aboutsummaryrefslogblamecommitdiffstats
path: root/include/asm-powerpc/sparsemem.h
blob: e8b493d52b4f68a6807ed25475262b47e4defbd7 (plain) (tree)
1
2
3
4
5
6
7
8
9
10
11

                                  
                 







                                                                              
 

                                  
 

                                                                           







                                                            

                                  

                             
                       
                                     
#ifndef _ASM_POWERPC_SPARSEMEM_H
#define _ASM_POWERPC_SPARSEMEM_H 1
#ifdef __KERNEL__

#ifdef CONFIG_SPARSEMEM
/*
 * SECTION_SIZE_BITS		2^N: how big each section will be
 * MAX_PHYSADDR_BITS		2^N: how much physical address space we have
 * MAX_PHYSMEM_BITS		2^N: how much memory we can have in that space
 */
#define SECTION_SIZE_BITS       24

#define MAX_PHYSADDR_BITS       44
#define MAX_PHYSMEM_BITS        44

#ifdef CONFIG_MEMORY_HOTPLUG
extern void create_section_mapping(unsigned long start, unsigned long end);
#ifdef CONFIG_NUMA
extern int hot_add_scn_to_nid(unsigned long scn_addr);
#else
static inline int hot_add_scn_to_nid(unsigned long scn_addr)
{
	return 0;
}
#endif /* CONFIG_NUMA */
#endif /* CONFIG_MEMORY_HOTPLUG */

#endif /* CONFIG_SPARSEMEM */

#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SPARSEMEM_H */