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Subject[PATCH v9 09/12] x86/init: add intr_mode_init to x86_init_ops
Date
X86 and XEN initialize interrupt delivery mode in different way.

Ordinary conditional function calls will make the code mess.

Add an unconditional x86_init_ops function which defaults to the
standard function and can be overridden by the early platform code.

Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
---
arch/x86/include/asm/x86_init.h | 2 ++
arch/x86/kernel/apic/apic.c | 2 +-
arch/x86/kernel/smpboot.c | 2 +-
arch/x86/kernel/x86_init.c | 1 +
4 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 7ba7e90..f45acdf 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -50,11 +50,13 @@ struct x86_init_resources {
* are set up.
* @intr_init: interrupt init code
* @trap_init: platform specific trap setup
+ * @intr_mode_init: interrupt delivery mode setup
*/
struct x86_init_irqs {
void (*pre_vector_init)(void);
void (*intr_init)(void);
void (*trap_init)(void);
+ void (*intr_mode_init)(void);
};

/**
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index efc5fbd..8dbcff2 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -2423,7 +2423,7 @@ void __init apic_bsp_setup(bool upmode)
#ifdef CONFIG_UP_LATE_INIT
void __init up_late_init(void)
{
- apic_intr_mode_init();
+ x86_init.irqs.intr_mode_init();

if (apic_intr_mode == APIC_PIC)
return;
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index fa535d4..76fc857 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1293,7 +1293,7 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)

set_cpu_sibling_map(0);

- apic_intr_mode_init();
+ x86_init.irqs.intr_mode_init();

smp_sanity_check();

diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index a088b2c..a7889b9 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -55,6 +55,7 @@ struct x86_init_ops x86_init __initdata = {
.pre_vector_init = init_ISA_irqs,
.intr_init = native_init_IRQ,
.trap_init = x86_init_noop,
+ .intr_mode_init = apic_intr_mode_init
},

.oem = {
--
2.5.5


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