linux/tools/perf/util/probe-event.h
Masami Hiramatsu e80711ca85 perf probe: Add --funcs to show available functions in symtab
Add --funcs to show available functions in symtab.

Originally this feature came from Srikar's uprobes patches
( http://lkml.org/lkml/2010/8/27/244 )

e.g.
...
__ablkcipher_walk_complete
__absent_pages_in_range
__account_scheduler_latency
__add_pages
__alloc_pages_nodemask
__alloc_percpu
__alloc_reserved_percpu
__alloc_skb
__alloc_workqueue_key
__any_online_cpu
__ata_ehi_push_desc
...

This also supports symbols in module, e.g.

...
cleanup_module
cpuid_maxphyaddr
emulate_clts
emulate_instruction
emulate_int_real
emulate_invlpg
emulator_get_dr
emulator_set_dr
emulator_task_switch
emulator_write_emulated
emulator_write_phys
fx_init
...

Original-patch-from: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Franck Bui-Huu <fbuihuu@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <20110113124611.22426.10835.stgit@ltc236.sdl.hitachi.co.jp>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
[ committer note: Add missing elf.h for STB_GLOBAL that broke a RHEL4 build ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2011-01-24 10:57:55 -02:00

137 lines
4.0 KiB
C

#ifndef _PROBE_EVENT_H
#define _PROBE_EVENT_H
#include <stdbool.h>
#include "strlist.h"
extern bool probe_event_dry_run;
/* kprobe-tracer tracing point */
struct probe_trace_point {
char *symbol; /* Base symbol */
unsigned long offset; /* Offset from symbol */
bool retprobe; /* Return probe flag */
};
/* probe-tracer tracing argument referencing offset */
struct probe_trace_arg_ref {
struct probe_trace_arg_ref *next; /* Next reference */
long offset; /* Offset value */
};
/* kprobe-tracer tracing argument */
struct probe_trace_arg {
char *name; /* Argument name */
char *value; /* Base value */
char *type; /* Type name */
struct probe_trace_arg_ref *ref; /* Referencing offset */
};
/* kprobe-tracer tracing event (point + arg) */
struct probe_trace_event {
char *event; /* Event name */
char *group; /* Group name */
struct probe_trace_point point; /* Trace point */
int nargs; /* Number of args */
struct probe_trace_arg *args; /* Arguments */
};
/* Perf probe probing point */
struct perf_probe_point {
char *file; /* File path */
char *function; /* Function name */
int line; /* Line number */
bool retprobe; /* Return probe flag */
char *lazy_line; /* Lazy matching pattern */
unsigned long offset; /* Offset from function entry */
};
/* Perf probe probing argument field chain */
struct perf_probe_arg_field {
struct perf_probe_arg_field *next; /* Next field */
char *name; /* Name of the field */
long index; /* Array index number */
bool ref; /* Referencing flag */
};
/* Perf probe probing argument */
struct perf_probe_arg {
char *name; /* Argument name */
char *var; /* Variable name */
char *type; /* Type name */
struct perf_probe_arg_field *field; /* Structure fields */
};
/* Perf probe probing event (point + arg) */
struct perf_probe_event {
char *event; /* Event name */
char *group; /* Group name */
struct perf_probe_point point; /* Probe point */
int nargs; /* Number of arguments */
struct perf_probe_arg *args; /* Arguments */
};
/* Line number container */
struct line_node {
struct list_head list;
int line;
};
/* Line range */
struct line_range {
char *file; /* File name */
char *function; /* Function name */
int start; /* Start line number */
int end; /* End line number */
int offset; /* Start line offset */
char *path; /* Real path name */
char *comp_dir; /* Compile directory */
struct list_head line_list; /* Visible lines */
};
/* List of variables */
struct variable_list {
struct probe_trace_point point; /* Actual probepoint */
struct strlist *vars; /* Available variables */
};
/* Command string to events */
extern int parse_perf_probe_command(const char *cmd,
struct perf_probe_event *pev);
/* Events to command string */
extern char *synthesize_perf_probe_command(struct perf_probe_event *pev);
extern char *synthesize_probe_trace_command(struct probe_trace_event *tev);
extern int synthesize_perf_probe_arg(struct perf_probe_arg *pa, char *buf,
size_t len);
/* Check the perf_probe_event needs debuginfo */
extern bool perf_probe_event_need_dwarf(struct perf_probe_event *pev);
/* Release event contents */
extern void clear_perf_probe_event(struct perf_probe_event *pev);
/* Command string to line-range */
extern int parse_line_range_desc(const char *cmd, struct line_range *lr);
/* Internal use: Return kernel/module path */
extern const char *kernel_get_module_path(const char *module);
extern int add_perf_probe_events(struct perf_probe_event *pevs, int npevs,
int max_probe_points, const char *module,
bool force_add);
extern int del_perf_probe_events(struct strlist *dellist);
extern int show_perf_probe_events(void);
extern int show_line_range(struct line_range *lr, const char *module);
extern int show_available_vars(struct perf_probe_event *pevs, int npevs,
int max_probe_points, const char *module,
bool externs);
extern int show_available_funcs(const char *module);
/* Maximum index number of event-name postfix */
#define MAX_EVENT_INDEX 1024
#endif /*_PROBE_EVENT_H */