diff options
author | Jason Gunthorpe <jgg@mellanox.com> | 2018-09-16 20:48:06 +0300 |
---|---|---|
committer | Doug Ledford <dledford@redhat.com> | 2018-09-21 11:54:46 -0400 |
commit | 597ecc5a095406a668e53ab330495ddb65327f77 (patch) | |
tree | db33ff15c4be7bea3f1ab47702c951ecae189509 | |
parent | 41b4deeaa123e62e1037af7a0be547af2e0e05f1 (diff) |
RDMA/umem: Get rid of struct ib_umem.odp_data
This no longer has any use, we can use container_of to get to the
umem_odp, and a simple flag to indicate if this is an odp MR. Remove the
few remaining references to it.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
-rw-r--r-- | drivers/infiniband/core/umem.c | 8 | ||||
-rw-r--r-- | drivers/infiniband/core/umem_odp.c | 3 | ||||
-rw-r--r-- | drivers/infiniband/hw/mlx5/mem.c | 9 | ||||
-rw-r--r-- | drivers/infiniband/hw/mlx5/mr.c | 13 | ||||
-rw-r--r-- | drivers/infiniband/hw/mlx5/odp.c | 14 | ||||
-rw-r--r-- | include/rdma/ib_umem.h | 6 |
6 files changed, 27 insertions, 26 deletions
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c index 88b9b88f90e1..fec5d489e311 100644 --- a/drivers/infiniband/core/umem.c +++ b/drivers/infiniband/core/umem.c @@ -112,7 +112,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr, umem = kzalloc(sizeof(struct ib_umem_odp), GFP_KERNEL); if (!umem) return ERR_PTR(-ENOMEM); - umem->odp_data = to_ib_umem_odp(umem); + umem->is_odp = 1; } else { umem = kzalloc(sizeof(*umem), GFP_KERNEL); if (!umem) @@ -243,7 +243,7 @@ EXPORT_SYMBOL(ib_umem_get); static void __ib_umem_release_tail(struct ib_umem *umem) { mmdrop(umem->owning_mm); - if (umem->odp_data) + if (umem->is_odp) kfree(to_ib_umem_odp(umem)); else kfree(umem); @@ -268,7 +268,7 @@ void ib_umem_release(struct ib_umem *umem) { struct ib_ucontext *context = umem->context; - if (umem->odp_data) { + if (umem->is_odp) { ib_umem_odp_release(to_ib_umem_odp(umem)); __ib_umem_release_tail(umem); return; @@ -306,7 +306,7 @@ int ib_umem_page_count(struct ib_umem *umem) int n; struct scatterlist *sg; - if (umem->odp_data) + if (umem->is_odp) return ib_umem_num_pages(umem); n = 0; diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/umem_odp.c index 900fdedfe910..42272b2bf595 100644 --- a/drivers/infiniband/core/umem_odp.c +++ b/drivers/infiniband/core/umem_odp.c @@ -291,6 +291,7 @@ struct ib_umem_odp *ib_alloc_odp_umem(struct ib_ucontext *context, umem->address = addr; umem->page_shift = PAGE_SHIFT; umem->writable = 1; + umem->is_odp = 1; mutex_init(&odp_data->umem_mutex); init_completion(&odp_data->notifier_completion); @@ -319,8 +320,6 @@ struct ib_umem_odp *ib_alloc_odp_umem(struct ib_ucontext *context, &context->no_private_counters); up_write(&context->umem_rwsem); - umem->odp_data = odp_data; - return odp_data; out_page_list: diff --git a/drivers/infiniband/hw/mlx5/mem.c b/drivers/infiniband/hw/mlx5/mem.c index f3dbd75a0a96..549234988bb4 100644 --- a/drivers/infiniband/hw/mlx5/mem.c +++ b/drivers/infiniband/hw/mlx5/mem.c @@ -57,7 +57,7 @@ void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr, int entry; unsigned long page_shift = umem->page_shift; - if (umem->odp_data) { + if (umem->is_odp) { *ncont = ib_umem_page_count(umem); *count = *ncont << (page_shift - PAGE_SHIFT); *shift = page_shift; @@ -152,14 +152,13 @@ void __mlx5_ib_populate_pas(struct mlx5_ib_dev *dev, struct ib_umem *umem, struct scatterlist *sg; int entry; #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING - const bool odp = umem->odp_data != NULL; - - if (odp) { + if (umem->is_odp) { WARN_ON(shift != 0); WARN_ON(access_flags != (MLX5_IB_MTT_READ | MLX5_IB_MTT_WRITE)); for (i = 0; i < num_pages; ++i) { - dma_addr_t pa = umem->odp_data->dma_list[offset + i]; + dma_addr_t pa = + to_ib_umem_odp(umem)->dma_list[offset + i]; pas[i] = cpu_to_be64(umem_dma_to_mtt(pa)); } diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index affbf2831ccd..6aac3a107330 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -98,7 +98,7 @@ static bool use_umr_mtt_update(struct mlx5_ib_mr *mr, u64 start, u64 length) #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING static void update_odp_mr(struct mlx5_ib_mr *mr) { - if (mr->umem->odp_data) { + if (mr->umem->is_odp) { /* * This barrier prevents the compiler from moving the * setting of umem->odp_data->private to point to our @@ -107,7 +107,7 @@ static void update_odp_mr(struct mlx5_ib_mr *mr) * handle invalidations. */ smp_wmb(); - mr->umem->odp_data->private = mr; + to_ib_umem_odp(mr->umem)->private = mr; /* * Make sure we will see the new * umem->odp_data->private value in the invalidation @@ -1624,15 +1624,16 @@ static void dereg_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr) struct ib_umem *umem = mr->umem; #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING - if (umem && umem->odp_data) { + if (umem && umem->is_odp) { + struct ib_umem_odp *umem_odp = to_ib_umem_odp(umem); + /* Prevent new page faults from succeeding */ mr->live = 0; /* Wait for all running page-fault handlers to finish. */ synchronize_srcu(&dev->mr_srcu); /* Destroy all page mappings */ - if (umem->odp_data->page_list) - mlx5_ib_invalidate_range(to_ib_umem_odp(umem), - ib_umem_start(umem), + if (umem_odp->page_list) + mlx5_ib_invalidate_range(umem_odp, ib_umem_start(umem), ib_umem_end(umem)); else mlx5_ib_free_implicit_mr(mr); diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c index 5b9fd56186bd..d4780bded74a 100644 --- a/drivers/infiniband/hw/mlx5/odp.c +++ b/drivers/infiniband/hw/mlx5/odp.c @@ -371,11 +371,12 @@ static struct ib_umem_odp *implicit_mr_get_data(struct mlx5_ib_mr *mr, struct ib_ucontext *ctx = mr->ibmr.pd->uobject->context; struct mlx5_ib_dev *dev = to_mdev(mr->ibmr.pd->device); struct ib_umem_odp *odp, *result = NULL; + struct ib_umem_odp *odp_mr = to_ib_umem_odp(mr->umem); u64 addr = io_virt & MLX5_IMR_MTT_MASK; int nentries = 0, start_idx = 0, ret; struct mlx5_ib_mr *mtt; - mutex_lock(&mr->umem->odp_data->umem_mutex); + mutex_lock(&odp_mr->umem_mutex); odp = odp_lookup(ctx, addr, 1, mr); mlx5_ib_dbg(dev, "io_virt:%llx bcnt:%zx addr:%llx odp:%p\n", @@ -388,14 +389,14 @@ next_mr: } else { odp = ib_alloc_odp_umem(ctx, addr, MLX5_IMR_MTT_SIZE); if (IS_ERR(odp)) { - mutex_unlock(&mr->umem->odp_data->umem_mutex); + mutex_unlock(&odp_mr->umem_mutex); return ERR_CAST(odp); } mtt = implicit_mr_alloc(mr->ibmr.pd, &odp->umem, 0, mr->access_flags); if (IS_ERR(mtt)) { - mutex_unlock(&mr->umem->odp_data->umem_mutex); + mutex_unlock(&odp_mr->umem_mutex); ib_umem_release(&odp->umem); return ERR_CAST(mtt); } @@ -433,7 +434,7 @@ next_mr: } } - mutex_unlock(&mr->umem->odp_data->umem_mutex); + mutex_unlock(&odp_mr->umem_mutex); return result; } @@ -498,6 +499,7 @@ void mlx5_ib_free_implicit_mr(struct mlx5_ib_mr *imr) static int pagefault_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr, u64 io_virt, size_t bcnt, u32 *bytes_mapped) { + struct ib_umem_odp *odp_mr = to_ib_umem_odp(mr->umem); u64 access_mask = ODP_READ_ALLOWED_BIT; int npages = 0, page_shift, np; u64 start_idx, page_mask; @@ -506,7 +508,7 @@ static int pagefault_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr, size_t size; int ret; - if (!mr->umem->odp_data->page_list) { + if (!odp_mr->page_list) { odp = implicit_mr_get_data(mr, io_virt, bcnt); if (IS_ERR(odp)) @@ -514,7 +516,7 @@ static int pagefault_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr, mr = odp->private; } else { - odp = mr->umem->odp_data; + odp = odp_mr; } next_mr: diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h index e1c00b2ead19..5d3755ec5afa 100644 --- a/include/rdma/ib_umem.h +++ b/include/rdma/ib_umem.h @@ -46,10 +46,10 @@ struct ib_umem { size_t length; unsigned long address; int page_shift; - int writable; - int hugetlb; + u32 writable : 1; + u32 hugetlb : 1; + u32 is_odp : 1; struct work_struct work; - struct ib_umem_odp *odp_data; struct sg_table sg_head; int nmap; int npages; |