cpumask, irq: non-x86 build failures

Ingo Molnar wrote:

> All non-x86 architectures fail to build:
>
> In file included from /home/mingo/tip/include/linux/random.h:11,
>                  from /home/mingo/tip/include/linux/stackprotector.h:6,
>                  from /home/mingo/tip/init/main.c:17:
> /home/mingo/tip/include/linux/irqnr.h:26:63: error: asm/irq_vectors.h: No such file or directory

Do not include asm/irq_vectors.h in generic code - it's not available
on all architectures.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/include/asm/apicdef.h

@@ -132,8 +132,12 @@
 #define APIC_BASE_MSR	0x800
 #define X2APIC_ENABLE	(1UL << 10)
 
-/* get MAX_IO_APICS */
-#include <asm/apicnum.h>
+#ifdef CONFIG_X86_32
+# define MAX_IO_APICS 64
+#else
+# define MAX_IO_APICS 128
+# define MAX_LOCAL_APIC 32768
+#endif
 
 /*
  * All x86-64 systems are xAPIC compatible.

include/linux/irqnr.h

@@ -23,15 +23,9 @@
 
 #else /* CONFIG_GENERIC_HARDIRQS */
 
-#include <asm/irq_vectors.h>	/* need possible max_nr_irqs() */
-
 extern int nr_irqs;
 extern struct irq_desc *irq_to_desc(unsigned int irq);
 
-# ifndef max_nr_irqs
-#  define max_nr_irqs(nr_cpus)	NR_IRQS
-# endif
-
 # define for_each_irq_desc(irq, desc)					\
 	for (irq = 0, desc = irq_to_desc(irq); irq < nr_irqs;		\
 	     irq++, desc = irq_to_desc(irq))				\

kernel/irq/handle.c

@@ -58,6 +58,11 @@ int nr_irqs = NR_IRQS;
 EXPORT_SYMBOL_GPL(nr_irqs);
 
 #ifdef CONFIG_SPARSE_IRQ
+
+#ifndef max_nr_irqs
+#define max_nr_irqs(nr_cpus)	NR_IRQS
+#endif
+
 static struct irq_desc irq_desc_init = {
 	.irq	    = -1,
 	.status	    = IRQ_DISABLED,