Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
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
..
bitops	asm-generic: rename atomic.h to atomic-long.h	2009-06-11 21:02:17 +02:00
4level-fixup.h	mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()	2009-07-27 12:10:38 -07:00
atomic-long.h	asm-generic: merge branch 'master' of torvalds/linux-2.6	2009-06-12 11:32:58 +02:00
atomic.h	asm-generic: add generic atomic.h and io.h	2009-06-11 21:02:49 +02:00
atomic64.h	lib: Provide generic atomic64_t implementation	2009-06-15 13:27:38 +10:00
audit_change_attr.h
audit_dir_write.h
audit_read.h
audit_signal.h
audit_write.h	[PATCH] asm/generic: fix bug - kernel fails to build when enable some common audit code on Blackfin	2008-12-09 02:27:39 -05:00
auxvec.h	asm-generic: add generic ABI headers	2009-06-11 21:02:15 +02:00
bitops.h	asm-generic: make bitops.h usable	2009-06-11 21:02:31 +02:00
bitsperlong.h	asm-generic: introduce asm/bitsperlong.h	2009-06-11 21:02:14 +02:00
bug.h	Eliminate thousands of warnings with gcc 3.2 build	2009-05-06 16:36:09 -07:00
bugs.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
cache.h	asm-generic: add generic NOMMU versions of some headers	2009-06-11 21:02:50 +02:00
cacheflush.h	block: add helpers to run flush_dcache_page() against a bio and a request's pages	2009-11-26 09:16:19 +01:00
checksum.h	add generic lib/checksum.c	2009-06-11 21:02:51 +02:00
cmpxchg-local.h
cmpxchg.h
cputime.h	cputime: Optimize jiffies_to_cputime(1)	2009-08-03 14:48:36 +02:00
current.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
delay.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
device.h	Driver Core: Add platform device arch data V3	2009-07-22 00:28:38 +02:00
div64.h
dma-coherent.h
dma-mapping-broken.h
dma-mapping-common.h	dma-ops: Remove flush_write_buffers() in dma-mapping-common.h	2009-08-10 09:34:57 +02:00
dma.h	asm-generic: add legacy I/O header files	2009-06-11 21:02:42 +02:00
emergency-restart.h
errno-base.h
errno.h	cfg80211: add rfkill support	2009-06-03 14:06:14 -04:00
fb.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
fcntl.h	vfs: Implement proper O_SYNC semantics	2009-12-10 15:02:50 +01:00
futex.h
getorder.h	asm-generic: rename page.h and uaccess.h	2009-06-11 21:02:17 +02:00
gpio.h	asm-generic/gpio.h: add some forward decls of the device struct	2009-12-10 22:18:33 +01:00
hardirq.h	IRQ: Change __softirq_pending to unsigned int in asm-generic/hardirq.h.	2009-10-09 13:38:21 -07:00
hw_irq.h	asm-generic: add legacy I/O header files	2009-06-11 21:02:42 +02:00
ide_iops.h
int-l64.h	asm-generic: introduce asm/bitsperlong.h	2009-06-11 21:02:14 +02:00
int-ll64.h	asm-generic: introduce asm/bitsperlong.h	2009-06-11 21:02:14 +02:00
io.h	asm-generic: add generic atomic.h and io.h	2009-06-11 21:02:49 +02:00
ioctl.h
ioctls.h	asm-generic: add generic ABI headers	2009-06-11 21:02:15 +02:00
iomap.h
ipcbuf.h	asm-generic: add generic sysv ipc headers	2009-06-11 21:02:15 +02:00
irq.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
irq_regs.h
irqflags.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
Kbuild	asm-generic: add a generic unistd.h	2009-06-11 21:02:16 +02:00
Kbuild.asm	KVM: export kvm_para.h	2009-09-10 10:46:47 +03:00
kdebug.h	asm-generic: define DIE_OOPS in asm-generic	2008-10-27 11:39:03 +01:00
kmap_types.h	kmap_types.h: rename D macro	2009-09-23 07:39:30 -07:00
libata-portmap.h
linkage.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
local.h	asm-generic: fix local_add_unless macro	2009-05-18 08:34:08 -07:00
memory_model.h	tree-wide: fix assorted typos all over the place	2009-12-04 15:39:55 +01:00
mm_hooks.h
mman-common.h	nommu: fix malloc performance by adding uninitialized flag	2009-12-15 08:53:24 -08:00
mman.h	mm: add MAP_HUGETLB for mmaping pseudo-anonymous huge page regions	2009-09-22 07:17:41 -07:00
mmu.h	asm-generic: add generic NOMMU versions of some headers	2009-06-11 21:02:50 +02:00
mmu_context.h	asm-generic: add generic NOMMU versions of some headers	2009-06-11 21:02:50 +02:00
module.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
msgbuf.h	asm-generic: add generic sysv ipc headers	2009-06-11 21:02:15 +02:00
