From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Doug Berger <opendmb@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
"David S . Miller" <davem@davemloft.net>,
Sasha Levin <sashal@kernel.org>,
netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.6 72/79] net: bcmgenet: suppress warnings on failed Rx SKB allocations
Date: Thu, 30 Apr 2020 09:50:36 -0400 [thread overview]
Message-ID: <20200430135043.19851-72-sashal@kernel.org> (raw)
In-Reply-To: <20200430135043.19851-1-sashal@kernel.org>
From: Doug Berger <opendmb@gmail.com>
[ Upstream commit ecaeceb8a8a145d93c7e136f170238229165348f ]
The driver is designed to drop Rx packets and reclaim the buffers
when an allocation fails, and the network interface needs to safely
handle this packet loss. Therefore, an allocation failure of Rx
SKBs is relatively benign.
However, the output of the warning message occurs with a high
scheduling priority that can cause excessive jitter/latency for
other high priority processing.
This commit suppresses the warning messages to prevent scheduling
problems while retaining the failure count in the statistics of
the network interface.
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/broadcom/genet/bcmgenet.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index b7c0c20e13258..5fd1a9dfcfff3 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -1625,7 +1625,8 @@ static struct sk_buff *bcmgenet_rx_refill(struct bcmgenet_priv *priv,
dma_addr_t mapping;
/* Allocate a new Rx skb */
- skb = netdev_alloc_skb(priv->dev, priv->rx_buf_len + SKB_ALIGNMENT);
+ skb = __netdev_alloc_skb(priv->dev, priv->rx_buf_len + SKB_ALIGNMENT,
+ GFP_ATOMIC | __GFP_NOWARN);
if (!skb) {
priv->mib.alloc_rx_buff_failed++;
netif_err(priv, rx_err, priv->dev,
--
2.20.1
next prev parent reply other threads:[~2020-04-30 14:08 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200430135043.19851-1-sashal@kernel.org>
2020-04-30 13:49 ` [PATCH AUTOSEL 5.6 14/79] SUNRPC/cache: Fix unsafe traverse caused double-free in cache_purge Sasha Levin
2020-04-30 13:49 ` [PATCH AUTOSEL 5.6 35/79] svcrdma: Fix trace point use-after-free race Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 40/79] wimax/i2400m: Fix potential urb refcnt leak Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 41/79] net: stmmac: fix enabling socfpga's ptp_ref_clock Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 42/79] net: stmmac: Fix sub-second increment Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 43/79] netfilter: nat: fix error handling upon registering inet hook Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 48/79] net/mlx5: Fix failing fw tracer allocation on s390 Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 49/79] net/mlx5e: Don't trigger IRQ multiple times on XSK wakeup to avoid WQ overruns Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 50/79] net/mlx5e: Get the latest values from counters in switchdev mode Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 51/79] cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 52/79] bpf: Forbid XADD on spilled pointers for unprivileged users Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 53/79] bpf: Fix handling of XADD on BTF memory Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 54/79] bpf, x86: Fix encoding for lower 8-bit registers in BPF_STX BPF_B Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 55/79] iwlwifi: actually check allocated conf_tlv pointer Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 67/79] net: phy: bcm84881: clear settings on link down Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 69/79] mac80211: sta_info: Add lockdep condition for RCU list usage Sasha Levin
2020-04-30 13:50 ` Sasha Levin [this message]
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 73/79] net: systemport: suppress warnings on failed Rx SKB allocations Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 74/79] bpf, x86_32: Fix incorrect encoding in BPF_LDX zero-extension Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 75/79] bpf, x86_32: Fix clobbering of dst for BPF_JSET Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 76/79] bpf, x86_32: Fix logic error in BPF_LDX zero-extension Sasha Levin
2020-04-30 13:50 ` [PATCH AUTOSEL 5.6 77/79] bpf: Propagate expected_attach_type when verifying freplace programs Sasha Levin
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