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smp, generic: introduce arch_disable_smp_support() instead of disable_ioapic_setup()

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Impact: cleanup

disable_ioapic_setup() in init/main.c is ugly as the function is
x86-specific. The #ifdef inline prototype there is ugly too.

Replace it with a generic arch_disable_smp_support() function - which
has a weak alias for non-x86 architectures and for non-ioapic x86 builds.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-01-31 03:36:17 +01:00
parent d8106d2e24
commit 65a4e574d2
6 changed files with 24 additions and 20 deletions
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12
init/main.c
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@ -136,14 +136,14 @@ unsigned int __initdata setup_max_cpus = NR_CPUS;
* greater than 0, limits the maximum number of CPUs activated in
* SMP mode to <NUM>.
*/
#ifndef CONFIG_X86_IO_APIC
static inline void disable_ioapic_setup(void) {};
#endif
void __weak arch_disable_smp_support(void) { }
static int __init nosmp(char *str)
{
setup_max_cpus = 0;
disable_ioapic_setup();
arch_disable_smp_support();
return 0;
}
@ -153,14 +153,14 @@ static int __init maxcpus(char *str)
{
get_option(&str, &setup_max_cpus);
if (setup_max_cpus == 0)
disable_ioapic_setup();
arch_disable_smp_support();
return 0;
}
early_param("maxcpus", maxcpus);
#else
#define setup_max_cpus NR_CPUS
const unsigned int setup_max_cpus = NR_CPUS;
#endif
/*