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| author | Petr Mladek <pmladek@suse.com> | 2021-08-30 14:56:06 +0200 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2021-08-30 14:56:06 +0200 |
| commit | 71af75b6929458d85f63c0649dc26d6f4c19729e (patch) | |
| tree | c05c57903424d8270f6b6f3ec3493791fdba4e5c /tools/lib/bitmap.c | |
| parent | fe8e3ee0d588566c1f44f28a555042ef50eba491 (diff) | |
| parent | bc17bed5fd73ef1a9aed39f3b0ea26936dad60b8 (diff) | |
Merge branch 'for-5.15-printk-index' into for-linus
Diffstat (limited to 'tools/lib/bitmap.c')
| -rw-r--r-- | tools/lib/bitmap.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/lib/bitmap.c b/tools/lib/bitmap.c index f4e914712b6f..db466ef7be9d 100644 --- a/tools/lib/bitmap.c +++ b/tools/lib/bitmap.c @@ -86,3 +86,17 @@ int __bitmap_equal(const unsigned long *bitmap1, return 1; } + +int __bitmap_intersects(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 1; + + if (bits % BITS_PER_LONG) + if ((bitmap1[k] & bitmap2[k]) & BITMAP_LAST_WORD_MASK(bits)) + return 1; + return 0; +} |