[PATCH v4 6/8] arm64: Use the new GENERIC_IRQ_MULTI_HANDLER

From: Palmer Dabbelt
Date: Tue Mar 27 2018 - 12:21:08 EST


It appears arm64 copied arm's GENERIC_IRQ_MULTI_HANDLER code, but made
it unconditional. I wanted to make this generic so it could be used by
the RISC-V port. This patch converts the arm64 code to use the new
generic code, which simply consists of deleting the arm64 code and
setting MULTI_IRQ_HANDLER instead.

Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxx>
---
arch/arm64/Kconfig | 5 +----
arch/arm64/include/asm/irq.h | 2 --
arch/arm64/kernel/irq.c | 10 ----------
3 files changed, 1 insertion(+), 16 deletions(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 302d0b681676..e8f7ef1157ce 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -70,6 +70,7 @@ config ARM64
select GENERIC_CPU_AUTOPROBE
select GENERIC_EARLY_IOREMAP
select GENERIC_IDLE_POLL_SETUP
+ select GENERIC_IRQ_MULTI_HANDLER
select GENERIC_IRQ_PROBE
select GENERIC_IRQ_SHOW
select GENERIC_IRQ_SHOW_LEVEL
@@ -132,7 +133,6 @@ config ARM64
select IRQ_DOMAIN
select IRQ_FORCED_THREADING
select MODULES_USE_ELF_RELA
- select MULTI_IRQ_HANDLER
select NO_BOOTMEM
select OF
select OF_EARLY_FLATTREE
@@ -276,9 +276,6 @@ config ARCH_SUPPORTS_UPROBES
config ARCH_PROC_KCORE_TEXT
def_bool y

-config MULTI_IRQ_HANDLER
- def_bool y
-
source "init/Kconfig"

source "kernel/Kconfig.freezer"
diff --git a/arch/arm64/include/asm/irq.h b/arch/arm64/include/asm/irq.h
index a0fee6985e6a..b2b0c6405eb0 100644
--- a/arch/arm64/include/asm/irq.h
+++ b/arch/arm64/include/asm/irq.h
@@ -8,8 +8,6 @@

struct pt_regs;

-extern void set_handle_irq(void (*handle_irq)(struct pt_regs *));
-
static inline int nr_legacy_irqs(void)
{
return 0;
diff --git a/arch/arm64/kernel/irq.c b/arch/arm64/kernel/irq.c
index 60e5fc661f74..780a12f59a8f 100644
--- a/arch/arm64/kernel/irq.c
+++ b/arch/arm64/kernel/irq.c
@@ -42,16 +42,6 @@ int arch_show_interrupts(struct seq_file *p, int prec)
return 0;
}

-void (*handle_arch_irq)(struct pt_regs *) = NULL;
-
-void __init set_handle_irq(void (*handle_irq)(struct pt_regs *))
-{
- if (handle_arch_irq)
- return;
-
- handle_arch_irq = handle_irq;
-}
-
#ifdef CONFIG_VMAP_STACK
static void init_irq_stacks(void)
{
--
2.16.1