All of lore.kernel.org
 help / color / mirror / Atom feed
From: Matteo Croce <mcroce@linux.microsoft.com>
To: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
	Ong Boon Leong <boon.leong.ong@intel.com>,
	Giuseppe Cavallaro <peppe.cavallaro@st.com>,
	Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Jose Abreu <joabreu@synopsys.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Emil Renner Berthing <kernel@esmil.dk>
Subject: [PATCH net-next] stmmac: prefetch right address
Date: Wed,  9 Jun 2021 19:23:03 +0200	[thread overview]
Message-ID: <20210609172303.49529-1-mcroce@linux.microsoft.com> (raw)

From: Matteo Croce <mcroce@microsoft.com>

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 <mcroce@microsoft.com>
---
 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


             reply	other threads:[~2021-06-09 17:23 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-09 17:23 Matteo Croce [this message]
2021-06-09 22:50 ` [PATCH net-next] stmmac: prefetch right address patchwork-bot+netdevbpf

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210609172303.49529-1-mcroce@linux.microsoft.com \
    --to=mcroce@linux.microsoft.com \
    --cc=alexandre.torgue@foss.st.com \
    --cc=boon.leong.ong@intel.com \
    --cc=davem@davemloft.net \
    --cc=joabreu@synopsys.com \
    --cc=kernel@esmil.dk \
    --cc=kuba@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=peppe.cavallaro@st.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.