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[MIPS] Fix computation of {PGD,PMD,PTE}_T_LOG2. 

For the generation of asm-offset.h to work these need to be evaulatable
by gcc as a constant expression.  This issue did exist for a while but
didn't bite because they're only in asm-offset.h for debugging purposes.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2007-08-01 15:25:28 +01:00
parent 4c8081e469
commit 5ff974720a
1 changed files with 3 additions and 3 deletions
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6
include/asm-mips/pgtable.h
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@ -168,9 +168,9 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt
#define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0)
#endif
#define PGD_T_LOG2 ffz(~sizeof(pgd_t))
#define PMD_T_LOG2 ffz(~sizeof(pmd_t))
#define PTE_T_LOG2 ffz(~sizeof(pte_t))
#define PGD_T_LOG2 (__builtin_ffs(sizeof(pgd_t)) - 1)
#define PMD_T_LOG2 (__builtin_ffs(sizeof(pmd_t)) - 1)
#define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1)
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];