	)		__field_desc(	unsigned long,	map,	len	)		__field_desc(	int, 		map,	map_id	)		__field_desc(	unsigned char,	map,	opcode	)	), 	F_printk("%lx %lx %lx %d %x",		 (unsigned long)__entry->phys, __entry->virt, __entry->len,		 __entry->map_id, __entry->opcode), 	FILTER_OTHER);  #define TRACE_FUNC_SIZE 30#define TRACE_FILE_SIZE 20 FTRACE_ENTRY(branch, trace_branch, 	TRACE_BRANCH, 	F_STRUCT(		__field(	unsigned int,	line				)		__array(	char,		func,	TRACE_FUNC_SIZE+1	)		__array(	char,		file,	TRACE_FILE_SIZE+1	)		__field(	char,		correct				)	), 	F_printk("%u:%s:%s (%u)",		 __entry->line,		 __entry->func, __entry->file, __entry->correct), 	FILTER_OTHER);