summaryrefslogtreecommitdiffstats
path: root/lib/test_bitmap.c
diff options
context:
space:
mode:
authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2018-02-06 15:38:10 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-02-06 18:32:44 -0800
commitee3527bd5e48e6c892abfdcb36969c1eb2fd4a6e (patch)
treecf77fc12d2ee68da5b89e0af9d6423e0a7d42cb2 /lib/test_bitmap.c
parent3aa56885e51683a19c8aa71739fd279b3f501cd7 (diff)
downloadlinux-stable-ee3527bd5e48e6c892abfdcb36969c1eb2fd4a6e.tar.gz
linux-stable-ee3527bd5e48e6c892abfdcb36969c1eb2fd4a6e.tar.bz2
linux-stable-ee3527bd5e48e6c892abfdcb36969c1eb2fd4a6e.zip
lib/test_bitmap.c: add bitmap_zero()/bitmap_clear() test cases
Explicitly test bitmap_zero() and bitmap_clear() functions. Link: http://lkml.kernel.org/r/20180109172430.87452-1-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Yury Norov <ynorov@caviumnetworks.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/test_bitmap.c')
-rw-r--r--lib/test_bitmap.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index de7ef2996a07..9734af711816 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -105,6 +105,35 @@ __check_eq_u32_array(const char *srcfile, unsigned int line,
#define expect_eq_pbl(...) __expect_eq(pbl, ##__VA_ARGS__)
#define expect_eq_u32_array(...) __expect_eq(u32_array, ##__VA_ARGS__)
+static void __init test_zero_clear(void)
+{
+ DECLARE_BITMAP(bmap, 1024);
+
+ /* Known way to set all bits */
+ memset(bmap, 0xff, 128);
+
+ expect_eq_pbl("0-22", bmap, 23);
+ expect_eq_pbl("0-1023", bmap, 1024);
+
+ /* single-word bitmaps */
+ bitmap_clear(bmap, 0, 9);
+ expect_eq_pbl("9-1023", bmap, 1024);
+
+ bitmap_zero(bmap, 35);
+ expect_eq_pbl("64-1023", bmap, 1024);
+
+ /* cross boundaries operations */
+ bitmap_clear(bmap, 79, 19);
+ expect_eq_pbl("64-78,98-1023", bmap, 1024);
+
+ bitmap_zero(bmap, 115);
+ expect_eq_pbl("128-1023", bmap, 1024);
+
+ /* Zeroing entire area */
+ bitmap_zero(bmap, 1024);
+ expect_eq_pbl("", bmap, 1024);
+}
+
static void __init test_zero_fill_copy(void)
{
DECLARE_BITMAP(bmap1, 1024);
@@ -309,6 +338,7 @@ static void noinline __init test_mem_optimisations(void)
static int __init test_bitmap_init(void)
{
+ test_zero_clear();
test_zero_fill_copy();
test_bitmap_arr32();
test_bitmap_parselist();