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authorYury Norov <yury.norov@gmail.com>2021-08-15 00:17:12 +0300
committerYury Norov <yury.norov@gmail.com>2022-01-15 19:47:31 +0300
commitdb7313005e9c2d4e80888dd18d4a83926b920e8c (patch)
tree74aaf109b45c7a92b7680cda27ae46a1d7cb450f /lib
parentec288a2cf7ca40a939316b6df206ab845bb112d1 (diff)
downloadlinux-db7313005e9c2d4e80888dd18d4a83926b920e8c.tar.xz
lib: bitmap: add performance test for bitmap_print_to_pagebuf
Functional tests for bitmap_print_to_pagebuf() are provided in lib/test_printf.c. This patch adds performance test for a case of fully set bitmap. Signed-off-by: Yury Norov <yury.norov@gmail.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Diffstat (limited to 'lib')
-rw-r--r--lib/test_bitmap.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index d33fa5a61b95..0c82f07f74fc 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -446,6 +446,42 @@ static void __init test_bitmap_parselist(void)
}
}
+static void __init test_bitmap_printlist(void)
+{
+ unsigned long *bmap = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ char expected[256];
+ int ret, slen;
+ ktime_t time;
+
+ if (!buf || !bmap)
+ goto out;
+
+ memset(bmap, -1, PAGE_SIZE);
+ slen = snprintf(expected, 256, "0-%ld", PAGE_SIZE * 8 - 1);
+ if (slen < 0)
+ goto out;
+
+ time = ktime_get();
+ ret = bitmap_print_to_pagebuf(true, buf, bmap, PAGE_SIZE * 8);
+ time = ktime_get() - time;
+
+ if (ret != slen + 1) {
+ pr_err("bitmap_print_to_pagebuf: result is %d, expected %d\n", ret, slen);
+ goto out;
+ }
+
+ if (strncmp(buf, expected, slen)) {
+ pr_err("bitmap_print_to_pagebuf: result is %s, expected %s\n", buf, expected);
+ goto out;
+ }
+
+ pr_err("bitmap_print_to_pagebuf: input is '%s', Time: %llu\n", buf, time);
+out:
+ kfree(buf);
+ kfree(bmap);
+}
+
static const unsigned long parse_test[] __initconst = {
BITMAP_FROM_U64(0),
BITMAP_FROM_U64(1),
@@ -818,6 +854,7 @@ static void __init selftest(void)
test_bitmap_arr32();
test_bitmap_parse();
test_bitmap_parselist();
+ test_bitmap_printlist();
test_mem_optimisations();
test_for_each_set_clump8();
test_bitmap_cut();