From c57f5eaa094ee93b4e27f6624349bc90d41a4e68 Mon Sep 17 00:00:00 2001
From: Jiri Olsa <jolsa@kernel.org>
Date: Sun, 13 Sep 2020 23:03:08 +0200
Subject: [PATCH] perf machine: Add machine__for_each_dso() function

Add the machine__for_each_dso() to iterate over all dso objects defined
for the within a machine object. It will be used in the MMAP3 patch
series.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Frank Ch. Eigler <fche@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20200913210313.1985612-22-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/machine.c | 12 ++++++++++++
 tools/perf/util/machine.h |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 85587de027a51..7d4194ffc5b08 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -3100,3 +3100,15 @@ char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, ch
 	*addrp = map->unmap_ip(map, sym->start);
 	return sym->name;
 }
+
+int machine__for_each_dso(struct machine *machine, machine__dso_t fn, void *priv)
+{
+	struct dso *pos;
+	int err = 0;
+
+	list_for_each_entry(pos, &machine->dsos.head, node) {
+		if (fn(pos, machine, priv))
+			err = -1;
+	}
+	return err;
+}
diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h
index 062c36a8433ce..26368d3c17543 100644
--- a/tools/perf/util/machine.h
+++ b/tools/perf/util/machine.h
@@ -250,6 +250,10 @@ void machines__destroy_kernel_maps(struct machines *machines);
 
 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp);
 
+typedef int (*machine__dso_t)(struct dso *dso, struct machine *machine, void *priv);
+
+int machine__for_each_dso(struct machine *machine, machine__dso_t fn,
+			  void *priv);
 int machine__for_each_thread(struct machine *machine,
 			     int (*fn)(struct thread *thread, void *p),
 			     void *priv);