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Commit 4c301f9b authored by Palmer Dabbelt's avatar Palmer Dabbelt Committed by Thomas Gleixner
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ARM: Convert to GENERIC_IRQ_MULTI_HANDLER 



Converts the ARM interrupt code to use the recently added
GENERIC_IRQ_MULTI_HANDLER, which is essentially just a copy of ARM's
existhing MULTI_IRQ_HANDLER.  The only changes are:

* handle_arch_irq is now defined in a generic C file instead of an
  arm-specific assembly file.
 
* handle_arch_irq is now marked as __ro_after_init.

Signed-off-by: default avatarPalmer Dabbelt <palmer@sifive.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: linux@armlinux.org.uk
Cc: catalin.marinas@arm.com
Cc: Will Deacon <will.deacon@arm.com>
Cc: jonas@southpole.se
Cc: stefan.kristiansson@saunalahti.fi
Cc: shorne@gmail.com
Cc: jason@lakedaemon.net
Cc: marc.zyngier@arm.com
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: nicolas.pitre@linaro.org
Cc: vladimir.murzin@arm.com
Cc: keescook@chromium.org
Cc: jinb.park7@gmail.com
Cc: yamada.masahiro@socionext.com
Cc: alexandre.belloni@bootlin.com
Cc: pombredanne@nexb.com
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: kstewart@linuxfoundation.org
Cc: jhogan@kernel.org
Cc: mark.rutland@arm.com
Cc: ard.biesheuvel@linaro.org
Cc: james.morse@arm.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: openrisc@lists.librecores.org
Link: https://lkml.kernel.org/r/20180622170126.6308-3-palmer@sifive.com
parent 08fb550c

arch/arm/Kconfig

+7 −12
Original line number Diff line number Diff line
@@ -337,8 +337,8 @@ config ARCH_MULTIPLATFORM 
	select TIMER_OF

	select COMMON_CLK

	select GENERIC_CLOCKEVENTS

	select GENERIC_IRQ_MULTI_HANDLER

	select MIGHT_HAVE_PCI

	select MULTI_IRQ_HANDLER

	select PCI_DOMAINS if PCI

	select SPARSE_IRQ

	select USE_OF
@@ -465,9 +465,9 @@ config ARCH_DOVE 
	bool "Marvell Dove"

