[v6,06/12] app/mldev: add test case to interleave inferences

diff --git a/app/test-mldev/meson.build b/app/test-mldev/meson.build
index 475d76d126..41d22fb22c 100644
--- a/app/test-mldev/meson.build
+++ b/app/test-mldev/meson.build
@@ -18,6 +18,7 @@  sources = files(
         'test_model_ops.c',
         'test_inference_common.c',
         'test_inference_ordered.c',
+        'test_inference_interleave.c',
 )
 
 deps += ['mldev']
diff --git a/app/test-mldev/ml_options.c b/app/test-mldev/ml_options.c
index b7215a7e88..f9e3ce8e6f 100644
--- a/app/test-mldev/ml_options.c
+++ b/app/test-mldev/ml_options.c
@@ -156,7 +156,8 @@  ml_dump_test_options(const char *testname)
 		printf("\n");
 	}
 
-	if (strcmp(testname, "inference_ordered") == 0) {
+	if ((strcmp(testname, "inference_ordered") == 0) ||
+	    (strcmp(testname, "inference_interleave") == 0)) {
 		printf("\t\t--filelist         : comma separated list of model, input and output\n"
 		       "\t\t--repetitions      : number of inference repetitions\n");
 		printf("\n");
diff --git a/app/test-mldev/test_inference_interleave.c b/app/test-mldev/test_inference_interleave.c
new file mode 100644
index 0000000000..9cf4cfa197
--- /dev/null
+++ b/app/test-mldev/test_inference_interleave.c
@@ -0,0 +1,114 @@ 
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2022 Marvell.
+ */
+
+#include <rte_common.h>
+#include <rte_launch.h>
+
+#include "ml_common.h"
+#include "test_inference_common.h"
+
+static int
+test_inference_interleave_driver(struct ml_test *test, struct ml_options *opt)
+{
+	struct test_inference *t;
+	uint16_t fid = 0;
+	int ret = 0;
+
+	t = ml_test_priv(test);
+
+	ret = ml_inference_mldev_setup(test, opt);
+	if (ret != 0)
+		return ret;
+
+	ret = ml_inference_mem_setup(test, opt);
+	if (ret != 0)
+		return ret;
+
+	/* load and start all models */
+	for (fid = 0; fid < opt->nb_filelist; fid++) {
+		ret = ml_model_load(test, opt, &t->model[fid], fid);
+		if (ret != 0)
+			goto error;
+
+		ret = ml_model_start(test, opt, &t->model[fid], fid);
+		if (ret != 0)
+			goto error;
+
+		ret = ml_inference_iomem_setup(test, opt, fid);
+		if (ret != 0)
+			goto error;
+	}
+
+	/* launch inference requests */
+	ret = ml_inference_launch_cores(test, opt, 0, opt->nb_filelist - 1);
+	if (ret != 0) {
+		ml_err("failed to launch cores");
+		goto error;
+	}
+
+	rte_eal_mp_wait_lcore();
+
+	/* stop and unload all models */
+	for (fid = 0; fid < opt->nb_filelist; fid++) {
+		ret = ml_inference_result(test, opt, fid);
+		if (ret != ML_TEST_SUCCESS)
+			goto error;
+
+		ml_inference_iomem_destroy(test, opt, fid);
+
+		ret = ml_model_stop(test, opt, &t->model[fid], fid);
+		if (ret != 0)
+			goto error;
+
+		ret = ml_model_unload(test, opt, &t->model[fid], fid);
+		if (ret != 0)
+			goto error;
+	}
+
+	ml_inference_mem_destroy(test, opt);
+
+	ret = ml_inference_mldev_destroy(test, opt);
+	if (ret != 0)
+		return ret;
+
+	t->cmn.result = ML_TEST_SUCCESS;
+
+	return 0;
+
+error:
+	ml_inference_mem_destroy(test, opt);
+	for (fid = 0; fid < opt->nb_filelist; fid++) {
+		ml_inference_iomem_destroy(test, opt, fid);
+		ml_model_stop(test, opt, &t->model[fid], fid);
+		ml_model_unload(test, opt, &t->model[fid], fid);
+	}
+
+	t->cmn.result = ML_TEST_FAILED;
+
+	return ret;
+}
+
+static int
+test_inference_interleave_result(struct ml_test *test, struct ml_options *opt)
+{
+	struct test_inference *t;
+
+	RTE_SET_USED(opt);
+
+	t = ml_test_priv(test);
+
+	return t->cmn.result;
+}
+
+static const struct ml_test_ops inference_interleave = {
+	.cap_check = test_inference_cap_check,
+	.opt_check = test_inference_opt_check,
+	.opt_dump = test_inference_opt_dump,
+	.test_setup = test_inference_setup,
+	.test_destroy = test_inference_destroy,
+	.test_driver = test_inference_interleave_driver,
+	.test_result = test_inference_interleave_result,
+};
+
+ML_TEST_REGISTER(inference_interleave);