From 40c7b406829bc1250d93af527d70836e02c1fbac Mon Sep 17 00:00:00 2001
From: Junxian Huang <huangjunxian6@hisilicon.com>
Date: Thu, 24 Apr 2025 20:32:12 +0800
Subject: [PATCH 58/62] libhns: Add debug log for lock-free mode

mainline inclusion
from mainline-v56.0-65
commit fb96940fcf6f96185d407d57bcaf775ccf8f1762
category: cheanup
bugzilla: https://gitee.com/src-openeuler/rdma-core/issues/IC3X57
CVE: NA

Reference:
https://github.com/linux-rdma/rdma-core/pull/1599/commits/fb96940fcf6f96185d...

---------------------------------------------------------------------

Currently there is no way to observe whether the lock-free mode is
configured from the driver's perspective. Add debug log for this.

Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Signed-off-by: Xinghai Cen <cenxinghai@h-partners.com>
---
 providers/hns/hns_roce_u_verbs.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/providers/hns/hns_roce_u_verbs.c b/providers/hns/hns_roce_u_verbs.c
index 5fe169e..3efc2f4 100644
--- a/providers/hns/hns_roce_u_verbs.c
+++ b/providers/hns/hns_roce_u_verbs.c
@@ -182,6 +182,7 @@ err:
 struct ibv_pd *hns_roce_u_alloc_pad(struct ibv_context *context,
 				    struct ibv_parent_domain_init_attr *attr)
 {
+	struct hns_roce_pd *protection_domain;
 	struct hns_roce_pad *pad;
 
 	if (ibv_check_alloc_parent_domain(attr))
@@ -198,12 +199,16 @@ struct ibv_pd *hns_roce_u_alloc_pad(struct ibv_context *context,
 		return NULL;
 	}
 
+	protection_domain = to_hr_pd(attr->pd);
 	if (attr->td) {
 		pad->td = to_hr_td(attr->td);
 		atomic_fetch_add(&pad->td->refcount, 1);
+		verbs_debug(verbs_get_ctx(context),
+			    "set PAD(0x%x) to lock-free mode.\n",
+			    protection_domain->pdn);
 	}
 
-	pad->pd.protection_domain = to_hr_pd(attr->pd);
+	pad->pd.protection_domain = protection_domain;
 	atomic_fetch_add(&pad->pd.protection_domain->refcount, 1);
 
 	atomic_init(&pad->pd.refcount, 1);
-- 
2.25.1