Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752879AbbKYMHa (ORCPT ); Wed, 25 Nov 2015 07:07:30 -0500 Received: from mailapp01.imgtec.com ([195.59.15.196]:34648 "EHLO mailapp01.imgtec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751053AbbKYMH3 (ORCPT ); Wed, 25 Nov 2015 07:07:29 -0500 From: Qais Yousef To: CC: , , , , , , Qais Yousef Subject: [PATCH v2 00/19] Implement generic IPI support mechanism Date: Wed, 25 Nov 2015 12:06:38 +0000 Message-ID: <1448453217-3874-1-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: 3572 Lines: 80 This series adds support for a generic IPI mechanism that can be used by both arch and drivers to send IPIs to other CPUs. v2 introduces a big change over v1 and should have addressed all review comments. List of changes: - We now have 2 IPI flags to distinguish per cpu IPIs from single ones. - IPI functions are in ipi.c - Added offset to ipi_mask to cater for masks starting at non-zero. - New API for sending IPIs. - Added device hierarchy to mips-gic. - Added a new patch to reserve mips-gic IPIs from DT. - Dropped the Docs help for now till API stabilises. It's hard to detail every change done but these are the headlines. It would be good to look at all patches again. Hopefully I broke them down in an away that is easy to review. I hope this is close enough to how it should be done and I didn't stray off. I tested this on Malta platform which effectively doesn't have DT support. Unfortunately I don't have access to a platform with DT support that can run on latest kernel. The recent changes in irq/core makes backporting the patches non trivial. Thanks in advance. 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 new struct ipi_mask and helper functions genirq: Add struct ipi_mask to irq_data genirq: Add struct ipi_mapping and its helper functions 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-gic.c | 64 --- arch/mips/kernel/smp-mt.c | 2 +- arch/mips/kernel/smp.c | 139 ++++++ drivers/irqchip/Kconfig | 2 + drivers/irqchip/irq-mips-gic.c | 354 +++++++++++---- include/linux/irq.h | 152 +++++++ include/linux/irqchip/mips-gic.h | 3 - include/linux/irqdomain.h | 46 ++ kernel/irq/Kconfig | 4 + kernel/irq/Makefile | 1 + kernel/irq/ipi.c | 478 +++++++++++++++++++++ kernel/irq/irqdomain.c | 6 +- 18 files changed, 1102 insertions(+), 176 deletions(-) delete mode 100644 arch/mips/kernel/smp-gic.c 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/