diff options
| author | Lucas De Marchi <lucas.demarchi@intel.com> | 2024-08-16 10:05:54 -0700 |
|---|---|---|
| committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2024-08-16 10:33:54 -0700 |
| commit | ed7171ff9fabc49ae6ed42fbd082a576473836fc (patch) | |
| tree | 62bc21b9b590a7fefb27b6103a121f4386e1815f /tools/lib/bitmap.c | |
| parent | db3461a7743817ad7c73553902231b096616813a (diff) | |
| parent | a809b92ee0f84c3f655b16a8b4d04bc3665d954a (diff) | |
Merge drm/drm-next into drm-xe-next
Get drm-xe-next on v6.11-rc2 and synchronized with drm-intel-next for
the display side. This resolves the current conflict for the
enable_display module parameter and allows further pending refactors.
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Diffstat (limited to 'tools/lib/bitmap.c')
| -rw-r--r-- | tools/lib/bitmap.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/lib/bitmap.c b/tools/lib/bitmap.c index c3e4871967bc..2178862bb114 100644 --- a/tools/lib/bitmap.c +++ b/tools/lib/bitmap.c @@ -100,3 +100,23 @@ bool __bitmap_intersects(const unsigned long *bitmap1, return true; return false; } + +void __bitmap_clear(unsigned long *map, unsigned int start, int len) +{ + unsigned long *p = map + BIT_WORD(start); + const unsigned int size = start + len; + int bits_to_clear = BITS_PER_LONG - (start % BITS_PER_LONG); + unsigned long mask_to_clear = BITMAP_FIRST_WORD_MASK(start); + + while (len - bits_to_clear >= 0) { + *p &= ~mask_to_clear; + len -= bits_to_clear; + bits_to_clear = BITS_PER_LONG; + mask_to_clear = ~0UL; + p++; + } + if (len) { + mask_to_clear &= BITMAP_LAST_WORD_MASK(size); + *p &= ~mask_to_clear; + } +} |
