From patchwork Tue Nov 24 20:03:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 1405726 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=FAqw2zib; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CgZhz3Cdzz9sRR for ; Wed, 25 Nov 2020 07:03:47 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729978AbgKXUD0 (ORCPT ); Tue, 24 Nov 2020 15:03:26 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:38299 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729967AbgKXUDY (ORCPT ); Tue, 24 Nov 2020 15:03:24 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1606248201; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=DOLfU9QYMGrspYJyzvFCDSDoj+0Yb7d+LpKKWf0+TiU=; b=FAqw2zibwqARE/mKyw8PpUsExVJWr+RQLftTsMlJ43XmW31CBdpTrbHWV8PGvWA+sls5x0 I0HOWHrFkI/Ieyoc2p81LIaDaehX0IWsP3OIiHcIxuvkew283nFpQFoVuqP1nnHa1KWGsj XDRdL+O+hmPKC8+QAIT22q2QkbKPFQI= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-161-6_d5NO5PPCy6SULvgRXZBQ-1; Tue, 24 Nov 2020 15:03:19 -0500 X-MC-Unique: 6_d5NO5PPCy6SULvgRXZBQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2F411107AD88; Tue, 24 Nov 2020 20:03:17 +0000 (UTC) Received: from thinkpad.redhat.com (ovpn-113-83.ams2.redhat.com [10.36.113.83]) by smtp.corp.redhat.com (Postfix) with ESMTP id B80705D6AB; Tue, 24 Nov 2020 20:03:09 +0000 (UTC) From: Laurent Vivier To: linux-kernel@vger.kernel.org Cc: Thomas Gleixner , Paul Mackerras , Benjamin Herrenschmidt , Michael Ellerman , linux-block@vger.kernel.org, "Michael S . Tsirkin" , Marc Zyngier , linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org, Christoph Hellwig , Laurent Vivier Subject: [PATCH 0/2] powerpc/pseries: fix MSI/X IRQ affinity on pseries Date: Tue, 24 Nov 2020 21:03:06 +0100 Message-Id: <20201124200308.1110744-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org With virtio, in multiqueue case, each queue IRQ is normally bound to a different CPU using the affinity mask. This works fine on x86_64 but totally ignored on pseries. This is not obvious at first look because irqbalance is doing some balancing to improve that. It appears that the "managed" flag set in the MSI entry is never copied to the system IRQ entry. This series passes the affinity mask from rtas_setup_msi_irqs() to irq_domain_alloc_descs() by adding an affinity parameter to irq_create_mapping(). The first patch adds the parameter (no functional change), the second patch passes the actual affinity mask to irq_create_mapping() in rtas_setup_msi_irqs(). For instance, with 32 CPUs VM and 32 queues virtio-scsi interface: ... -smp 32 -device virtio-scsi-pci,id=virtio_scsi_pci0,num_queues=32 for IRQ in $(grep virtio2-request /proc/interrupts |cut -d: -f1); do for file in /proc/irq/$IRQ/ ; do echo -n "IRQ: $(basename $file) CPU: " ; cat $file/smp_affinity_list done done Without the patch (and without irqbalanced) IRQ: 268 CPU: 0-31 IRQ: 269 CPU: 0-31 IRQ: 270 CPU: 0-31 IRQ: 271 CPU: 0-31 IRQ: 272 CPU: 0-31 IRQ: 273 CPU: 0-31 IRQ: 274 CPU: 0-31 IRQ: 275 CPU: 0-31 IRQ: 276 CPU: 0-31 IRQ: 277 