201 lines
6.3 KiB
C
201 lines
6.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _PROBE_EVENT_H
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#define _PROBE_EVENT_H
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#include <linux/compiler.h>
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#include <stdbool.h>
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struct intlist;
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struct nsinfo;
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/* Probe related configurations */
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struct probe_conf {
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bool show_ext_vars;
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bool show_location_range;
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bool force_add;
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bool no_inlines;
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bool cache;
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int max_probes;
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unsigned long magic_num;
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};
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extern struct probe_conf probe_conf;
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extern bool probe_event_dry_run;
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#define DEFAULT_PROBE_MAGIC_NUM 0xdeade12d /* u32: 3735937325 */
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struct symbol;
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/* kprobe-tracer and uprobe-tracer tracing point */
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struct probe_trace_point {
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char *realname; /* function real name (if needed) */
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char *symbol; /* Base symbol */
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char *module; /* Module name */
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unsigned long offset; /* Offset from symbol */
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unsigned long ref_ctr_offset; /* SDT reference counter offset */
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unsigned long address; /* Actual address of the trace point */
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bool retprobe; /* Return probe flag */
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};
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/* probe-tracer tracing argument referencing offset */
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struct probe_trace_arg_ref {
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struct probe_trace_arg_ref *next; /* Next reference */
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long offset; /* Offset value */
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bool user_access; /* User-memory access */
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};
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/* kprobe-tracer and uprobe-tracer tracing argument */
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struct probe_trace_arg {
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char *name; /* Argument name */
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char *value; /* Base value */
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char *type; /* Type name */
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struct probe_trace_arg_ref *ref; /* Referencing offset */
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};
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/* kprobe-tracer and uprobe-tracer tracing event (point + arg) */
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struct probe_trace_event {
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char *event; /* Event name */
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char *group; /* Group name */
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struct probe_trace_point point; /* Trace point */
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int nargs; /* Number of args */
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bool uprobes; /* uprobes only */
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struct probe_trace_arg *args; /* Arguments */
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};
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/* Perf probe probing point */
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struct perf_probe_point {
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char *file; /* File path */
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char *function; /* Function name */
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int line; /* Line number */
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bool retprobe; /* Return probe flag */
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char *lazy_line; /* Lazy matching pattern */
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unsigned long offset; /* Offset from function entry */
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unsigned long abs_address; /* Absolute address of the point */
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};
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/* Perf probe probing argument field chain */
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struct perf_probe_arg_field {
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struct perf_probe_arg_field *next; /* Next field */
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char *name; /* Name of the field */
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long index; /* Array index number */
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bool ref; /* Referencing flag */
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};
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/* Perf probe probing argument */
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struct perf_probe_arg {
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char *name; /* Argument name */
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char *var; /* Variable name */
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char *type; /* Type name */
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struct perf_probe_arg_field *field; /* Structure fields */
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bool user_access; /* User-memory access */
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};
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/* Perf probe probing event (point + arg) */
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struct perf_probe_event {
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char *event; /* Event name */
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char *group; /* Group name */
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struct perf_probe_point point; /* Probe point */
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int nargs; /* Number of arguments */
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bool sdt; /* SDT/cached event flag */
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bool uprobes; /* Uprobe event flag */
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char *target; /* Target binary */
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struct perf_probe_arg *args; /* Arguments */
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struct probe_trace_event *tevs;
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int ntevs;
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struct nsinfo *nsi; /* Target namespace */
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};
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/* Line range */
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struct line_range {
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char *file; /* File name */
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char *function; /* Function name */
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int start; /* Start line number */
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int end; /* End line number */
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int offset; /* Start line offset */
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char *path; /* Real path name */
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char *comp_dir; /* Compile directory */
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struct intlist *line_list; /* Visible lines */
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};
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struct strlist;
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/* List of variables */
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struct variable_list {
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struct probe_trace_point point; /* Actual probepoint */
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struct strlist *vars; /* Available variables */
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};
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struct map;
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int init_probe_symbol_maps(bool user_only);
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void exit_probe_symbol_maps(void);
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/* Command string to events */
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int parse_perf_probe_command(const char *cmd, struct perf_probe_event *pev);
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int parse_probe_trace_command(const char *cmd, struct probe_trace_event *tev);
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/* Events to command string */
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char *synthesize_perf_probe_command(struct perf_probe_event *pev);
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char *synthesize_probe_trace_command(struct probe_trace_event *tev);
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char *synthesize_perf_probe_arg(struct perf_probe_arg *pa);
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char *synthesize_perf_probe_point(struct perf_probe_point *pp);
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int perf_probe_event__copy(struct perf_probe_event *dst,
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struct perf_probe_event *src);
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bool perf_probe_with_var(struct perf_probe_event *pev);
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/* Check the perf_probe_event needs debuginfo */
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bool perf_probe_event_need_dwarf(struct perf_probe_event *pev);
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/* Release event contents */
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void clear_perf_probe_event(struct perf_probe_event *pev);
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void clear_probe_trace_event(struct probe_trace_event *tev);
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/* Command string to line-range */
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int parse_line_range_desc(const char *cmd, struct line_range *lr);
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/* Release line range members */
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void line_range__clear(struct line_range *lr);
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/* Initialize line range */
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int line_range__init(struct line_range *lr);
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int add_perf_probe_events(struct perf_probe_event *pevs, int npevs);
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int convert_perf_probe_events(struct perf_probe_event *pevs, int npevs);
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int apply_perf_probe_events(struct perf_probe_event *pevs, int npevs);
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int show_probe_trace_events(struct perf_probe_event *pevs, int npevs);
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void cleanup_perf_probe_events(struct perf_probe_event *pevs, int npevs);
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struct strfilter;
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int del_perf_probe_events(struct strfilter *filter);
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int show_perf_probe_event(const char *group, const char *event,
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struct perf_probe_event *pev,
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const char *module, bool use_stdout);
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int show_perf_probe_events(struct strfilter *filter);
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int show_line_range(struct line_range *lr, const char *module,
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struct nsinfo *nsi, bool user);
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int show_available_vars(struct perf_probe_event *pevs, int npevs,
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struct strfilter *filter);
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int show_available_funcs(const char *module, struct nsinfo *nsi,
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struct strfilter *filter, bool user);
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void arch__fix_tev_from_maps(struct perf_probe_event *pev,
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struct probe_trace_event *tev, struct map *map,
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struct symbol *sym);
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/* If there is no space to write, returns -E2BIG. */
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int e_snprintf(char *str, size_t size, const char *format, ...) __printf(3, 4);
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/* Maximum index number of event-name postfix */
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#define MAX_EVENT_INDEX 1024
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int copy_to_probe_trace_arg(struct probe_trace_arg *tvar,
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struct perf_probe_arg *pvar);
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struct map *get_target_map(const char *target, struct nsinfo *nsi, bool user);
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void arch__post_process_probe_trace_events(struct perf_probe_event *pev,
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int ntevs);
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#endif /*_PROBE_EVENT_H */
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