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perf probe: Use elfutils-libdw for analyzing debuginfo

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Newer gcc introduces newer & richer debuginfo, and only libdw
in elfutils project can support it. So perf probe moves onto
elfutils-libdw from libdwarf.

Changes in v3:
 - Cast Dwarf_Addr/Dwarf_Word to uintmax_t for printf-formats.
 - Recover a sign-prefix which was removed in v2 by mistake.

Changes in v2:
 - Fix a type-casting bug in Makefile.
 - Cast Dwarf_Addr/Dwarf_Word to unsigned long long for printf-formats.

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: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: K.Prasad <prasad@linux.vnet.ibm.com>
Cc: Ulrich Drepper <drepper@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
LKML-Reference: <20100225133542.6725.34724.stgit@localhost6.localdomain6>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Masami Hiramatsu
2010-02-25 08:35:42 -05:00
committed by Ingo Molnar
parent 81cb8aa327
commit 804b36068e
4 changed files with 319 additions and 471 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/perf/builtin-probe.c
+11 -11
View File
@@ -128,7 +128,7 @@ static void evaluate_probe_point(struct probe_point *pp)
pp->function);
}
#ifndef NO_LIBDWARF
#ifndef NO_DWARF_SUPPORT
static int open_vmlinux(void)
{
if (map__load(session.kmaps[MAP__FUNCTION], NULL) < 0) {
@@ -156,7 +156,7 @@ static const char * const probe_usage[] = {
"perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...]",
"perf probe [<options>] --del '[GROUP:]EVENT' ...",
"perf probe --list",
#ifndef NO_LIBDWARF
#ifndef NO_DWARF_SUPPORT
"perf probe --line 'LINEDESC'",
#endif
NULL
@@ -165,7 +165,7 @@ static const char * const probe_usage[] = {
static const struct option options[] = {
OPT_BOOLEAN('v', "verbose", &verbose,
"be more verbose (show parsed arguments, etc)"),
#ifndef NO_LIBDWARF
#ifndef NO_DWARF_SUPPORT
OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
"file", "vmlinux pathname"),
#endif
@@ -174,7 +174,7 @@ static const struct option options[] = {
OPT_CALLBACK('d', "del", NULL, "[GROUP:]EVENT", "delete a probe event.",
opt_del_probe_event),
OPT_CALLBACK('a', "add", NULL,
#ifdef NO_LIBDWARF
#ifdef NO_DWARF_SUPPORT
"[EVENT=]FUNC[+OFFS|%return] [ARG ...]",
#else
"[EVENT=]FUNC[+OFFS|%return|:RLN][@SRC]|SRC:ALN [ARG ...]",
@@ -185,7 +185,7 @@ static const struct option options[] = {
"\t\tFUNC:\tFunction name\n"
"\t\tOFFS:\tOffset from function entry (in byte)\n"
"\t\t%return:\tPut the probe at function return\n"
#ifdef NO_LIBDWARF
#ifdef NO_DWARF_SUPPORT
"\t\tARG:\tProbe argument (only \n"
#else
"\t\tSRC:\tSource code path\n"
@@ -197,7 +197,7 @@ static const struct option options[] = {
opt_add_probe_event),
OPT_BOOLEAN('f', "force", &session.force_add, "forcibly add events"
" with existing name"),
#ifndef NO_LIBDWARF
#ifndef NO_DWARF_SUPPORT
OPT_CALLBACK('L', "line", NULL,
"FUNC[:RLN[+NUM|:RLN2]]|SRC:ALN[+NUM|:ALN2]",
"Show source code lines.", opt_show_lines),
@@ -225,7 +225,7 @@ static void init_vmlinux(void)
int cmd_probe(int argc, const char **argv, const char *prefix __used)
{
int i, ret;
#ifndef NO_LIBDWARF
#ifndef NO_DWARF_SUPPORT
int fd;
#endif
struct probe_point *pp;
@@ -261,7 +261,7 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
return 0;
}
#ifndef NO_LIBDWARF
#ifndef NO_DWARF_SUPPORT
if (session.show_lines) {
if (session.nr_probe != 0 || session.dellist) {
pr_warning(" Error: Don't use --line with"
@@ -292,9 +292,9 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
init_vmlinux();
if (session.need_dwarf)
#ifdef NO_LIBDWARF
#ifdef NO_DWARF_SUPPORT
die("Debuginfo-analysis is not supported");
#else /* !NO_LIBDWARF */
#else /* !NO_DWARF_SUPPORT */
pr_debug("Some probes require debuginfo.\n");
fd = open_vmlinux();
@@ -335,7 +335,7 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
close(fd);
end_dwarf:
#endif /* !NO_LIBDWARF */
#endif /* !NO_DWARF_SUPPORT */
/* Synthesize probes without dwarf */
for (i = 0; i < session.nr_probe; i++) {