diff options
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_umem.h | 2 | ||||
| -rw-r--r-- | include/rdma/ib_umem_odp.h | 58 | ||||
| -rw-r--r-- | include/rdma/ib_verbs.h | 7 |
3 files changed, 36 insertions, 31 deletions
diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h index 1052d0d62be7..a91b2af64ec4 100644 --- a/include/rdma/ib_umem.h +++ b/include/rdma/ib_umem.h @@ -42,7 +42,7 @@ struct ib_ucontext; struct ib_umem_odp; struct ib_umem { - struct ib_ucontext *context; + struct ib_device *ibdev; struct mm_struct *owning_mm; size_t length; unsigned long address; diff --git a/include/rdma/ib_umem_odp.h b/include/rdma/ib_umem_odp.h index 479db5c98ff6..253df1a1fa54 100644 --- a/include/rdma/ib_umem_odp.h +++ b/include/rdma/ib_umem_odp.h @@ -37,11 +37,6 @@ #include <rdma/ib_verbs.h> #include <linux/interval_tree.h> -struct umem_odp_node { - u64 __subtree_last; - struct rb_node rb; -}; - struct ib_umem_odp { struct ib_umem umem; struct ib_ucontext_per_mm *per_mm; @@ -72,7 +67,15 @@ struct ib_umem_odp { int npages; /* Tree tracking */ - struct umem_odp_node interval_tree; + struct interval_tree_node interval_tree; + + /* + * An implicit odp umem cannot be DMA mapped, has 0 length, and serves + * only as an anchor for the driver to hold onto the per_mm. FIXME: + * This should be removed and drivers should work with the per_mm + * directly. + */ + bool is_implicit_odp; struct completion notifier_completion; int dying; @@ -88,14 +91,13 @@ static inline struct ib_umem_odp *to_ib_umem_odp(struct ib_umem *umem) /* Returns the first page of an ODP umem. */ static inline unsigned long ib_umem_start(struct ib_umem_odp *umem_odp) { - return ALIGN_DOWN(umem_odp->umem.address, 1UL << umem_odp->page_shift); + return umem_odp->interval_tree.start; } /* Returns the address of the page after the last one of an ODP umem. */ static inline unsigned long ib_umem_end(struct ib_umem_odp *umem_odp) { - return ALIGN(umem_odp->umem.address + umem_odp->umem.length, - 1UL << umem_odp->page_shift); + return umem_odp->interval_tree.last + 1; } static inline size_t ib_umem_odp_num_pages(struct ib_umem_odp *umem_odp) @@ -120,25 +122,20 @@ static inline size_t ib_umem_odp_num_pages(struct ib_umem_odp *umem_odp) #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING struct ib_ucontext_per_mm { - struct ib_ucontext *context; - struct mm_struct *mm; + struct mmu_notifier mn; struct pid *tgid; - bool active; struct rb_root_cached umem_tree; /* Protects umem_tree */ struct rw_semaphore umem_rwsem; - - struct mmu_notifier mn; - unsigned int odp_mrs_count; - - struct list_head ucontext_list; - struct rcu_head rcu; }; -int ib_umem_odp_get(struct ib_umem_odp *umem_odp, int access); -struct ib_umem_odp *ib_alloc_odp_umem(struct ib_umem_odp *root_umem, - unsigned long addr, size_t size); +struct ib_umem_odp *ib_umem_odp_get(struct ib_udata *udata, unsigned long addr, + size_t size, int access); +struct ib_umem_odp *ib_umem_odp_alloc_implicit(struct ib_udata *udata, + int access); +struct ib_umem_odp *ib_umem_odp_alloc_child(struct ib_umem_odp *root_umem, + unsigned long addr, size_t size); void ib_umem_odp_release(struct ib_umem_odp *umem_odp); int ib_umem_odp_map_dma_pages(struct ib_umem_odp *umem_odp, u64 start_offset, @@ -163,8 +160,17 @@ int rbt_ib_umem_for_each_in_range(struct rb_root_cached *root, * Find first region intersecting with address range. * Return NULL if not found */ -struct ib_umem_odp *rbt_ib_umem_lookup(struct rb_root_cached *root, - u64 addr, u64 length); +static inline struct ib_umem_odp * +rbt_ib_umem_lookup(struct rb_root_cached *root, u64 addr, u64 length) +{ + struct interval_tree_node *node; + + node = interval_tree_iter_first(root, addr, addr + length - 1); + if (!node) + return NULL; + return container_of(node, struct ib_umem_odp, interval_tree); + +} static inline int ib_umem_mmu_notifier_retry(struct ib_umem_odp *umem_odp, unsigned long mmu_seq) @@ -185,9 +191,11 @@ static inline int ib_umem_mmu_notifier_retry(struct ib_umem_odp *umem_odp, #else /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */ -static inline int ib_umem_odp_get(struct ib_umem_odp *umem_odp, int access) +static inline struct ib_umem_odp *ib_umem_odp_get(struct ib_udata *udata, + unsigned long addr, + size_t size, int access) { - return -EINVAL; + return ERR_PTR(-EINVAL); } static inline void ib_umem_odp_release(struct ib_umem_odp *umem_odp) {} diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 4f225175cb91..f659f4a02aa9 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1417,11 +1417,6 @@ struct ib_ucontext { bool cleanup_retryable; - void (*invalidate_range)(struct ib_umem_odp *umem_odp, - unsigned long start, unsigned long end); - struct mutex per_mm_list_lock; - struct list_head per_mm_list; - struct ib_rdmacg_object cg_obj; /* * Implementation details of the RDMA core, don't use in drivers: @@ -2378,6 +2373,8 @@ struct ib_device_ops { u64 iova); int (*unmap_fmr)(struct list_head *fmr_list); int (*dealloc_fmr)(struct ib_fmr *fmr); + void (*invalidate_range)(struct ib_umem_odp *umem_odp, + unsigned long start, unsigned long end); int (*attach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid); int (*detach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid); struct ib_xrcd *(*alloc_xrcd)(struct ib_device *device, |
