Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756307AbbLHNUz (ORCPT ); Tue, 8 Dec 2015 08:20:55 -0500 Received: from mailapp01.imgtec.com ([195.59.15.196]:8091 "EHLO mailapp01.imgtec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751927AbbLHNUy (ORCPT ); Tue, 8 Dec 2015 08:20:54 -0500 From: Qais Yousef To: CC: , , , , , , , Qais Yousef Subject: [PATCH v4 00/19] Implement generic IPI support mechanism Date: Tue, 8 Dec 2015 13:20:11 +0000 Message-ID: <1449580830-23652-1-git-send-email-qais.yousef@imgtec.com> X-Mailer: git-send-email 2.1.0 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [192.168.154.94] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3287 Lines: 72 This series adds support for a generic IPI mechanism that can be used by both arch and drivers to send IPIs to other CPUs. v4 is rebased on tip of irq/core and fixes a bug in ipi_send_single() where we were passing the basevirq irq_data instead of the irq_data for the target cpu. v3 removed the use of struct ipi_mask and moved to using cpumask only. The assumption is that the user would need to set NR_CPUS to a suitable value to cater for coprocessors outside linux SMP range. We use irq_common_data affinity to store the ipi_mask too. Maybe we need to separate them later, but I think it can be done safely later if the need arises. This is boot tested on Malta platform. Note that of_irq_find_parent() was moved to be static and could cause this patch series not to compile. The issue was reported and a fix to undo that change is in the pipeline (in the DT tree I guess). Thanks, Qais Qais Yousef (19): genirq: Add new IRQ_DOMAIN_FLAGS_IPI genirq: Add DOMAIN_BUS_IPI genirq: Add GENERIC_IRQ_IPI Kconfig symbol genirq: Add struct ipi_mapping and its helper functions genirq: Add ipi_offset to irq_common_data genirq: Add an extra comment about the use of affinity in irq_common_data genirq: Make irq_domain_alloc_descs() non static genirq: Add a new generic IPI reservation code to irq core genirq: Add a new function to get IPI reverse mapping genirq: Add a new irq_send_ipi() to irq_chip genirq: Implement ipi_send_{mask, single}() irqchip/mips-gic: Add a IPI hierarchy domain irqchip/mips-gic: Add device hierarchy domain irqchip/mips-gic: Use gic_vpes instead of NR_CPUS irqchip/mips-gic: Clear percpu_masks correctly when mapping MIPS: Add generic SMP IPI support MIPS: Make smp CMP, CPS and MT use the new generic IPI functions MIPS: Delete smp-gic.c irqchip/mips-gic: Add new DT property to reserve IPIs .../bindings/interrupt-controller/mips-gic.txt | 7 + arch/mips/Kconfig | 6 - arch/mips/include/asm/smp-ops.h | 5 +- arch/mips/kernel/Makefile | 1 - arch/mips/kernel/smp-cmp.c | 4 +- arch/mips/kernel/smp-cps.c | 4 +- arch/mips/kernel/smp-mt.c | 2 +- arch/mips/kernel/smp.c | 136 +++++++ drivers/irqchip/Kconfig | 2 + drivers/irqchip/irq-mips-gic.c | 354 ++++++++++++----- include/linux/irq.h | 61 ++- include/linux/irqchip/mips-gic.h | 3 - include/linux/irqdomain.h | 45 +++ kernel/irq/Kconfig | 4 + kernel/irq/Makefile | 1 + kernel/irq/ipi.c | 441 +++++++++++++++++++++ kernel/irq/irqdomain.c | 6 +- 17 files changed, 969 insertions(+), 113 deletions(-) create mode 100644 kernel/irq/ipi.c -- 2.1.0 -- 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/