eal: add 64-bit log2 function

[dpdk.git] / lib / librte_eal / linuxapp / eal / eal_memalloc.c

diff --git a/lib/librte_eal/linuxapp/eal/eal_memalloc.c b/lib/librte_eal/linuxapp/eal/eal_memalloc.c
index eef140b..60a0a68 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal_memalloc.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memalloc.c
@@ -213,28 +213,13 @@ get_file_size(int fd)
        return st.st_size;
 }
 
-static inline uint32_t
-bsf64(uint64_t v)
-{
-       return (uint32_t)__builtin_ctzll(v);
-}
-
-static inline uint32_t
-log2_u64(uint64_t v)
-{
-       if (v == 0)
-               return 0;
-       v = rte_align64pow2(v);
-       return bsf64(v);
-}
-
 static int
 pagesz_flags(uint64_t page_sz)
 {
        /* as per mmap() manpage, all page sizes are log2 of page size
         * shifted by MAP_HUGE_SHIFT
         */
-       int log2 = log2_u64(page_sz);
+       int log2 = rte_log2_u64(page_sz);
        return log2 << RTE_MAP_HUGE_SHIFT;
 }