forked from Minki/linux
6df0d464db
Do some basic checks for bitmap_parselist(). [akpm@linux-foundation.org: fix printk warning] Link: http://lkml.kernel.org/r/20170807225438.16161-2-ynorov@caviumnetworks.com Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> Cc: Noam Camus <noamca@mellanox.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Matthew Wilcox <mawilcox@microsoft.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
462 lines
12 KiB
C
462 lines
12 KiB
C
/*
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* Test cases for printf facility.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/bitmap.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/printk.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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static unsigned total_tests __initdata;
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static unsigned failed_tests __initdata;
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static char pbl_buffer[PAGE_SIZE] __initdata;
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static bool __init
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__check_eq_uint(const char *srcfile, unsigned int line,
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const unsigned int exp_uint, unsigned int x)
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{
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if (exp_uint != x) {
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pr_warn("[%s:%u] expected %u, got %u\n",
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srcfile, line, exp_uint, x);
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return false;
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}
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return true;
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}
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static bool __init
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__check_eq_bitmap(const char *srcfile, unsigned int line,
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const unsigned long *exp_bmap, unsigned int exp_nbits,
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const unsigned long *bmap, unsigned int nbits)
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{
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if (exp_nbits != nbits) {
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pr_warn("[%s:%u] bitmap length mismatch: expected %u, got %u\n",
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srcfile, line, exp_nbits, nbits);
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return false;
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}
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if (!bitmap_equal(exp_bmap, bmap, nbits)) {
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pr_warn("[%s:%u] bitmaps contents differ: expected \"%*pbl\", got \"%*pbl\"\n",
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srcfile, line,
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exp_nbits, exp_bmap, nbits, bmap);
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return false;
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}
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return true;
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}
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static bool __init
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__check_eq_pbl(const char *srcfile, unsigned int line,
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const char *expected_pbl,
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const unsigned long *bitmap, unsigned int nbits)
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{
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snprintf(pbl_buffer, sizeof(pbl_buffer), "%*pbl", nbits, bitmap);
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if (strcmp(expected_pbl, pbl_buffer)) {
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pr_warn("[%s:%u] expected \"%s\", got \"%s\"\n",
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srcfile, line,
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expected_pbl, pbl_buffer);
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return false;
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}
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return true;
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}
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static bool __init
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__check_eq_u32_array(const char *srcfile, unsigned int line,
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const u32 *exp_arr, unsigned int exp_len,
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const u32 *arr, unsigned int len)
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{
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if (exp_len != len) {
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pr_warn("[%s:%u] array length differ: expected %u, got %u\n",
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srcfile, line,
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exp_len, len);
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return false;
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}
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if (memcmp(exp_arr, arr, len*sizeof(*arr))) {
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pr_warn("[%s:%u] array contents differ\n", srcfile, line);
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print_hex_dump(KERN_WARNING, " exp: ", DUMP_PREFIX_OFFSET,
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32, 4, exp_arr, exp_len*sizeof(*exp_arr), false);
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print_hex_dump(KERN_WARNING, " got: ", DUMP_PREFIX_OFFSET,
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32, 4, arr, len*sizeof(*arr), false);
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return false;
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}
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return true;
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}
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#define __expect_eq(suffix, ...) \
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({ \
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int result = 0; \
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total_tests++; \
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if (!__check_eq_ ## suffix(__FILE__, __LINE__, \
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##__VA_ARGS__)) { \
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failed_tests++; \
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result = 1; \
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} \
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result; \
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})
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#define expect_eq_uint(...) __expect_eq(uint, ##__VA_ARGS__)
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#define expect_eq_bitmap(...) __expect_eq(bitmap, ##__VA_ARGS__)
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#define expect_eq_pbl(...) __expect_eq(pbl, ##__VA_ARGS__)
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#define expect_eq_u32_array(...) __expect_eq(u32_array, ##__VA_ARGS__)
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static void __init test_zero_fill_copy(void)
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{
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DECLARE_BITMAP(bmap1, 1024);
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DECLARE_BITMAP(bmap2, 1024);
