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x86: Rework arch_disable_smp_support() for x86

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Currently arch_disable_smp_support() on x86 disables only the
support for the IOAPIC and is also compiled in if SMP-support is
not.

Therefore this function is renamed to disable_ioapic_support(),
which meets its purpose and is only compiled in the kernel
when IOAPIC support is also.

A new arch_disable_smp_support() is created in smpboot.c,
which calls disable_ioapic_support() and gets only compiled
in the kernel when SMP support is also.

Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
LKML-Reference: <1298385487-4708-3-git-send-email-henne@nachtwindheim.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Henrik Kretzschmar
2011-02-22 15:38:05 +01:00
committed by Ingo Molnar
parent b6a1432da8
commit 7167d08e78
4 changed files with 20 additions and 4 deletions
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7
arch/x86/kernel/apic/io_apic.c
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@@ -108,7 +108,10 @@ DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES);
int skip_ioapic_setup;
void arch_disable_smp_support(void)
/**
* disable_ioapic_support() - disables ioapic support at runtime
*/
void disable_ioapic_support(void)
{
#ifdef CONFIG_PCI
noioapicquirk = 1;
@@ -120,7 +123,7 @@ void arch_disable_smp_support(void)
static int __init parse_noapic(char *str)
{
/* disable IO-APIC */
arch_disable_smp_support();
disable_ioapic_support();
return 0;
}
early_param("noapic", parse_noapic);