aboutsummaryrefslogtreecommitdiff
path: root/drivers/infiniband/hw
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/infiniband/hw')
-rw-r--r--drivers/infiniband/hw/ehca/ehca_classes.h1
-rw-r--r--drivers/infiniband/hw/ehca/ehca_hca.c4
-rw-r--r--drivers/infiniband/hw/ehca/ehca_irq.c4
-rw-r--r--drivers/infiniband/hw/ehca/ehca_qp.c2
-rw-r--r--drivers/infiniband/hw/ehca/ipz_pt_fn.c1
-rw-r--r--drivers/infiniband/hw/mlx4/cq.c12
-rw-r--r--drivers/infiniband/hw/mlx4/main.c11
-rw-r--r--drivers/infiniband/hw/mlx4/mlx4_ib.h15
-rw-r--r--drivers/infiniband/hw/mlx4/mr.c70
-rw-r--r--drivers/infiniband/hw/mlx4/qp.c74
-rw-r--r--drivers/infiniband/hw/mthca/mthca_dev.h1
-rw-r--r--drivers/infiniband/hw/mthca/mthca_mr.c26
12 files changed, 206 insertions, 15 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_classes.h b/drivers/infiniband/hw/ehca/ehca_classes.h
index 1e9e99a1393..0b0618edd64 100644
--- a/drivers/infiniband/hw/ehca/ehca_classes.h
+++ b/drivers/infiniband/hw/ehca/ehca_classes.h
@@ -194,6 +194,7 @@ struct ehca_qp {
u32 packet_count;
atomic_t nr_events; /* events seen */
wait_queue_head_t wait_completion;
+ int mig_armed;
};
#define IS_SRQ(qp) (qp->ext_type == EQPT_SRQ)
diff --git a/drivers/infiniband/hw/ehca/ehca_hca.c b/drivers/infiniband/hw/ehca/ehca_hca.c
index bc3b37d2070..46288220cfb 100644
--- a/drivers/infiniband/hw/ehca/ehca_hca.c
+++ b/drivers/infiniband/hw/ehca/ehca_hca.c
@@ -114,7 +114,9 @@ int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
}
props->max_pkeys = 16;
- props->local_ca_ack_delay = min_t(u8, rblock->local_ca_ack_delay, 255);
+ /* Some FW versions say 0 here; insert sensible value in that case */
+ props->local_ca_ack_delay = rblock->local_ca_ack_delay ?
+ min_t(u8, rblock->local_ca_ack_delay, 255) : 12;
props->max_raw_ipv6_qp = limit_uint(rblock->max_raw_ipv6_qp);
props->max_raw_ethy_qp = limit_uint(rblock->max_raw_ethy_qp);
props->max_mcast_grp = limit_uint(rblock->max_mcast_grp);
diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c
index 0792d930c48..99642a6e17c 100644
--- a/drivers/infiniband/hw/ehca/ehca_irq.c
+++ b/drivers/infiniband/hw/ehca/ehca_irq.c
@@ -178,6 +178,10 @@ static void dispatch_qp_event(struct ehca_shca *shca, struct ehca_qp *qp,
{
struct ib_event event;
+ /* PATH_MIG without the QP ever having been armed is false alarm */
+ if (event_type == IB_EVENT_PATH_MIG && !qp->mig_armed)
+ return;
+
event.device = &shca->ib_device;
event.event = event_type;
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
index 3f59587338e..ea13efddf17 100644
--- a/drivers/infiniband/hw/ehca/ehca_qp.c
+++ b/drivers/infiniband/hw/ehca/ehca_qp.c
@@ -1460,6 +1460,8 @@ static int internal_modify_qp(struct ib_qp *ibqp,
goto modify_qp_exit2;
}
mqpcb->path_migration_state = attr->path_mig_state + 1;
+ if (attr->path_mig_state == IB_MIG_REARM)
+ my_qp->mig_armed = 1;
update_mask |=
EHCA_BMASK_SET(MQPCB_MASK_PATH_MIGRATION_STATE, 1);
}
diff --git a/drivers/infiniband/hw/ehca/ipz_pt_fn.c b/drivers/infiniband/hw/ehca/ipz_pt_fn.c
index 661f8db6270..c3a32846543 100644
--- a/drivers/infiniband/hw/ehca/ipz_pt_fn.c
+++ b/drivers/infiniband/hw/ehca/ipz_pt_fn.c
@@ -163,6 +163,7 @@ static int alloc_small_queue_page(struct ipz_queue *queue, struct ehca_pd *pd)
out:
ehca_err(pd->ib_pd.device, "failed to allocate small queue page");
+ mutex_unlock(&pd->lock);
return 0;
}
diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c
index 299f20832ab..0b191a4842c 100644
--- a/drivers/infiniband/hw/mlx4/cq.c
+++ b/drivers/infiniband/hw/mlx4/cq.c
@@ -637,6 +637,7 @@ repoll:
case MLX4_OPCODE_SEND_IMM:
wc->wc_flags |= IB_WC_WITH_IMM;
case MLX4_OPCODE_SEND:
