From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752791AbaEAXTB (ORCPT ); Thu, 1 May 2014 19:19:01 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:29824 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752695AbaEAXS5 (ORCPT ); Thu, 1 May 2014 19:18:57 -0400 From: Yinghai Lu To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Tony Luck Cc: linux-kernel@vger.kernel.org, Yinghai Lu Subject: [PATCH 0/8] irq: core changes for x86 ioapic hotplug Date: Thu, 1 May 2014 16:18:14 -0700 Message-Id: <1398986302-30455-1-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.8.4.5 X-Source-IP: ucsinet22.oracle.com [156.151.31.94] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, These patches are core changes for x86 ioapic hotplug support. First part for kill old irq_reserve_irqs: During reviewing ioapic hotplug patchset, Thomas pointed out that should not extend irq_reserve_irq for that purpose as that is not actually reserve. Neet to clean up old irq_reserve_irq before introduce reserve/alloc_reserved method for ioapic hotplug. So here patchset that kill irq_reserve_irq that actually set allocated_irqs. First remove irq_reserve_irqs for x86, and remove irq_reserve_irq for sh. Then in set_irq_chip use irq_alloc_desc instead of irq_reserve_irq. Next will mark bits in allocated_irqs early for init irqs in !SPARSE_IRQ Second parts are new reserve/alloc_reserved functions: It will introduce reserved_irqs bit maps to track reserved irqs. New irq_alloc_reserved_desc() will only allocate desc when that irq is reserved. Thanks Yinghai -v2: add new reserve/alloc_reserved sets. Yinghai Lu (8): x86, irq: Remove not needed irq_reserve_irqs calling sh, irq: Remove irq_reserve_irq calling irq: Use irq_alloc_desc_at instead of irq_reserve_irq s390: Mark bits in allocated_irqs in general code irq: Kill irq_reserve_irq/irq_reserve_irqs irq: Add new reserved_irqs clear/mark functions irq: Add irq_alloc_reserved_desc() irq: Do not free unallocated irq descriptors arch/s390/kernel/irq.c | 6 ++- arch/x86/kernel/apic/io_apic.c | 3 -- drivers/sh/intc/core.c | 5 +-- include/linux/irq.h | 13 +++--- kernel/irq/chip.c | 14 +++--- kernel/irq/irqdesc.c | 99 +++++++++++++++++++++++++++++++++++++----- 6 files changed, 109 insertions(+), 31 deletions(-) -- 1.8.4.5