1 // SPDX-License-Identifier: GPL-2.0 2 #ifndef __TRACE_EVENTS_H 3 #define __TRACE_EVENTS_H 4 5 #include <linux/trace_seq.h> 6 #include "trace.h" 7 8 extern enum print_line_t 9 trace_print_bputs_msg_only(struct trace_iterator *iter); 10 extern enum print_line_t 11 trace_print_bprintk_msg_only(struct trace_iterator *iter); 12 extern enum print_line_t 13 trace_print_printk_msg_only(struct trace_iterator *iter); 14 15 extern int 16 seq_print_ip_sym(struct trace_seq *s, unsigned long ip, 17 unsigned long sym_flags); 18 19 static inline int seq_print_ip_sym_offset(struct trace_seq *s, unsigned long ip, 20 unsigned long sym_flags) 21 { 22 return seq_print_ip_sym(s, ip, sym_flags | TRACE_ITER(SYM_OFFSET)); 23 } 24 static inline int seq_print_ip_sym_no_offset(struct trace_seq *s, unsigned long ip, 25 unsigned long sym_flags) 26 { 27 return seq_print_ip_sym(s, ip, sym_flags & ~TRACE_ITER(SYM_OFFSET)); 28 } 29 30 extern void trace_seq_print_sym(struct trace_seq *s, unsigned long address, bool offset); 31 extern int trace_print_context(struct trace_iterator *iter); 32 extern int trace_print_lat_context(struct trace_iterator *iter); 33 extern enum print_line_t print_event_fields(struct trace_iterator *iter, 34 struct trace_event *event); 35 36 extern void trace_event_read_lock(void); 37 extern void trace_event_read_unlock(void); 38 extern struct trace_event *ftrace_find_event(int type); 39 40 extern enum print_line_t trace_nop_print(struct trace_iterator *iter, 41 int flags, struct trace_event *event); 42 extern int 43 trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry); 44 45 /* used by module unregistering */ 46 extern int __unregister_trace_event(struct trace_event *event); 47 extern struct rw_semaphore trace_event_sem; 48 49 #define SEQ_PUT_FIELD(s, x) \ 50 trace_seq_putmem(s, &(x), sizeof(x)) 51 52 #define SEQ_PUT_HEX_FIELD(s, x) \ 53 trace_seq_putmem_hex(s, &(x), sizeof(x)) 54 55 #ifdef CONFIG_FUNCTION_TRACE_ARGS 56 void print_function_args(struct trace_seq *s, unsigned long *args, 57 unsigned long func); 58 #else 59 static inline void print_function_args(struct trace_seq *s, unsigned long *args, 60 unsigned long func) { 61 trace_seq_puts(s, "()"); 62 } 63 #endif 64 #endif 65 66