This is more straightforward than what we have now.

It also fixes segfault within machine__exit, that's caused
but not creating kernel maps for machine.. We're calling
machine__destroy_kernel_maps in machine__exit since commit:

  ebe9729c8c31 perf machine: Fix to destroy kernel maps when machine exits

Link: http://lkml.kernel.org/n/tip-h20rqr6nyuqvcjqdmixvy...@git.kernel.org
Signed-off-by: Jiri Olsa <jo...@kernel.org>
---
 tools/perf/tests/dwarf-unwind.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/tools/perf/tests/dwarf-unwind.c b/tools/perf/tests/dwarf-unwind.c
index 3cce13b19cbb..1c5c0221cea2 100644
--- a/tools/perf/tests/dwarf-unwind.c
+++ b/tools/perf/tests/dwarf-unwind.c
@@ -160,14 +160,11 @@ static int krava_1(struct thread *thread)
 
 int test__dwarf_unwind(int subtest __maybe_unused)
 {
-       struct machines machines;
        struct machine *machine;
        struct thread *thread;
        int err = -1;
 
-       machines__init(&machines);
-
-       machine = machines__find(&machines, HOST_KERNEL_ID);
+       machine = machine__new_host();
        if (!machine) {
                pr_err("Could not get machine\n");
                return -1;
@@ -199,7 +196,6 @@ int test__dwarf_unwind(int subtest __maybe_unused)
 
  out:
        machine__delete_threads(machine);
-       machine__exit(machine);
-       machines__exit(&machines);
+       machine__delete(machine);
        return err;
 }
-- 
2.4.3

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