diff options
Diffstat (limited to 'drivers/net/mlx4/alloc.c')
| -rw-r--r-- | drivers/net/mlx4/alloc.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/mlx4/alloc.c b/drivers/net/mlx4/alloc.c index 3a4277f6fac..116cae334da 100644 --- a/drivers/net/mlx4/alloc.c +++ b/drivers/net/mlx4/alloc.c @@ -62,6 +62,9 @@ u32 mlx4_bitmap_alloc(struct mlx4_bitmap *bitmap) } else obj = -1; + if (obj != -1) + --bitmap->avail; + spin_unlock(&bitmap->lock); return obj; @@ -101,11 +104,19 @@ u32 mlx4_bitmap_alloc_range(struct mlx4_bitmap *bitmap, int cnt, int align) } else obj = -1; + if (obj != -1) + bitmap->avail -= cnt; + spin_unlock(&bitmap->lock); return obj; } +u32 mlx4_bitmap_avail(struct mlx4_bitmap *bitmap) +{ + return bitmap->avail; +} + void mlx4_bitmap_free_range(struct mlx4_bitmap *bitmap, u32 obj, int cnt) { obj &= bitmap->max + bitmap->reserved_top - 1; @@ -115,6 +126,7 @@ void mlx4_bitmap_free_range(struct mlx4_bitmap *bitmap, u32 obj, int cnt) bitmap->last = min(bitmap->last, obj); bitmap->top = (bitmap->top + bitmap->max + bitmap->reserved_top) & bitmap->mask; + bitmap->avail += cnt; spin_unlock(&bitmap->lock); } @@ -130,6 +142,7 @@ int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask, bitmap->max = num - reserved_top; bitmap->mask = mask; bitmap->reserved_top = reserved_top; + bitmap->avail = num - reserved_top - reserved_bot; spin_lock_init(&bitmap->lock); bitmap->table = kzalloc(BITS_TO_LONGS(bitmap->max) * sizeof (long), GFP_KERNEL); |