mutex-dec.h	mutex: speed up generic mutex implementations	2008-10-23 09:18:20 -07:00
mutex-null.h
mutex-xchg.h	mutex: speed up generic mutex implementations	2008-10-23 09:18:20 -07:00
mutex.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
page.h	asm-generic: add generic NOMMU versions of some headers	2009-06-11 21:02:50 +02:00
param.h	asm-generic: add generic ABI headers	2009-06-11 21:02:15 +02:00
parport.h	asm-generic: add legacy I/O header files	2009-06-11 21:02:42 +02:00
pci-dma-compat.h
pci.h	PCI: remove pcibios_scan_all_fns()	2009-09-09 13:29:18 -07:00
percpu.h	this_cpu: Introduce this_cpu_ptr() and generic this_cpu_* operations	2009-10-03 19:48:22 +09:00
pgalloc.h	asm-generic: add generic NOMMU versions of some headers	2009-06-11 21:02:50 +02:00
pgtable-nopmd.h	mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()	2009-07-27 12:10:38 -07:00
pgtable-nopud.h	mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()	2009-07-27 12:10:38 -07:00
pgtable.h	asm-generic: add dummy pgprot_noncached()	2009-06-23 14:34:30 +02:00
poll.h
posix_types.h	asm-generic: add generic ABI headers	2009-06-11 21:02:15 +02:00
resource.h
rtc.h	asm-generic: make get_rtc_time overridable	2009-06-11 21:02:18 +02:00
scatterlist.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
sections.h	asm/sections: add text/data checking functions for arches to override	2009-09-23 07:39:30 -07:00
segment.h	asm-generic: add generic NOMMU versions of some headers	2009-06-11 21:02:50 +02:00
sembuf.h	asm-generic: add generic sysv ipc headers	2009-06-11 21:02:15 +02:00
serial.h	asm-generic: add legacy I/O header files	2009-06-11 21:02:42 +02:00
setup.h	asm-generic: add generic ABI headers	2009-06-11 21:02:15 +02:00
shmbuf.h	asm-generic: add generic sysv ipc headers	2009-06-11 21:02:15 +02:00
shmparam.h	asm-generic: add generic sysv ipc headers	2009-06-11 21:02:15 +02:00
siginfo.h	HWPOISON: Add new SIGBUS error codes for hardware poison signals	2009-09-16 11:50:06 +02:00
signal-defs.h	asm-generic: rename termios.h, signal.h and mman.h	2009-06-11 21:01:52 +02:00
signal.h	asm-generic: add generic ABI headers	2009-06-11 21:02:15 +02:00
socket.h	net: Generalize socket rx gap / receive queue overflow cmsg	2009-10-12 13:26:31 -07:00
sockios.h	asm-generic: add generic ABI headers	2009-06-11 21:02:15 +02:00
spinlock.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
stat.h	asm-generic: add generic ABI headers	2009-06-11 21:02:15 +02:00
statfs.h	remove __KERNEL_STRICT_NAMES	2009-03-26 18:14:21 +01:00
string.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
swab.h	asm-generic: add generic ABI headers	2009-06-11 21:02:15 +02:00
syscall.h	asm-generic: syscall_get_nr returns int	2009-09-22 19:56:50 -07:00
syscalls.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
system.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
termbits.h	asm-generic: add generic ABI headers	2009-06-11 21:02:15 +02:00
termios-base.h	asm-generic: rename termios.h, signal.h and mman.h	2009-06-11 21:01:52 +02:00
termios.h	asm-generic: add generic ABI headers	2009-06-11 21:02:15 +02:00
timex.h	asm-generic: add legacy I/O header files	2009-06-11 21:02:42 +02:00
tlb.h	mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()	2009-07-27 12:10:38 -07:00
tlbflush.h	asm-generic: add generic NOMMU versions of some headers	2009-06-11 21:02:50 +02:00
topology.h	cpumask: remove obsolete node_to_cpumask now everyone uses cpumask_of_node	2009-09-24 09:34:34 +09:30
types.h	asm-generic: add generic ABI headers	2009-06-11 21:02:15 +02:00
uaccess-unaligned.h	asm-generic: rename page.h and uaccess.h	2009-06-11 21:02:17 +02:00
uaccess.h	asm-generic: uaccess: fix up local access_ok() usage	2009-06-19 14:58:08 +02:00
ucontext.h	asm-generic: add generic ABI headers	2009-06-11 21:02:15 +02:00
unaligned.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
unistd.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic	2009-12-11 20:57:31 -08:00
user.h	asm-generic: add generic versions of common headers	2009-06-11 21:02:37 +02:00
vga.h	asm-generic: add legacy I/O header files	2009-06-11 21:02:42 +02:00
vmlinux.lds.h	Optimize the ordering of sections in RW_DATA_SECTION.	2009-09-24 17:16:21 -07:00
xor.h