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[IA64] Enable percpu vector domain for IA64_GENERIC 

Add per-CPU vector domain support for IA64_GENERIC. It is enabled by
adding the "vector=percpu" boot option.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Yasuaki Ishimatsu 2007-07-17 21:22:55 +09:00 committed by Tony Luck
parent cd378f18cf
commit d080d397f9
2 changed files with 29 additions and 0 deletions
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3
Documentation/kernel-parameters.txt
View File

@ -1859,6 +1859,9 @@ and is between 256 and 4096 characters. It is defined in the file
vdso=1: enable VDSO (default)
vdso=0: disable VDSO mapping
vector= [IA-64,SMP]
vector=percpu: enable percpu vector domain
video= [FB] Frame buffer configuration
See Documentation/fb/modedb.txt.

26
arch/ia64/kernel/irq_ia64.c
View File

@ -267,10 +267,36 @@ void __setup_vector_irq(int cpu)
}
}
#if defined(CONFIG_IA64_GENERIC)
static enum vector_domain_type {
VECTOR_DOMAIN_NONE,
VECTOR_DOMAIN_PERCPU
} vector_domain_type = VECTOR_DOMAIN_NONE;
static cpumask_t vector_allocation_domain(int cpu)
{
if (vector_domain_type == VECTOR_DOMAIN_PERCPU)
return cpumask_of_cpu(cpu);
return CPU_MASK_ALL;
}
static int __init parse_vector_domain(char *arg)
{
if (!arg)
return -EINVAL;
if (!strcmp(arg, "percpu")) {
vector_domain_type = VECTOR_DOMAIN_PERCPU;
no_int_routing = 1;
}
return 1;
}
early_param("vector", parse_vector_domain);
#else
static cpumask_t vector_allocation_domain(int cpu)
{
return CPU_MASK_ALL;
}
#endif
void destroy_and_reserve_irq(unsigned int irq)