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-rw-r--r--lib/test_bitmap.c206
1 files changed, 31 insertions, 175 deletions
diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index aa1f2669bdd5..de7ef2996a07 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -23,7 +23,7 @@ __check_eq_uint(const char *srcfile, unsigned int line,
const unsigned int exp_uint, unsigned int x)
{
if (exp_uint != x) {
- pr_warn("[%s:%u] expected %u, got %u\n",
+ pr_err("[%s:%u] expected %u, got %u\n",
srcfile, line, exp_uint, x);
return false;
}
@@ -33,19 +33,13 @@ __check_eq_uint(const char *srcfile, unsigned int line,
static bool __init
__check_eq_bitmap(const char *srcfile, unsigned int line,
- const unsigned long *exp_bmap, unsigned int exp_nbits,
- const unsigned long *bmap, unsigned int nbits)
+ const unsigned long *exp_bmap, const unsigned long *bmap,
+ unsigned int nbits)
{
- if (exp_nbits != nbits) {
- pr_warn("[%s:%u] bitmap length mismatch: expected %u, got %u\n",
- srcfile, line, exp_nbits, nbits);
- return false;
- }
-
if (!bitmap_equal(exp_bmap, bmap, nbits)) {
pr_warn("[%s:%u] bitmaps contents differ: expected \"%*pbl\", got \"%*pbl\"\n",
srcfile, line,
- exp_nbits, exp_bmap, nbits, bmap);
+ nbits, exp_bmap, nbits, bmap);
return false;
}
return true;
@@ -69,6 +63,10 @@ __check_eq_pbl(const char *srcfile, unsigned int line,
static bool __init
__check_eq_u32_array(const char *srcfile, unsigned int line,
const u32 *exp_arr, unsigned int exp_len,
+ const u32 *arr, unsigned int len) __used;
+static bool __init
+__check_eq_u32_array(const char *srcfile, unsigned int line,
+ const u32 *exp_arr, unsigned int exp_len,
const u32 *arr, unsigned int len)
{
if (exp_len != len) {
@@ -255,171 +253,29 @@ static void __init test_bitmap_parselist(void)
}
}
-static void __init test_bitmap_u32_array_conversions(void)
+static void __init test_bitmap_arr32(void)
{
- DECLARE_BITMAP(bmap1, 1024);
- DECLARE_BITMAP(bmap2, 1024);
- u32 exp_arr[32], arr[32];
- unsigned nbits;
-
- for (nbits = 0 ; nbits < 257 ; ++nbits) {
- const unsigned int used_u32s = DIV_ROUND_UP(nbits, 32);
- unsigned int i, rv;
-
- bitmap_zero(bmap1, nbits);
- bitmap_set(bmap1, nbits, 1024 - nbits); /* garbage */
-
- memset(arr, 0xff, sizeof(arr));
- rv = bitmap_to_u32array(arr, used_u32s, bmap1, nbits);
- expect_eq_uint(nbits, rv);
-
- memset(exp_arr, 0xff, sizeof(exp_arr));
- memset(exp_arr, 0, used_u32s*sizeof(*exp_arr));
- expect_eq_u32_array(exp_arr, 32, arr, 32);
-
- bitmap_fill(bmap2, 1024);
- rv = bitmap_from_u32array(bmap2, nbits, arr, used_u32s);
- expect_eq_uint(nbits, rv);
- expect_eq_bitmap(bmap1, 1024, bmap2, 1024);
-
- for (i = 0 ; i < nbits ; ++i) {
- /*
- * test conversion bitmap -> u32[]
- */
-
- bitmap_zero(bmap1, 1024);
- __set_bit(i, bmap1);
- bitmap_set(bmap1, nbits, 1024 - nbits); /* garbage */
-
- memset(arr, 0xff, sizeof(arr));
- rv = bitmap_to_u32array(arr, used_u32s, bmap1, nbits);
- expect_eq_uint(nbits, rv);
-
- /* 1st used u32 words contain expected bit set, the
- * remaining words are left unchanged (0xff)
- */
- memset(exp_arr, 0xff, sizeof(exp_arr));
- memset(exp_arr, 0, used_u32s*sizeof(*exp_arr));
- exp_arr[i/32] = (1U<<(i%32));
- expect_eq_u32_array(exp_arr, 32, arr, 32);
-
-
- /* same, with longer array to fill
- */
- memset(arr, 0xff, sizeof(arr));
- rv = bitmap_to_u32array(arr, 32, bmap1, nbits);
- expect_eq_uint(nbits, rv);
-
- /* 1st used u32 words contain expected bit set, the
- * remaining words are all 0s
- */
- memset(exp_arr, 0, sizeof(exp_arr));
- exp_arr[i/32] = (1U<<(i%32));
