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Commit d080d397 authored by Yasuaki Ishimatsu's avatar Yasuaki Ishimatsu Committed by Tony Luck
Browse files

[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: default avatarKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: default avatarYasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent cd378f18

Documentation/kernel-parameters.txt

+3 −0
Original line number Original line Diff line number Diff line
@@ -1859,6 +1859,9 @@ and is between 256 and 4096 characters. It is defined in the file 
			vdso=1: enable VDSO (default)

			vdso=1: enable VDSO (default)

			vdso=0: disable VDSO mapping

			vdso=0: disable VDSO mapping





	vector=		[IA-64,SMP]

			vector=percpu: enable percpu vector domain



	video=		[FB] Frame buffer configuration

	video=		[FB] Frame buffer configuration

			See Documentation/fb/modedb.txt.

			See Documentation/fb/modedb.txt.

arch/ia64/kernel/irq_ia64.c

+26 −0
Original line number Original line Diff line number Diff line
@@ -267,11 +267,37 @@ 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)

static cpumask_t vector_allocation_domain(int cpu)

{

{

	if (vector_domain_type == VECTOR_DOMAIN_PERCPU)

		return cpumask_of_cpu(cpu);

	return CPU_MASK_ALL;

	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)

void destroy_and_reserve_irq(unsigned int irq)

{

{