From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752163AbcGROee (ORCPT ); Mon, 18 Jul 2016 10:34:34 -0400 Received: from mga09.intel.com ([134.134.136.24]:18624 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751844AbcGROXV (ORCPT ); Mon, 18 Jul 2016 10:23:21 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,384,1464678000"; d="scan'208";a="1009027522" From: kan.liang@intel.com To: davem@davemloft.net, linux-kernel@vger.kernel.org, intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org Cc: jeffrey.t.kirsher@intel.com, mingo@redhat.com, peterz@infradead.org, kuznet@ms2.inr.ac.ru, jmorris@namei.org, yoshfuji@linux-ipv6.org, kaber@trash.net, akpm@linux-foundation.org, keescook@chromium.org, viro@zeniv.linux.org.uk, gorcunov@openvz.org, john.stultz@linaro.org, aduyck@mirantis.com, ben@decadent.org.uk, decot@googlers.com, jesse.brandeburg@intel.com, andi@firstfloor.org, Kan Liang Subject: [RFC PATCH 08/30] net/netpolicy: set and remove irq affinity Date: Sun, 17 Jul 2016 23:56:02 -0700 Message-Id: <1468824984-65318-9-git-send-email-kan.liang@intel.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1468824984-65318-1-git-send-email-kan.liang@intel.com> References: <1468824984-65318-1-git-send-email-kan.liang@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kan Liang This patches introduces functions to set and remove irq affinity according to cpu and queue mapping. The functions will not record the previous affinity status. After a set/remove cycles, it will set the affinity on all online cpu with irq balance enabling. Signed-off-by: Kan Liang --- net/core/netpolicy.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/net/core/netpolicy.c b/net/core/netpolicy.c index ff7fc04..c44818d 100644 --- a/net/core/netpolicy.c +++ b/net/core/netpolicy.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include #include @@ -128,6 +129,38 @@ err: return -ENOMEM; } +static void netpolicy_clear_affinity(struct net_device *dev) +{ + struct netpolicy_sys_info *s_info = &dev->netpolicy->sys_info; + u32 i; + + for (i = 0; i < s_info->avail_rx_num; i++) { + irq_clear_status_flags(s_info->rx[i].irq, IRQ_NO_BALANCING); + irq_set_affinity_hint(s_info->rx[i].irq, cpu_online_mask); + } + + for (i = 0; i < s_info->avail_tx_num; i++) { + irq_clear_status_flags(s_info->tx[i].irq, IRQ_NO_BALANCING); + irq_set_affinity_hint(s_info->tx[i].irq, cpu_online_mask); + } +} + +static void netpolicy_set_affinity(struct net_device *dev) +{ + struct netpolicy_sys_info *s_info = &dev->netpolicy->sys_info; + u32 i; + + for (i = 0; i < s_info->avail_rx_num; i++) { + irq_set_status_flags(s_info->rx[i].irq, IRQ_NO_BALANCING); + irq_set_affinity_hint(s_info->rx[i].irq, cpumask_of(s_info->rx[i].cpu)); + } + + for (i = 0; i < s_info->avail_tx_num; i++) { + irq_set_status_flags(s_info->tx[i].irq, IRQ_NO_BALANCING); + irq_set_affinity_hint(s_info->tx[i].irq, cpumask_of(s_info->tx[i].cpu)); + } +} + const char *policy_name[NET_POLICY_MAX] = { "NONE" }; -- 2.5.5