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perf probe: Don't use a perf_session instance just to resolve symbols

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With the recent modifications done to untie the session and
symbol layers, 'perf probe' now can use just the symbols layer.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo 2010-02-03 16:52:03 -02:00 committed by Ingo Molnar
parent 8d92c02ab0
commit 8ad94c6052
1 changed files with 13 additions and 13 deletions
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26
tools/perf/builtin-probe.c
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@ -41,7 +41,6 @@
#include "util/debugfs.h"
#include "util/symbol.h"
#include "util/thread.h"
#include "util/session.h"
#include "util/parse-options.h"
#include "util/parse-events.h" /* For debugfs_path */
#include "util/probe-finder.h"
@ -59,8 +58,8 @@ static struct {
int nr_probe;
struct probe_point probes[MAX_PROBES];
struct strlist *dellist;
struct perf_session *psession;
struct map *kmap;
struct map_groups kmap_groups;
struct map *kmaps[MAP__NR_TYPES];
struct line_range line_range;
} session;
@ -122,7 +121,8 @@ static int opt_del_probe_event(const struct option *opt __used,
static void evaluate_probe_point(struct probe_point *pp)
{
struct symbol *sym;
sym = map__find_symbol_by_name(session.kmap, pp->function, NULL);
sym = map__find_symbol_by_name(session.kmaps[MAP__FUNCTION],
pp->function, NULL);
if (!sym)
die("Kernel symbol \'%s\' not found - probe not added.",
pp->function);
@ -131,12 +131,13 @@ static void evaluate_probe_point(struct probe_point *pp)
#ifndef NO_LIBDWARF
static int open_vmlinux(void)
{
if (map__load(session.kmap, NULL) < 0) {
if (map__load(session.kmaps[MAP__FUNCTION], NULL) < 0) {
pr_debug("Failed to load kernel map.\n");
return -EINVAL;
}
pr_debug("Try to open %s\n", session.kmap->dso->long_name);
return open(session.kmap->dso->long_name, O_RDONLY);
pr_debug("Try to open %s\n",
session.kmaps[MAP__FUNCTION]->dso->long_name);
return open(session.kmaps[MAP__FUNCTION]->dso->long_name, O_RDONLY);
}
static int opt_show_lines(const struct option *opt __used,
@ -212,12 +213,11 @@ static void init_vmlinux(void)
pr_debug("Use vmlinux: %s\n", symbol_conf.vmlinux_name);
if (symbol__init() < 0)
die("Failed to init symbol map.");
session.psession = perf_session__new(NULL, O_WRONLY, false);
if (session.psession == NULL)
die("Failed to init perf_session.");
session.kmap = session.psession->vmlinux_maps[MAP__FUNCTION];
if (!session.kmap)
die("Could not find kernel map.\n");
map_groups__init(&session.kmap_groups);
if (map_groups__create_kernel_maps(&session.kmap_groups,
session.kmaps) < 0)
die("Failed to create kernel maps.");
}
int cmd_probe(int argc, const char **argv, const char *prefix __used)