Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932157AbbFEAYG (ORCPT ); Thu, 4 Jun 2015 20:24:06 -0400 Received: from mail-pd0-f173.google.com ([209.85.192.173]:35676 "EHLO mail-pd0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753609AbbFEAX6 (ORCPT ); Thu, 4 Jun 2015 20:23:58 -0400 Message-ID: <1433463773.7208.0.camel@axtens.net> Subject: Re: [RFT v2 00/48] Refine irq interfaces to reduce number of parameters From: Daniel Axtens To: Jiang Liu Cc: Thomas Gleixner , Bjorn Helgaas , Benjamin Herrenschmidt , Ingo Molnar , "H. Peter Anvin" , Randy Dunlap , Yinghai Lu , Borislav Petkov , Matthias Brugger , Konrad Rzeszutek Wilk , Tony Luck , x86@kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Date: Fri, 05 Jun 2015 10:22:53 +1000 In-Reply-To: <1433391238-19471-1-git-send-email-jiang.liu@linux.intel.com> References: <1433391238-19471-1-git-send-email-jiang.liu@linux.intel.com> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-w2KIXocCJZqJNRjHtefS" X-Mailer: Evolution 3.12.9-1+b1 Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 24038 Lines: 464 --=-w2KIXocCJZqJNRjHtefS Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Gerry, You seem to be missing the links where I can grab this patch set from, as indicated below. Is there somewhere I can pull this from to make it a bit easier for me to build? (Sorry if I've missed this elsewhere in the thread!) Thanks in advance, Daniel On Thu, 2015-06-04 at 12:13 +0800, Jiang Liu wrote: > Many irq core interfaces pass both 'struct irq_desc *desc' and 'int irq' > to identify an irq. But that's a little overhead, either 'irq_desc' or > 'irq' could identify an irq. We could get 'irq_desc' from 'irq' by > irq_to_desc() and get 'irq' from 'irq_desc' through irq_desc->irq_data.ir= q. > So this patch set aims to reduce number of parameters of irq related > interfaces by passing in either 'irq' or 'irq_desc" but not both. > Hope this helps to simplify interfaces and improve performance. >=20 > This patch set is based the patch set to refine struct irq_data, which > has been posted at: Here >=20 > The patch set could be split into five parts: > 1) Patch 1-2 is following-on cleanup work for=20 > 2) Patch 3-14 optimize irq handlers by avoiding redundant calling of=20 > irq_to_desc() when we already have a pointer to corresponding irq_desc= . > 3) Patch 15-20 reduce number of parameters of irq core functions. > 4) Patch 21-34 prepare for killing the first parameter 'irq' of > irq_flow_handler_t > 5) Patch 35-48 kill the first parameter 'irq' of irq_flow_handler_t. > All these patches should be combined as one big patch to support > bisecting, they have been split for easy review only. >=20 > With all these patches applied, a tree-wide 'grep -R "struct irq_desc" *' > shows that there are only four functions left who take both 'irq' and > 'irq_desc' as parameters: > kernel/irq/manage.c:__setup_irq(unsigned int irq, struct irq_desc *desc, = struct irqaction *new) > kernel/irq/debug.h:static inline void print_irq_desc(unsigned int irq, st= ruct irq_desc *desc) > kernel/irq/irqdesc.c:static void desc_set_defaults(unsigned int irq, stru= ct irq_desc *desc, int node, > kernel/irq/irqdesc.c:static void irq_insert_desc(unsigned int irq, struct= irq_desc *desc) >=20 > They are all pretty safe, it's a good sign that we have done a clean > conversion. Thomas suggested to use coci scripts verify conversion result= , > it's a little hard for