Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752325AbaJ0FUp (ORCPT ); Mon, 27 Oct 2014 01:20:45 -0400 Received: from mga01.intel.com ([192.55.52.88]:12601 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751518AbaJ0FUl (ORCPT ); Mon, 27 Oct 2014 01:20:41 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,862,1389772800"; d="scan'208";a="406497777" From: Jiang Liu To: Benjamin Herrenschmidt , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , "Rafael J. Wysocki" , Bjorn Helgaas , Randy Dunlap , Yinghai Lu , Borislav Petkov , x86@kernel.org, Jiang Liu , Grant Likely , Prarit Bhargava Cc: Konrad Rzeszutek Wilk , Andrew Morton , Tony Luck , Joerg Roedel , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, Sebastian Andrzej Siewior , Ingo Molnar Subject: [Patch v7 09/18] x86, irq: Split out alloc_ioapic_save_registers() Date: Mon, 27 Oct 2014 13:21:39 +0800 Message-Id: <1414387308-27148-10-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1414387308-27148-1-git-send-email-jiang.liu@linux.intel.com> References: <1414387308-27148-1-git-send-email-jiang.liu@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yinghai Lu Split out alloc_ioapic_save_registers() from early_irq_init(), so it could be used for ioapic hotplug later. Signed-off-by: Yinghai Lu Signed-off-by: Jiang Liu Cc: Joerg Roedel Cc: Konrad Rzeszutek Wilk Cc: Sebastian Andrzej Siewior --- arch/x86/kernel/apic/io_apic.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 1183d545da1e..acaee90fc9cc 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -237,6 +237,19 @@ static struct irq_pin_list *alloc_irq_pin_list(int node) return kzalloc_node(sizeof(struct irq_pin_list), GFP_KERNEL, node); } +static void alloc_ioapic_saved_registers(int idx) +{ + size_t size; + + if (ioapics[idx].saved_registers) + return; + + size = sizeof(struct IO_APIC_route_entry) * ioapics[idx].nr_registers; + ioapics[idx].saved_registers = kzalloc(size, GFP_KERNEL); + if (!ioapics[idx].saved_registers) + pr_err("IOAPIC %d: suspend/resume impossible!\n", idx); +} + int __init arch_early_irq_init(void) { struct irq_cfg *cfg; @@ -245,13 +258,8 @@ int __init arch_early_irq_init(void) if (!nr_legacy_irqs()) io_apic_irqs = ~0UL; - for_each_ioapic(i) { - ioapics[i].saved_registers = - kzalloc(sizeof(struct IO_APIC_route_entry) * - ioapics[i].nr_registers, GFP_KERNEL); - if (!ioapics[i].saved_registers) - pr_err("IOAPIC %d: suspend/resume impossible!\n", i); - } + for_each_ioapic(i) + alloc_ioapic_saved_registers(i); /* * For legacy IRQ's, start with assigning irq0 to irq15 to -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/