1 #ifndef _PROBE_EVENT_H 2 #define _PROBE_EVENT_H 3 4 #include <linux/compiler.h> 5 #include <stdbool.h> 6 #include "intlist.h" 7 #include "namespaces.h" 8 9 /* Probe related configurations */ 10 struct probe_conf { 11 bool show_ext_vars; 12 bool show_location_range; 13 bool force_add; 14 bool no_inlines; 15 bool cache; 16 int max_probes; 17 }; 18 extern struct probe_conf probe_conf; 19 extern bool probe_event_dry_run; 20 21 struct symbol; 22 23 /* kprobe-tracer and uprobe-tracer tracing point */ 24 struct probe_trace_point { 25 char *realname; /* function real name (if needed) */ 26 char *symbol; /* Base symbol */ 27 char *module; /* Module name */ 28 unsigned long offset; /* Offset from symbol */ 29 unsigned long address; /* Actual address of the trace point */ 30 bool retprobe; /* Return probe flag */ 31 }; 32 33 /* probe-tracer tracing argument referencing offset */ 34 struct probe_trace_arg_ref { 35 struct probe_trace_arg_ref *next; /* Next reference */ 36 long offset; /* Offset value */ 37 }; 38 39 /* kprobe-tracer and uprobe-tracer tracing argument */ 40 struct probe_trace_arg { 41 char *name; /* Argument name */ 42 char *value; /* Base value */ 43 char *type; /* Type name */ 44 struct probe_trace_arg_ref *ref; /* Referencing offset */ 45 }; 46 47 /* kprobe-tracer and uprobe-tracer tracing event (point + arg) */ 48 struct probe_trace_event { 49 char *event; /* Event name */ 50 char *group; /* Group name */ 51 struct probe_trace_point point; /* Trace point */ 52 int nargs; /* Number of args */ 53 bool uprobes; /* uprobes only */ 54 struct probe_trace_arg *args; /* Arguments */ 55 }; 56 57 /* Perf probe probing point */ 58 struct perf_probe_point { 59 char *file; /* File path */ 60 char *function; /* Function name */ 61 int line; /* Line number */ 62 bool retprobe; /* Return probe flag */ 63 char *lazy_line; /* Lazy matching pattern */ 64 unsigned long offset; /* Offset from function entry */ 65 unsigned long abs_address; /* Absolute address of the point */ 66 }; 67 68 /* Perf probe probing argument field chain */ 69 struct perf_probe_arg_field { 70 struct perf_probe_arg_field *next; /* Next field */ 71 char *name; /* Name of the field */ 72 long index; /* Array index number */ 73 bool ref; /* Referencing flag */ 74 }; 75 76 /* Perf probe probing argument */ 77 struct perf_probe_arg { 78 char *name; /* Argument name */ 79 char *var; /* Variable name */ 80 char *type; /* Type name */ 81 struct perf_probe_arg_field *field; /* Structure fields */ 82 }; 83 84 /* Perf probe probing event (point + arg) */ 85 struct perf_probe_event { 86 char *event; /* Event name */ 87 char *group; /* Group name */ 88 struct perf_probe_point point; /* Probe point */ 89 int nargs; /* Number of arguments */ 90 bool sdt; /* SDT/cached event flag */ 91 bool uprobes; /* Uprobe event flag */ 92 char *target; /* Target binary */ 93 struct perf_probe_arg *args; /* Arguments */ 94 struct probe_trace_event *tevs; 95 int ntevs; 96 struct nsinfo *nsi; /* Target namespace */ 97 }; 98 99 /* Line range */ 100 struct line_range { 101 char *file; /* File name */ 102 char *function; /* Function name */ 103 int start; /* Start line number */ 104 int end; /* End line number */ 105 int offset; /* Start line offset */ 106 char *path; /* Real path name */ 107 char *comp_dir; /* Compile directory */ 108 struct intlist *line_list; /* Visible lines */ 109 }; 110 111 struct strlist; 112 113 /* List of variables */ 114 struct variable_list { 115 struct probe_trace_point point; /* Actual probepoint */ 116 struct strlist *vars; /* Available variables */ 117 }; 118 119 struct map; 120 int init_probe_symbol_maps(bool user_only); 121 void exit_probe_symbol_maps(void); 122 123 /* Command string to events */ 124 int parse_perf_probe_command(const char *cmd, struct perf_probe_event *pev); 125 int parse_probe_trace_command(const char *cmd, struct probe_trace_event *tev); 126 127 /* Events to command string */ 128 char *synthesize_perf_probe_command(struct perf_probe_event *pev); 129 char *synthesize_probe_trace_command(struct probe_trace_event *tev); 130 char *synthesize_perf_probe_arg(struct perf_probe_arg *pa); 131 char *synthesize_perf_probe_point(struct perf_probe_point *pp); 132 133 int perf_probe_event__copy(struct perf_probe_event *dst, 134 struct perf_probe_event *src); 135 136 bool perf_probe_with_var(struct perf_probe_event *pev); 137 138 /* Check the perf_probe_event needs debuginfo */ 139 bool perf_probe_event_need_dwarf(struct perf_probe_event *pev); 140 141 /* Release event contents */ 142 void clear_perf_probe_event(struct perf_probe_event *pev); 143 void clear_probe_trace_event(struct probe_trace_event *tev); 144 145 /* Command string to line-range */ 146 int parse_line_range_desc(const char *cmd, struct line_range *lr); 147 148 /* Release line range members */ 149 void line_range__clear(struct line_range *lr); 150 151 /* Initialize line range */ 152 int line_range__init(struct line_range *lr); 153 154 int add_perf_probe_events(struct perf_probe_event *pevs, int npevs); 155 int convert_perf_probe_events(struct perf_probe_event *pevs, int npevs); 156 int apply_perf_probe_events(struct perf_probe_event *pevs, int npevs); 157 int show_probe_trace_events(struct perf_probe_event *pevs, int npevs); 158 void cleanup_perf_probe_events(struct perf_probe_event *pevs, int npevs); 159 160 struct strfilter; 161 162 int del_perf_probe_events(struct strfilter *filter); 163 164 int show_perf_probe_event(const char *group, const char *event, 165 struct perf_probe_event *pev, 166 const char *module, bool use_stdout); 167 int show_perf_probe_events(struct strfilter *filter); 168 int show_line_range(struct line_range *lr, const char *module, 169 struct nsinfo *nsi, bool user); 170 int show_available_vars(struct perf_probe_event *pevs, int npevs, 171 struct strfilter *filter); 172 int show_available_funcs(const char *module, struct nsinfo *nsi, 173 struct strfilter *filter, bool user); 174 void arch__fix_tev_from_maps(struct perf_probe_event *pev, 175 struct probe_trace_event *tev, struct map *map, 176 struct symbol *sym); 177 178 /* If there is no space to write, returns -E2BIG. */ 179 int e_snprintf(char *str, size_t size, const char *format, ...) __printf(3, 4); 180 181 /* Maximum index number of event-name postfix */ 182 #define MAX_EVENT_INDEX 1024 183 184 int copy_to_probe_trace_arg(struct probe_trace_arg *tvar, 185 struct perf_probe_arg *pvar); 186 187 struct map *get_target_map(const char *target, struct nsinfo *nsi, bool user); 188 189 void arch__post_process_probe_trace_events(struct perf_probe_event *pev, 190 int ntevs); 191 192 #endif /*_PROBE_EVENT_H */ 193