+ case MLX4_OPCODE_SEND_INVAL:
wc->opcode = IB_WC_SEND;
break;
case MLX4_OPCODE_RDMA_READ:
@@ -657,6 +658,12 @@ repoll:
case MLX4_OPCODE_LSO:
wc->opcode = IB_WC_LSO;
break;
+ case MLX4_OPCODE_FMR:
+ wc->opcode = IB_WC_FAST_REG_MR;
+ break;
+ case MLX4_OPCODE_LOCAL_INVAL:
+ wc->opcode = IB_WC_LOCAL_INV;
+ break;
}
} else {
wc->byte_len = be32_to_cpu(cqe->byte_cnt);
@@ -667,6 +674,11 @@ repoll:
wc->wc_flags = IB_WC_WITH_IMM;
wc->ex.imm_data = cqe->immed_rss_invalid;
break;
+ case MLX4_RECV_OPCODE_SEND_INVAL:
+ wc->opcode = IB_WC_RECV;
+ wc->wc_flags = IB_WC_WITH_INVALIDATE;
+ wc->ex.invalidate_rkey = be32_to_cpu(cqe->immed_rss_invalid);
+ break;
case MLX4_RECV_OPCODE_SEND:
wc->opcode = IB_WC_RECV;
wc->wc_flags = 0;
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index bcf50648fa1..38d6907ab52 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -104,6 +104,12 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
if (dev->dev->caps.max_gso_sz)
props->device_cap_flags |= IB_DEVICE_UD_TSO;
+ if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
+ props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
+ if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
+ (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
+ (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
+ props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
0xffffff;
@@ -127,6 +133,7 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1;
props->max_srq_sge = dev->dev->caps.max_srq_sge;
+ props->max_fast_reg_page_list_len = PAGE_SIZE / sizeof (u64);
props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay;
props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
IB_ATOMIC_HCA : IB_ATOMIC_NONE;
@@ -565,6 +572,7 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
ibdev->ib_dev.owner = THIS_MODULE;
ibdev->ib_dev.node_type = RDMA_NODE_IB_CA;
+ ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
ibdev->ib_dev.phys_port_cnt = dev->caps.num_ports;
ibdev->ib_dev.num_comp_vectors = 1;
ibdev->ib_dev.dma_device = &dev->pdev->dev;
@@ -627,6 +635,9 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr;
ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr;
ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
+ ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
+ ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
+ ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list;
ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
index c4cf5b69eef..d26a91317d4 100644
--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -83,6 +83,11 @@ struct mlx4_ib_mr {
struct ib_umem *umem;
};
+struct mlx4_ib_fast_reg_page_list {
+ struct ib_fast_reg_page_list ibfrpl;
+ dma_addr_t map;
+};
+
struct mlx4_ib_fmr {
struct ib_fmr ibfmr;
struct mlx4_fmr mfmr;
@@ -199,6 +204,11 @@ static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
return container_of(ibmr, struct mlx4_ib_mr, ibmr);
}
+static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
+{
+ return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl);
+}
+
static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
{
return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
@@ -239,6 +249,11 @@ struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
u64 virt_addr, int access_flags,
struct ib_udata *udata);
int mlx4_ib_dereg_mr(struct ib_mr *mr);
+struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
+ int max_page_list_len);
+struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
+ int page_list_len);
+void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c
index 68e92485fc7..db2086faa4e 100644
--- a/drivers/infiniband/hw/mlx4/mr.c