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bitmap_zero(bmap1, 1024);
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bitmap_zero(bmap2, 1024);
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/* single-word bitmaps */
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expect_eq_pbl("", bmap1, 23);
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bitmap_fill(bmap1, 19);
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expect_eq_pbl("0-18", bmap1, 1024);
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bitmap_copy(bmap2, bmap1, 23);
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expect_eq_pbl("0-18", bmap2, 1024);
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bitmap_fill(bmap2, 23);
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expect_eq_pbl("0-22", bmap2, 1024);
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bitmap_copy(bmap2, bmap1, 23);
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expect_eq_pbl("0-18", bmap2, 1024);
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bitmap_zero(bmap1, 23);
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expect_eq_pbl("", bmap1, 1024);
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/* multi-word bitmaps */
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bitmap_zero(bmap1, 1024);
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expect_eq_pbl("", bmap1, 1024);
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bitmap_fill(bmap1, 109);
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expect_eq_pbl("0-108", bmap1, 1024);
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bitmap_copy(bmap2, bmap1, 1024);
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expect_eq_pbl("0-108", bmap2, 1024);
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bitmap_fill(bmap2, 1024);
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expect_eq_pbl("0-1023", bmap2, 1024);
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bitmap_copy(bmap2, bmap1, 1024);
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expect_eq_pbl("0-108", bmap2, 1024);
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/* the following tests assume a 32- or 64-bit arch (even 128b
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* if we care)
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*/
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bitmap_fill(bmap2, 1024);
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bitmap_copy(bmap2, bmap1, 109); /* ... but 0-padded til word length */
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expect_eq_pbl("0-108,128-1023", bmap2, 1024);
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bitmap_fill(bmap2, 1024);
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bitmap_copy(bmap2, bmap1, 97); /* ... but aligned on word length */
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expect_eq_pbl("0-108,128-1023", bmap2, 1024);
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bitmap_zero(bmap2, 97); /* ... but 0-padded til word length */
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expect_eq_pbl("128-1023", bmap2, 1024);
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}
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#define PARSE_TIME 0x1
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struct test_bitmap_parselist{
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const int errno;
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const char *in;
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const unsigned long *expected;
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const int nbits;
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const int flags;
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};
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static const unsigned long exp[] = {1, 2, 0x0000ffff, 0xffff0000, 0x55555555,
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0xaaaaaaaa, 0x11111111, 0x22222222, 0xffffffff,
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0xfffffffe, 0x3333333311111111, 0xffffffff77777777};
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static const unsigned long exp2[] = {0x3333333311111111, 0xffffffff77777777};
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static const struct test_bitmap_parselist parselist_tests[] __initconst = {
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{0, "0", &exp[0], 8, 0},
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{0, "1", &exp[1], 8, 0},
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{0, "0-15", &exp[2], 32, 0},
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{0, "16-31", &exp[3], 32, 0},
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{0, "0-31:1/2", &exp[4], 32, 0},
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{0, "1-31:1/2", &exp[5], 32, 0},
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{0, "0-31:1/4", &exp[6], 32, 0},
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{0, "1-31:1/4", &exp[7], 32, 0},
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{0, "0-31:4/4", &exp[8], 32, 0},
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{0, "1-31:4/4", &exp[9], 32, 0},
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{0, "0-31:1/4,32-63:2/4", &exp[10], 64, 0},
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{0, "0-31:3/4,32-63:4/4", &exp[11], 64, 0},
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{0, "0-31:1/4,32-63:2/4,64-95:3/4,96-127:4/4", exp2, 128, 0},
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{0, "0-2047:128/256", NULL, 2048, PARSE_TIME},
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{-EINVAL, "-1", NULL, 8, 0},
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{-EINVAL, "-0", NULL, 8, 0},
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{-EINVAL, "10-1", NULL, 8, 0},
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{-EINVAL, "0-31:10/1", NULL, 8, 0},
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};
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static void __init test_bitmap_parselist(void)
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{
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int i;
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int err;
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cycles_t cycles;
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DECLARE_BITMAP(bmap, 2048);
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for (i = 0; i < ARRAY_SIZE(parselist_tests); i++) {
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#define ptest parselist_tests[i]
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cycles = get_cycles();
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err = bitmap_parselist(ptest.in, bmap, ptest.nbits);
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cycles = get_cycles() - cycles;
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if (err != ptest.errno) {
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pr_err("test %d: input is %s, errno is %d, expected %d\n",
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i, ptest.in, err, ptest.errno);
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continue;
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}
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if (!err && ptest.expected
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&& !__bitmap_equal(bmap, ptest.expected, ptest.nbits)) {
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pr_err("test %d: input is %s, result is 0x%lx, expected 0x%lx\n",
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i, ptest.in, bmap[0], *ptest.expected);
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continue;
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}
