From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/x86_64/lib/bitstr.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 arch/x86_64/lib/bitstr.c (limited to 'arch/x86_64/lib/bitstr.c') diff --git a/arch/x86_64/lib/bitstr.c b/arch/x86_64/lib/bitstr.c new file mode 100644 index 000000000000..24676609a6ac --- /dev/null +++ b/arch/x86_64/lib/bitstr.c @@ -0,0 +1,28 @@ +#include +#include + +/* Find string of zero bits in a bitmap */ +unsigned long +find_next_zero_string(unsigned long *bitmap, long start, long nbits, int len) +{ + unsigned long n, end, i; + + again: + n = find_next_zero_bit(bitmap, nbits, start); + if (n == -1) + return -1; + + /* could test bitsliced, but it's hardly worth it */ + end = n+len; + if (end >= nbits) + return -1; + for (i = n+1; i < end; i++) { + if (test_bit(i, bitmap)) { + start = i+1; + goto again; + } + } + return n; +} + +EXPORT_SYMBOL(find_next_zero_string); -- cgit v1.2.3