diff options
| author | Flavio Cruz <flaviocruz@gmail.com> | 2022-12-14 02:35:47 -0500 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2022-12-15 17:12:33 +0100 |
| commit | ad51c68171cb6a1cae15c61ca0218bbee2c05485 (patch) | |
| tree | ab451409f5b33389f86cc039a14ff640aa1fefe7 /vm | |
| parent | 3c26c30fd2a5bdec081384d45e42a7ea4e424846 (diff) | |
Use __builtin_ffs instead of libc provided ffs in vm_map.c
We already use this built-in in other places and this will move us closer to
being able to build the kernel without libc.
Message-Id: <Y5l80/VUFvJYZTjy@jupiter.tail36e24.ts.net>
Diffstat (limited to 'vm')
| -rw-r--r-- | vm/vm_map.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/vm/vm_map.c b/vm/vm_map.c index ceeb91ee..4200a239 100644 --- a/vm/vm_map.c +++ b/vm/vm_map.c @@ -685,10 +685,10 @@ vm_map_find_entry_anywhere(struct vm_map *map, if (((mask + 1) & mask) != 0) { /* We have high bits in addition to the low bits */ - int first0 = ffs(~mask); /* First zero after low bits */ + int first0 = __builtin_ffs(~mask); /* First zero after low bits */ vm_offset_t lowmask = (1UL << (first0-1)) - 1; /* low bits */ vm_offset_t himask = mask - lowmask; /* high bits */ - int second1 = ffs(himask); /* First one after low bits */ + int second1 = __builtin_ffs(himask); /* First one after low bits */ max = 1UL << (second1-1); |