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if (ptest.flags & PARSE_TIME)
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pr_err("test %d: input is '%s' OK, Time: %llu\n",
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i, ptest.in,
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(unsigned long long)cycles);
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}
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}
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static void __init test_bitmap_u32_array_conversions(void)
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{
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DECLARE_BITMAP(bmap1, 1024);
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DECLARE_BITMAP(bmap2, 1024);
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u32 exp_arr[32], arr[32];
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unsigned nbits;
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for (nbits = 0 ; nbits < 257 ; ++nbits) {
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const unsigned int used_u32s = DIV_ROUND_UP(nbits, 32);
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unsigned int i, rv;
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bitmap_zero(bmap1, nbits);
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bitmap_set(bmap1, nbits, 1024 - nbits); /* garbage */
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memset(arr, 0xff, sizeof(arr));
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rv = bitmap_to_u32array(arr, used_u32s, bmap1, nbits);
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expect_eq_uint(nbits, rv);
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memset(exp_arr, 0xff, sizeof(exp_arr));
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memset(exp_arr, 0, used_u32s*sizeof(*exp_arr));
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expect_eq_u32_array(exp_arr, 32, arr, 32);
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bitmap_fill(bmap2, 1024);
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rv = bitmap_from_u32array(bmap2, nbits, arr, used_u32s);
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expect_eq_uint(nbits, rv);
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expect_eq_bitmap(bmap1, 1024, bmap2, 1024);
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for (i = 0 ; i < nbits ; ++i) {
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/*
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* test conversion bitmap -> u32[]
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*/
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bitmap_zero(bmap1, 1024);
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__set_bit(i, bmap1);
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bitmap_set(bmap1, nbits, 1024 - nbits); /* garbage */
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memset(arr, 0xff, sizeof(arr));
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rv = bitmap_to_u32array(arr, used_u32s, bmap1, nbits);
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expect_eq_uint(nbits, rv);
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/* 1st used u32 words contain expected bit set, the
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* remaining words are left unchanged (0xff)
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*/
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memset(exp_arr, 0xff, sizeof(exp_arr));
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memset(exp_arr, 0, used_u32s*sizeof(*exp_arr));
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exp_arr[i/32] = (1U<<(i%32));
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expect_eq_u32_array(exp_arr, 32, arr, 32);
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/* same, with longer array to fill
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*/
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memset(arr, 0xff, sizeof(arr));
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rv = bitmap_to_u32array(arr, 32, bmap1, nbits);
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expect_eq_uint(nbits, rv);
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/* 1st used u32 words contain expected bit set, the
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* remaining words are all 0s
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*/
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memset(exp_arr, 0, sizeof(exp_arr));
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exp_arr[i/32] = (1U<<(i%32));
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expect_eq_u32_array(exp_arr, 32, arr, 32);
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/*
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* test conversion u32[] -> bitmap
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*/
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/* the 1st nbits of bmap2 are identical to
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* bmap1, the remaining bits of bmap2 are left
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* unchanged (all 1s)
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*/
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bitmap_fill(bmap2, 1024);
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rv = bitmap_from_u32array(bmap2, nbits,
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exp_arr, used_u32s);
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expect_eq_uint(nbits, rv);
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expect_eq_bitmap(bmap1, 1024, bmap2, 1024);
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/* same, with more bits to fill
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*/
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memset(arr, 0xff, sizeof(arr)); /* garbage */
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memset(arr, 0, used_u32s*sizeof(u32));
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arr[i/32] = (1U<<(i%32));
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bitmap_fill(bmap2, 1024);
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rv = bitmap_from_u32array(bmap2, 1024, arr, used_u32s);
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expect_eq_uint(used_u32s*32, rv);
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/* the 1st nbits of bmap2 are identical to
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* bmap1, the remaining bits of bmap2 are cleared
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*/
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bitmap_zero(bmap1, 1024);
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__set_bit(i, bmap1);
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expect_eq_bitmap(bmap1, 1024, bmap2, 1024);
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/*
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* test short conversion bitmap -> u32[] (1
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* word too short)
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*/
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if (used_u32s > 1) {
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bitmap_zero(bmap1, 1024);
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__set_bit(i, bmap1);
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bitmap_set(bmap1, nbits,
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1024 - nbits); /* garbage */
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memset(arr, 0xff, sizeof(arr));
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rv = bitmap_to_u32array(arr, used_u32s - 1,
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bmap1, nbits);
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expect_eq_uint((used_u32s - 1)*32, rv);
