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Message-ID: <20241029204541.1301203-6-almasrymina@google.com>
Date: Tue, 29 Oct 2024 20:45:39 +0000
From: Mina Almasry <almasrymina@...gle.com>
To: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-kselftest@...r.kernel.org
Cc: Mina Almasry <almasrymina@...gle.com>, "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Simon Horman <horms@...nel.org>, Jesper Dangaard Brouer <hawk@...nel.org>,
Ilias Apalodimas <ilias.apalodimas@...aro.org>, Shuah Khan <shuah@...nel.org>
Subject: [PATCH net-next v1 5/7] netmem: add netmem_prefetch
prefect(page) is a common thing to be called from drivers. Add
netmem_prefetch that can be called on generic netmem. Skips the prefetch
for net_iovs.
Signed-off-by: Mina Almasry <almasrymina@...gle.com>
---
include/net/netmem.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/include/net/netmem.h b/include/net/netmem.h
index 8a6e20be4b9d..923c47147aa8 100644
--- a/include/net/netmem.h
+++ b/include/net/netmem.h
@@ -171,4 +171,11 @@ static inline unsigned long netmem_get_dma_addr(netmem_ref netmem)
return __netmem_clear_lsb(netmem)->dma_addr;
}
+static inline void netmem_prefetch(netmem_ref netmem)
+{
+ if (netmem_is_net_iov(netmem))
+ return;
+
+ prefetch(netmem_to_page(netmem));
+}
#endif /* _NET_NETMEM_H */
--
2.47.0.163.g1226f6d8fa-goog
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