diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2007-08-01 15:25:28 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-08-27 02:16:48 +0100 |
| commit | 5ff974720abec255c17af6f3732dd410d364e367 (patch) | |
| tree | 8656406ff66bd84058eddb8bbd1d7e5473985a43 /include/asm-mips/pgtable.h | |
| parent | 4c8081e4696c7afc61930e4a49a6fa55c545b7e0 (diff) | |
[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>
Diffstat (limited to 'include/asm-mips/pgtable.h')
| -rw-r--r-- | include/asm-mips/pgtable.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/asm-mips/pgtable.h b/include/asm-mips/pgtable.h index 2e2d70d13ff..e2fb9dbac3f 100644 --- a/include/asm-mips/pgtable.h +++ b/include/asm-mips/pgtable.h @@ -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]; |