From: Thomas Gleixner apic.h does not get included on UP compiles. That way the APICTIMER_STOPS_ON_C3 is not there and UP boxen have no support for timer broadcasting. This was never noticed, because the lapic timer is only used for profiling on UP. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar Cc: Roman Zippel Cc: john stultz Cc: Len Brown Cc: Andi Kleen Signed-off-by: Andrew Morton --- drivers/acpi/processor_idle.c | 10 ++++++++++ 1 file changed, 10 insertions(+) Index: linux-2.6.20-rc4-mm1-bo/drivers/acpi/processor_idle.c =================================================================== --- linux-2.6.20-rc4-mm1-bo.orig/drivers/acpi/processor_idle.c +++ linux-2.6.20-rc4-mm1-bo/drivers/acpi/processor_idle.c @@ -40,6 +40,16 @@ #include /* need_resched() */ #include +/* + * Include the apic definitions for x86 to have the APIC timer related defines + * available also for UP (on SMP it gets magically included via linux/smp.h). + * asm/acpi.h is not an option, as it would require more include magic. Also + * creating an empty asm-ia64/apic.h would just trade pest vs. cholera. + */ +#ifdef CONFIG_X86 +#include +#endif + #include #include -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/