+++ b/drivers/infiniband/hw/mlx4/mr.c
@@ -183,6 +183,76 @@ int mlx4_ib_dereg_mr(struct ib_mr *ibmr)
return 0;
}
+struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
+ int max_page_list_len)
+{
+ struct mlx4_ib_dev *dev = to_mdev(pd->device);
+ struct mlx4_ib_mr *mr;
+ int err;
+
+ mr = kmalloc(sizeof *mr, GFP_KERNEL);
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
+
+ err = mlx4_mr_alloc(dev->dev, to_mpd(pd)->pdn, 0, 0, 0,
+ max_page_list_len, 0, &mr->mmr);
+ if (err)
+ goto err_free;
+
+ err = mlx4_mr_enable(dev->dev, &mr->mmr);
+ if (err)
+ goto err_mr;
+
+ return &mr->ibmr;
+
+err_mr:
+ mlx4_mr_free(dev->dev, &mr->mmr);
+
+err_free:
+ kfree(mr);
+ return ERR_PTR(err);
+}
+
+struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
+ int page_list_len)
+{
+ struct mlx4_ib_dev *dev = to_mdev(ibdev);
+ struct mlx4_ib_fast_reg_page_list *mfrpl;
+ int size = page_list_len * sizeof (u64);
+
+ if (size > PAGE_SIZE)
+ return ERR_PTR(-EINVAL);
+
+ mfrpl = kmalloc(sizeof *mfrpl, GFP_KERNEL);
+ if (!mfrpl)
+ return ERR_PTR(-ENOMEM);
+
+ mfrpl->ibfrpl.page_list = dma_alloc_coherent(&dev->dev->pdev->dev,
+ size, &mfrpl->map,
+ GFP_KERNEL);
+ if (!mfrpl->ibfrpl.page_list)
+ goto err_free;
+
+ WARN_ON(mfrpl->map & 0x3f);
+
+ return &mfrpl->ibfrpl;
+
+err_free:
+ kfree(mfrpl);
+ return ERR_PTR(-ENOMEM);
+}
+
+void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
+{
+ struct mlx4_ib_dev *dev = to_mdev(page_list->device);
+ struct mlx4_ib_fast_reg_page_list *mfrpl = to_mfrpl(page_list);
+ int size = page_list->max_page_list_len * sizeof (u64);
+
+ dma_free_coherent(&dev->dev->pdev->dev, size, page_list->page_list,
+ mfrpl->map);
+ kfree(mfrpl);
+}
+
struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int acc,
struct ib_fmr_attr *fmr_attr)
{
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 89eb6cbe592..02a99bc4442 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -78,6 +78,9 @@ static const __be32 mlx4_ib_opcode[] = {
[IB_WR_RDMA_READ] = __constant_cpu_to_be32(MLX4_OPCODE_RDMA_READ),
[IB_WR_ATOMIC_CMP_AND_SWP] = __constant_cpu_to_be32(MLX4_OPCODE_ATOMIC_CS),
[IB_WR_ATOMIC_FETCH_AND_ADD] = __constant_cpu_to_be32(MLX4_OPCODE_ATOMIC_FA),
+ [IB_WR_SEND_WITH_INV] = __constant_cpu_to_be32(MLX4_OPCODE_SEND_INVAL),
+ [IB_WR_LOCAL_INV] = __constant_cpu_to_be32(MLX4_OPCODE_LOCAL_INVAL),
+ [IB_WR_FAST_REG_MR] = __constant_cpu_to_be32(MLX4_OPCODE_FMR),
};
static struct mlx4_ib_sqp *to_msqp(struct mlx4_ib_qp *mqp)
@@ -976,6 +979,10 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
context->pd = cpu_to_be32(to_mpd(ibqp->pd)->pdn);
context->params1 = cpu_to_be32(MLX4_IB_ACK_REQ_FREQ << 28);
+ /* Set "fast registration enabled" for all kernel QPs */
+ if (!qp->ibqp.uobject)
+ context->params1 |= cpu_to_be32(1 << 11);
+
if (attr_mask & IB_QP_RNR_RETRY) {
context->params1 |= cpu_to_be32(attr->rnr_retry << 13);
optpar |= MLX4_QP_OPTPAR_RNR_RETRY;
@@ -1322,6 +1329,38 @@ static int mlx4_wq_overflow(struct mlx4_ib_wq *wq, int nreq, struct ib_cq *ib_cq
return cur + nreq >= wq->max_post;
}
+static __be32 convert_access(int acc)
+{
+ return (acc & IB_ACCESS_REMOTE_ATOMIC ? cpu_to_be32(MLX4_WQE_FMR_PERM_ATOMIC) : 0) |
+ (acc & IB_ACCESS_REMOTE_WRITE ? cpu_to_be32(MLX4_WQE_FMR_PERM_REMOTE_WRITE) : 0) |
+ (acc & IB_ACCESS_REMOTE_READ ? cpu_to_be32(MLX4_WQE_FMR_PERM_REMOTE_READ) : 0) |
+ (acc & IB_ACCESS_LOCAL_WRITE ? cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_WRITE) : 0) |
+ cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_READ);
+}
+
+static void set_fmr_seg(struct mlx4_wqe_fmr_seg *fseg, struct ib_send_wr *wr)
+{
