From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755020AbbDXPpP (ORCPT ); Fri, 24 Apr 2015 11:45:15 -0400 Received: from terminus.zytor.com ([198.137.202.10]:43650 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752611AbbDXPpK (ORCPT ); Fri, 24 Apr 2015 11:45:10 -0400 Date: Fri, 24 Apr 2015 08:43:31 -0700 From: tip-bot for Jiang Liu Message-ID: Cc: gregkh@linuxfoundation.org, mingo@kernel.org, linux-kernel@vger.kernel.org, hpa@zytor.com, joro@8bytes.org, linux@eikelenboom.it, sivanich@sgi.com, tglx@linutronix.de, jiang.liu@linux.intel.com, benh@kernel.crashing.org, yinghai@kernel.org, bhelgaas@google.com, david.vrabel@citrix.com, konrad.wilk@oracle.com, rjw@rjwysocki.net, tony.luck@intel.com, bp@alien8.de, david.a.cohen@linux.intel.com, rdunlap@infradead.org Reply-To: mingo@kernel.org, linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, david.vrabel@citrix.com, bhelgaas@google.com, yinghai@kernel.org, benh@kernel.crashing.org, jiang.liu@linux.intel.com, tglx@linutronix.de, sivanich@sgi.com, linux@eikelenboom.it, joro@8bytes.org, hpa@zytor.com, tony.luck@intel.com, rjw@rjwysocki.net, konrad.wilk@oracle.com, rdunlap@infradead.org, david.a.cohen@linux.intel.com, bp@alien8.de In-Reply-To: <1428905519-23704-2-git-send-email-jiang.liu@linux.intel.com> References: <1428905519-23704-2-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: 5f0052f9522b84269e1b3b435a806f873d992702 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: 5f0052f9522b84269e1b3b435a806f873d992702 Gitweb: http://git.kernel.org/tip/5f0052f9522b84269e1b3b435a806f873d992702 Author: Jiang Liu AuthorDate: Mon, 13 Apr 2015 14:11:23 +0800 Committer: Thomas Gleixner CommitDate: Fri, 24 Apr 2015 15:36:47 +0200 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: David Cohen Cc: Sander Eikelenboom Cc: David Vrabel 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 Cc: Dimitri Sivanich Link: http://lkml.kernel.org/r/1428905519-23704-2-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 e9571dd..cda9695 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; }