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Marc Zyngier c5d6082d35 irqchip/gic-v3-its: Balance initial LPI affinity across CPUs 
When mapping a LPI, the ITS driver picks the first possible
affinity, which is in most cases CPU0, assuming that if
that's not suitable, someone will come and set the affinity
to something more interesting.

It apparently isn't the case, and people complain of poor
performance when many interrupts are glued to the same CPU.
So let's place the interrupts by finding the "least loaded"
CPU (that is, the one that has the fewer LPIs mapped to it).
So called 'managed' interrupts are an interesting case where
the affinity is actually dictated by the kernel itself, and
we should honor this.

Reported-by: John Garry <john.garry@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Tested-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1575642904-58295-1-git-send-email-john.garry@huawei.com
Link: https://lore.kernel.org/r/20200515165752.121296-3-maz@kernel.org
2020-05-20 11:00:00 +01:00
..
alphascale_asm9260-icoll.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
exynos-combiner.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-al-fic.c
irqchip/al-fic: Add support for irq retrigger
2019-09-09 18:11:47 +01:00
irq-alpine-msi.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
irq-armada-370-xp.c
irqchip updates for 4.14
2017-08-31 20:12:51 +02:00
irq-aspeed-i2c-ic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-aspeed-scu-ic.c
irqchip: Add Aspeed SCU interrupt controller
2020-01-20 19:10:04 +00:00
irq-aspeed-vic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
irq-ath79-cpu.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-ath79-misc.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-ativic32.c
nds32: Power management for nds32
2018-11-06 18:01:41 +08:00
irq-atmel-aic5.c
irqchip/atmel-aic5: Fix irq_retrigger callback return value
2020-03-16 15:48:54 +00:00
irq-atmel-aic-common.c
irqchip/atmel-aic: Remove root argument from ->fixup() prototype
2017-07-04 11:10:37 +01:00
irq-atmel-aic-common.h
irqchip/atmel-aic: Remove root argument from ->fixup() prototype
2017-07-04 11:10:37 +01:00
irq-atmel-aic.c
irqchip/atmel-aic: Fix irq_retrigger callback return value
2020-03-16 15:48:54 +00:00
irq-bcm2835.c
irqchip/bcm2835: Quiesce IRQs left enabled by bootloader
2020-03-16 15:48:54 +00:00
irq-bcm2836.c
irqchip: bcm283x: Switch to SPDX identifier
2018-12-13 09:35:36 +00:00
irq-bcm6345-l1.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-bcm7038-l1.c
irqchip/irq-bcm7038-l1: Make bcm7038_l1_of_init() static
2020-04-17 08:59:30 +01:00
irq-bcm7120-l2.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-brcmstb-l2.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
irq-clps711x.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-crossbar.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-csky-apb-intc.c
irqchip/csky: fixup handle_irq_perbit break irq
2019-01-09 00:18:46 +08:00
irq-csky-mpintc.c
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 11:01:13 -07:00
irq-davinci-aintc.c
irqchip: davinci-aintc: move the driver to drivers/irqchip
2019-02-19 20:02:17 +05:30
irq-davinci-cp-intc.c
irqchip: davinci-cp-intc: move the driver to drivers/irqchip
2019-02-19 20:03:42 +05:30
irq-digicolor.c
irqchip: Convert to using %pOF instead of full_name
2017-08-23 10:09:28 +01:00
irq-dw-apb-ictl.c
genirq: Fix various typos in comments
2018-12-18 14:22:28 +01:00
irq-eznps.c
irqchip/eznps: Drop pointless static qualifier in nps400_of_init()
2016-10-19 14:24:36 +02:00
irq-ftintc010.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irq-gic-common.c
irqchip/gic: Skip DT quirks when evaluating IIDR-based quirks
2019-08-20 10:23:35 +01:00
irq-gic-common.h
irqchip/gic: Prepare for more than 16 PPIs
2019-08-20 10:23:34 +01:00
irq-gic-pm.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
