From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.3 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9EC1BC31E50 for ; Fri, 14 Jun 2019 23:22:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6BDB020644 for ; Fri, 14 Jun 2019 23:22:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="FAvIe3Cr" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725999AbfFNXW2 (ORCPT ); Fri, 14 Jun 2019 19:22:28 -0400 Received: from mail-ot1-f73.google.com ([209.85.210.73]:39145 "EHLO mail-ot1-f73.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725809AbfFNXW2 (ORCPT ); Fri, 14 Jun 2019 19:22:28 -0400 Received: by mail-ot1-f73.google.com with SMTP id x27so1849408ote.6 for ; Fri, 14 Jun 2019 16:22:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=1G/V6xb7iP/IeBqnKStIfAVjteGJ7Atgu2Aw8zY6rzU=; b=FAvIe3CrkbCNPSsFFhqpovJU5n7e0vqat/uuUhKjvAW4WUHft08DvyN665Z5ChTIQL nX20wHBjTFsNVYRla12j8JK2tQD6nXmvWlXqj6MvxK4Oc7/hpT9YX6zeim0BL3Qn3367 mdwToy6/f9zsPKZNk/QBnknYLROckMRqMG2PIayv/8lAYOKUXoSGFgJuZWE1EjWfQDlv KJK9vEoTcO2N6ybScJ8qNSelo06kbBnJVcxgF+lD8SPJztAb/jwnOKZtGr7NRNr/oTza ppfMv9Y9Fa6csQSn7ePvp4gZoeXWsh8ZetmSU9XnRmhMFZl9/6V5ZxJ2/i5yJnfzXlXL 99TQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=1G/V6xb7iP/IeBqnKStIfAVjteGJ7Atgu2Aw8zY6rzU=; b=lUmp98AgUUTL/wLH5LOb5fCwK5rEOs6zwE5Ec9g2kj7dnFwcvODWPiv9yv8YnVtw3y K7GCf84NXQIxw4DENliFObMxOKWOZmWV9WWxHm02mVLfP5PYtmdBHZbyOW4NuRUVtUym /lw6+gY/3b/HJIORt5hwWDPcgu+4DTIgPBLIEGrsQkpkVVGZi/VAQI7UZZyVFjyJxmNT fib6ycQag2ykckFxUHa42quFVU/n24sLJ3yY0EDm6cxLYcjI4u9Jie87f+4EChYDr/VK d1ZPVGVmBA4zPMwKYLwQPDQKC02mCbE/K3HNowxnjCSwyNWWyB8g6n6WL5IAAPiUsgSa L1Cg== X-Gm-Message-State: APjAAAXBDlSfAfoRTxa7NPgn5RhSwJVhOTeiw1sQizpxSGnjTSjtPaqz OvKZFUux2qQbGDBAi0omV5Pl6maluTKRyg== X-Google-Smtp-Source: APXvYqzqDfj6XB+ulImYax/jsnWN/HVZe4jDfD4hUKt4fXBQ8LP1oRD0+YFPrjEudM0+VQmLwkXWMcXO5GNmzQ== X-Received: by 2002:aca:51ce:: with SMTP id f197mr3504523oib.33.1560554547167; Fri, 14 Jun 2019 16:22:27 -0700 (PDT) Date: Fri, 14 Jun 2019 16:22:17 -0700 Message-Id: <20190614232221.248392-1-edumazet@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.22.0.410.gd8fdbe21b5-goog Subject: [PATCH net 0/4] tcp: add three static keys From: Eric Dumazet To: "David S . Miller" Cc: netdev , Eric Dumazet , Willem de Bruijn , Feng Tang , Eric Dumazet Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Recent addition of per TCP socket rx/tx cache brought regressions for some workloads, as reported by Feng Tang. It seems better to make them opt-in, before we adopt better heuristics. The last patch adds high_order_alloc_disable sysctl to ask TCP sendmsg() to exclusively use order-0 allocations, as mm layer has specific optimizations. Eric Dumazet (4): sysctl: define proc_do_static_key() tcp: add tcp_rx_skb_cache sysctl tcp: add tcp_tx_skb_cache sysctl net: add high_order_alloc_disable sysctl/static key Documentation/networking/ip-sysctl.txt | 8 +++++ include/linux/bpf.h | 1 - include/linux/sysctl.h | 3 ++ include/net/sock.h | 12 ++++--- kernel/bpf/core.c | 1 - kernel/sysctl.c | 44 ++++++++++++++------------ net/core/sock.c | 4 ++- net/core/sysctl_net_core.c | 7 ++++ net/ipv4/sysctl_net_ipv4.c | 17 ++++++++++ 9 files changed, 68 insertions(+), 29 deletions(-) -- 2.22.0.410.gd8fdbe21b5-goog