diff options
| author | Mike Travis <travis@sgi.com> | 2009-01-11 09:24:07 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-11 21:13:38 +0300 |
| commit | 9332fccdedf8e09448f3b69b624211ae879f6c45 (patch) | |
| tree | 81f74838f7c5388dc83a3cfd8009a22e223b4888 /arch/x86/include/asm/apicnum.h | |
| parent | 0fa0ebbf15addc1be8f73325d809c8547a9de304 (diff) | |
| download | linux-9332fccdedf8e09448f3b69b624211ae879f6c45.tar.xz | |
irq: initialize nr_irqs based on nr_cpu_ids
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: Mike Travis <travis@sgi.com>
Diffstat (limited to 'arch/x86/include/asm/apicnum.h')
| -rw-r--r-- | arch/x86/include/asm/apicnum.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/include/asm/apicnum.h b/arch/x86/include/asm/apicnum.h new file mode 100644 index 000000000000..82f613c607ce --- /dev/null +++ b/arch/x86/include/asm/apicnum.h @@ -0,0 +1,12 @@ +#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 */ |