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Message-Id: <1433391238-19471-1-git-send-email-jiang.liu@linux.intel.com>
Date: Thu, 4 Jun 2015 12:13:10 +0800
From: Jiang Liu <jiang.liu@...ux.intel.com>
To: Thomas Gleixner <tglx@...utronix.de>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>,
Randy Dunlap <rdunlap@...radead.org>,
Yinghai Lu <yinghai@...nel.org>,
Borislav Petkov <bp@...en8.de>,
Matthias Brugger <matthias.bgg@...il.com>
Cc: Jiang Liu <jiang.liu@...ux.intel.com>,
Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
Tony Luck <tony.luck@...el.com>, x86@...nel.org,
linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
linux-acpi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org
Subject: [RFT v2 00/48] Refine irq interfaces to reduce number of parameters
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.irq.
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.
This patch set is based the patch set to refine struct irq_data, which
has been posted at:
The patch set could be split into five parts:
1) Patch 1-2 is following-on cleanup work for
2) Patch 3-14 optimize irq handlers by avoiding redundant calling of
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.
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, struct irq_desc *desc)
kernel/irq/irqdesc.c:static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node,
kernel/irq/irqdesc.c:static void irq_insert_desc(unsigned int irq, struct irq_desc *desc)
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.
You may get the patch set from:
The patch set passes Fengguang's 0day test suites as below. And tests
with other platforms and configurations will be appreciated:)
----------------------------------------------------------
configs tested: 95
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
Thanks!
Gerry
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
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(-)
--
1.7.10.4
--
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