[PATCH 22/26] perf tools: Use machine__for_each_dso in perf_session__cache_build_ids

Jiri Olsa
2020-09-13T21:05:47Z

Using machine__for_each_dso in perf_session__cache_build_ids,
so we can reuse perf_session__cache_build_ids with different
callback in following changes.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/util/build-id.c | 41 +++++++++++++++-----------------------
1 file changed, 16 insertions(+), 25 deletions(-)

diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index bf044e52ad1f..22968504c6de 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -869,12 +869,16 @@ int build_id_cache__remove_s(const char *sbuild_id)
return err;
}

-static int dso__cache_build_id(struct dso *dso, struct machine *machine)
+static int dso__cache_build_id(struct dso *dso, struct machine *machine,
+ void *priv __maybe_unused)
{
bool is_kallsyms = dso__is_kallsyms(dso);
bool is_vdso = dso__is_vdso(dso);
const char *name = dso->long_name;

+ if (!dso->has_build_id)
+ return 0;
+
if (dso__is_kcore(dso)) {
is_kallsyms = true;
name = machine->mmap_name;
@@ -883,43 +887,30 @@ static int dso__cache_build_id(struct dso *dso, struct machine *machine)
dso->nsinfo, is_kallsyms, is_vdso);
}

-static int __dsos__cache_build_ids(struct list_head *head,
- struct machine *machine)
+static int
+machines__for_each_dso(struct machines *machines, machine__dso_t fn, void *priv)
{
- struct dso *pos;
- int err = 0;
-
- dsos__for_each_with_build_id(pos, head)
- if (dso__cache_build_id(pos, machine))
- err = -1;
+ int ret = machine__for_each_dso(&machines->host, fn, priv);
+ struct rb_node *nd;

- return err;
-}
+ for (nd = rb_first_cached(&machines->guests); nd;
+ nd = rb_next(nd)) {
+ struct machine *pos = rb_entry(nd, struct machine, rb_node);

-static int machine__cache_build_ids(struct machine *machine)
-{
- return __dsos__cache_build_ids(&machine->dsos.head, machine);
+ ret |= machine__for_each_dso(pos, fn, priv);
+ }
+ return ret ? -1 : 0;
}

int perf_session__cache_build_ids(struct perf_session *session)
{
- struct rb_node *nd;
- int ret;
-
if (no_buildid_cache)
return 0;

if (mkdir(buildid_dir, 0755) != 0 && errno != EEXIST)
return -1;

- ret = machine__cache_build_ids(&session->machines.host);
-
- for (nd = rb_first_cached(&session->machines.guests); nd;
- nd = rb_next(nd)) {
- struct machine *pos = rb_entry(nd, struct machine, rb_node);
- ret |= machine__cache_build_ids(pos);
- }
- return ret ? -1 : 0;
+ return machines__for_each_dso(&session->machines, dso__cache_build_id, NULL) ? -1 : 0;
}

static bool machine__read_build_ids(struct machine *machine, bool with_hits)
--
2.26.2