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| author | Masami Hiramatsu <mhiramat@redhat.com> | 2009-12-15 10:32:33 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-12-15 20:22:04 +0100 |
| commit | a128168d1e79e537d6666655e7771d973e9230e3 (patch) | |
| tree | 73f8581954751bd9927182e3ac984d925faefade /tools/perf/util/map.c | |
| parent | d761b08bff0a9b653f6bd248cea50322e7eccb14 (diff) | |
| download | lwn-a128168d1e79e537d6666655e7771d973e9230e3.tar.gz lwn-a128168d1e79e537d6666655e7771d973e9230e3.zip | |
perf probe: Check build-id of vmlinux
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>
Diffstat (limited to 'tools/perf/util/map.c')
| -rw-r--r-- | tools/perf/util/map.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index 8b3dd467adb5..c4d55a0da2ea 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -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)) |