diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-17 11:18:18 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-17 11:18:18 -0700 |
commit | a1e16bc7d5f7ca3599d8a7f061841c93a563665e (patch) | |
tree | 73e557536e5dc52894e0e24439406db3510c5434 /drivers/infiniband/core/cq.c | |
parent | 2a934b38c066ff221b08a9c703314a2a1c885dbd (diff) | |
parent | c7a198c700763ac89abbb166378f546aeb9afb33 (diff) |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"A usual cycle for RDMA with a typical mix of driver and core subsystem
updates:
- Driver minor changes and bug fixes for mlx5, efa, rxe, vmw_pvrdma,
hns, usnic, qib, qedr, cxgb4, hns, bnxt_re
- Various rtrs fixes and updates
- Bug fix for mlx4 CM emulation for virtualization scenarios where
MRA wasn't working right
- Use tracepoints instead of pr_debug in the CM code
- Scrub the locking in ucma and cma to close more syzkaller bugs
- Use tasklet_setup in the subsystem
- Revert the idea that 'destroy' operations are not allowed to fail
at the driver level. This proved unworkable from a HW perspective.
- Revise how the umem API works so drivers make fewer mistakes using
it
- XRC support for qedr
- Convert uverbs objects RWQ and MW to new the allocation scheme
- Large queue entry sizes for hns
- Use hmm_range_fault() for mlx5 On Demand Paging
- uverbs APIs to inspect the GID table instead of sysfs
- Move some of the RDMA code for building large page SGLs into
lib/scatterlist"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (191 commits)
RDMA/ucma: Fix use after free in destroy id flow
RDMA/rxe: Handle skb_clone() failure in rxe_recv.c
RDMA/rxe: Move the definitions for rxe_av.network_type to uAPI
RDMA: Explicitly pass in the dma_device to ib_register_device
lib/scatterlist: Do not limit max_segment to PAGE_ALIGNED values
IB/mlx4: Convert rej_tmout radix-tree to XArray
RDMA/rxe: Fix bug rejecting all multicast packets
RDMA/rxe: Fix skb lifetime in rxe_rcv_mcast_pkt()
RDMA/rxe: Remove duplicate entries in struct rxe_mr
IB/hfi,rdmavt,qib,opa_vnic: Update MAINTAINERS
IB/rdmavt: Fix sizeof mismatch
MAINTAINERS: CISCO VIC LOW LATENCY NIC DRIVER
RDMA/bnxt_re: Fix sizeof mismatch for allocation of pbl_tbl.
RDMA/bnxt_re: Use rdma_umem_for_each_dma_block()
RDMA/umem: Move to allocate SG table from pages
lib/scatterlist: Add support in dynamic allocation of SG table from pages
tools/testing/scatterlist: Show errors in human readable form
tools/testing/scatterlist: Rejuvenate bit-rotten test
RDMA/ipoib: Set rtnl_link_ops for ipoib interfaces
RDMA/uverbs: Expose the new GID query API to user space
...
