mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 20:53:53 +08:00
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__
|
|
#define __ARCH_SPARC64_PERCPU__
|
|
|
|
#include <linux/compiler.h>
|
|
|
|
register unsigned long __local_per_cpu_offset asm("g5");
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
extern void real_setup_per_cpu_areas(void);
|
|
|
|
extern unsigned long __per_cpu_base;
|
|
extern unsigned long __per_cpu_shift;
|
|
#define __per_cpu_offset(__cpu) \
|
|
(__per_cpu_base + ((unsigned long)(__cpu) << __per_cpu_shift))
|
|
#define per_cpu_offset(x) (__per_cpu_offset(x))
|
|
|
|
#define __my_cpu_offset __local_per_cpu_offset
|
|
|
|
#else /* ! SMP */
|
|
|
|
#define real_setup_per_cpu_areas() do { } while (0)
|
|
|
|
#endif /* SMP */
|
|
|
|
#include <asm-generic/percpu.h>
|
|
|
|
#endif /* __ARCH_SPARC64_PERCPU__ */
|