PPC32: add definitions for fls(), pmd_free_tlb() and pte_free_tlb(),

now used in generic code.

include/asm-ppc/bitops.h

@@ -262,6 +262,18 @@ static __inline__ int ffs(int x)
 	return __ilog2(x & -x) + 1;
 }
 
+/*
+ * fls: find last (most-significant) bit set.
+ * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
+ */
+static __inline__ int fls(unsigned int x)
+{
+	int lz;
+
+	asm ("cntlzw %0,%1" : "=r" (lz) : "r" (x));
+	return 32 - lz;
+}
+
 /*
  * hweightN: returns the hamming weight (i.e. the number
  * of bits set) of a N-bit word

include/asm-ppc/pgalloc.h

@@ -20,6 +20,7 @@ extern void pgd_free(pgd_t *pgd);
  */
 #define pmd_alloc_one(mm,address)       ({ BUG(); ((pmd_t *)2); })
 #define pmd_free(x)                     do { } while (0)
+#define pmd_free_tlb(tlb,x)		do { } while (0)
 #define pgd_populate(mm, pmd, pte)      BUG()
 
 #define pmd_populate_kernel(mm, pmd, pte)	\
@@ -32,6 +33,8 @@ extern struct page *pte_alloc_one(struct mm_struct *mm, unsigned long addr);
 extern void pte_free_kernel(pte_t *pte);
 extern void pte_free(struct page *pte);
 
+#define pte_free_tlb(tlb, pte)	pte_free((pte))
+
 #define check_pgt_cache()	do { } while (0)
 
 #endif /* _PPC_PGALLOC_H */