Diffstat (limited to 'drivers/infiniband/core/cq.c')
-rw-r--r-- | drivers/infiniband/core/cq.c | 39 |
1 files changed, 19 insertions, 20 deletions
diff --git a/drivers/infiniband/core/cq.c b/drivers/infiniband/core/cq.c index a92fc3f90bb5..12ebacf52958 100644 --- a/drivers/infiniband/core/cq.c +++ b/drivers/infiniband/core/cq.c @@ -197,24 +197,22 @@ static void ib_cq_completion_workqueue(struct ib_cq *cq, void *private) } /** - * __ib_alloc_cq_user - allocate a completion queue + * __ib_alloc_cq allocate a completion queue * @dev: device to allocate the CQ for * @private: driver private data, accessible from cq->cq_context * @nr_cqe: number of CQEs to allocate * @comp_vector: HCA completion vectors for this CQ * @poll_ctx: context to poll the CQ from. * @caller: module owner name. - * @udata: Valid user data or NULL for kernel object * * This is the proper interface to allocate a CQ for in-kernel users. A * CQ allocated with this interface will automatically be polled from the * specified context. The ULP must use wr->wr_cqe instead of wr->wr_id * to use this CQ abstraction. */ -struct ib_cq *__ib_alloc_cq_user(struct ib_device *dev, void *private, - int nr_cqe, int comp_vector, - enum ib_poll_context poll_ctx, - const char *caller, struct ib_udata *udata) +struct ib_cq *__ib_alloc_cq(struct ib_device *dev, void *private, int nr_cqe, + int comp_vector, enum ib_poll_context poll_ctx, + const char *caller) { struct ib_cq_init_attr cq_attr = { .cqe = nr_cqe, @@ -237,15 +235,13 @@ struct ib_cq *__ib_alloc_cq_user(struct ib_device *dev, void *private, if (!cq->wc) goto out_free_cq; - cq->res.type = RDMA_RESTRACK_CQ; - rdma_restrack_set_task(&cq->res, caller); + rdma_restrack_new(&cq->res, RDMA_RESTRACK_CQ); + rdma_restrack_set_name(&cq->res, caller); ret = dev->ops.create_cq(cq, &cq_attr, NULL); if (ret) goto out_free_wc; - rdma_restrack_kadd(&cq->res); - rdma_dim_init(cq); switch (cq->poll_ctx) { @@ -271,21 +267,22 @@ struct ib_cq *__ib_alloc_cq_user(struct ib_device *dev, void *private, goto out_destroy_cq; } + rdma_restrack_add(&cq->res); trace_cq_alloc(cq, nr_cqe, comp_vector, poll_ctx); return cq; out_destroy_cq: rdma_dim_destroy(cq); - rdma_restrack_del(&cq->res); - cq->device->ops.destroy_cq(cq, udata); + cq->device->ops.destroy_cq(cq, NULL); out_free_wc: + rdma_restrack_put(&cq->res); kfree(cq->wc); out_free_cq: kfree(cq); trace_cq_alloc_error(nr_cqe, comp_vector, poll_ctx, ret); return ERR_PTR(ret); } -EXPORT_SYMBOL(__ib_alloc_cq_user); +EXPORT_SYMBOL(__ib_alloc_cq); /** * __ib_alloc_cq_any - allocate a completion queue @@ -310,18 +307,19 @@ struct ib_cq *__ib_alloc_cq_any(struct ib_device *dev, void *private, atomic_inc_return(&counter) % min_t(int, dev->num_comp_vectors, num_online_cpus()); - return __ib_alloc_cq_user(dev, private, nr_cqe, comp_vector, poll_ctx, - caller, NULL); + return __ib_alloc_cq(dev, private, nr_cqe, comp_vector, poll_ctx, + caller); } EXPORT_SYMBOL(__ib_alloc_cq_any); /** - * ib_free_cq_user - free a completion queue + * ib_free_cq - free a completion queue * @cq: completion queue to free. - * @udata: User data or NULL for kernel object */ -void ib_free_cq_user(struct ib_cq *cq, struct ib_udata *udata) +void ib_free_cq(struct ib_cq *cq) { + int ret; + if (WARN_ON_ONCE(atomic_read(&cq->usecnt))) return; if (WARN_ON_ONCE(cq->cqe_used)) @@ -343,12 +341,13 @@ void ib_free_cq_user(struct ib_cq *cq, struct ib_udata *udata) rdma_dim_destroy(cq); trace_cq_free(cq); + ret = cq->device->ops.destroy_cq(cq, NULL); + WARN_ONCE(ret, "Destroy of kernel CQ shouldn't fail"); rdma_restrack_del(&cq->res); - cq->device->ops.destroy_cq(cq, udata); kfree(cq->wc); kfree(cq); } -EXPORT_SYMBOL(ib_free_cq_user); +EXPORT_SYMBOL(ib_free_cq); void ib_cq_pool_init(struct ib_device *dev) { |