mirror of
https://github.com/checkpoint-restore/criu.git
synced 2026-01-23 02:14:37 +00:00
70833bcf29
Acked-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Adrian Reber <areber@redhat.com>
44 lines
986 B
C
44 lines
986 B
C
#ifndef __CR_ASM_PAGE_H__
|
|
#define __CR_ASM_PAGE_H__
|
|
|
|
#define ARCH_HAS_LONG_PAGES
|
|
|
|
#ifndef CR_NOGLIBC
|
|
#include <string.h> /* ffsl() */
|
|
#include <unistd.h> /* _SC_PAGESIZE */
|
|
|
|
extern unsigned __page_size;
|
|
extern unsigned __page_shift;
|
|
|
|
static inline unsigned page_size(void)
|
|
{
|
|
if (!__page_size)
|
|
__page_size = sysconf(_SC_PAGESIZE);
|
|
return __page_size;
|
|
}
|
|
|
|
static inline unsigned page_shift(void)
|
|
{
|
|
if (!__page_shift)
|
|
__page_shift = (ffsl(page_size()) - 1);
|
|
return __page_shift;
|
|
}
|
|
|
|
/*
|
|
* Don't add ifdefs for PAGE_SIZE: if any header defines it as a constant
|
|
* on aarch64, then we need refrain using PAGE_SIZE in criu and use
|
|
* page_size() across sources (as it may differ on aarch64).
|
|
*/
|
|
#define PAGE_SIZE page_size()
|
|
#define PAGE_MASK (~(PAGE_SIZE - 1))
|
|
#define PAGE_SHIFT page_shift()
|
|
|
|
#define PAGE_PFN(addr) ((addr) / PAGE_SIZE)
|
|
|
|
#else /* CR_NOGLIBC */
|
|
|
|
extern unsigned page_size(void);
|
|
#define PAGE_SIZE page_size()
|
|
|
|
#endif /* CR_NOGLIBC */
|
|
#endif /* __CR_ASM_PAGE_H__ */
|