kernel/linux.git/arch/arc/include/asm/irq.h, branch linux-7.0.y

ARC: Fix typos

2024-04-02T01:40:39+00:00

Fix typos, most reported by "codespell arch/arc". Only touches comments, no code changes. Signed-off-by: Bjorn Helgaas Signed-off-by: Vineet Gupta

ARC: -Wmissing-prototype warning fixes

2023-08-13T23:53:02+00:00

Anrd reported [1] new compiler warnings due to -Wmissing-protype. These are for non static functions mostly used in asm code hence not exported already. Fix this by adding the prototypes. [1] https://lore.kernel.org/lkml/20230810141947.1236730-1-arnd@kernel.org Reviewed-by: Arnd Bergmann Signed-off-by: Vineet Gupta

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Enrico Weigelt Reviewed-by: Kate Stewart Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman

ARCv2: intc: Use runtime value of irq count for setting up intc

2017-02-06T17:37:57+00:00

Signed-off-by: Vineet Gupta

ARCv2: intc: Rework the build time irq count information

2017-02-06T17:37:57+00:00

Currently Kconfig knob ARC_NUMBER_OF_INTERRUPTS is used as indicator of hard irq count. But it is flawed that it doesn't affect - NR_IRQS : for number of virtual interrupts - NR_CPU_IRQS : for number of hardware interrupts Moreover the actual hardware irq count might still not be same as ARC_NUMBER_OF_INTERRUPTS. So use the information availble in the Build Configuration Registers and get rid of the Kconfig option. We still need "some" build time info about irq count to set up sufficient number of vector table entries. This is done with a sufficiently large NR_CPU_IRQS which will eventually be used soley for that purpose (subsequent patches will remove its usage elsewhere) So to summarize what this patch does: * NR_CPU_IRQS defines a maximum number of hardware interrupts. * Remove ARC_NUMBER_OF_INTERRUPTS option and create interrupts table for all possible hardware interrupts. * Increase a maximum number of virtual IRQs to 512. ARCv2 can support 240 interrupts in the core interrupts controllers and 128 interrupts in IDU. Thus 512 virtual IRQs must be enough for most configurations of boards. This patch leads to NR_CPU_IRQS in 2 places, to reduce the overall churn. The next patch will remove the 2nd definition anyways. Signed-off-by: Yuriy Kolerov Signed-off-by: Vineet Gupta [vgupta: reworked the changelog a bit]

ARC: [intc-*]: confine NR_CPU_IRQS to intc code

2017-02-06T17:37:57+00:00

And even this willl change in subsequent patches where we resort to using run time info instead... Signed-off-by: Vineet Gupta

ARC: irq: export some IRQs again

2016-05-09T04:02:30+00:00

This will be needed for switching to linear irq domain as irq_create_mapping() called by intr code needs the IRQ numbers in addition to existing usage in mcip.c for requesting the irq Signed-off-by: Vineet Gupta

ARC: clockevent: DT based probe

2016-05-09T04:02:29+00:00

- timer frequency is derived from DT (no longer rely on top level DT "clock-frequency" probed early and exported by asm/clk.h) - TIMER0_IRQ need not be exported across arch code, confined to intc as it is property of same - Any failures in clockevent setup are considered pedantic and system panic()'s as there is no generic fallback (unlike clocksource where a jiffies based soft clocksource always exists) Acked-by: Daniel Lezcano Signed-off-by: Vineet Gupta

ARC: clockevent: switch to cpu notifier for clockevent setup

2016-05-09T04:02:28+00:00

ARC Timers so far have been handled as "legacy" w/o explicit description in DT. This poses challenge for newer platforms wanting to use them. This series will eventually help move timers over to DT. This patch does a small change of using a CPU notifier to set clockevent on non-boot CPUs. So explicit setup is done only on boot CPU (which will later be done by DT) Signed-off-by: Noam Camus [vgupta: broken off from a bigger patch] Signed-off-by: Vineet Gupta

ARC: opencode arc_request_percpu_irq

2016-05-09T04:02:28+00:00

- The idea is to remove the API usage since it has a subltle design flaw - relies on being called on cpu0 first. This is true for some early per cpu irqs such as TIMER/IPI, but not for late probed per cpu peripherals such a perf. And it's usage in perf has already bitten us once: see c6317bc7c5ab ("ARCv2: perf: Ensure perf intr gets enabled on all cores") where we ended up open coding it anyways - The seeming duplication will go away once we start using cpu notifier for timer setup Signed-off-by: Vineet Gupta