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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>
This commit is contained in:
Andy Shevchenko 2018-02-06 15:38:13 -08:00 committed by Linus Torvalds
parent ee3527bd5e
commit 978f369c5c
1 changed files with 30 additions and 0 deletions
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30
lib/test_bitmap.c
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@ -134,6 +134,35 @@ static void __init test_zero_clear(void)
expect_eq_pbl("", bmap, 1024); 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) static void __init test_zero_fill_copy(void)
{ {
DECLARE_BITMAP(bmap1, 1024); DECLARE_BITMAP(bmap1, 1024);
@ -339,6 +368,7 @@ static void noinline __init test_mem_optimisations(void)
static int __init test_bitmap_init(void) static int __init test_bitmap_init(void)
{ {
test_zero_clear(); test_zero_clear();
test_fill_set();
test_zero_fill_copy(); test_zero_fill_copy();
test_bitmap_arr32(); test_bitmap_arr32();
test_bitmap_parselist(); test_bitmap_parselist();