From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yevgeny Petrilin Subject: [PATCH 02/25] mlx4_core: add support for arbitrary bitmap sizes Date: Wed, 04 Nov 2009 17:30:21 +0200 Message-ID: <4AF19E0D.1030504@mellanox.co.il> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, liranl-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org, tziporet-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org, yevgenyp-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org To: rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org Return-path: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org Signed-off-by: Liran Liss --- drivers/net/mlx4/alloc.c | 10 ++++++++++ drivers/net/mlx4/mlx4.h | 2 ++ 2 files changed, 12 insertions(+), 0 deletions(-) diff --git a/drivers/net/mlx4/alloc.c b/drivers/net/mlx4/alloc.c index ad95d5f..bc68cc3 100644 --- a/drivers/net/mlx4/alloc.c +++ b/drivers/net/mlx4/alloc.c @@ -177,6 +177,16 @@ int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask, return 0; } +/* Like bitmap_init, but doesn't require 'num' to be a power of 2 or + * a non-trivial mask */ +int mlx4_bitmap_init_no_mask(struct mlx4_bitmap *bitmap, u32 num, + u32 reserved_bot, u32 reserved_top) +{ + u32 num_rounded = roundup_pow_of_two(num); + return mlx4_bitmap_init(bitmap, num_rounded, num_rounded - 1, + reserved_bot, num_rounded - num + reserved_top); +} + void mlx4_bitmap_cleanup(struct mlx4_bitmap *bitmap) { kfree(bitmap->table); diff --git a/drivers/net/mlx4/mlx4.h b/drivers/net/mlx4/mlx4.h index bc72d6e..5836c94 100644 --- a/drivers/net/mlx4/mlx4.h +++ b/drivers/net/mlx4/mlx4.h @@ -330,6 +330,8 @@ u32 mlx4_bitmap_alloc_range(struct mlx4_bitmap *bitmap, int cnt, int align); void mlx4_bitmap_free_range(struct mlx4_bitmap *bitmap, u32 obj, int cnt); int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask, u32 reserved_bot, u32 resetrved_top); +int mlx4_bitmap_init_no_mask(struct mlx4_bitmap *bitmap, u32 num, + u32 reserved_bot, u32 reserved_top); void mlx4_bitmap_cleanup(struct mlx4_bitmap *bitmap); int mlx4_reset(struct mlx4_dev *dev); -- 1.6.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html