- expect_eq_u32_array(exp_arr, 32, arr, 32);
-
- /*
- * test conversion u32[] -> bitmap
- */
-
- /* the 1st nbits of bmap2 are identical to
- * bmap1, the remaining bits of bmap2 are left
- * unchanged (all 1s)
- */
- bitmap_fill(bmap2, 1024);
- rv = bitmap_from_u32array(bmap2, nbits,
- exp_arr, used_u32s);
- expect_eq_uint(nbits, rv);
-
- expect_eq_bitmap(bmap1, 1024, bmap2, 1024);
-
- /* same, with more bits to fill
- */
- memset(arr, 0xff, sizeof(arr)); /* garbage */
- memset(arr, 0, used_u32s*sizeof(u32));
- arr[i/32] = (1U<<(i%32));
-
- bitmap_fill(bmap2, 1024);
- rv = bitmap_from_u32array(bmap2, 1024, arr, used_u32s);
- expect_eq_uint(used_u32s*32, rv);
-
- /* the 1st nbits of bmap2 are identical to
- * bmap1, the remaining bits of bmap2 are cleared
- */
- bitmap_zero(bmap1, 1024);
- __set_bit(i, bmap1);
- expect_eq_bitmap(bmap1, 1024, bmap2, 1024);
-
-
- /*
- * test short conversion bitmap -> u32[] (1
- * word too short)
- */
- if (used_u32s > 1) {
- bitmap_zero(bmap1, 1024);
- __set_bit(i, bmap1);
- bitmap_set(bmap1, nbits,
- 1024 - nbits); /* garbage */
- memset(arr, 0xff, sizeof(arr));
-
- rv = bitmap_to_u32array(arr, used_u32s - 1,
- bmap1, nbits);
- expect_eq_uint((used_u32s - 1)*32, rv);
-
- /* 1st used u32 words contain expected
- * bit set, the remaining words are
- * left unchanged (0xff)
- */
- memset(exp_arr, 0xff, sizeof(exp_arr));
- memset(exp_arr, 0,
- (used_u32s-1)*sizeof(*exp_arr));
- if ((i/32) < (used_u32s - 1))
- exp_arr[i/32] = (1U<<(i%32));
- expect_eq_u32_array(exp_arr, 32, arr, 32);
- }
-
- /*
- * test short conversion u32[] -> bitmap (3
- * bits too short)
- */
- if (nbits > 3) {
- memset(arr, 0xff, sizeof(arr)); /* garbage */
- memset(arr, 0, used_u32s*sizeof(*arr));
- arr[i/32] = (1U<<(i%32));
-
- bitmap_zero(bmap1, 1024);
- rv = bitmap_from_u32array(bmap1, nbits - 3,
- arr, used_u32s);
- expect_eq_uint(nbits - 3, rv);
-
- /* we are expecting the bit < nbits -
- * 3 (none otherwise), and the rest of
- * bmap1 unchanged (0-filled)
- */
- bitmap_zero(bmap2, 1024);
- if (i < nbits - 3)
- __set_bit(i, bmap2);
- expect_eq_bitmap(bmap2, 1024, bmap1, 1024);
-
- /* do the same with bmap1 initially
- * 1-filled
- */
-
- bitmap_fill(bmap1, 1024);
- rv = bitmap_from_u32array(bmap1, nbits - 3,
- arr, used_u32s);
- expect_eq_uint(nbits - 3, rv);
-
- /* we are expecting the bit < nbits -
- * 3 (none otherwise), and the rest of
- * bmap1 unchanged (1-filled)
- */
- bitmap_zero(bmap2, 1024);
- if (i < nbits - 3)
- __set_bit(i, bmap2);
- bitmap_set(bmap2, nbits-3, 1024 - nbits + 3);
- expect_eq_bitmap(bmap2, 1024, bmap1, 1024);
- }
- }
+ unsigned int nbits, next_bit, len = sizeof(exp) * 8;
+ u32 arr[sizeof(exp) / 4];
+ DECLARE_BITMAP(bmap2, len);
+
+ memset(arr, 0xa5, sizeof(arr));
+
+ for (nbits = 0; nbits < len; ++nbits) {
+ bitmap_to_arr32(arr, exp, nbits);
+ bitmap_from_arr32(bmap2, arr, nbits);
+ expect_eq_bitmap(bmap2, exp, nbits);
+
+ next_bit = find_next_bit(bmap2,
+ round_up(nbits, BITS_PER_LONG), nbits);
+ if (next_bit < round_up(nbits, BITS_PER_LONG))
+ pr_err("bitmap_copy_arr32(nbits == %d:"
+ " tail is not safely cleared: %d\n",
+ nbits, next_bit);
+
+ if (nbits < len - 32)
+ expect_eq_uint(arr[DIV_ROUND_UP(nbits, 32)],
+ 0xa5a5a5a5);
}
}
@@ -454,7 +310,7 @@ static void noinline __init test_mem_optimisations(void)
static int __init test_bitmap_init(void)
{
test_zero_fill_copy();
- test_bitmap_u32_array_conversions();
+ test_bitmap_arr32();
test_bitmap_parselist();
test_mem_optimisations();
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-02 07:51:04 +0000