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x86: change __setup_vector_irq with setup_vector_irq

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We create a version of it for i386, and then take the CONFIG_X86_64
ifdef out of the game. We could create a __setup_vector_irq for i386,
but it would incur in an unnecessary lock taking. Moreover, it is better
practice to only export setup_vector_irq anyway.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Glauber Costa 2008-05-28 20:34:19 -07:00 committed by Ingo Molnar
parent 86e430edf4
commit 3fde690011
4 changed files with 16 additions and 11 deletions
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5
arch/x86/kernel/io_apic_32.c
View File

@ -1207,6 +1207,11 @@ static int assign_irq_vector(int irq)
return vector;
}
void setup_vector_irq(int cpu)
{
}
static struct irq_chip ioapic_chip;
#define IOAPIC_AUTO -1

9
arch/x86/kernel/io_apic_64.c
View File

@ -801,7 +801,7 @@ static void __clear_irq_vector(int irq)
cpus_clear(cfg->domain);
}
void __setup_vector_irq(int cpu)
static void __setup_vector_irq(int cpu)
{
/* Initialize vector_irq on a new cpu */
/* This function must be called with vector_lock held */
@ -824,6 +824,13 @@ void __setup_vector_irq(int cpu)
}
}
void setup_vector_irq(int cpu)
{
spin_lock(&vector_lock);
__setup_vector_irq(smp_processor_id());
spin_unlock(&vector_lock);
}
static struct irq_chip ioapic_chip;

11
arch/x86/kernel/smpboot.c
View File

@ -329,15 +329,8 @@ static void __cpuinit start_secondary(void *unused)
* smp_call_function().
*/
lock_ipi_call_lock();
#ifdef CONFIG_X86_64
spin_lock(&vector_lock);
/* Setup the per cpu irq handling data structures */
__setup_vector_irq(smp_processor_id());
/*
* Allow the master to continue.
*/
spin_unlock(&vector_lock);
#ifdef CONFIG_X86_IO_APIC
setup_vector_irq(smp_processor_id());
#endif
cpu_set(smp_processor_id(), cpu_online_map);
unlock_ipi_call_lock();

2
include/asm-x86/hw_irq.h
View File

@ -97,9 +97,9 @@ extern void (*const interrupt[NR_IRQS])(void);
#else
typedef int vector_irq_t[NR_VECTORS];
DECLARE_PER_CPU(vector_irq_t, vector_irq);
extern void __setup_vector_irq(int cpu);
extern spinlock_t vector_lock;
#endif
extern void setup_vector_irq(int cpu);
#endif /* !ASSEMBLY_ */