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8308133741
____cacheline_aligned_in_smp attribute only makes sure to align a field to a cache line. It does not prevent the linker to use the remaining of the cache line for other variables, causing potential false sharing. Move tcp_memory_allocated into a dedicated cache line. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20250630093540.3052835-4-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
29 lines
813 B
C
29 lines
813 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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#include <linux/cache.h>
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#include <linux/jiffies.h>
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#include <linux/list.h>
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#include <net/aligned_data.h>
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#include <net/hotdata.h>
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#include <net/ip.h>
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#include <net/proto_memory.h>
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struct net_hotdata net_hotdata __cacheline_aligned = {
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.offload_base = LIST_HEAD_INIT(net_hotdata.offload_base),
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.gro_normal_batch = 8,
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.netdev_budget = 300,
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/* Must be at least 2 jiffes to guarantee 1 jiffy timeout */
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.netdev_budget_usecs = 2 * USEC_PER_SEC / HZ,
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.tstamp_prequeue = 1,
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.max_backlog = 1000,
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.dev_tx_weight = 64,
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.dev_rx_weight = 64,
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.sysctl_max_skb_frags = MAX_SKB_FRAGS,
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.sysctl_skb_defer_max = 64,
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.sysctl_mem_pcpu_rsv = SK_MEMORY_PCPU_RESERVE
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};
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EXPORT_SYMBOL(net_hotdata);
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struct net_aligned_data net_aligned_data;
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EXPORT_IPV6_MOD(net_aligned_data);
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