1 files changed, 118 insertions, 0 deletions
diff --git a/tools/testing/memblock/tests/common.c b/tools/testing/memblock/tests/common.c
index 62d3191f7c9a..e43b2676af81 100644
--- a/tools/testing/memblock/tests/common.c
+++ b/tools/testing/memblock/tests/common.c
@@ -1,11 +1,39 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 #include "tests/common.h"
 #include <string.h>
+#include <getopt.h>
+#include <linux/memory_hotplug.h>
+#include <linux/build_bug.h>
 
 #define INIT_MEMBLOCK_REGIONS			128
 #define INIT_MEMBLOCK_RESERVED_REGIONS		INIT_MEMBLOCK_REGIONS
+#define PREFIXES_MAX				15
+#define DELIM					": "
 
 static struct test_memory memory_block;
+static const char __maybe_unused *prefixes[PREFIXES_MAX];
+static int __maybe_unused nr_prefixes;
+
+static const char *short_opts = "mv";
+static const struct option long_opts[] = {
+	{"movable-node", 0, NULL, 'm'},
+	{"verbose", 0, NULL, 'v'},
+	{NULL, 0, NULL, 0}
+};
+
+static const char * const help_opts[] = {
+	"disallow allocations from regions marked as hotplugged\n\t\t\t"
+		"by simulating enabling the \"movable_node\" kernel\n\t\t\t"
+		"parameter",
+	"enable verbose output, which includes the name of the\n\t\t\t"
+		"memblock function being tested, the name of the test,\n\t\t\t"
+		"and whether the test passed or failed."
+};
+
+static int verbose;
+
+/* sets global variable returned by movable_node_is_enabled() stub */
+bool movable_node_enabled;
 
 void reset_memblock_regions(void)
 {
@@ -46,3 +74,93 @@ void dummy_physical_memory_cleanup(void)
 {
 	free(memory_block.base);
 }
+
+static void usage(const char *prog)
+{
+	BUILD_BUG_ON(ARRAY_SIZE(help_opts) != ARRAY_SIZE(long_opts) - 1);
+
+	printf("Usage: %s [-%s]\n", prog, short_opts);
+
+	for (int i = 0; long_opts[i].name; i++) {
+		printf("  -%c, --%-12s\t%s\n", long_opts[i].val,
+		       long_opts[i].name, help_opts[i]);
+	}
+
+	exit(1);
+}
+
+void parse_args(int argc, char **argv)
+{
+	int c;
+
+	while ((c = getopt_long_only(argc, argv, short_opts, long_opts,
+				     NULL)) != -1) {
+		switch (c) {
+		case 'm':
+			movable_node_enabled = true;
+			break;
+		case 'v':
+			verbose = 1;
+			break;
+		default:
+			usage(argv[0]);
+		}
+	}
+}
+
+void print_prefixes(const char *postfix)
+{
+	for (int i = 0; i < nr_prefixes; i++)
+		test_print("%s%s", prefixes[i], DELIM);
+	test_print(postfix);
+}
+
+void test_fail(void)
+{
+	if (verbose) {
+		ksft_test_result_fail(": ");
+		print_prefixes("failed\n");
+	}
+}
+
+void test_pass(void)
+{
+	if (verbose) {
+		ksft_test_result_pass(": ");
+		print_prefixes("passed\n");
+	}
+}
+
+void test_print(const char *fmt, ...)
+{
+	if (verbose) {
+		int saved_errno = errno;
+		va_list args;
+
+		va_start(args, fmt);
+		errno = saved_errno;
+		vprintf(fmt, args);
+		va_end(args);
+	}
+}
+
+void prefix_reset(void)
+{
+	memset(prefixes, 0, PREFIXES_MAX * sizeof(char *));
+	nr_prefixes = 0;
+}
+
+void prefix_push(const char *prefix)
+{
+	assert(nr_prefixes < PREFIXES_MAX);
+	prefixes[nr_prefixes] = prefix;
+	nr_prefixes++;
+}
+
+void prefix_pop(void)
+{
+	if (nr_prefixes > 0) {
+		prefixes[nr_prefixes - 1] = 0;
+		nr_prefixes--;
+	}
+}