Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751571AbbEGDKs (ORCPT ); Wed, 6 May 2015 23:10:48 -0400 Received: from mga02.intel.com ([134.134.136.20]:26433 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751243AbbEGDKp (ORCPT ); Wed, 6 May 2015 23:10:45 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,382,1427785200"; d="scan'208";a="706463695" From: Jiang Liu To: Thomas Gleixner , "Rafael J . Wysocki" , Bjorn Helgaas Cc: Jiang Liu , Lv Zheng , LKML , linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, "x86 @ kernel . org" Subject: [RFC 0/4] Introduce a mechanism to allocate PCI IRQ on demand Date: Thu, 7 May 2015 11:12:50 +0800 Message-Id: <1430968374-29286-1-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1463 Lines: 40 This patch set introduces a mechanism to allocate PCI IRQ on demand and free it when not used anymore by hooking pci_device_probe() and pci_device_remove(). It will be used to track IOAPIC pin usage on x86 so we could support IOAPIC hot-removal. The patch set passes Fengguang's 0day test suite and is available at: https://github.com/jiangliu/linux.git pci_irq_v1 Thanks! Gerry Jiang Liu (4): PCI: Add hooks to allocate/free IRQ resources when binding/unbinding driver PCI, MSI: Optionally free legacy PCI IRQ when enabling MSI/MSI-X PCI, x86: Allocate PCI IRQ on demand and free it when not used anymore PCI: Introduce helpers to manage pci_dev->irq and pci_dev->irq_managed arch/x86/include/asm/pci_x86.h | 2 -- arch/x86/pci/common.c | 20 +++++++++----------- arch/x86/pci/intel_mid_pci.c | 9 ++++++--- arch/x86/pci/irq.c | 23 ++++------------------- drivers/acpi/pci_irq.c | 17 ++++------------- drivers/pci/msi.c | 6 +++++- drivers/pci/pci-driver.c | 33 +++++++++++++++++++++++---------- include/linux/pci.h | 19 +++++++++++++++++++ 8 files changed, 70 insertions(+), 59 deletions(-) -- 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/