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test/bitmap: test scan after half cacheline is cleared

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Add a test case to test scan operation post clear of half
cacheline of slabs.

Also fix meson.build to include test_bitmap.c in the compilation.

Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
This commit is contained in:
Nithin Dabilpuram 2021-01-05 14:27:28 +05:30 committed by Thomas Monjalon
parent a2a23a794b
commit 5e9647fd5a
2 changed files with 34 additions and 1 deletions

1
app/test/meson.build

@ -13,6 +13,7 @@ test_sources = files('commands.c',
'test_atomic.c',
'test_barrier.c',
'test_bitops.c',
'test_bitmap.c',
'test_bpf.c',
'test_byteorder.c',
'test_cmdline.c',

34
app/test/test_bitmap.c

@ -16,9 +16,10 @@
static int
test_bitmap_scan_operations(struct rte_bitmap *bmp)
{
uint32_t pos = 0;
uint64_t slab1_magic = 0xBADC0FFEEBADF00D;
uint64_t slab2_magic = 0xFEEDDEADDEADF00D;
uint32_t pos = 0, start_pos;
int i, nb_clear, nb_set;
uint64_t out_slab = 0;
rte_bitmap_reset(bmp);
@ -70,6 +71,37 @@ test_bitmap_scan_operations(struct rte_bitmap *bmp)
return TEST_FAILED;
}
/* Test scan when a cline is half full */
rte_bitmap_reset(bmp);
for (i = 0; i < MAX_BITS; i++)
rte_bitmap_set(bmp, i);
nb_clear = RTE_MIN(RTE_BITMAP_CL_BIT_SIZE / 2, MAX_BITS);
for (i = 0; i < nb_clear; i++)
rte_bitmap_clear(bmp, i);
/* Find remaining bits set in bmp */
__rte_bitmap_scan_init(bmp);
if (rte_bitmap_scan(bmp, &pos, &out_slab) != 1) {
printf("Initial scan failed with half CL empty.\n");
return TEST_FAILED;
}
start_pos = pos;
nb_set = 0;
do {
nb_set += __builtin_popcountll(out_slab);
if (!rte_bitmap_scan(bmp, &pos, &out_slab))
break;
} while (pos != start_pos);
if ((nb_clear + nb_set) != MAX_BITS) {
printf("Scan failed to find all set bits. "
"Expected %u, found %u.\n", MAX_BITS - nb_clear, nb_set);
return TEST_FAILED;
}
return TEST_SUCCESS;
}