	select CPU_PJ4

	select GENERIC_CLOCKEVENTS

	select GENERIC_IRQ_MULTI_HANDLER

	select GPIOLIB

	select MIGHT_HAVE_PCI

	select MULTI_IRQ_HANDLER

	select MVEBU_MBUS

	select PINCTRL

	select PINCTRL_DOVE
@@ -512,8 +512,8 @@ config ARCH_LPC32XX 
	select COMMON_CLK

	select CPU_ARM926T

	select GENERIC_CLOCKEVENTS

	select GENERIC_IRQ_MULTI_HANDLER

	select GPIOLIB

	select MULTI_IRQ_HANDLER

	select SPARSE_IRQ

	select USE_OF

	help
@@ -532,11 +532,11 @@ config ARCH_PXA 
	select TIMER_OF

	select CPU_XSCALE if !CPU_XSC3

	select GENERIC_CLOCKEVENTS

	select GENERIC_IRQ_MULTI_HANDLER

	select GPIO_PXA

	select GPIOLIB

	select HAVE_IDE

	select IRQ_DOMAIN

	select MULTI_IRQ_HANDLER

	select PLAT_PXA

	select SPARSE_IRQ

	help
@@ -572,11 +572,11 @@ config ARCH_SA1100 
	select CPU_FREQ

	select CPU_SA1100

	select GENERIC_CLOCKEVENTS

	select GENERIC_IRQ_MULTI_HANDLER

	select GPIOLIB

	select HAVE_IDE

	select IRQ_DOMAIN

	select ISA

	select MULTI_IRQ_HANDLER

	select NEED_MACH_MEMORY_H

	select SPARSE_IRQ

	help
@@ -590,10 +590,10 @@ config ARCH_S3C24XX 
	select GENERIC_CLOCKEVENTS

	select GPIO_SAMSUNG

	select GPIOLIB

	select GENERIC_IRQ_MULTI_HANDLER

	select HAVE_S3C2410_I2C if I2C

	select HAVE_S3C2410_WATCHDOG if WATCHDOG

	select HAVE_S3C_RTC if RTC_CLASS

	select MULTI_IRQ_HANDLER

	select NEED_MACH_IO_H

	select SAMSUNG_ATAGS

	select USE_OF
@@ -627,10 +627,10 @@ config ARCH_OMAP1 
	select CLKSRC_MMIO

	select GENERIC_CLOCKEVENTS

	select GENERIC_IRQ_CHIP

	select GENERIC_IRQ_MULTI_HANDLER

	select GPIOLIB

	select HAVE_IDE

	select IRQ_DOMAIN

	select MULTI_IRQ_HANDLER

	select NEED_MACH_IO_H if PCCARD

	select NEED_MACH_MEMORY_H

	select SPARSE_IRQ
@@ -921,11 +921,6 @@ config IWMMXT 
	  Enable support for iWMMXt context switching at run time if

	  running on a CPU that supports it.



config MULTI_IRQ_HANDLER

	bool

	help

	  Allow each machine to specify it's own IRQ handler at run time.



if !MMU

source "arch/arm/Kconfig-nommu"

endif

arch/arm/include/asm/irq.h

+0 −5
Original line number Diff line number Diff line
@@ -31,11 +31,6 @@ extern void asm_do_IRQ(unsigned int, struct pt_regs *); 
void handle_IRQ(unsigned int, struct pt_regs *);

void init_IRQ(void);



#ifdef CONFIG_MULTI_IRQ_HANDLER

extern void (*handle_arch_irq)(struct pt_regs *);

extern void set_handle_irq(void (*handle_irq)(struct pt_regs *));

#endif



#ifdef CONFIG_SMP

extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,

					   bool exclude_self);

arch/arm/include/asm/mach/arch.h

+1 −1
Original line number Diff line number Diff line
@@ -59,7 +59,7 @@ struct machine_desc { 
	void			(*init_time)(void);

	void			(*init_machine)(void);

	void			(*init_late)(void);

#ifdef CONFIG_MULTI_IRQ_HANDLER

#ifdef CONFIG_GENERIC_IRQ_MULTI_HANDLER

	void			(*handle_irq)(struct pt_regs *);

#endif

	void			(*restart)(enum reboot_mode, const char *);

arch/arm/kernel/entry-armv.S

+2 −8
Original line number Diff line number Diff line
@@ -22,7 +22,7 @@ 
#include <asm/glue-df.h>

#include <asm/glue-pf.h>

#include <asm/vfpmacros.h>

#ifndef CONFIG_MULTI_IRQ_HANDLER

#ifndef CONFIG_GENERIC_IRQ_MULTI_HANDLER

#include <mach/entry-macro.S>

#endif

#include <asm/thread_notify.h>
@@ -39,7 +39,7 @@ 
 * Interrupt handling.

 */

	.macro	irq_handler

#ifdef CONFIG_MULTI_IRQ_HANDLER

#ifdef CONFIG_GENERIC_IRQ_MULTI_HANDLER

	ldr	r1, =handle_arch_irq

	mov	r0, sp

	badr	lr, 9997f
@@ -1226,9 +1226,3 @@ vector_addrexcptn: 
	.globl	cr_alignment

cr_alignment:

	.space	4
 


#ifdef CONFIG_MULTI_IRQ_HANDLER

	.globl	handle_arch_irq

handle_arch_irq:

	.space	4

#endif

arch/arm/kernel/irq.c

+0 −10
Original line number Diff line number Diff line
@@ -102,16 +102,6 @@ void __init init_IRQ(void) 
	uniphier_cache_init();

}



#ifdef CONFIG_MULTI_IRQ_HANDLER

void __init set_handle_irq(void (*handle_irq)(struct pt_regs *))

{

	if (handle_arch_irq)

		return;



	handle_arch_irq = handle_irq;

}

#endif



#ifdef CONFIG_SPARSE_IRQ

int __init arch_probe_nr_irqs(void)

{