irq-gic-realview.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irq-gic-v2m.c
PCI: Remove unused includes and superfluous struct declaration
2019-11-21 07:49:29 -06:00
irq-gic-v3-its-fsl-mc-msi.c
irqchip/gic-v3-its: Move minimum LPI requirements to individual busses
2018-07-16 14:22:19 +01:00
irq-gic-v3-its-pci-msi.c
PCI: Remove unused includes and superfluous struct declaration
2019-11-21 07:49:29 -06:00
irq-gic-v3-its-platform-msi.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
irq-gic-v3-its.c
irqchip/gic-v3-its: Balance initial LPI affinity across CPUs
2020-05-20 11:00:00 +01:00
irq-gic-v3-mbi.c
irqchip/gic-v3-mbi: Don't map the MSI page in mbi_compose_m{b, s}i_msg()
2019-05-03 15:30:03 +01:00
irq-gic-v3.c
irqchip/gic-v3: Fix missing "__init" for gic_smp_init()
2020-05-18 10:28:30 +01:00
irq-gic-v4.c
irqchip/gic-v4.1: Add VSGI property setup
2020-03-24 12:15:51 +00:00
irq-gic.c
irqchip/gic: Prepare for more than 16 PPIs
2019-08-20 10:23:34 +01:00
irq-goldfish-pic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-hip04.c
irqchip/gic: Prepare for more than 16 PPIs
2019-08-20 10:23:34 +01:00
irq-i8259.c
irqchip: Replace setup_irq() by request_irq()
2020-03-08 14:25:46 +00:00
irq-imgpdc.c
irqchip: Remove dev_err() usage after platform_get_irq()
2019-08-20 10:35:55 +01:00
irq-imx-gpcv2.c
irqchip fixes for 5.3
2019-08-01 20:21:00 +02:00
irq-imx-intmux.c
irqchip: Add NXP INTMUX interrupt multiplexer support
2020-01-20 19:10:05 +00:00
irq-imx-irqsteer.c
irqchip/imx-irqsteer: Use devm_platform_ioremap_resource() to simplify code
2019-04-29 15:45:00 +01:00
irq-ingenic-tcu.c
irqchip/ingenic: Add support for TCU of X1000.
2020-03-22 11:52:52 +00:00
irq-ingenic.c
irqchip: Replace setup_irq() by request_irq()
2020-03-08 14:25:46 +00:00
irq-ixp4xx.c
irqchip/ixp4xx: Register the base PA instead of its VA in fwnode
2019-08-07 14:24:41 +01:00
irq-jcore-aic.c
irqchip/jcore: Fix lost per-cpu interrupts
2016-10-14 14:26:55 +02:00
irq-keystone.c
irqchip: Remove dev_err() usage after platform_get_irq()
2019-08-20 10:35:55 +01:00
irq-loongson-htpic.c
irqchip: Add driver for Loongson-3 HyperTransport PIC controller
2020-03-25 10:56:43 +01:00
irq-loongson-liointc.c
irqchip: loongson-liointc: Workaround LPC IRQ Errata
2020-03-25 10:56:00 +01:00
irq-lpc32xx.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 159
2019-05-30 11:26:37 -07:00
irq-ls1x.c
irqchip/irq-ls1x: Missing error code in ls1x_intc_of_init()
2019-04-05 14:37:56 +02:00
irq-ls-extirq.c
irqchip: Add support for Layerscape external interrupt lines
2019-11-10 18:47:49 +00:00
irq-ls-scfg-msi.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-madera.c
irqchip/madera: Drop GPIO includes
2019-01-17 17:04:24 +00:00
irq-mbigen.c
irqchip/mbigen: Free msi_desc on device teardown
2020-04-17 08:59:27 +01:00
irq-meson-gpio.c
irqchip/meson-gpio: Fix HARDIRQ-safe -> HARDIRQ-unsafe lock order
2020-04-17 08:59:29 +01:00
irq-mips-cpu.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-mips-gic.c
remove ioremap_nocache and devm_ioremap_nocache
2020-01-06 09:45:59 +01:00
irq-mmp.c
irqchip/mmp: Coexist with GIC root IRQ controller
2019-08-30 15:23:30 +01:00
irq-mscc-ocelot.c
irqchhip: Convert to using %pOFn instead of device_node.name
2018-12-13 09:35:56 +00:00
irq-mtk-cirq.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
irq-mtk-sysirq.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
irq-mvebu-gicp.c
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
irq-mvebu-icu.c
irqchip/irq-mvebu-icu: Make legacy_bindings static
2020-04-17 08:59:29 +01:00
irq-mvebu-odmi.c
irqchip/gic: Return IRQ_SET_MASK_OK_DONE in the set_affinity method
2016-02-19 15:42:29 +00:00
irq-mvebu-pic.c
irqchip/mvebu-pic: New driver for Marvell Armada 7K/8K PIC
2016-08-22 22:58:27 +00:00
irq-mvebu-sei.c
irqchip/irq-mvebu-sei: Make mvebu_sei_ap806_caps static
2019-03-21 16:43:00 +01:00
