summaryrefslogtreecommitdiffstats
path: root/drivers/infiniband/core/cq.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/infiniband/core/cq.c')
-rw-r--r--drivers/infiniband/core/cq.c95
1 files changed, 78 insertions, 17 deletions
diff --git a/drivers/infiniband/core/cq.c b/drivers/infiniband/core/cq.c
index a24c900fbdf6..7c599878ccf7 100644
--- a/drivers/infiniband/core/cq.c
+++ b/drivers/infiniband/core/cq.c
@@ -18,6 +18,53 @@
#define IB_POLL_FLAGS \
(IB_CQ_NEXT_COMP | IB_CQ_REPORT_MISSED_EVENTS)
+static const struct dim_cq_moder
+rdma_dim_prof[RDMA_DIM_PARAMS_NUM_PROFILES] = {
+ {1, 0, 1, 0},
+ {1, 0, 4, 0},
+ {2, 0, 4, 0},
+ {2, 0, 8, 0},
+ {4, 0, 8, 0},
+ {16, 0, 8, 0},
+ {16, 0, 16, 0},
+ {32, 0, 16, 0},
+ {32, 0, 32, 0},
+};
+
+static void ib_cq_rdma_dim_work(struct work_struct *w)
+{
+ struct dim *dim = container_of(w, struct dim, work);
+ struct ib_cq *cq = dim->priv;
+
+ u16 usec = rdma_dim_prof[dim->profile_ix].usec;
+ u16 comps = rdma_dim_prof[dim->profile_ix].comps;
+
+ dim->state = DIM_START_MEASURE;
+
+ cq->device->ops.modify_cq(cq, comps, usec);
+}
+
+static void rdma_dim_init(struct ib_cq *cq)
+{
+ struct dim *dim;
+
+ if (!cq->device->ops.modify_cq || !cq->device->use_cq_dim ||
+ cq->poll_ctx == IB_POLL_DIRECT)
+ return;
+
+ dim = kzalloc(sizeof(struct dim), GFP_KERNEL);
+ if (!dim)
+ return;
+
+ dim->state = DIM_START_MEASURE;
+ dim->tune_state = DIM_GOING_RIGHT;
+ dim->profile_ix = RDMA_DIM_START_PROFILE;
+ dim->priv = cq;
+ cq->dim = dim;
+
+ INIT_WORK(&dim->work, ib_cq_rdma_dim_work);
+}
+
static int __ib_process_cq(struct ib_cq *cq, int budget, struct ib_wc *wcs,
int batch)
{
@@ -78,6 +125,7 @@ static void ib_cq_completion_direct(struct ib_cq *cq, void *private)
static int ib_poll_handler(struct irq_poll *iop, int budget)
{
struct ib_cq *cq = container_of(iop, struct ib_cq, iop);
+ struct dim *dim = cq->dim;
int completed;
completed = __ib_process_cq(cq, budget, cq->wc, IB_POLL_BATCH);
@@ -87,6 +135,9 @@ static int ib_poll_handler(struct irq_poll *iop, int budget)
irq_poll_sched(&cq->iop);
}
+ if (dim)
+ rdma_dim(dim, completed);
+
return completed;
}
@@ -105,6 +156,8 @@ static void ib_cq_poll_work(struct work_struct *work)
if (completed >= IB_POLL_BUDGET_WORKQUEUE ||
ib_req_notify_cq(cq, IB_POLL_FLAGS) > 0)
queue_work(cq->comp_wq, &cq->work);
+ else if (cq->dim)
+ rdma_dim(cq->dim, completed);
}
static void ib_cq_completion_workqueue(struct ib_cq *cq, void *private)
@@ -113,7 +166,7 @@ static void ib_cq_completion_workqueue(struct ib_cq *cq, void *private)
}
/**
- * __ib_alloc_cq - allocate a completion queue
+ * __ib_alloc_cq_user - 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
@@ -139,25 +192,30 @@ struct ib_cq *__ib_alloc_cq_user(struct ib_device *dev, void *private,
struct ib_cq *cq;
int ret = -ENOMEM;
- cq = dev->ops.create_cq(dev, &cq_attr, NULL);
- if (IS_ERR(cq))
- return cq;
+ cq = rdma_zalloc_drv_obj(dev, ib_cq);
+ if (!cq)
+ return ERR_PTR(ret);
cq->device = dev;
- cq->uobject = NULL;
- cq->event_handler = NULL;
cq->cq_context = private;
cq->poll_ctx = poll_ctx;
atomic_set(&cq->usecnt, 0);
cq->wc = kmalloc_array(IB_POLL_BATCH, sizeof(*cq->wc), GFP_KERNEL);
if (!cq->wc)
- goto out_destroy_cq;
+ goto out_free_cq;
cq->res.type = RDMA_RESTRACK_CQ;
rdma_restrack_set_task(&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) {
case IB_POLL_DIRECT:
cq->comp_handler = ib_cq_completion_direct;
@@ -178,29 +236,29 @@ struct ib_cq *__ib_alloc_cq_user(struct ib_device *dev, void *private,
break;
default:
ret = -EINVAL;
- goto out_free_wc;
+ goto out_destroy_cq;
}
return cq;
-out_free_wc:
- kfree(cq->wc);
- rdma_restrack_del(&cq->res);
out_destroy_cq:
+ rdma_restrack_del(&cq->res);
cq->device->ops.destroy_cq(cq, udata);
+out_free_wc:
+ kfree(cq->wc);
+out_free_cq:
+ kfree(cq);
return ERR_PTR(ret);
}
EXPORT_SYMBOL(__ib_alloc_cq_user);
/**
- * ib_free_cq - free a completion queue
+ * ib_free_cq_user - 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)
{
- int ret;
-
if (WARN_ON_ONCE(atomic_read(&cq->usecnt)))
return;
@@ -218,9 +276,12 @@ void ib_free_cq_user(struct ib_cq *cq, struct ib_udata *udata)
WARN_ON_ONCE(1);
}
- kfree(cq->wc);
rdma_restrack_del(&cq->res);
- ret = cq->device->ops.destroy_cq(cq, udata);
- WARN_ON_ONCE(ret);
+ cq->device->ops.destroy_cq(cq, udata);
+ if (cq->dim)
+ cancel_work_sync(&cq->dim->work);
+ kfree(cq->dim);
+ kfree(cq->wc);
+ kfree(cq);
}
EXPORT_SYMBOL(ib_free_cq_user);