[linux.git] / tools / perf / tests / maps.c

// 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;
}
Commit	Line	Data
5875cf4c	1	// SPDX-License-Identifier: GPL-2.0
4f600bcf JO	2	#include <linux/compiler.h>
	3	#include <linux/kernel.h>
	4	#include "tests.h"
	5	#include "map.h"
c54d241b	6	#include "maps.h"
4f600bcf JO	7	#include "dso.h"
	8	#include "debug.h"
	9
	10	struct map_def {
	11	const char *name;
	12	u64 start;
	13	u64 end;
	14	};
	15
79b6bb73	16	static int check_maps(struct map_def merged, unsigned int size, struct maps maps)
4f600bcf JO	17	{
	18	struct map *map;
	19	unsigned int i = 0;
	20
79b6bb73	21	maps__for_each_entry(maps, map) {
50481461 ACM	22	if (i > 0)
	23	TEST_ASSERT_VAL("less maps expected", (map && i < size) \|\| (!map && i == size));
	24
4f600bcf JO	25	TEST_ASSERT_VAL("wrong map start", map->start == merged[i].start);
	26	TEST_ASSERT_VAL("wrong map end", map->end == merged[i].end);
	27	TEST_ASSERT_VAL("wrong map name", !strcmp(map->dso->name, merged[i].name));
c5c584d2	28	TEST_ASSERT_VAL("wrong map refcnt", refcount_read(&map->refcnt) == 1);
4f600bcf JO	29
4f600bcf JO	30	i++;
4f600bcf JO	31	}
	32
	33	return TEST_OK;
	34	}
	35
a5732681	36	int test__maps__merge_in(struct test *t __maybe_unused, int subtest __maybe_unused)
4f600bcf	37	{
9a29ceee	38	struct maps maps;
4f600bcf JO	39	unsigned int i;
	40	struct map_def bpf_progs[] = {
	41	{ "bpf_prog_1", 200, 300 },
	42	{ "bpf_prog_2", 500, 600 },
	43	{ "bpf_prog_3", 800, 900 },
	44	};
	45	struct map_def merged12[] = {
	46	{ "kcore1", 100, 200 },
	47	{ "bpf_prog_1", 200, 300 },
	48	{ "kcore1", 300, 500 },
	49	{ "bpf_prog_2", 500, 600 },
	50	{ "kcore1", 600, 800 },
	51	{ "bpf_prog_3", 800, 900 },
	52	{ "kcore1", 900, 1000 },
	53	};
	54	struct map_def merged3[] = {
	55	{ "kcore1", 100, 200 },
	56	{ "bpf_prog_1", 200, 300 },
	57	{ "kcore1", 300, 500 },
	58	{ "bpf_prog_2", 500, 600 },
	59	{ "kcore1", 600, 800 },
	60	{ "bpf_prog_3", 800, 900 },
	61	{ "kcore1", 900, 1000 },
	62	{ "kcore3", 1000, 1100 },
	63	};
	64	struct map map_kcore1, map_kcore2, *map_kcore3;
	65	int ret;
	66
9a29ceee	67	maps__init(&maps, NULL);
4f600bcf JO	68
	69	for (i = 0; i < ARRAY_SIZE(bpf_progs); i++) {
	70	struct map *map;
	71
	72	map = dso__new_map(bpf_progs[i].name);
	73	TEST_ASSERT_VAL("failed to create map", map);
	74
	75	map->start = bpf_progs[i].start;
	76	map->end = bpf_progs[i].end;
9a29ceee	77	maps__insert(&maps, map);
4f600bcf JO	78	map__put(map);
	79	}
	80
	81	map_kcore1 = dso__new_map("kcore1");
	82	TEST_ASSERT_VAL("failed to create map", map_kcore1);
	83
	84	map_kcore2 = dso__new_map("kcore2");
	85	TEST_ASSERT_VAL("failed to create map", map_kcore2);
	86
	87	map_kcore3 = dso__new_map("kcore3");
	88	TEST_ASSERT_VAL("failed to create map", map_kcore3);
	89
	90	/* kcore1 map overlaps over all bpf maps */
	91	map_kcore1->start = 100;
	92	map_kcore1->end = 1000;
	93
	94	/* kcore2 map hides behind bpf_prog_2 */
	95	map_kcore2->start = 550;
	96	map_kcore2->end = 570;
	97
	98	/* kcore3 map hides behind bpf_prog_3, kcore1 and adds new map */
	99	map_kcore3->start = 880;
	100	map_kcore3->end = 1100;
	101
9a29ceee	102	ret = maps__merge_in(&maps, map_kcore1);
4f600bcf JO	103	TEST_ASSERT_VAL("failed to merge map", !ret);
4f600bcf JO	104
9a29ceee	105	ret = check_maps(merged12, ARRAY_SIZE(merged12), &maps);
4f600bcf JO	106	TEST_ASSERT_VAL("merge check failed", !ret);
4f600bcf JO	107
9a29ceee	108	ret = maps__merge_in(&maps, map_kcore2);
4f600bcf JO	109	TEST_ASSERT_VAL("failed to merge map", !ret);
4f600bcf JO	110
9a29ceee	111	ret = check_maps(merged12, ARRAY_SIZE(merged12), &maps);
4f600bcf JO	112	TEST_ASSERT_VAL("merge check failed", !ret);
4f600bcf JO	113
9a29ceee	114	ret = maps__merge_in(&maps, map_kcore3);
4f600bcf JO	115	TEST_ASSERT_VAL("failed to merge map", !ret);
4f600bcf JO	116
9a29ceee	117	ret = check_maps(merged3, ARRAY_SIZE(merged3), &maps);
4f600bcf JO	118	TEST_ASSERT_VAL("merge check failed", !ret);
	119	return TEST_OK;
	120	}