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  • Mike Travis's avatar
    irq: initialize nr_irqs based on nr_cpu_ids · 9332fccd
    Mike Travis authored 
    
Impact: Reduce memory usage.

This is the second half of the changes to make the irq_desc_ptrs be
variable sized based on nr_cpu_ids.  This is done by adding a new
"max_nr_irqs" macro to irq_vectors.h (and a dummy in irqnr.h) to
return a max NR_IRQS value based on NR_CPUS or nr_cpu_ids.

This necessitated moving the define of MAX_IO_APICS to a separate
file (asm/apicnum.h) so it could be included without the baggage
of the other asm/apicdef.h declarations.
Signed-off-by: default avatarMike Travis <travis@sgi.com>
    9332fccd
apicnum.h 229 Bytes
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#ifndef _ASM_X86_APICNUM_H
#define _ASM_X86_APICNUM_H

/* define MAX_IO_APICS */
#ifdef CONFIG_X86_32
# define MAX_IO_APICS 64
#else
# define MAX_IO_APICS 128
# define MAX_LOCAL_APIC 32768
#endif

#endif /* _ASM_X86_APICNUM_H */