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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2018-02-06 15:38:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-06 18:32:44 -0800 |
| commit | 978f369c5c4777c32e686ecff5aaa5b677afc564 (patch) | |
| tree | fae32c7bc40d529b93a4d228bdd997d132c5e228 /lib | |
| parent | ee3527bd5e48e6c892abfdcb36969c1eb2fd4a6e (diff) | |
| download | lwn-978f369c5c4777c32e686ecff5aaa5b677afc564.tar.gz lwn-978f369c5c4777c32e686ecff5aaa5b677afc564.zip | |
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>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/test_bitmap.c | 30 |
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(); |