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perf probe: Introduce kprobe_trace_event and perf_probe_event

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Introduce kprobe_trace_event and perf_probe_event and replace
old probe_point structure with it. probe_point structure is
not enough flexible nor extensible. New data structures
will help implementing further features.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20100316220612.32050.33806.stgit@localhost6.localdomain6>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Masami Hiramatsu
2010-03-16 18:06:12 -04:00
committed by Ingo Molnar
parent f4d7da499e
commit 4235b0454e
5 changed files with 605 additions and 392 deletions
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111
tools/perf/util/probe-event.h
View File

@@ -2,24 +2,113 @@
#define _PROBE_EVENT_H
#include <stdbool.h>
#include "probe-finder.h"
#include "strlist.h"
extern bool probe_event_dry_run;
extern void parse_line_range_desc(const char *arg, struct line_range *lr);
extern void parse_perf_probe_event(const char *str, struct probe_point *pp,
bool *need_dwarf);
extern int synthesize_perf_probe_point(struct probe_point *pp);
extern int synthesize_perf_probe_event(struct probe_point *pp);
extern void parse_trace_kprobe_event(const char *str, struct probe_point *pp);
extern int synthesize_trace_kprobe_event(struct probe_point *pp);
extern void add_trace_kprobe_events(struct probe_point *probes, int nr_probes,
bool force_add, bool need_dwarf);
extern void del_trace_kprobe_events(struct strlist *dellist);
/* kprobe-tracer tracing point */
struct kprobe_trace_point {
char *symbol; /* Base symbol */
unsigned long offset; /* Offset from symbol */
bool retprobe; /* Return probe flag */
};
/* kprobe-tracer tracing argument referencing offset */
struct kprobe_trace_arg_ref {
struct kprobe_trace_arg_ref *next; /* Next reference */
long offset; /* Offset value */
};
/* kprobe-tracer tracing argument */
struct kprobe_trace_arg {
char *name; /* Argument name */
char *value; /* Base value */
struct kprobe_trace_arg_ref *ref; /* Referencing offset */
};
/* kprobe-tracer tracing event (point + arg) */
struct kprobe_trace_event {
char *event; /* Event name */
char *group; /* Group name */
struct kprobe_trace_point point; /* Trace point */
int nargs; /* Number of args */
struct kprobe_trace_arg *args; /* Arguments */
};
/* Perf probe probing point */
struct perf_probe_point {
char *file; /* File path */
char *function; /* Function name */
int line; /* Line number */
char *lazy_line; /* Lazy matching pattern */
unsigned long offset; /* Offset from function entry */
bool retprobe; /* Return probe flag */
};
/* Perf probe probing argument */
struct perf_probe_arg {
char *name; /* Argument name */
};
/* 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;
unsigned int line;
};
/* Line range */
struct line_range {
char *file; /* File name */
char *function; /* Function name */
unsigned int start; /* Start line number */
unsigned int end; /* End line number */
int offset; /* Start line offset */
char *path; /* Real path name */
struct list_head line_list; /* Visible lines */
};
/* Command string to events */
extern void parse_perf_probe_command(const char *cmd,
struct perf_probe_event *pev);
extern void parse_kprobe_trace_command(const char *cmd,
struct kprobe_trace_event *tev);
/* Events to command string */
extern char *synthesize_perf_probe_command(struct perf_probe_event *pev);
extern char *synthesize_kprobe_trace_command(struct kprobe_trace_event *tev);
/* Check the perf_probe_event needs debuginfo */
extern bool perf_probe_event_need_dwarf(struct perf_probe_event *pev);
/* Convert from kprobe_trace_event to perf_probe_event */
extern void convert_to_perf_probe_event(struct kprobe_trace_event *tev,
struct perf_probe_event *pev);
/* Release event contents */
extern void clear_perf_probe_event(struct perf_probe_event *pev);
extern void clear_kprobe_trace_event(struct kprobe_trace_event *tev);
/* Command string to line-range */
extern void parse_line_range_desc(const char *cmd, struct line_range *lr);
extern void add_perf_probe_events(struct perf_probe_event *pevs, int ntevs,
bool force_add);
extern void del_perf_probe_events(struct strlist *dellist);
extern void show_perf_probe_events(void);
extern void show_line_range(struct line_range *lr);
/* Maximum index number of event-name postfix */
#define MAX_EVENT_INDEX 1024