irq-mxs.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
irq-nvic.c
irqchip/nvic: Use irq_domain_translate_onecell instead of custom func
2020-01-20 09:24:47 +00:00
irq-omap-intc.c
irqchip/irq-omap-intc: Do not statically initialize variables
2017-10-16 21:05:14 +02:00
irq-ompic.c
irqchip/ompic: fix return value check in ompic_of_init()
2018-01-04 11:13:22 +00:00
irq-or1k-pic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-orion.c
irqchip: Convert to using %pOFn instead of device_node.name
2018-11-27 10:54:17 -06:00
irq-partition-percpu.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
irq-pic32-evic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-rda-intc.c
irqchip/irq-rda-intc: Fix return value check in rda8810_intc_init()
2018-12-18 12:55:23 +00:00
irq-renesas-h8s.c
genirq: Fix various typos in comments
2018-12-18 14:22:28 +01:00
irq-renesas-h8300h.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irq-renesas-intc-irqpin.c
irqchip/renesas-intc-irqpin: Restore devm_ioremap() alignment
2020-03-08 14:25:46 +00:00
irq-renesas-irqc.c
irqchip/renesas-irqc: Use proper irq_chip name and parent
2019-06-11 12:22:42 +01:00
irq-renesas-rza1.c
irqchip/renesas-rza1: Fix an use-after-free in rza1_irqc_probe()
2019-07-26 14:40:01 +01:00
irq-s3c24xx.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
irq-sa11x0.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-sifive-plic.c
irqchip/sifive-plic: Remove incorrect requirement about number of irq contexts
2020-05-18 10:28:30 +01:00
irq-sirfsoc.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4
2019-05-21 11:28:40 +02:00
irq-sni-exiu.c
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 11:01:13 -07:00
irq-st.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-stm32-exti.c
irqchip/stm32: Add irq retrigger support
2020-03-08 14:25:45 +00:00
irq-sun4i.c
irqchip/sun4i: Add support for Allwinner ARMv5 F1C100s
2018-12-13 09:35:58 +00:00
irq-sunxi-nmi.c
irqchip/sunxi-nmi: Support sun6i-a31-r-intc compatible
2017-06-22 14:08:17 +01:00
irq-tango.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-tb10x.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
irq-tegra.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282
2019-06-05 17:36:37 +02:00
irq-ti-sci-inta.c
irqchip/ti-sci-inta: Fix processing of masked irqs
2020-04-17 08:59:28 +01:00
irq-ti-sci-intr.c
irqchip/ti-sci-intr: Add support for Interrupt Router driver
2019-05-01 10:48:56 +01:00
irq-ts4800.c
irqchip/ts4800: Make ts4800_ic_ops static const
2016-02-18 02:09:18 +00:00
irq-uniphier-aidet.c
irqchip/uniphier-aidet: Use devm_platform_ioremap_resource()
2019-09-05 09:28:13 +01:00
irq-versatile-fpga.c
irqchip/versatile-fpga: Apply clear-mask earlier
2020-03-22 11:52:16 +00:00
irq-vf610-mscm-ir.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-vic.c
irqchip: vic: Support cascaded VIC in device tree
2020-03-08 14:25:45 +00:00
irq-vt8500.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
irq-xilinx-intc.c
Revert "irqchip/xilinx: Enable generic irq multi handler"
2020-04-01 09:12:24 +01:00
irq-xtensa-mx.c
drivers/irqchip: xtensa-mx: fix mask and unmask
2019-01-26 02:02:15 -08:00
irq-xtensa-pic.c
drivers/irqchip: xtensa: add warning to irq_retrigger
2019-01-26 02:02:14 -08:00
irq-zevio.c
irqchip: Remove redundant semicolon after while
2019-11-10 18:47:44 +00:00
irqchip.c
irqchip / GIC: Convert the GIC driver to ACPI probing
2015-10-01 02:18:38 +02:00
Kconfig
MIPS updates for v5.7:
2020-03-31 08:51:45 -07:00
Makefile
irqchip: Add driver for Loongson-3 HyperTransport PIC controller
2020-03-25 10:56:43 +01:00
qcom-irq-combiner.c
irqchip/qcom-irq-combiner: Replace zero-length array with flexible-array member
2020-03-22 11:52:52 +00:00
qcom-pdc.c
irqchip/qcom-pdc: Add irqchip set/get state calls
2019-11-16 10:22:01 +00:00
spear-shirq.c
remove lots of IS_ERR_VALUE abuses
2016-05-27 15:26:11 -07:00