From: Yevgeny Petrilin <yevgenyp-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>
To: rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org
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
Subject: [PATCH 02/25] mlx4_core: add support for arbitrary bitmap sizes
Date: Wed, 04 Nov 2009 17:30:21 +0200 [thread overview]
Message-ID: <4AF19E0D.1030504@mellanox.co.il> (raw)
Signed-off-by: Liran Liss <liranl-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>
---
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
--
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reply other threads:[~2009-11-04 15:30 UTC|newest]
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