2021-06-09 18:13:14

by Matteo Croce

Subject: [PATCH net-next] stmmac: prefetch right address

From: Matteo Croce <[email protected]>

To support XDP, a headroom is prepended to the packet data.
Consider this offset when doing a prefetch.

Fixes: da5ec7f22a0f ("net: stmmac: refactor stmmac_init_rx_buffers for stmmac_reinit_rx_buffers")
Signed-off-by: Matteo Croce <[email protected]>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 0a266fa0af7e..30b411762a9c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -5129,7 +5129,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)

/* Buffer is good. Go on. */

- prefetch(page_address(buf->page));
+ prefetch(page_address(buf->page) + buf->page_offset);
if (buf->sec_page)
prefetch(page_address(buf->sec_page));

--
2.31.1

2021-06-09 22:52:07

by patchwork-bot+netdevbpf

Subject: Re: [PATCH net-next] stmmac: prefetch right address

Hello:

This patch was applied to netdev/net-next.git (refs/heads/master):

On Wed, 9 Jun 2021 19:23:03 +0200 you wrote:
> From: Matteo Croce <[email protected]>
>
> To support XDP, a headroom is prepended to the packet data.
> Consider this offset when doing a prefetch.
>
> Fixes: da5ec7f22a0f ("net: stmmac: refactor stmmac_init_rx_buffers for stmmac_reinit_rx_buffers")
> Signed-off-by: Matteo Croce <[email protected]>
>
> [...]

Here is the summary with links:
- [net-next] stmmac: prefetch right address
https://git.kernel.org/netdev/net-next/c/4744bf072b46

You are awesome, thank you!
--
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