'PAGE_OFFSET' undeclared

[ravikumarkandhi]

Hi All,

I am trying to compile MIPS kernel, i am getting an error.

/include/stt_mem.h: In function 'stt_virt_to_phys':
/include/stt_mem.h:31: error: 'PAGE_OFFSET' undeclared (first use in this function)
/include/stt_mem.h: In function 'stt_phys_to_virt':
include/stt_mem.h:39: error: 'PAGE_OFFSET' undeclared (first use in this function)

In stt_mem.h file,

static inline unsigned long stt_virt_to_phys(void *virt)
{
return __pa(virt); ------> Line 31
}

static inline void *stt_phys_to_virt(unsigned long phys)
{
return (void *)__va(phys); ------------> line 39
}

i am getting no idea, how to solve this error.

Please help me out of this problem

Thanks in advance.

[Rubberman]

PAGE_OFFSET is defined in <kernel-source-dir>/include/asm-generic/page.h as

#ifdef CONFIG_KERNEL_RAM_BASE_ADDRESS
#define PAGE_OFFSET             (CONFIG_KERNEL_RAM_BASE_ADDRESS)
#else
#define PAGE_OFFSET             (0)
#endif