diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2021-10-19 18:17:17 +0100 |
|---|---|---|
| committer | Mark Rutland <mark.rutland@arm.com> | 2021-10-25 10:05:31 +0100 |
| commit | a7b0872e964cf306fe26d9d49585a90486e32fdf (patch) | |
| tree | 4e54d8590442543dae9c040900d8a9c9ad579055 /arch/arm/kernel/entry-armv.S | |
| parent | 2fe35f8ee726466f0898ba60c5868c6f9a1ac566 (diff) | |
irq: arm: perform irqentry in entry code
In preparation for removing HANDLE_DOMAIN_IRQ_IRQENTRY, have arch/arm
perform all the irqentry accounting in its entry code.
For configurations with CONFIG_GENERIC_IRQ_MULTI_HANDLER, we can use
generic_handle_arch_irq(). Other than asm_do_IRQ(), all C calls to
handle_IRQ() are from irqchip handlers which will be called from
generic_handle_arch_irq(), so to avoid double accounting IRQ entry, the
entry logic is moved from handle_IRQ() into asm_do_IRQ().
For ARMv7M the entry assembly is tightly coupled with the NVIC irqchip, and
while the entry code should logically live under arch/arm/, moving the
entry logic there makes things more convoluted. So for now, place the
entry logic in the NVIC irqchip, but separated into a separate
function to make the split of responsibility clear.
For all other configurations without CONFIG_GENERIC_IRQ_MULTI_HANDLER,
IRQ entry is already handled in arch code, and requires no changes.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Vladimir Murzin <vladimir.murzin@arm.com> # ARMv7M
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/arm/kernel/entry-armv.S')
| -rw-r--r-- | arch/arm/kernel/entry-armv.S | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index 241b73d64df7..3d0b6169ab86 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -38,14 +38,11 @@ */ .macro irq_handler #ifdef CONFIG_GENERIC_IRQ_MULTI_HANDLER - ldr r1, =handle_arch_irq mov r0, sp - badr lr, 9997f - ldr pc, [r1] + bl generic_handle_arch_irq #else arch_irq_handler_default #endif -9997: .endm .macro pabt_helper |