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3afc620229
Sparc64 has a way of providing the base address for the per cpu area of the currently executing processor in a global register. Sparc64 also provides a way to calculate the address of a per cpu area from a base address instead of performing an array lookup. Cc: David Miller <davem@davemloft.net> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
29 lines
647 B
C
29 lines
647 B
C
#ifndef __ARCH_SPARC64_PERCPU__
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#define __ARCH_SPARC64_PERCPU__
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#include <linux/compiler.h>
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register unsigned long __local_per_cpu_offset asm("g5");
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#ifdef CONFIG_SMP
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extern void real_setup_per_cpu_areas(void);
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extern unsigned long __per_cpu_base;
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extern unsigned long __per_cpu_shift;
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#define __per_cpu_offset(__cpu) \
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(__per_cpu_base + ((unsigned long)(__cpu) << __per_cpu_shift))
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#define per_cpu_offset(x) (__per_cpu_offset(x))
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#define __my_cpu_offset __local_per_cpu_offset
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#else /* ! SMP */
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#define real_setup_per_cpu_areas() do { } while (0)
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#endif /* SMP */
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#include <asm-generic/percpu.h>
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#endif /* __ARCH_SPARC64_PERCPU__ */
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