From: Sasha Levin <sashal@kernel•org>
To: linux-kernel@vger•kernel.org, stable@vger•kernel.org
Cc: Thierry Reding <treding@nvidia•com>,
"David S . Miller" <davem@davemloft•net>,
Sasha Levin <sashal@kernel•org>,
netdev@vger•kernel.org
Subject: [PATCH AUTOSEL 5.3 61/71] net: stmmac: Fix page pool size
Date: Tue, 1 Oct 2019 12:39:11 -0400 [thread overview]
Message-ID: <20191001163922.14735-61-sashal@kernel.org> (raw)
In-Reply-To: <20191001163922.14735-1-sashal@kernel.org>
From: Thierry Reding <treding@nvidia•com>
[ Upstream commit 4f28bd956e081fc018fe9b41ffa31573f17bfb61 ]
The size of individual pages in the page pool in given by an order. The
order is the binary logarithm of the number of pages that make up one of
the pages in the pool. However, the driver currently passes the number
of pages rather than the order, so it ends up wasting quite a bit of
memory.
Fix this by taking the binary logarithm and passing that in the order
field.
Fixes: 2af6106ae949 ("net: stmmac: Introducing support for Page Pool")
Signed-off-by: Thierry Reding <treding@nvidia•com>
Signed-off-by: David S. Miller <davem@davemloft•net>
Signed-off-by: Sasha Levin <sashal@kernel•org>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index b19ab09cb18f7..5c4408bdc843a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1532,13 +1532,15 @@ static int alloc_dma_rx_desc_resources(struct stmmac_priv *priv)
for (queue = 0; queue < rx_count; queue++) {
struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
struct page_pool_params pp_params = { 0 };
+ unsigned int num_pages;
rx_q->queue_index = queue;
rx_q->priv_data = priv;
pp_params.flags = PP_FLAG_DMA_MAP;
pp_params.pool_size = DMA_RX_SIZE;
- pp_params.order = DIV_ROUND_UP(priv->dma_buf_sz, PAGE_SIZE);
+ num_pages = DIV_ROUND_UP(priv->dma_buf_sz, PAGE_SIZE);
+ pp_params.order = ilog2(num_pages);
pp_params.nid = dev_to_node(priv->device);
pp_params.dev = priv->device;
pp_params.dma_dir = DMA_FROM_DEVICE;
--
2.20.1
next prev parent reply other threads:[~2019-10-01 16:59 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191001163922.14735-1-sashal@kernel.org>
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 05/71] xprtrdma: Toggle XPRT_CONGESTED in xprtrdma's slot methods Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 06/71] xprtrdma: Send Queue size grows after a reconnect Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 07/71] 9p: Transport error uninitialized Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 16/71] SUNRPC: RPC level errors should always set task->tk_rpc_status Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 18/71] netfilter: nf_tables: allow lookups in dynamic sets Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 23/71] SUNRPC: Don't try to parse incomplete RPC messages Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 24/71] net/sched: act_sample: don't push mac header on ip6gre ingress Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 26/71] cdc_ncm: fix divide-by-zero caused by invalid wMaxPacketSize Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 27/71] usbnet: ignore endpoints with " Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 28/71] net/phy: fix DP83865 10 Mbps HDX loopback disable function Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 29/71] net_sched: add max len check for TCA_KIND Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 30/71] selftests/seccomp: fix build on older kernels Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 37/71] net/mlx5e: Fix matching on tunnel addresses type Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 38/71] net/mlx5e: Fix traffic duplication in ethtool steering Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 42/71] arcnet: provide a buffer big enough to actually receive packets Sasha Levin
2019-10-01 16:38 ` [PATCH AUTOSEL 5.3 44/71] ppp: Fix memory leak in ppp_write Sasha Levin
2019-10-01 16:39 ` [PATCH AUTOSEL 5.3 50/71] selftests/bpf: adjust strobemeta loop to satisfy latest clang Sasha Levin
2019-10-01 16:39 ` [PATCH AUTOSEL 5.3 52/71] libbpf: fix false uninitialized variable warning Sasha Levin
2019-10-01 16:39 ` [PATCH AUTOSEL 5.3 55/71] bpf: Fix bpf_event_output re-entry issue Sasha Levin
2019-10-01 16:39 ` [PATCH AUTOSEL 5.3 56/71] macsec: drop skb sk before calling gro_cells_receive Sasha Levin
2019-10-01 16:39 ` [PATCH AUTOSEL 5.3 57/71] net: dsa: microchip: Always set regmap stride to 1 Sasha Levin
2019-10-01 16:39 ` [PATCH AUTOSEL 5.3 60/71] nfp: flower: fix memory leak in nfp_flower_spawn_vnic_reprs Sasha Levin
2019-10-01 16:39 ` Sasha Levin [this message]
2019-10-01 16:39 ` [PATCH AUTOSEL 5.3 62/71] net: phy: micrel: add Asym Pause workaround for KSZ9021 Sasha Levin
2019-10-01 16:39 ` [PATCH AUTOSEL 5.3 63/71] mlxsw: spectrum_flower: Fail in case user specifies multiple mirror actions Sasha Levin
2019-10-01 16:39 ` [PATCH AUTOSEL 5.3 64/71] vrf: Do not attempt to create IPv6 mcast rule if IPv6 is disabled Sasha Levin
2019-10-01 16:39 ` [PATCH AUTOSEL 5.3 65/71] nfp: flower: prevent memory leak in nfp_flower_spawn_phy_reprs Sasha Levin
2019-10-01 16:39 ` [PATCH AUTOSEL 5.3 66/71] nfp: abm: fix memory leak in nfp_abm_u32_knode_replace Sasha Levin
2019-10-01 16:39 ` [PATCH AUTOSEL 5.3 69/71] usbnet: sanity checking of packet sizes and device mtu Sasha Levin
2019-10-01 16:39 ` [PATCH AUTOSEL 5.3 70/71] sch_netem: fix a divide by zero in tabledist() Sasha Levin
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