Thread (21 messages) 21 messages, 2 authors, 2017-03-31
STALE3344d REVIEWED: 1 (0M)
Revisions (4)
  1. v1 [diff vs current]
  2. v2 current
  3. v3 [diff vs current]
  4. v4 [diff vs current]

[PATCH V2 net-next 04/18] net: hns: Remove redundant memset during buffer release

From: Salil Mehta <hidden>
Date: 2017-03-31 11:21:53
Also in: lkml
Subsystem: hisilicon network subsystem driver, networking drivers, the rest · Maintainers: Jian Shen, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

From: lipeng <redacted>

Because all members of desc_cb is assigned when xmit one package, so it
can delete in hnae_free_buffer, as follows:
        - "dma, priv, length, type" are assigned in fill_v2_desc.
        - "page_offset, reuse_flag, buf" are not used in tx direction.

Signed-off-by: lipeng <redacted>
Signed-off-by: Weiwei Deng <redacted>
Reviewed-by: Yisen Zhuang <redacted>
Signed-off-by: Salil Mehta <redacted>
---
 drivers/net/ethernet/hisilicon/hns/hnae.c | 1 -
 1 file changed, 1 deletion(-)
diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.c b/drivers/net/ethernet/hisilicon/hns/hnae.c
index b6ed818..78af663 100644
--- a/drivers/net/ethernet/hisilicon/hns/hnae.c
+++ b/drivers/net/ethernet/hisilicon/hns/hnae.c
@@ -61,7 +61,6 @@ static void hnae_free_buffer(struct hnae_ring *ring, struct hnae_desc_cb *cb)
 		dev_kfree_skb_any((struct sk_buff *)cb->priv);
 	else if (unlikely(is_rx_ring(ring)))
 		put_page((struct page *)cb->priv);
-	memset(cb, 0, sizeof(*cb));
 }
 
 static int hnae_map_buffer(struct hnae_ring *ring, struct hnae_desc_cb *cb)
-- 
2.7.4
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