lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

perf probe: Check build-id of vmlinux

Browse Source 
Check build-id of vmlinux by using functions in symbol.c.
This also exposes map__load() for getting vmlinux path,
and removes vmlinux path list in builtin-probe.c,
because symbol.c already has that. Checking build-id
prevents users to open old or different debuginfo from
current running kernel.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@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: 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>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20091215153232.17436.45539.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Masami Hiramatsu
2009-12-15 10:32:33 -05:00
committed by Ingo Molnar
parent d761b08bff
commit a128168d1e
3 changed files with 41 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
tools/perf/util/map.c
View File

@@ -104,12 +104,16 @@ void map__fixup_end(struct map *self)
#define DSO__DELETED "(deleted)"
static int map__load(struct map *self, struct perf_session *session,
symbol_filter_t filter)
int map__load(struct map *self, struct perf_session *session,
symbol_filter_t filter)
{
const char *name = self->dso->long_name;
int nr = dso__load(self->dso, self, session, filter);
int nr;
if (dso__loaded(self->dso, self->type))
return 0;
nr = dso__load(self->dso, self, session, filter);
if (nr < 0) {
if (self->dso->has_build_id) {
char sbuild_id[BUILD_ID_SIZE * 2 + 1];
@@ -147,7 +151,7 @@ static int map__load(struct map *self, struct perf_session *session,
struct symbol *map__find_symbol(struct map *self, struct perf_session *session,
u64 addr, symbol_filter_t filter)
{
if (!dso__loaded(self->dso, self->type) && map__load(self, session, filter) < 0)
if (map__load(self, session, filter) < 0)
return NULL;
return dso__find_symbol(self->dso, self->type, addr);
@@ -157,7 +161,7 @@ struct symbol *map__find_symbol_by_name(struct map *self, const char *name,
struct perf_session *session,
symbol_filter_t filter)
{
if (!dso__loaded(self->dso, self->type) && map__load(self, session, filter) < 0)
if (map__load(self, session, filter) < 0)
return NULL;
if (!dso__sorted_by_name(self->dso, self->type))