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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>		15 years ago
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Kconfig	ksm: remove unswappable max_kernel_pages	15 years ago
Kconfig.debug	…
Makefile	…
backing-dev.c	…
bootmem.c	mm/bootmem.c: properly __init-annotate helper functions	15 years ago
bounce.c	…
debug-pagealloc.c	…
dmapool.c	…
fadvise.c	…
failslab.c	…
filemap.c	…
filemap_xip.c	…
fremap.c	…
highmem.c	…
hugetlb.c	hugetlb: abort a hugepage pool resize if a signal is pending	15 years ago
hwpoison-inject.c	…
init-mm.c	…
internal.h	mm: remove unevictable_migrate_page function	15 years ago
kmemcheck.c	…
kmemleak-test.c	…
kmemleak.c	…
ksm.c	ksm: remove unswappable max_kernel_pages	15 years ago
maccess.c	…
madvise.c	…
memcontrol.c	ksm: mem cgroup charge swapin copy	15 years ago
memory-failure.c	…
memory.c	ksm: let shared pages be swappable	15 years ago
memory_hotplug.c	mm: fix section mismatch in memory_hotplug.c	15 years ago
mempolicy.c	ksm: memory hotremove migration only	15 years ago
mempool.c	…
migrate.c	mm: remove unevictable_migrate_page function	15 years ago
mincore.c	mm: hugetlb: fix hugepage memory leak in mincore()	15 years ago
mlock.c	mlock: replace stale comments in munlock_vma_page()	15 years ago
mm_init.c	…
mmap.c	mm: uncached vma support with writenotify	15 years ago
mmu_context.c	…
mmu_notifier.c	…
mmzone.c	…
mprotect.c	…
mremap.c	…
msync.c	…
nommu.c	nommu: fix malloc performance by adding uninitialized flag	15 years ago
oom_kill.c	…
page-writeback.c	…
page_alloc.c	…
page_cgroup.c	…
page_io.c	…
page_isolation.c	…
pagewalk.c	mm hugetlb: add hugepage support to pagemap	15 years ago
percpu.c	…
prio_tree.c	…
quicklist.c	…
readahead.c	…
rmap.c	mm: simplify try_to_unmap_one()	15 years ago
shmem.c	…
shmem_acl.c	…
slab.c	…
slob.c	…
slub.c	…
sparse-vmemmap.c	…
sparse.c	…
swap.c	…
swap_state.c	…
swapfile.c	ksm: let shared pages be swappable	15 years ago
thrash.c	…
truncate.c	…
util.c	…
vmalloc.c	…
vmscan.c	vmscan: simplify code	15 years ago
vmstat.c	…