netdev - [PATCH net-next 0/5] net: use less storage for most sysctl

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Date:   Thu, 25 Mar 2021 11:08:12 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net-next 0/5] net: use less storage for most sysctl

From: Eric Dumazet <edumazet@...gle.com>

This patch series adds a new sysctl type, to allow using u8 instead of
"int" or "long int" types.

Then we convert mosts sysctls found in struct netns_ipv4
to shrink it by three cache lines.

Eric Dumazet (5):
  sysctl: add proc_dou8vec_minmax()
  ipv4: shrink netns_ipv4 with sysctl conversions
  ipv4: convert ip_forward_update_priority sysctl to u8
  inet: convert tcp_early_demux and udp_early_demux to u8
  tcp: convert elligible sysctls to u8

 fs/proc/proc_sysctl.c      |   6 ++
 include/linux/sysctl.h     |   2 +
 include/net/netns/ipv4.h   | 106 +++++++++----------
 kernel/sysctl.c            |  65 ++++++++++++
 net/ipv4/sysctl_net_ipv4.c | 212 ++++++++++++++++++-------------------
 5 files changed, 232 insertions(+), 159 deletions(-)

-- 
2.31.0.291.g576ba9dcdaf-goog