Linux Kernel  3.7.1
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nr-irqs.c
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1 /*
2  * calculate
3  * NR_IRQS = max(IA64_NATIVE_NR_IRQS, XEN_NR_IRQS, FOO_NR_IRQS...)
4  * depending on config.
5  * This must be calculated before processing asm-offset.c.
6  */
7 
8 #define ASM_OFFSETS_C 1
9 
10 #include <linux/kbuild.h>
11 #include <linux/threads.h>
12 #include <asm/native/irq.h>
13 #include <asm/xen/irq.h>
14 
15 void foo(void)
16 {
17  union paravirt_nr_irqs_max {
18  char ia64_native_nr_irqs[IA64_NATIVE_NR_IRQS];
19 #ifdef CONFIG_XEN
20  char xen_nr_irqs[XEN_NR_IRQS];
21 #endif
22  };
23 
24  DEFINE(NR_IRQS, sizeof (union paravirt_nr_irqs_max));
25 }