Jie Zhang ea63763959 nommu: fix malloc performance by adding uninitialized flag ... The NOMMU code currently clears all anonymous mmapped memory. While this is what we want in the default case, all memory allocation from userspace under NOMMU has to go through this interface, including malloc() which is allowed to return uninitialized memory. This can easily be a significant performance penalty. So for constrained embedded systems were security is irrelevant, allow people to avoid clearing memory unnecessarily. This also alters the ELF-FDPIC binfmt such that it obtains uninitialised memory for the brk and stack region. Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Greg Ungerer <gerg@snapgear.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-12-15 08:53:24 -08:00
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backing-dev.c
bootmem.c	mm/bootmem.c: properly __init-annotate helper functions	2009-12-15 08:53:20 -08:00
bounce.c
debug-pagealloc.c
dmapool.c
fadvise.c
failslab.c
filemap_xip.c
filemap.c
fremap.c
highmem.c
hugetlb.c	hugetlb: abort a hugepage pool resize if a signal is pending	2009-12-15 08:53:24 -08:00
hwpoison-inject.c
init-mm.c
internal.h	mm: remove unevictable_migrate_page function	2009-12-15 08:53:23 -08:00
Kconfig	ksm: remove unswappable max_kernel_pages	2009-12-15 08:53:20 -08:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c	ksm: remove unswappable max_kernel_pages	2009-12-15 08:53:20 -08:00
maccess.c
madvise.c
Makefile
memcontrol.c	ksm: mem cgroup charge swapin copy	2009-12-15 08:53:19 -08:00
memory_hotplug.c	mm: fix section mismatch in memory_hotplug.c	2009-12-15 08:53:20 -08:00
memory-failure.c	mm: CONFIG_MMU for PG_mlocked	2009-12-15 08:53:17 -08:00
memory.c	ksm: let shared pages be swappable	2009-12-15 08:53:19 -08:00
mempolicy.c	ksm: memory hotremove migration only	2009-12-15 08:53:20 -08:00
mempool.c
migrate.c	mm: remove unevictable_migrate_page function	2009-12-15 08:53:23 -08:00
mincore.c	mm: hugetlb: fix hugepage memory leak in mincore()	2009-12-15 08:53:24 -08:00
mlock.c	mlock: replace stale comments in munlock_vma_page()	2009-12-15 08:53:23 -08:00
mm_init.c
mmap.c	mm: uncached vma support with writenotify	2009-12-15 08:53:21 -08:00
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
msync.c
nommu.c	nommu: fix malloc performance by adding uninitialized flag	2009-12-15 08:53:24 -08:00
oom_kill.c
page_alloc.c	mm: CONFIG_MMU for PG_mlocked	2009-12-15 08:53:17 -08:00
page_cgroup.c
page_io.c	swap: rework map_swap_page() again	2009-12-15 08:53:16 -08:00
page_isolation.c
page-writeback.c
pagewalk.c	mm hugetlb: add hugepage support to pagemap	2009-12-15 08:53:24 -08:00
percpu.c
prio_tree.c
quicklist.c
readahead.c
rmap.c	mm: simplify try_to_unmap_one()	2009-12-15 08:53:20 -08:00
shmem_acl.c
shmem.c	swap_info: note SWAP_MAP_SHMEM	2009-12-15 08:53:16 -08:00
slab.c
slob.c
slub.c
sparse-vmemmap.c
sparse.c
swap_state.c
swap.c
swapfile.c	ksm: let shared pages be swappable	2009-12-15 08:53:19 -08:00
thrash.c
truncate.c
util.c
vmalloc.c	vmalloc(): adjust gfp mask passed on nested vmalloc() invocation	2009-12-15 08:53:13 -08:00
vmscan.c	vmscan: simplify code	2009-12-15 08:53:21 -08:00
vmstat.c	vmscan: stop kswapd waiting on congestion when the min watermark is not being met	2009-12-15 08:53:16 -08:00