// SPDX-License-Identifier: GPL-2.0#include <linux/compiler.h>#include <linux/kernel.h>#include "tests.h"#include "map.h"#include "maps.h"#include "dso.h"#include "debug.h" struct map_def {	const char *name;	u64 start;	u64 end;}; static int check_maps(struct map_def *merged, unsigned int size, struct maps *maps){	struct map *map;	unsigned int i = 0; 	maps__for_each_entry(maps, map) {		if (i > 0)			TEST_ASSERT_VAL("less maps expected", (map && i < size) || (!map && i == size)); 		TEST_ASSERT_VAL("wrong map start",  map->start == merged[i].start);		TEST_ASSERT_VAL("wrong map end",    map->end == merged[i].end);		TEST_ASSERT_VAL("wrong map name",  !strcmp(map->dso->name, merged[i].name));		TEST_ASSERT_VAL("wrong map refcnt", refcount_read(&map->refcnt) == 1); 		i++;	} 	return TEST_OK;} int test__maps__merge_in(struct test *t __maybe_unused, int subtest __maybe_unused){	struct maps maps;	unsigned int i;	struct map_def bpf_progs[] = {		{ "bpf_prog_1", 200, 300 },		{ "bpf_prog_2", 500, 600 },		{ "bpf_prog_3", 800, 900 },	};	struct map_def merged12[] = {		{ "kcore1",     100,  200 },		{ "bpf_prog_1", 200,  300 },		{ "kcore1",     300,  500 },		{ "bpf_prog_2", 500,  600 },		{ "kcore1",     600,  800 },		{ "bpf_prog_3", 800,  900 },		{ "kcore1",     900, 1000 },	};	struct map_def merged3[] = {		{ "kcore1",      100,  200 },		{ "bpf_prog_1",  200,  300 },		{ "kcore1",      300,  500 },		{ "bpf_prog_2",  500,  600 },		{ "kcore1",      600,  800 },		{ "bpf_prog_3",  800,  900 },		{ "kcore1",      900, 1000 },		{ "kcore3",     1000, 1100 },	};	struct map *map_kcore1, *map_kcore2, *map_kcore3;	int ret; 	maps__init(&maps, NULL); 	for (i = 0; i < ARRAY_SIZE(bpf_progs); i++) {		struct map *map; 		map = dso__new_map(bpf_progs[i].name);		TEST_ASSERT_VAL("failed to create map", map); 		map->start = bpf_progs[i].start;		map->end   = bpf_progs[i].end;		maps__insert(&maps, map);		map__put(map);	} 	map_kcore1 = dso__new_map("kcore1");	TEST_ASSERT_VAL("failed to create map", map_kcore1); 	map_kcore2 = dso__new_map("kcore2");	TEST_ASSERT_VAL("failed to create map", map_kcore2); 	map_kcore3 = dso__new_map("kcore3");	TEST_ASSERT_VAL("failed to create map", map_kcore3); 	/* kcore1 map overlaps over all bpf maps */	map_kcore1->start = 100;	map_kcore1->end   = 1000; 	/* kcore2 map hides behind bpf_prog_2 */	map_kcore2->start = 550;	map_kcore2->end   = 570; 	/* kcore3 map hides behind bpf_prog_3, kcore1 and adds new map */	map_kcore3->start = 880;	map_kcore3->end   = 1100; 	ret = maps__merge_in(&maps, map_kcore1);	TEST_ASSERT_VAL("failed to merge map", !ret); 	ret = check_maps(merged12, ARRAY_SIZE(merged12), &maps);	TEST_ASSERT_VAL("merge check failed", !ret); 	ret = maps__merge_in(&maps, map_kcore2);	TEST_ASSERT_VAL("failed to merge map", !ret); 	ret = check_maps(merged12, ARRAY_SIZE(merged12), &maps);	TEST_ASSERT_VAL("merge check failed", !ret); 	ret = maps__merge_in(&maps, map_kcore3);	TEST_ASSERT_VAL("failed to merge map", !ret); 	ret = check_maps(merged3, ARRAY_SIZE(merged3), &maps);	TEST_ASSERT_VAL("merge check failed", !ret);	return TEST_OK;}