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Commit 978f369c authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Linus Torvalds
Browse files

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: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: default avatarYury Norov <ynorov@caviumnetworks.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ee3527bd

lib/test_bitmap.c

+30 −0
Original line number Diff line number Diff line
@@ -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();