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From: Chenghai Huang <huangchenghai2@huawei.com>
To: <herbert@gondor.apana.org.au>, <davem@davemloft.net>
CC: <linux-kernel@vger.kernel.org>, <linux-crypto@vger.kernel.org>,
	<fanghao11@huawei.com>, <liulongfang@huawei.com>, <shenyang39@huawei.com>,
	<songzhiqi1@huawei.com>, <qianweili@huawei.com>, <liushangbin@hisilicon.com>,
	<linwenkai6@hisilicon.com>, <taoqi10@huawei.com>, <wangzhou1@hisilicon.com>,
	<huangchenghai2@huawei.com>
Subject: [PATCH 8/9] crypto: hisilicon/debugfs - Resolve the problem of applying for redundant space in sq dump
Date: Wed, 3 Apr 2024 18:01:01 +0800
Message-ID: <20240403100102.2735306-9-huangchenghai2@huawei.com>
In-Reply-To: <20240403100102.2735306-1-huangchenghai2@huawei.com>
References: <20240403100102.2735306-1-huangchenghai2@huawei.com>
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When dumping SQ, only the corresponding ID's SQE needs to be
dumped, and there is no need to apply for the entire SQE
memory. This is because excessive dump operations can lead to
memory resource waste.

Therefor apply for the space corresponding to sqe_id separately
to avoid space waste.

Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
---
 drivers/crypto/hisilicon/debugfs.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/crypto/hisilicon/debugfs.c b/drivers/crypto/hisilicon/debugfs.c
index e9fa42381242..8e259ed4aecd 100644
--- a/drivers/crypto/hisilicon/debugfs.c
+++ b/drivers/crypto/hisilicon/debugfs.c
@@ -320,17 +320,16 @@ static int qm_sq_dump(struct hisi_qm *qm, char *s, char *name)
 	if (ret)
 		return ret;
 
-	sqe = kzalloc(qm->sqe_size * sq_depth, GFP_KERNEL);
+	sqe = kzalloc(qm->sqe_size, GFP_KERNEL);
 	if (!sqe)
 		return -ENOMEM;
 
 	qp = &qm->qp_array[qp_id];
-	memcpy(sqe, qp->sqe, qm->sqe_size * sq_depth);
-	sqe_curr = sqe + (u32)(sqe_id * qm->sqe_size);
-	memset(sqe_curr + qm->debug.sqe_mask_offset, QM_SQE_ADDR_MASK,
+	memcpy(sqe, qp->sqe + sqe_id * qm->sqe_size, qm->sqe_size);
+	memset(sqe + qm->debug.sqe_mask_offset, QM_SQE_ADDR_MASK,
 	       qm->debug.sqe_mask_len);
 
-	dump_show(qm, sqe_curr, qm->sqe_size, name);
+	dump_show(qm, sqe, qm->sqe_size, name);
 
 	kfree(sqe);
 
-- 
2.30.0