From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753455AbaKZXHE (ORCPT ); Wed, 26 Nov 2014 18:07:04 -0500 Received: from terminus.zytor.com ([198.137.202.10]:58064 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751699AbaKZXHA (ORCPT ); Wed, 26 Nov 2014 18:07:00 -0500 Date: Wed, 26 Nov 2014 15:05:48 -0800 From: tip-bot for Jiang Liu Message-ID: Cc: gregkh@linuxfoundation.org, benh@kernel.crashing.org, bp@alien8.de, tony.luck@intel.com, tglx@linutronix.de, jiang.liu@linux.intel.com, rjw@rjwysocki.net, hpa@zytor.com, mingo@kernel.org, rdunlap@infradead.org, konrad.wilk@oracle.com, joro@8bytes.org, linux-kernel@vger.kernel.org, bhelgaas@google.com, yinghai@kernel.org Reply-To: tglx@linutronix.de, tony.luck@intel.com, bp@alien8.de, benh@kernel.crashing.org, gregkh@linuxfoundation.org, yinghai@kernel.org, bhelgaas@google.com, linux-kernel@vger.kernel.org, joro@8bytes.org, konrad.wilk@oracle.com, rdunlap@infradead.org, mingo@kernel.org, hpa@zytor.com, rjw@rjwysocki.net, jiang.liu@linux.intel.com In-Reply-To: <1416894816-23245-2-git-send-email-jiang.liu@linux.intel.com> References: <1416894816-23245-2-git-send-email-jiang.liu@linux.intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/apic] x86, irq: Save destination CPU ID in irq_cfg Git-Commit-ID: 489e71db03c76fa74d570133b51abe02b5192450 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 489e71db03c76fa74d570133b51abe02b5192450 Gitweb: http://git.kernel.org/tip/489e71db03c76fa74d570133b51abe02b5192450 Author: Jiang Liu AuthorDate: Tue, 25 Nov 2014 13:53:10 +0800 Committer: Thomas Gleixner CommitDate: Wed, 26 Nov 2014 18:59:23 +0100 x86, irq: Save destination CPU ID in irq_cfg Cache destination CPU APIC ID into struct irq_cfg when assigning vector for interrupt. Upper layer just needs to read the cached APIC ID instead of calling apic->cpu_mask_to_apicid_and(), it helps to hide APIC driver details from IOAPIC/HPET/MSI drivers.. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Greg Kroah-Hartman Cc: Bjorn Helgaas Cc: Benjamin Herrenschmidt Cc: Rafael J. Wysocki Cc: Randy Dunlap Cc: Yinghai Lu Cc: Borislav Petkov Link: http://lkml.kernel.org/r/1416894816-23245-2-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/hw_irq.h | 1 + arch/x86/kernel/apic/vector.c | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h index 9662290..b988ddf 100644 --- a/arch/x86/include/asm/hw_irq.h +++ b/arch/x86/include/asm/hw_irq.h @@ -116,6 +116,7 @@ struct irq_data; struct irq_cfg { cpumask_var_t domain; cpumask_var_t old_domain; + unsigned int dest_apicid; u8 vector; u8 move_in_progress : 1; #ifdef CONFIG_IRQ_REMAP diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c index 6cedd79..c724ef6 100644 --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -188,6 +188,12 @@ next: } free_cpumask_var(tmp_mask); + if (!err) { + /* cache destination APIC IDs into cfg->dest_apicid */ + err = apic->cpu_mask_to_apicid_and(mask, cfg->domain, + &cfg->dest_apicid); + } + return err; }