Merge branch 'linus' into x86/header-guards

[linux-2.6-omap-h63xx.git] / drivers / infiniband / hw / mthca / mthca_mr.c

diff --git a/drivers/infiniband/hw/mthca/mthca_mr.c b/drivers/infiniband/hw/mthca/mthca_mr.c
index 3538da16e3fe9ec4cea862fa7b0100fb3d3225c7..882e6b73591591213f211928be33da0b58ef8901 100644 (file)
--- a/drivers/infiniband/hw/mthca/mthca_mr.c
+++ b/drivers/infiniband/hw/mthca/mthca_mr.c
@@ -29,8 +29,6 @@
  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
- *
- * $Id: mthca_mr.c 1349 2004-12-16 21:09:43Z roland $
  */
 
 #include <linux/slab.h>
@@ -91,23 +89,26 @@ static u32 mthca_buddy_alloc(struct mthca_buddy *buddy, int order)
 
        spin_lock(&buddy->lock);
 
-       for (o = order; o <= buddy->max_order; ++o) {
-               m = 1 << (buddy->max_order - o);
-               seg = find_first_bit(buddy->bits[o], m);
-               if (seg < m)
-                       goto found;
-       }
+       for (o = order; o <= buddy->max_order; ++o)
+               if (buddy->num_free[o]) {
+                       m = 1 << (buddy->max_order - o);
+                       seg = find_first_bit(buddy->bits[o], m);
+                       if (seg < m)
+                               goto found;
+               }
 
        spin_unlock(&buddy->lock);
        return -1;
 
  found:
        clear_bit(seg, buddy->bits[o]);
+       --buddy->num_free[o];
 
        while (o > order) {
                --o;
                seg <<= 1;
                set_bit(seg ^ 1, buddy->bits[o]);
+               ++buddy->num_free[o];
        }
 
        spin_unlock(&buddy->lock);
@@ -125,11 +126,13 @@ static void mthca_buddy_free(struct mthca_buddy *buddy, u32 seg, int order)
 
        while (test_bit(seg ^ 1, buddy->bits[order])) {
                clear_bit(seg ^ 1, buddy->bits[order]);
+               --buddy->num_free[order];
                seg >>= 1;
                ++order;
        }
 
        set_bit(seg, buddy->bits[order]);
+       ++buddy->num_free[order];
 
        spin_unlock(&buddy->lock);
 }
@@ -143,7 +146,9 @@ static int mthca_buddy_init(struct mthca_buddy *buddy, int max_order)
 
        buddy->bits = kzalloc((buddy->max_order + 1) * sizeof (long *),
                              GFP_KERNEL);
-       if (!buddy->bits)
+       buddy->num_free = kzalloc((buddy->max_order + 1) * sizeof (int *),
+                                 GFP_KERNEL);
+       if (!buddy->bits || !buddy->num_free)
                goto err_out;
 
        for (i = 0; i <= buddy->max_order; ++i) {
@@ -156,6 +161,7 @@ static int mthca_buddy_init(struct mthca_buddy *buddy, int max_order)
        }
 
        set_bit(0, buddy->bits[buddy->max_order]);
+       buddy->num_free[buddy->max_order] = 1;
 
        return 0;
 
@@ -163,9 +169,10 @@ err_out_free:
        for (i = 0; i <= buddy->max_order; ++i)
                kfree(buddy->bits[i]);
 
+err_out:
        kfree(buddy->bits);
+       kfree(buddy->num_free);
 
-err_out:
        return -ENOMEM;
 }
 
@@ -177,6 +184,7 @@ static void mthca_buddy_cleanup(struct mthca_buddy *buddy)
                kfree(buddy->bits[i]);
 
        kfree(buddy->bits);
+       kfree(buddy->num_free);
 }
 
 static u32 mthca_alloc_mtt_range(struct mthca_dev *dev, int order,
@@ -818,15 +826,9 @@ int mthca_arbel_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
 
 void mthca_tavor_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr)
 {
-       u32 key;
-
        if (!fmr->maps)
                return;
 
-       key = tavor_key_to_hw_index(fmr->ibmr.lkey);
-       key &= dev->limits.num_mpts - 1;
-       fmr->ibmr.lkey = fmr->ibmr.rkey = tavor_hw_index_to_key(key);
-
        fmr->maps = 0;
 
        writeb(MTHCA_MPT_STATUS_SW, fmr->mem.tavor.mpt);
@@ -834,16 +836,9 @@ void mthca_tavor_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr)
 
 void mthca_arbel_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr)
 {
-       u32 key;
-
        if (!fmr->maps)
                return;
 
-       key = arbel_key_to_hw_index(fmr->ibmr.lkey);
-       key &= dev->limits.num_mpts - 1;
-       key = adjust_key(dev, key);
-       fmr->ibmr.lkey = fmr->ibmr.rkey = arbel_hw_index_to_key(key);
-
        fmr->maps = 0;
 
        *(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_SW;