nommu: use MAP_UNINITIALIZE for mallocs

Now that the kernel supports MAP_UNINITIALIZE, have the malloc places use
it to get real uninitialized memory on no-mmu systems.  This avoids a lot
of normally useless overhead involved in zeroing out all of the memory
(sometimes multiple times).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/ldso/ldso/dl-elf.c b/ldso/ldso/dl-elf.c
index e7cb138d4..6bf5bbd6a 100644
--- a/ldso/ldso/dl-elf.c
+++ b/ldso/ldso/dl-elf.c
@@ -376,7 +376,7 @@ struct elf_resolve *_dl_load_elf_shared_library(int secure,
 		}
 	}
 	header = _dl_mmap((void *) 0, _dl_pagesize, PROT_READ | PROT_WRITE,
-			MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+			MAP_PRIVATE | MAP_ANONYMOUS | MAP_UNINITIALIZE, -1, 0);
 	if (_dl_mmap_check_error(header)) {
 		_dl_dprintf(2, "%s:%i: can't map '%s'\n", _dl_progname, __LINE__, libname);
 		_dl_internal_error_number = LD_ERROR_MMAP_FAILED;