CPU: 0-31 IRQ: 278 CPU: 0-31 IRQ: 279 CPU: 0-31 IRQ: 280 CPU: 0-31 IRQ: 281 CPU: 0-31 IRQ: 282 CPU: 0-31 IRQ: 283 CPU: 0-31 IRQ: 284 CPU: 0-31 IRQ: 285 CPU: 0-31 IRQ: 286 CPU: 0-31 IRQ: 287 CPU: 0-31 IRQ: 288 CPU: 0-31 IRQ: 289 CPU: 0-31 IRQ: 290 CPU: 0-31 IRQ: 291 CPU: 0-31 IRQ: 292 CPU: 0-31 IRQ: 293 CPU: 0-31 IRQ: 294 CPU: 0-31 IRQ: 295 CPU: 0-31 IRQ: 296 CPU: 0-31 IRQ: 297 CPU: 0-31 IRQ: 298 CPU: 0-31 IRQ: 299 CPU: 0-31 With the patch: IRQ: 265 CPU: 0 IRQ: 266 CPU: 1 IRQ: 267 CPU: 2 IRQ: 268 CPU: 3 IRQ: 269 CPU: 4 IRQ: 270 CPU: 5 IRQ: 271 CPU: 6 IRQ: 272 CPU: 7 IRQ: 273 CPU: 8 IRQ: 274 CPU: 9 IRQ: 275 CPU: 10 IRQ: 276 CPU: 11 IRQ: 277 CPU: 12 IRQ: 278 CPU: 13 IRQ: 279 CPU: 14 IRQ: 280 CPU: 15 IRQ: 281 CPU: 16 IRQ: 282 CPU: 17 IRQ: 283 CPU: 18 IRQ: 284 CPU: 19 IRQ: 285 CPU: 20 IRQ: 286 CPU: 21 IRQ: 287 CPU: 22 IRQ: 288 CPU: 23 IRQ: 289 CPU: 24 IRQ: 290 CPU: 25 IRQ: 291 CPU: 26 IRQ: 292 CPU: 27 IRQ: 293 CPU: 28 IRQ: 294 CPU: 29 IRQ: 295 CPU: 30 IRQ: 299 CPU: 31 This matches what we have on an x86_64 system. Laurent Vivier (2): genirq: add an affinity parameter to irq_create_mapping() powerpc/pseries: pass MSI affinity to irq_create_mapping() arch/arc/kernel/intc-arcv2.c | 4 ++-- arch/arc/kernel/mcip.c | 2 +- arch/arm/common/sa1111.c | 2 +- arch/arm/mach-s3c/irq-s3c24xx.c | 3 ++- arch/arm/plat-orion/gpio.c | 2 +- arch/mips/ath25/ar2315.c | 4 ++-- arch/mips/ath25/ar5312.c | 4 ++-- arch/mips/lantiq/irq.c | 2 +- arch/mips/pci/pci-ar2315.c | 3 ++- arch/mips/pic32/pic32mzda/time.c | 2 +- arch/mips/ralink/irq.c | 2 +- arch/powerpc/kernel/pci-common.c | 2 +- arch/powerpc/kvm/book3s_xive.c | 2 +- arch/powerpc/platforms/44x/ppc476.c | 4 ++-- arch/powerpc/platforms/cell/interrupt.c | 4 ++-- arch/powerpc/platforms/cell/iommu.c | 3 ++- arch/powerpc/platforms/cell/pmu.c | 2 +- arch/powerpc/platforms/cell/spider-pic.c | 2 +- arch/powerpc/platforms/cell/spu_manage.c | 6 +++--- arch/powerpc/platforms/maple/pci.c | 2 +- arch/powerpc/platforms/pasemi/dma_lib.c | 5 +++-- arch/powerpc/platforms/pasemi/msi.c | 2 +- arch/powerpc/platforms/pasemi/setup.c | 4 ++-- arch/powerpc/platforms/powermac/pci.c | 2 +- arch/powerpc/platforms/powermac/pic.c | 2 +- arch/powerpc/platforms/powermac/smp.c | 2 +- arch/powerpc/platforms/powernv/opal-irqchip.c | 5 +++-- arch/powerpc/platforms/powernv/pci.c | 2 +- arch/powerpc/platforms/powernv/vas.c | 2 +- arch/powerpc/platforms/ps3/interrupt.c | 2 +- arch/powerpc/platforms/pseries/ibmebus.c | 2 +- arch/powerpc/platforms/pseries/msi.c | 2 +- arch/powerpc/sysdev/fsl_mpic_err.c | 2 +- arch/powerpc/sysdev/fsl_msi.c | 2 +- arch/powerpc/sysdev/mpic.c | 3 ++- arch/powerpc/sysdev/mpic_u3msi.c | 2 +- arch/powerpc/sysdev/xics/xics-common.c | 2 +- arch/powerpc/sysdev/xive/common.c | 2 +- arch/sh/boards/mach-se/7343/irq.c | 2 +- arch/sh/boards/mach-se/7722/irq.c | 2 +- arch/sh/boards/mach-x3proto/gpio.c | 2 +- arch/xtensa/kernel/perf_event.c | 2 +- arch/xtensa/kernel/smp.c | 2 +- arch/xtensa/kernel/time.c | 2 +- drivers/ata/pata_macio.c | 2 +- drivers/base/regmap/regmap-irq.c | 2 +- drivers/bus/moxtet.c | 2 +- drivers/clocksource/ingenic-timer.c | 2 +- drivers/clocksource/timer-riscv.c | 2 +- drivers/extcon/extcon-max8997.c | 3 ++- drivers/gpio/gpio-bcm-kona.c | 2 +- drivers/gpio/gpio-brcmstb.c | 2 +- drivers/gpio/gpio-davinci.c | 2 +- drivers/gpio/gpio-em.c | 3 ++- drivers/gpio/gpio-grgpio.c | 2 +- drivers/gpio/gpio-mockup.c | 2 +- drivers/gpio/gpio-mpc8xxx.c | 2 +- drivers/gpio/gpio-mvebu.c | 2 +- drivers/gpio/gpio-tb10x.c | 2 +- drivers/gpio/gpio-tegra.c | 2 +- drivers/gpio/gpio-wm831x.c | 2 +- drivers/gpio/gpiolib.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 3 ++- drivers/gpu/ipu-v3/ipu-common.c | 2 +- drivers/hid/hid-rmi.c | 2 +- drivers/i2c/busses/i2c-cht-wc.c | 2 +- drivers/i2c/i2c-core-base.c | 2 +- drivers/i2c/muxes/i2c-mux-pca954x.c | 2 +- drivers/ide/pmac.c | 2 +- drivers/iio/dummy/iio_dummy_evgen.c | 3 ++- drivers/input/rmi4/rmi_bus.c | 2 +- drivers/irqchip/irq-ath79-misc.c | 3 ++- drivers/irqchip/irq-bcm2835.c | 3 ++- drivers/irqchip/irq-csky-mpintc.c | 2 +- drivers/irqchip/irq-eznps.c | 2 +- drivers/irqchip/irq-mips-gic.c | 8 +++++--- drivers/irqchip/irq-mmp.c | 4 ++-- drivers/irqchip/irq-versatile-fpga.c | 2 +- drivers/irqchip/irq-vic.c | 2 +- drivers/macintosh/macio_asic.c | 2 +- drivers/memory/omap-gpmc.c | 2 +- drivers/mfd/ab8500-core.c | 2 +- drivers/mfd/arizona-irq.c | 5 +++-- drivers/mfd/db8500-prcmu.c | 2 +- drivers/mfd/mfd-core.c | 2 +- drivers/mfd/stmpe.c | 5 +++-- drivers/mfd/tc3589x.c | 2 +- drivers/mfd/tps6586x.c | 2 +- drivers/mfd/wm8994-irq.c | 5 +++-- drivers/misc/cxl/irq.c | 2 +- drivers/misc/ocxl/afu_irq.c | 2 +- drivers/misc/ocxl/link.c | 2 +- drivers/net/dsa/mv88e6xxx/chip.c | 2 +- drivers/net/dsa/mv88e6xxx/global2.c | 2 +- drivers/net/dsa/qca/ar9331.c | 2 +- drivers/net/dsa/rtl8366rb.c | 3 ++- drivers/net/ethernet/ibm/ibmvnic.c | 4 ++-- drivers/net/usb/lan78xx.c | 2 +- drivers/pci/controller/pci-ftpci100.c | 2 +- drivers/pci/controller/pci-tegra.c | 2 +- drivers/pci/controller/pcie-rcar-host.c | 2 +- drivers/pci/controller/pcie-xilinx-cpm.c | 4 ++-- drivers/pci/controller/pcie-xilinx.c | 2 +- drivers/pinctrl/mediatek/mtk-eint.c | 2 +- drivers/pinctrl/nomadik/pinctrl-abx500.c | 3 ++- drivers/pinctrl/pinctrl-at91-pio4.c | 3 ++- drivers/pinctrl/pinctrl-rockchip.c | 2 +- drivers/pinctrl/samsung/pinctrl-samsung.c | 2 +- drivers/pinctrl/sunxi/pinctrl-sunxi.c | 2 +- drivers/power/supply/lp8788-charger.c | 2 +- drivers/rtc/rtc-lp8788.c | 2 +- drivers/rtc/rtc-max8997.c | 3 ++- drivers/rtc/rtc-max8998.c | 3 ++- drivers/scsi/cxlflash/ocxl_hw.c | 2 +- drivers/ssb/driver_gpio.c | 4 ++-- drivers/staging/hikey9xx/hi6421-spmi-pmic.c | 2 +- drivers/staging/octeon-usb/octeon-hcd.c | 2 +- drivers/tty/hvc/hvsi.c | 2 +- drivers/tty/serial/pmac_zilog.c | 6 +++--- drivers/watchdog/octeon-wdt-main.c | 2 +- include/linux/irqdomain.h | 3 ++- kernel/irq/irqdomain.c | 8 +++++--- sound/soc/codecs/rt5677.c | 2 +- 123 files changed, 171 insertions(+), 146 deletions(-) Acked-by: Michael S. Tsirkin