cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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bitmap.c (1471B)


      1// SPDX-License-Identifier: GPL-2.0
      2#include <linux/compiler.h>
      3#include <linux/bitmap.h>
      4#include <perf/cpumap.h>
      5#include <internal/cpumap.h>
      6#include "tests.h"
      7#include "debug.h"
      8
      9#define NBITS 100
     10
     11static unsigned long *get_bitmap(const char *str, int nbits)
     12{
     13	struct perf_cpu_map *map = perf_cpu_map__new(str);
     14	unsigned long *bm = NULL;
     15	int i;
     16
     17	bm = bitmap_zalloc(nbits);
     18
     19	if (map && bm) {
     20		for (i = 0; i < perf_cpu_map__nr(map); i++)
     21			set_bit(perf_cpu_map__cpu(map, i).cpu, bm);
     22	}
     23
     24	if (map)
     25		perf_cpu_map__put(map);
     26	return bm;
     27}
     28
     29static int test_bitmap(const char *str)
     30{
     31	unsigned long *bm = get_bitmap(str, NBITS);
     32	char buf[100];
     33	int ret;
     34
     35	bitmap_scnprintf(bm, NBITS, buf, sizeof(buf));
     36	pr_debug("bitmap: %s\n", buf);
     37
     38	ret = !strcmp(buf, str);
     39	free(bm);
     40	return ret;
     41}
     42
     43static int test__bitmap_print(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
     44{
     45	TEST_ASSERT_VAL("failed to convert map", test_bitmap("1"));
     46	TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,5"));
     47	TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3,5,7,9,11,13,15,17,19,21-40"));
     48	TEST_ASSERT_VAL("failed to convert map", test_bitmap("2-5"));
     49	TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3-6,8-10,24,35-37"));
     50	TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3-6,8-10,24,35-37"));
     51	TEST_ASSERT_VAL("failed to convert map", test_bitmap("1-10,12-20,22-30,32-40"));
     52	return 0;
     53}
     54
     55DEFINE_SUITE("Print bitmap", bitmap_print);