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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2018-02-06 15:38:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-02-06 18:32:44 -0800
commit978f369c5c4777c32e686ecff5aaa5b677afc564 (patch)
treefae32c7bc40d529b93a4d228bdd997d132c5e228
parentee3527bd5e48e6c892abfdcb36969c1eb2fd4a6e (diff)
lib/test_bitmap.c: add bitmap_fill()/bitmap_set() test cases
Explicitly test bitmap_fill() and bitmap_set() functions. For bitmap_fill() we expect a consistent behaviour as in bitmap_zero(), i.e. the trailing bits will be set up to unsigned long boundary. Link: http://lkml.kernel.org/r/20180109172430.87452-2-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Yury Norov <ynorov@caviumnetworks.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-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 9734af711816..6889fcc0e1f4 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -134,6 +134,35 @@ static void __init test_zero_clear(void)
expect_eq_pbl("", bmap, 1024);
}
+static void __init test_fill_set(void)
+{
+ DECLARE_BITMAP(bmap, 1024);
+
+ /* Known way to clear all bits */
+ memset(bmap, 0x00, 128);
+
+ expect_eq_pbl("", bmap, 23);
+ expect_eq_pbl("", bmap, 1024);
+
+ /* single-word bitmaps */
+ bitmap_set(bmap, 0, 9);
+ expect_eq_pbl("0-8", bmap, 1024);
+
+ bitmap_fill(bmap, 35);
+ expect_eq_pbl("0-63", bmap, 1024);
+
+ /* cross boundaries operations */
+ bitmap_set(bmap, 79, 19);
+ expect_eq_pbl("0-63,79-97", bmap, 1024);
+
+ bitmap_fill(bmap, 115);
+ expect_eq_pbl("0-127", bmap, 1024);
+
+ /* Zeroing entire area */
+ bitmap_fill(bmap, 1024);
+ expect_eq_pbl("0-1023", bmap, 1024);
+}
+
static void __init test_zero_fill_copy(void)
{
DECLARE_BITMAP(bmap1, 1024);
@@ -339,6 +368,7 @@ static void noinline __init test_mem_optimisations(void)
static int __init test_bitmap_init(void)
{
test_zero_clear();
+ test_fill_set();
test_zero_fill_copy();
test_bitmap_arr32();
test_bitmap_parselist();