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/* 1st used u32 words contain expected
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* bit set, the remaining words are
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* left unchanged (0xff)
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*/
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memset(exp_arr, 0xff, sizeof(exp_arr));
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memset(exp_arr, 0,
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(used_u32s-1)*sizeof(*exp_arr));
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if ((i/32) < (used_u32s - 1))
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exp_arr[i/32] = (1U<<(i%32));
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expect_eq_u32_array(exp_arr, 32, arr, 32);
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}
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/*
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* test short conversion u32[] -> bitmap (3
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* bits too short)
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*/
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if (nbits > 3) {
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memset(arr, 0xff, sizeof(arr)); /* garbage */
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memset(arr, 0, used_u32s*sizeof(*arr));
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arr[i/32] = (1U<<(i%32));
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bitmap_zero(bmap1, 1024);
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rv = bitmap_from_u32array(bmap1, nbits - 3,
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arr, used_u32s);
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expect_eq_uint(nbits - 3, rv);
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/* we are expecting the bit < nbits -
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* 3 (none otherwise), and the rest of
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* bmap1 unchanged (0-filled)
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*/
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bitmap_zero(bmap2, 1024);
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if (i < nbits - 3)
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__set_bit(i, bmap2);
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expect_eq_bitmap(bmap2, 1024, bmap1, 1024);
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/* do the same with bmap1 initially
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* 1-filled
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*/
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bitmap_fill(bmap1, 1024);
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rv = bitmap_from_u32array(bmap1, nbits - 3,
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arr, used_u32s);
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expect_eq_uint(nbits - 3, rv);
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/* we are expecting the bit < nbits -
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* 3 (none otherwise), and the rest of
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* bmap1 unchanged (1-filled)
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*/
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bitmap_zero(bmap2, 1024);
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if (i < nbits - 3)
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__set_bit(i, bmap2);
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bitmap_set(bmap2, nbits-3, 1024 - nbits + 3);
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expect_eq_bitmap(bmap2, 1024, bmap1, 1024);
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}
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}
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}
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}
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static void noinline __init test_mem_optimisations(void)
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{
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DECLARE_BITMAP(bmap1, 1024);
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DECLARE_BITMAP(bmap2, 1024);
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unsigned int start, nbits;
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for (start = 0; start < 1024; start += 8) {
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memset(bmap1, 0x5a, sizeof(bmap1));
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memset(bmap2, 0x5a, sizeof(bmap2));
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for (nbits = 0; nbits < 1024 - start; nbits += 8) {
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bitmap_set(bmap1, start, nbits);
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__bitmap_set(bmap2, start, nbits);
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if (!bitmap_equal(bmap1, bmap2, 1024))
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printk("set not equal %d %d\n", start, nbits);
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if (!__bitmap_equal(bmap1, bmap2, 1024))
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printk("set not __equal %d %d\n", start, nbits);
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bitmap_clear(bmap1, start, nbits);
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__bitmap_clear(bmap2, start, nbits);
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if (!bitmap_equal(bmap1, bmap2, 1024))
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printk("clear not equal %d %d\n", start, nbits);
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if (!__bitmap_equal(bmap1, bmap2, 1024))
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printk("clear not __equal %d %d\n", start,
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nbits);
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}
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}
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}
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static int __init test_bitmap_init(void)
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{
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test_zero_fill_copy();
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test_bitmap_u32_array_conversions();
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test_bitmap_parselist();
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test_mem_optimisations();
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if (failed_tests == 0)
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pr_info("all %u tests passed\n", total_tests);
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else
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pr_warn("failed %u out of %u tests\n",
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failed_tests, total_tests);
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return failed_tests ? -EINVAL : 0;
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}
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static void __exit test_bitmap_cleanup(void)
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{
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}
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module_init(test_bitmap_init);
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module_exit(test_bitmap_cleanup);
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MODULE_AUTHOR("david decotigny <david.decotigny@googlers.com>");
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MODULE_LICENSE("GPL");
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