Commit 9116b138 authored by Chenghai Huang's avatar Chenghai Huang Committed by JangShui Yang
Browse files

crypto: hisilicon/debugfs - Resolve the problem of applying for redundant space in sq dump 

maillist inclusion
category: cleanup
bugzilla: https://gitee.com/openeuler/kernel/issues/I9GMIW
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev.git/commit/?id=745a11899a8c



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

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: default avatarChenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarJangShui Yang <yangjiangshui@h-partners.com>
parent 7ad650cb

drivers/crypto/hisilicon/debugfs.c

+5 −6
Original line number Diff line number Diff line
@@ -311,7 +311,7 @@ static int q_dump_param_parse(struct hisi_qm *qm, char *s, 
static int qm_sq_dump(struct hisi_qm *qm, char *s, char *name)

{

	u16 sq_depth = qm->qp_array->cq_depth;

	void *sqe, *sqe_curr;

	void *sqe;

	struct hisi_qp *qp;

	u32 qp_id, sqe_id;

	int ret;
@@ -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);