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| author |   Maxime Ripard <maxime@cerno.tech> | 2020-02-17 10:34:34 +0100 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2020-02-17 10:34:34 +0100 |
| commit | 28f2aff1caa4997f58ca31179cad1b4a84a62827 (patch) | |
| tree | 69fb4b0a752f3660ce022a4313f8c7b276bbcceb /tools/lib/bitmap.c | |
| parent | dma-buf: Fix a typo in Kconfig (diff) | |
| parent | Linux 5.6-rc2 (diff) | |
| download | wireguard-linux-28f2aff1caa4997f58ca31179cad1b4a84a62827.tar.xz wireguard-linux-28f2aff1caa4997f58ca31179cad1b4a84a62827.zip | |
Merge v5.6-rc2 into drm-misc-next
Lyude needs some patches in 5.6-rc2 and we didn't bring drm-misc-next
forward yet, so it looks like a good occasion.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'tools/lib/bitmap.c')
| -rw-r--r-- | tools/lib/bitmap.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/lib/bitmap.c b/tools/lib/bitmap.c index 38494782be06..5043747ef6c5 100644 --- a/tools/lib/bitmap.c +++ b/tools/lib/bitmap.c @@ -71,3 +71,18 @@ int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1, BITMAP_LAST_WORD_MASK(bits)); return result != 0; } + +int __bitmap_equal(const unsigned long *bitmap1, + const unsigned long *bitmap2, unsigned int bits) +{ + unsigned int k, lim = bits/BITS_PER_LONG; + for (k = 0; k < lim; ++k) + if (bitmap1[k] != bitmap2[k]) + return 0; + + if (bits % BITS_PER_LONG) + if ((bitmap1[k] ^ bitmap2[k]) & BITMAP_LAST_WORD_MASK(bits)) + return 0; + + return 1; +} |