me and will ask for help from Julia later. >=20 > You may get the patch set from: Here > The patch set passes Fengguang's 0day test suites as below. And tests > with other platforms and configurations will be appreciated:) > ---------------------------------------------------------- > configs tested: 95 >=20 > alpha defconfig > parisc allnoconfig > parisc b180_defconfig > parisc c3000_defconfig > parisc defconfig > i386 randconfig-a0-06031710 > i386 randconfig-a1-06031710 > x86_64 acpi-redef > x86_64 allyesdebian > x86_64 nfsroot > x86_64 allnoconfig > x86_64 rhel > sh allnoconfig > sh rsk7269_defconfig > sh sh7785lcr_32bit_defconfig > sh titan_defconfig > ia64 alldefconfig > ia64 allnoconfig > ia64 defconfig > powerpc allnoconfig > powerpc defconfig > powerpc ppc64_defconfig > i386 alldefconfig > i386 allmodconfig > i386 allnoconfig > i386 defconfig > mips allnoconfig > mips fuloong2e_defconfig > mips jz4740 > mips txx9 > x86_64 randconfig-i0-0603 > x86_64 randconfig-i1-0603 > sparc defconfig > sparc64 allnoconfig > sparc64 defconfig > microblaze mmu_defconfig > microblaze nommu_defconfig > i386 randconfig-i0-0603 > i386 randconfig-i1-0603 > i386 allyesconfig > blackfin BF526-EZBRD_defconfig > blackfin BF533-EZKIT_defconfig > blackfin BF561-EZKIT-SMP_defconfig > blackfin TCM-BF537_defconfig > cris etrax-100lx_v2_defconfig > i386 randconfig-n0-0603 > i386 randconfig-n1-0603 > x86_64 lkp > arm allnoconfig > arm at91_dt_defconfig > arm at_hdmac > arm ep93xx > arm imx_v6_v7_defconfig > arm iop-adma > arm marzen_defconfig > arm prima2_defconfig > arm sa1100 > arm samsung > arm sh > arm spear13xx_defconfig > m68k amiga_defconfig > m68k m5475evb_defconfig > m68k multi_defconfig > x86_64 allmodconfig > x86_64 randconfig-x000-06031659 > x86_64 randconfig-x001-06031659 > x86_64 randconfig-x002-06031659 > x86_64 randconfig-x003-06031659 > x86_64 randconfig-x004-06031659 > x86_64 randconfig-x005-06031659 > x86_64 randconfig-x006-06031659 > x86_64 randconfig-x007-06031659 > x86_64 randconfig-x008-06031659 > x86_64 randconfig-x009-06031659 > i386 randconfig-r0-0603 > i386 randconfig-r1-0603 > avr32 atngw100_defconfig > avr32 atstk1006_defconfig > frv defconfig > mn10300 asb2364_defconfig > openrisc or1ksim_defconfig > tile tilegx_defconfig > um i386_defconfig > um x86_64_defconfig > i386 randconfig-x000-06031736 > i386 randconfig-x001-06031736 > i386 randconfig-x002-06031736 > i386 randconfig-x003-06031736 > i386 randconfig-x004-06031736 > i386 randconfig-x005-06031736 > i386 randconfig-x006-06031736 > i386 randconfig-x007-06031736 > i386 randconfig-x008-06031736 > i386 randconfig-x009-06031736 > x86_64 randconfig-x0-06031736 >=20 > Thanks! > Gerry >=20 > Jiang Liu (48): > genirq: Clean up outdated comments related to include/linux/irqdesc.h > genirq: Kill never used irq_node() > MIPS, irq: Use irq_desc_get_xxx() to avoid redundant lookup of > irq_desc > powerpc, irq: Use irq_desc_get_xxx() to avoid redundant lookup of > irq_desc > gpio: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc > pinctrl: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc > avr32, irq: Use irq_desc_get_xxx() to avoid redundant lookup of > irq_desc > mfd: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc > ARM, irq: Use irq_desc_get_xxx() to avoid redundant lookup of > irq_desc > irqchip: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc > ipu: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc > sh: intc: Use irq_desc_get_xxx() to avoid redundant lookup of > irq_desc > keystone, irq: Use irq_data_get_xxx() to avoid redundant lookup of > irq_data > spmi: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc > genirq: Kill the parameter 'irq' of kstat_incr_irqs_this_cpu() > genirq: Introduce helper irq_desc_get_irq() > genirq: Kill the parameter 'irq' of check_irq_resend() > genirq: Kill the parameter 'irq' of note_interrupt() > genirq: Change prototypes of register_irq_proc() and friends > genirq: Kill the parameter 'irq' of setup_affinity() > ARM, irq: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > blackfin, irq: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > c6x, irq: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > m68k, irq: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > mips, irq: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > powerpc, irq: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > sh, irq: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > unicore32, irq: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > ipu: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > gpio: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > irqchip: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > mfd: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > PCI/keystone: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > pinctrl: Prepare for killing the first parameter 'irq' of > irq_flow_handler_t > genirq: Kill the first parameter 'irq' of irq_flow_handler_t > genirq, arm: Kill the first parameter 'irq' of irq_flow_handler_t > genirq, blackfin: Kill the first parameter 'irq' of > irq_flow_handler_t > genirq, powerpc: Kill the first parameter 'irq' of irq_flow_handler_t > genirq, mips: Kill the first parameter 'irq' of irq_flow_handler_t > genirq, m68k: Kill the first parameter 'irq' of irq_flow_handler_t > genirq, x86: Kill the first parameter 'irq' of irq_flow_handler_t > genirq, sh: Kill the first parameter 'irq' of irq_flow_handler_t > genirq, arch: Kill the first parameter 'irq' of irq_flow_handler_t > genirq, pinctrl: Kill the first parameter 'irq' of irq_flow_handler_t > genirq, gpio: Kill the first parameter 'irq' of irq_flow_handler_t > genirq, irqchip: Kill the first parameter 'irq' of irq_flow_handler_t > genirq, mfd: Kill the first parameter 'irq' of irq_flow_handler_t > genirq, drivers: Kill the first parameter 'irq' of irq_flow_handler_t >=20 > arch/alpha/kernel/irq.c | 2 +- > arch/arm/common/it8152.c | 2 +- > arch/arm/common/locomo.c | 13 ++--- > arch/arm/common/sa1111.c | 6 +-- > arch/arm/include/asm/hardware/it8152.h | 2 +- > arch/arm/include/asm/mach/irq.h | 4 +- > arch/arm/mach-dove/irq.c | 5 +- > arch/arm/mach-footbridge/isa-irq.c | 4 +- > arch/arm/mach-gemini/gpio.c | 2 +- > arch/arm/mach-imx/3ds_debugboard.c | 2 +- > arch/arm/mach-imx/mach-mx31ads.c | 2 +- > arch/arm/mach-iop13xx/msi.c | 2 +- > arch/arm/mach-lpc32xx/irq.c | 4 +- > arch/arm/mach-netx/generic.c | 2 +- > arch/arm/mach-omap1/fpga.c | 2 +- > arch/arm/mach-omap2/prm_common.c | 2 +- > arch/arm/mach-pxa/balloon3.c | 5 +- > arch/arm/mach-pxa/cm-x2xx-pci.c | 4 +- > arch/arm/mach-pxa/lpd270.c | 6 +-- > arch/arm/mach-pxa/pcm990-baseboard.c | 5 +- > arch/arm/mach-pxa/viper.c | 8 ++- > arch/arm/mach-pxa/zeus.c | 8 ++- > arch/arm/mach-rpc/ecard.c | 2 +- > arch/arm/mach-s3c24xx/bast-irq.c | 3 +- > arch/arm/mach-s3c64xx/common.c | 8 +-- > arch/arm/mach-sa1100/neponset.c | 2 +- > arch/arm/plat-orion/gpio.c | 4 +- > arch/avr32/mach-at32ap/extint.c | 2 +- > arch/avr32/mach-at32ap/pio.c | 4 +- > arch/blackfin/include/asm/irq_handler.h | 4 +- > arch/blackfin/kernel/ipipe.c | 4 +- > arch/blackfin/mach-bf537/ints-priority.c | 8 ++- > arch/blackfin/mach-common/ints-priority.c | 8 ++- > arch/c6x/platforms/megamod-pic.c | 9 ++-- > arch/m68k/amiga/amiints.c | 8 +-- > arch/m68k/coldfire/intc-5272.c | 4 +- > arch/m68k/include/asm/irq.h | 3 +- > arch/m68k/include/asm/mac_via.h | 2 +- > arch/m68k/mac/baboon.c | 2 +- > arch/m68k/mac/oss.c | 4 +- > arch/m68k/mac/psc.c | 3 +- > arch/m68k/mac/via.c | 6 +-- > arch/mips/alchemy/common/irq.c | 4 +- > arch/mips/alchemy/devboards/bcsr.c | 3 +- > arch/mips/ath25/ar2315.c | 4 +- > arch/mips/ath25/ar5312.c | 4 +- > arch/mips/ath79/irq.c | 11 ++-- > arch/mips/cavium-octeon/octeon-irq.c | 12 +++-- > arch/mips/include/asm/netlogic/common.h | 4 +- > arch/mips/jz4740/gpio.c | 2 +- > arch/mips/netlogic/common/smp.c | 4 +- > arch/mips/pci/pci-ar2315.c | 4 +- > arch/mips/pci/pci-ar71xx.c | 4 +- > arch/mips/pci/pci-ar724x.c | 4 +- > arch/mips/pci/pci-rt3883.c | 8 ++- > arch/mips/ralink/irq.c | 4 +- > arch/powerpc/include/asm/qe_ic.h | 23 ++++---- > arch/powerpc/include/asm/tsi108_pci.h | 2 +- > arch/powerpc/platforms/512x/mpc5121_ads_cpld.c | 4 +- > arch/powerpc/platforms/52xx/media5200.c | 2 +- > arch/powerpc/platforms/52xx/mpc52xx_gpt.c | 4 +- > arch/powerpc/platforms/82xx/pq2ads-pci-pic.c | 2 +- > arch/powerpc/platforms/85xx/common.c | 2 +- > arch/powerpc/platforms/85xx/mpc85xx_cds.c | 5 +- > arch/powerpc/platforms/85xx/mpc85xx_ds.c | 2 +- > arch/powerpc/platforms/85xx/socrates_fpga_pic.c | 4 +- > arch/powerpc/platforms/86xx/pic.c | 2 +- > arch/powerpc/platforms/8xx/m8xx_setup.c | 2 +- > arch/powerpc/platforms/cell/axon_msi.c | 4 +- > arch/powerpc/platforms/cell/interrupt.c | 3 +- > arch/powerpc/platforms/cell/spider-pic.c | 2 +- > arch/powerpc/platforms/chrp/setup.c | 2 +- > arch/powerpc/platforms/embedded6xx/hlwd-pic.c | 5 +- > arch/powerpc/platforms/embedded6xx/mvme5100.c | 2 +- > arch/powerpc/platforms/pseries/setup.c | 2 +- > arch/powerpc/sysdev/ge/ge_pic.c | 2 +- > arch/powerpc/sysdev/ge/ge_pic.h | 2 +- > arch/powerpc/sysdev/mpic.c | 2 +- > arch/powerpc/sysdev/qe_lib/qe_ic.c | 4 +- > arch/powerpc/sysdev/tsi108_pci.c | 2 +- > arch/powerpc/sysdev/uic.c | 4 +- > arch/powerpc/sysdev/xics/xics-common.c | 2 +- > arch/powerpc/sysdev/xilinx_intc.c | 2 +- > arch/sh/boards/mach-se/7343/irq.c | 4 +- > arch/sh/boards/mach-se/7722/irq.c | 4 +- > arch/sh/boards/mach-se/7724/irq.c | 4 +- > arch/sh/boards/mach-x3proto/gpio.c | 4 +- > arch/sh/cchips/hd6446x/hd64461.c | 2 +- > arch/sparc/kernel/leon_kernel.c | 2 +- > arch/sparc/kernel/leon_pci_grpci1.c | 2 +- > arch/sparc/kernel/leon_pci_grpci2.c | 2 +- > arch/tile/kernel/pci_gx.c | 4 +- > arch/unicore32/kernel/irq.c | 5 +- > arch/x86/kernel/irq_32.c | 13 +++-- > arch/x86/kernel/irq_64.c | 2 +- > arch/x86/lguest/boot.c | 2 +- > drivers/dma/ipu/ipu_irq.c | 8 +-- > drivers/gpio/gpio-altera.c | 6 +-- > drivers/gpio/gpio-bcm-kona.c | 4 +- > drivers/gpio/gpio-davinci.c | 3 +- > drivers/gpio/gpio-dwapb.c | 4 +- > drivers/gpio/gpio-ep93xx.c | 5 +- > drivers/gpio/gpio-intel-mid.c | 2 +- > drivers/gpio/gpio-lynxpoint.c | 2 +- > drivers/gpio/gpio-mpc8xxx.c | 2 +- > drivers/gpio/gpio-msic.c | 2 +- > drivers/gpio/gpio-msm-v2.c | 2 +- > drivers/gpio/gpio-mvebu.c | 4 +- > drivers/gpio/gpio-mxc.c | 10 ++-- > drivers/gpio/gpio-mxs.c | 4 +- > drivers/gpio/gpio-omap.c | 4 +- > drivers/gpio/gpio-pl061.c | 2 +- > drivers/gpio/gpio-pxa.c | 2 +- > drivers/gpio/gpio-sa1100.c | 5 +- > drivers/gpio/gpio-tegra.c | 6 +-- > drivers/gpio/gpio-timberdale.c | 7 +-- > drivers/gpio/gpio-tz1090.c | 4 +- > drivers/gpio/gpio-vf610.c | 4 +- > drivers/gpio/gpio-zynq.c | 4 +- > drivers/gpu/ipu-v3/ipu-common.c | 8 +-- > drivers/irqchip/exynos-combiner.c | 8 +-- > drivers/irqchip/irq-armada-370-xp.c | 5 +- > drivers/irqchip/irq-bcm7038-l1.c | 2 +- > drivers/irqchip/irq-bcm7120-l2.c | 2 +- > drivers/irqchip/irq-brcmstb-l2.c | 7 +-- > drivers/irqchip/irq-dw-apb-ictl.c | 6 +-- > drivers/irqchip/irq-gic.c | 6 +-- > drivers/irqchip/irq-imgpdc.c | 5 +- > drivers/irqchip/irq-keystone.c | 6 +-- > drivers/irqchip/irq-metag-ext.c | 3 +- > drivers/irqchip/irq-metag.c | 3 +- > drivers/irqchip/irq-mips-gic.c | 2 +- > drivers/irqchip/irq-mmp.c | 3 +- > drivers/irqchip/irq-orion.c | 4 +- > drivers/irqchip/irq-s3c24xx.c | 6 +-- > drivers/irqchip/irq-sunxi-nmi.c | 4 +- > drivers/irqchip/irq-tb10x.c | 4 +- > drivers/irqchip/irq-versatile-fpga.c | 6 +-- > drivers/irqchip/irq-vic.c | 2 +- > drivers/irqchip/spear-shirq.c | 4 +- > drivers/mfd/asic3.c | 2 +- > drivers/mfd/ezx-pcap.c | 4 +- > drivers/mfd/htc-egpio.c | 2 +- > drivers/mfd/jz4740-adc.c | 2 +- > drivers/mfd/max8997-irq.c | 8 +-- > drivers/mfd/mt6397-core.c | 8 +-- > drivers/mfd/pm8921-core.c | 2 +- > drivers/mfd/t7l66xb.c | 4 +- > drivers/mfd/tc6393xb.c | 4 +- > drivers/mfd/twl6030-irq.c | 2 +- > drivers/mfd/ucb1x00-core.c | 4 +- > drivers/pci/host/pci-keystone-dw.c | 15 +++--- > drivers/pci/host/pci-keystone.c | 7 +-- > drivers/pinctrl/bcm/pinctrl-cygnus-gpio.c | 2 +- > drivers/pinctrl/intel/pinctrl-baytrail.c | 2 +- > drivers/pinctrl/intel/pinctrl-cherryview.c | 4 +- > drivers/pinctrl/intel/pinctrl-intel.c | 4 +- > drivers/pinctrl/mediatek/pinctrl-mtk-common.c | 6 +-- > drivers/pinctrl/nomadik/pinctrl-nomadik.c | 14 +++-- > drivers/pinctrl/pinctrl-adi2.c | 3 +- > drivers/pinctrl/pinctrl-amd.c | 8 +-- > drivers/pinctrl/pinctrl-at91.c | 4 +- > drivers/pinctrl/pinctrl-coh901.c | 7 +-- > drivers/pinctrl/pinctrl-rockchip.c | 8 +-- > drivers/pinctrl/pinctrl-single.c | 4 +- > drivers/pinctrl/pinctrl-st.c | 10 ++-- > drivers/pinctrl/qcom/pinctrl-msm.c | 6 +-- > drivers/pinctrl/samsung/pinctrl-exynos.c | 12 ++--- > drivers/pinctrl/samsung/pinctrl-s3c24xx.c | 26 ++++----- > drivers/pinctrl/samsung/pinctrl-s3c64xx.c | 32 ++++++----- > drivers/pinctrl/sirf/pinctrl-sirf.c | 7 +-- > drivers/pinctrl/spear/pinctrl-plgpio.c | 2 +- > drivers/pinctrl/sunxi/pinctrl-sunxi.c | 7 +-- > drivers/sh/intc/core.c | 4 +- > drivers/sh/intc/virq.c | 18 ++++--- > drivers/spmi/spmi-pmic-arb.c | 6 +-- > include/linux/irq.h | 20 ++++--- > include/linux/irqdesc.h | 12 +++-- > include/linux/irqhandler.h | 2 +- > include/linux/irqnr.h | 6 --- > kernel/irq/chip.c | 44 +++++++-------- > kernel/irq/handle.c | 8 +-- > kernel/irq/internals.h | 29 +++++----- > kernel/irq/irqdesc.c | 6 +-- > kernel/irq/manage.c | 66 ++++++++++++-----= ------ > kernel/irq/pm.c | 12 ++--- > kernel/irq/proc.c | 16 +++--- > kernel/irq/resend.c | 4 +- > kernel/irq/spurious.c | 33 ++++++------ > 189 files changed, 543 insertions(+), 565 deletions(-) >=20 --=-w2KIXocCJZqJNRjHtefS Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part 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