72 lines
2.2 KiB
Diff
72 lines
2.2 KiB
Diff
|
From 3c59e2ada00a20ff8aec3fe13920cf155a63740c Mon Sep 17 00:00:00 2001
|
||
|
|
From: Weili Qian <qianweili@huawei.com>
|
||
|
|
Date: Sat, 23 Jul 2022 10:49:01 +0800
|
||
|
|
Subject: [PATCH 175/183] drv/qm: add unlikely() for branch prefetch
|
||
|
|
|
||
|
|
Add unlikely() on the route of doing request to improve
|
||
|
|
branch prefetch success rate.
|
||
|
|
|
||
|
|
Signed-off-by: Weili Qian <qianweili@huawei.com>
|
||
|
|
---
|
||
|
|
drv/hisi_qm_udrv.c | 14 +++++++-------
|
||
|
|
1 file changed, 7 insertions(+), 7 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/drv/hisi_qm_udrv.c b/drv/hisi_qm_udrv.c
|
||
|
|
index 39c99d1..7f26e52 100644
|
||
|
|
--- a/drv/hisi_qm_udrv.c
|
||
|
|
+++ b/drv/hisi_qm_udrv.c
|
||
|
|
@@ -442,12 +442,12 @@ int hisi_qm_send(handle_t h_qp, const void *req, __u16 expect, __u16 *count)
|
||
|
|
__u16 free_num, send_num;
|
||
|
|
__u16 tail;
|
||
|
|
|
||
|
|
- if (!qp || !req || !count)
|
||
|
|
+ if (unlikely(!qp || !req || !count))
|
||
|
|
return -WD_EINVAL;
|
||
|
|
|
||
|
|
q_info = &qp->q_info;
|
||
|
|
|
||
|
|
- if (wd_ioread32(q_info->ds_tx_base) == 1) {
|
||
|
|
+ if (unlikely(wd_ioread32(q_info->ds_tx_base) == 1)) {
|
||
|
|
WD_ERR("wd queue hw error happened before qm send!\n");
|
||
|
|
return -WD_HW_EACCESS;
|
||
|
|
}
|
||
|
|
@@ -488,7 +488,7 @@ static int hisi_qm_recv_single(struct hisi_qm_queue_info *q_info, void *resp)
|
||
|
|
|
||
|
|
if (q_info->cqc_phase == CQE_PHASE(cqe)) {
|
||
|
|
j = CQE_SQ_HEAD_INDEX(cqe);
|
||
|
|
- if (j >= QM_Q_DEPTH) {
|
||
|
|
+ if (unlikely(j >= QM_Q_DEPTH)) {
|
||
|
|
pthread_spin_unlock(&q_info->rv_lock);
|
||
|
|
WD_DEV_ERR(qp->h_ctx, "CQE_SQ_HEAD_INDEX(%u) error!\n", j);
|
||
|
|
return -WD_EIO;
|
||
|
|
@@ -526,14 +526,14 @@ int hisi_qm_recv(handle_t h_qp, void *resp, __u16 expect, __u16 *count)
|
||
|
|
int recv_num = 0;
|
||
|
|
int i, ret, offset;
|
||
|
|
|
||
|
|
- if (!resp || !qp || !count)
|
||
|
|
+ if (unlikely(!resp || !qp || !count))
|
||
|
|
return -WD_EINVAL;
|
||
|
|
|
||
|
|
- if (!expect)
|
||
|
|
+ if (unlikely(!expect))
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
q_info = &qp->q_info;
|
||
|
|
- if (wd_ioread32(q_info->ds_rx_base) == 1) {
|
||
|
|
+ if (unlikely(wd_ioread32(q_info->ds_rx_base) == 1)) {
|
||
|
|
WD_DEV_ERR(qp->h_ctx, "wd queue hw error happened before qm receive!\n");
|
||
|
|
return -WD_HW_EACCESS;
|
||
|
|
}
|
||
|
|
@@ -547,7 +547,7 @@ int hisi_qm_recv(handle_t h_qp, void *resp, __u16 expect, __u16 *count)
|
||
|
|
}
|
||
|
|
|
||
|
|
*count = recv_num++;
|
||
|
|
- if (wd_ioread32(q_info->ds_rx_base) == 1) {
|
||
|
|
+ if (unlikely(wd_ioread32(q_info->ds_rx_base) == 1)) {
|
||
|
|
WD_DEV_ERR(qp->h_ctx, "wd queue hw error happened in qm receive!\n");
|
||
|
|
return -WD_HW_EACCESS;
|
||
|
|
}
|
||
|
|
--
|
||
|
|
2.27.0
|
||
|
|
|