mirror of
https://github.com/torvalds/linux
synced 2024-09-27 23:10:58 +00:00
7752f1b096
Check elfutils version, and if it is old don't compile CFI analysis code. This allows to compile perf with old elfutils. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Tested-by: Stephane Eranian <eranian@google.com> Reported-by: Robert Richter <robert.richter@amd.com> Cc: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20100510171207.26029.97604.stgit@localhost6.localdomain6> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
#ifndef _PROBE_FINDER_H
|
|
#define _PROBE_FINDER_H
|
|
|
|
#include <stdbool.h>
|
|
#include "util.h"
|
|
#include "probe-event.h"
|
|
|
|
#define MAX_PATH_LEN 256
|
|
#define MAX_PROBE_BUFFER 1024
|
|
#define MAX_PROBES 128
|
|
|
|
static inline int is_c_varname(const char *name)
|
|
{
|
|
/* TODO */
|
|
return isalpha(name[0]) || name[0] == '_';
|
|
}
|
|
|
|
#ifdef DWARF_SUPPORT
|
|
/* Find kprobe_trace_events specified by perf_probe_event from debuginfo */
|
|
extern int find_kprobe_trace_events(int fd, struct perf_probe_event *pev,
|
|
struct kprobe_trace_event **tevs,
|
|
int max_tevs);
|
|
|
|
/* Find a perf_probe_point from debuginfo */
|
|
extern int find_perf_probe_point(int fd, unsigned long addr,
|
|
struct perf_probe_point *ppt);
|
|
|
|
extern int find_line_range(int fd, struct line_range *lr);
|
|
|
|
#include <dwarf.h>
|
|
#include <libdw.h>
|
|
#include <version.h>
|
|
|
|
struct probe_finder {
|
|
struct perf_probe_event *pev; /* Target probe event */
|
|
struct kprobe_trace_event *tevs; /* Result trace events */
|
|
int ntevs; /* Number of trace events */
|
|
int max_tevs; /* Max number of trace events */
|
|
|
|
/* For function searching */
|
|
int lno; /* Line number */
|
|
Dwarf_Addr addr; /* Address */
|
|
const char *fname; /* Real file name */
|
|
Dwarf_Die cu_die; /* Current CU */
|
|
struct list_head lcache; /* Line cache for lazy match */
|
|
|
|
/* For variable searching */
|
|
#if _ELFUTILS_PREREQ(0, 142)
|
|
Dwarf_CFI *cfi; /* Call Frame Information */
|
|
#endif
|
|
Dwarf_Op *fb_ops; /* Frame base attribute */
|
|
struct perf_probe_arg *pvar; /* Current target variable */
|
|
struct kprobe_trace_arg *tvar; /* Current result variable */
|
|
};
|
|
|
|
struct line_finder {
|
|
struct line_range *lr; /* Target line range */
|
|
|
|
const char *fname; /* File name */
|
|
int lno_s; /* Start line number */
|
|
int lno_e; /* End line number */
|
|
Dwarf_Die cu_die; /* Current CU */
|
|
int found;
|
|
};
|
|
|
|
#endif /* DWARF_SUPPORT */
|
|
|
|
#endif /*_PROBE_FINDER_H */
|