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[v4,for-next,12/12] RDMA/hns: Dump detailed driver-specific UCTX

Message ID 1627525163-1683-13-git-send-email-liangwenpeng@huawei.com (mailing list archive)
State Changes Requested
Delegated to: Jason Gunthorpe
Headers show
Series RDMA/hns: Add support for Dynamic Context Attachment | expand

Commit Message

Wenpeng Liang July 29, 2021, 2:19 a.m. UTC 
From: Xi Wang <wangxi11@huawei.com>

Dump DCA mem pool status in UCTX restrack.

Sample output:
$ rdma res show ctx dev hns_0 -dd
 dev hns_0 ctxn 7 pid 1410 comm python3 drv_dca-total 65536 drv_dca-free 40960
 dev hns_0 ctxn 8 pid 1410 comm python3 drv_dca-total 0 drv_dca-free 0

Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
---
 drivers/infiniband/hw/hns/hns_roce_device.h   |  2 ++
 drivers/infiniband/hw/hns/hns_roce_main.c     |  1 +
 drivers/infiniband/hw/hns/hns_roce_restrack.c | 50 +++++++++++++++++++++++++++
 3 files changed, 53 insertions(+)
diff mbox series

Patch

diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h
index bef418d..0dfaca4 100644
--- a/drivers/infiniband/hw/hns/hns_roce_device.h
+++ b/drivers/infiniband/hw/hns/hns_roce_device.h
@@ -1304,4 +1304,6 @@  int hns_roce_init(struct hns_roce_dev *hr_dev);
 void hns_roce_exit(struct hns_roce_dev *hr_dev);
 int hns_roce_fill_res_cq_entry(struct sk_buff *msg,
 			       struct ib_cq *ib_cq);
+int hns_roce_fill_res_ctx_entry(struct sk_buff *msg, struct ib_ucontext *ctx);
+
 #endif /* _HNS_ROCE_DEVICE_H */
diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index e37ece8..4f30c29 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -546,6 +546,7 @@  static const struct ib_device_ops hns_roce_dev_ops = {
 	.destroy_cq = hns_roce_destroy_cq,
 	.disassociate_ucontext = hns_roce_disassociate_ucontext,
 	.fill_res_cq_entry = hns_roce_fill_res_cq_entry,
+	.fill_res_ctx_entry = hns_roce_fill_res_ctx_entry,
 	.get_dma_mr = hns_roce_get_dma_mr,
 	.get_link_layer = hns_roce_get_link_layer,
 	.get_port_immutable = hns_roce_port_immutable,
diff --git a/drivers/infiniband/hw/hns/hns_roce_restrack.c b/drivers/infiniband/hw/hns/hns_roce_restrack.c
index 259444c..18521a4 100644
--- a/drivers/infiniband/hw/hns/hns_roce_restrack.c
+++ b/drivers/infiniband/hw/hns/hns_roce_restrack.c
@@ -118,3 +118,53 @@  int hns_roce_fill_res_cq_entry(struct sk_buff *msg,
 	kfree(context);
 	return ret;
 }
+
+static int hns_roce_fill_dca_uctx(struct hns_roce_dca_ctx *ctx,
+				  struct sk_buff *msg)
+{
+	unsigned long flags;
+	u64 total, free;
+
+	spin_lock_irqsave(&ctx->pool_lock, flags);
+	total = ctx->total_size;
+	free = ctx->free_size;
+	spin_unlock_irqrestore(&ctx->pool_lock, flags);
+
+	if (rdma_nl_put_driver_u64(msg, "dca-total", total))
+		goto err;
+
+	if (rdma_nl_put_driver_u64(msg, "dca-free", free))
+		goto err;
+
+	return 0;
+
+err:
+	return -EMSGSIZE;
+}
+
+int hns_roce_fill_res_ctx_entry(struct sk_buff *msg, struct ib_ucontext *ctx)
+{
+	struct hns_roce_dev *hr_dev = to_hr_dev(ctx->device);
+	struct hns_roce_ucontext *uctx = to_hr_ucontext(ctx);
+	struct nlattr *table_attr;
+
+	table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);
+	if (!table_attr)
+		goto err;
+
+	if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_DCA_MODE) {
+		if (hns_roce_fill_dca_uctx(&uctx->dca_ctx, msg))
+			goto err_cancel_table;
+	}
+
+	nla_nest_end(msg, table_attr);
+
+	return 0;
+
+err_cancel_table:
+	nla_nest_cancel(msg, table_attr);
+err:
+	return -EMSGSIZE;
+
+	return 0;
+}