linux/tools/perf/util/probe-finder.h
Masami Hiramatsu b0ef073243 perf/probes: Support function entry relative line number
Add function-entry relative line number specifying support to
perf-probe. This allows users to define probes by line number
from entry of the function.

 e.g.

  perf probe schedule:16

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Frank Ch. Eigler <fche@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: K.Prasad <prasad@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
LKML-Reference: <20091027204319.30545.30678.stgit@harusame>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-29 08:47:49 +01:00

57 lines
1.4 KiB
C

#ifndef _PROBE_FINDER_H
#define _PROBE_FINDER_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] == '_';
}
struct probe_point {
/* Inputs */
char *file; /* File name */
int line; /* Line number */
char *function; /* Function name */
int offset; /* Offset bytes */
int nr_args; /* Number of arguments */
char **args; /* Arguments */
int retprobe; /* Return probe */
/* Output */
int found; /* Number of found probe points */
char *probes[MAX_PROBES]; /* Output buffers (will be allocated)*/
};
#ifndef NO_LIBDWARF
extern int find_probepoint(int fd, struct probe_point *pp);
#include <libdwarf/dwarf.h>
#include <libdwarf/libdwarf.h>
struct probe_finder {
struct probe_point *pp; /* Target probe point */
/* For function searching */
Dwarf_Addr addr; /* Address */
Dwarf_Unsigned fno; /* File number */
Dwarf_Unsigned lno; /* Line number */
Dwarf_Off inl_offs; /* Inline offset */
Dwarf_Die cu_die; /* Current CU */
/* For variable searching */
Dwarf_Addr cu_base; /* Current CU base address */
Dwarf_Locdesc fbloc; /* Location of Current Frame Base */
const char *var; /* Current variable name */
char *buf; /* Current output buffer */
int len; /* Length of output buffer */
};
#endif /* NO_LIBDWARF */
#endif /*_PROBE_FINDER_H */