+ struct mlx4_ib_fast_reg_page_list *mfrpl = to_mfrpl(wr->wr.fast_reg.page_list);
+
+ fseg->flags = convert_access(wr->wr.fast_reg.access_flags);
+ fseg->mem_key = cpu_to_be32(wr->wr.fast_reg.rkey);
+ fseg->buf_list = cpu_to_be64(mfrpl->map);
+ fseg->start_addr = cpu_to_be64(wr->wr.fast_reg.iova_start);
+ fseg->reg_len = cpu_to_be64(wr->wr.fast_reg.length);
+ fseg->offset = 0; /* XXX -- is this just for ZBVA? */
+ fseg->page_size = cpu_to_be32(wr->wr.fast_reg.page_shift);
+ fseg->reserved[0] = 0;
+ fseg->reserved[1] = 0;
+}
+
+static void set_local_inv_seg(struct mlx4_wqe_local_inval_seg *iseg, u32 rkey)
+{
+ iseg->flags = 0;
+ iseg->mem_key = cpu_to_be32(rkey);
+ iseg->guest_id = 0;
+ iseg->pa = 0;
+}
+
static __always_inline void set_raddr_seg(struct mlx4_wqe_raddr_seg *rseg,
u64 remote_addr, u32 rkey)
{
@@ -1395,7 +1434,7 @@ static void __set_data_seg(struct mlx4_wqe_data_seg *dseg, struct ib_sge *sg)
dseg->addr = cpu_to_be64(sg->addr);
}
-static int build_lso_seg(struct mlx4_lso_seg *wqe, struct ib_send_wr *wr,
+static int build_lso_seg(struct mlx4_wqe_lso_seg *wqe, struct ib_send_wr *wr,
struct mlx4_ib_qp *qp, unsigned *lso_seg_len)
{
unsigned halign = ALIGN(sizeof *wqe + wr->wr.ud.hlen, 16);
@@ -1423,6 +1462,21 @@ static int build_lso_seg(struct mlx4_lso_seg *wqe, struct ib_send_wr *wr,
return 0;
}
+static __be32 send_ieth(struct ib_send_wr *wr)
+{
+ switch (wr->opcode) {
+ case IB_WR_SEND_WITH_IMM:
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ return wr->ex.imm_data;
+
+ case IB_WR_SEND_WITH_INV:
+ return cpu_to_be32(wr->ex.invalidate_rkey);
+
+ default:
+ return 0;
+ }
+}
+
int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
struct ib_send_wr **bad_wr)
{
@@ -1469,11 +1523,7 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
MLX4_WQE_CTRL_TCP_UDP_CSUM) : 0) |
qp->sq_signal_bits;
- if (wr->opcode == IB_WR_SEND_WITH_IMM ||
- wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM)
- ctrl->imm = wr->ex.imm_data;
- else
- ctrl->imm = 0;
+ ctrl->imm = send_ieth(wr);
wqe += sizeof *ctrl;
size = sizeof *ctrl / 16;
@@ -1505,6 +1555,18 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
size += sizeof (struct mlx4_wqe_raddr_seg) / 16;
break;
+ case IB_WR_LOCAL_INV:
+ set_local_inv_seg(wqe, wr->ex.invalidate_rkey);
+ wqe += sizeof (struct mlx4_wqe_local_inval_seg);
+ size += sizeof (struct mlx4_wqe_local_inval_seg) / 16;
+ break;
+
+ case IB_WR_FAST_REG_MR:
+ set_fmr_seg(wqe, wr);
+ wqe += sizeof (struct mlx4_wqe_fmr_seg);
+ size += sizeof (struct mlx4_wqe_fmr_seg) / 16;
+ break;
+
default:
/* No extra segments required for sends */
break;
diff --git a/drivers/infiniband/hw/mthca/mthca_dev.h b/drivers/infiniband/hw/mthca/mthca_dev.h
index ee4d073c889..252590116df 100644
--- a/drivers/infiniband/hw/mthca/mthca_dev.h
+++ b/drivers/infiniband/hw/mthca/mthca_dev.h
@@ -202,6 +202,7 @@ struct mthca_pd_table {
struct mthca_buddy {
unsigned long **bits;
+ int *num_free;
int max_order;
spinlock_t lock;
};
diff --git a/drivers/infiniband/hw/mthca/mthca_mr.c b/drivers/infiniband/hw/mthca/mthca_mr.c
index 8489b1e81c0..882e6b73591 100644
--- a/drivers/infiniband/hw/mthca/mthca_mr.c
+++ b/drivers/infiniband/hw/mthca/mthca_mr.c
@@ -89,23 +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);
@@ -123,11 +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);
}
@@ -141,7 +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) {
@@ -154,6 +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;
@@ -161,9 +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;
}
@@ -175,6 +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,
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-18 02:56:33 +0000