perf dsos: Introduce dsos__for_each_dso()

To better abstract the dsos internals, introduce dsos__for_each_dso that
does a callback on each dso.

This also means the read lock can be correctly held.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Anne Macedo <retpolanne@posteo.net>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ben Gainey <ben.gainey@arm.com>
Cc: Changbin Du <changbin.du@huawei.com>
Cc: Chengen Du <chengen.du@canonical.com>
Cc: Colin Ian King <colin.i.king@gmail.com>
Cc: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Li Dong <lidong@vivo.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Markus Elfring <Markus.Elfring@web.de>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paran Lee <p4ranlee@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Song Liu <song@kernel.org>
Cc: Sun Haiyong <sunhaiyong@loongson.cn>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Yanteng Si <siyanteng@loongson.cn>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: zhaimingbing <zhaimingbing@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20240410064214.2755936-4-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 15 insertions, 10 deletions

diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index ef73317e6ae7..ce5e28eaad90 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -1187,23 +1187,28 @@ static int synthesize_build_id(struct perf_inject *inject, struct dso *dso, pid_
 					       process_build_id, machine);
 }
 
+static int guest_session__add_build_ids_cb(struct dso *dso, void *data)
+{
+	struct guest_session *gs = data;
+	struct perf_inject *inject = container_of(gs, struct perf_inject, guest_session);
+
+	if (!dso->has_build_id)
+		return 0;
+
+	return synthesize_build_id(inject, dso, gs->machine_pid);
+
+}
+
 static int guest_session__add_build_ids(struct guest_session *gs)
 {
 	struct perf_inject *inject = container_of(gs, struct perf_inject, guest_session);
-	struct machine *machine = &gs->session->machines.host;
-	struct dso *dso;
-	int ret;
 
 	/* Build IDs will be put in the Build ID feature section */
 	perf_header__set_feat(&inject->session->header, HEADER_BUILD_ID);
 
-	dsos__for_each_with_build_id(dso, &machine->dsos.head) {
-		ret = synthesize_build_id(inject, dso, gs->machine_pid);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
+	return dsos__for_each_dso(&gs->session->machines.host.dsos,
+				  guest_session__add_build_ids_cb,
+				  gs);
 }
 
 static int guest_session__ksymbol_event(struct perf_tool *tool,