Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Linus Torvalds e13053f506 Merge branch 'sched-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Pull voluntary preemption fixes from Ingo Molnar: "This tree contains a speedup which is achieved through better might_sleep()/might_fault() preemption point annotations for uaccess functions, by Michael S Tsirkin: 1. The only reason uaccess routines might sleep is if they fault. Make this explicit for all architectures. 2. A voluntary preemption point in uaccess functions means compiler can't inline them efficiently, this breaks assumptions that they are very fast and small that e.g. net code seems to make. Remove this preemption point so behaviour matches with what callers assume. 3. Accesses (e.g through socket ops) to kernel memory with KERNEL_DS like net/sunrpc does will never sleep. Remove an unconditinal might_sleep() in the might_fault() inline in kernel.h (used when PROVE_LOCKING is not set). 4. Accesses with pagefault_disable() return EFAULT but won't cause caller to sleep. Check for that and thus avoid might_sleep() when PROVE_LOCKING is set. These changes offer a nice speedup for CONFIG_PREEMPT_VOLUNTARY=y kernels, here's a network bandwidth measurement between a virtual machine and the host: before: incoming: 7122.77 Mb/s outgoing: 8480.37 Mb/s after: incoming: 8619.24 Mb/s [ +21.0% ] outgoing: 9455.42 Mb/s [ +11.5% ] I kept these changes in a separate tree, separate from scheduler changes, because it's a mixed MM and scheduler topic" * 'sched-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: mm, sched: Allow uaccess in atomic with pagefault_disable() mm, sched: Drop voluntary schedule from might_fault() x86: uaccess s/might_sleep/might_fault/ tile: uaccess s/might_sleep/might_fault/ powerpc: uaccess s/might_sleep/might_fault/ mn10300: uaccess s/might_sleep/might_fault/ microblaze: uaccess s/might_sleep/might_fault/ m32r: uaccess s/might_sleep/might_fault/ frv: uaccess s/might_sleep/might_fault/ arm64: uaccess s/might_sleep/might_fault/ asm-generic: uaccess s/might_sleep/might_fault/		2013-07-02 16:19:24 -07:00
..
bitops	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
4level-fixup.h
atomic-long.h
atomic.h	asm-generic: move cmpxchg*_local defs to cmpxchg.h	2013-03-13 06:11:05 +01:00
atomic64.h
audit_change_attr.h
audit_dir_write.h
audit_read.h
audit_signal.h
audit_write.h
barrier.h	Create asm-generic/barrier.h	2012-03-28 18:30:03 +01:00
bitops.h
bitsperlong.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
bug.h	bug.h: Fix up CONFIG_BUG=n implicit function declarations.	2012-06-25 10:32:49 -07:00
bugs.h
cache.h
cacheflush.h
checksum.h	asm-generic headers: Allow yet more arch overrides in checksum.h	2013-02-11 20:00:33 +05:30
clkdev.h	asm-generic: Add default clkdev.h	2012-10-03 21:33:53 +02:00
cmpxchg-local.h	generic: Use raw local irq variant for generic cmpxchg	2013-02-19 08:43:37 +01:00
cmpxchg.h	asm-generic: move cmpxchg*_local defs to cmpxchg.h	2013-03-13 06:11:05 +01:00
cputime.h	cputime: Generic on-demand virtual cputime accounting	2013-01-27 19:23:27 +01:00
cputime_jiffies.h	cputime: Move default nsecs_to_cputime() to jiffies based cputime file	2013-01-27 19:23:25 +01:00
cputime_nsecs.h	cputime_nsecs: use math64.h for nsec resolution conversion helpers	2013-04-26 18:58:12 +02:00
current.h
delay.h	asm-generic: delay.h fix udelay and ndelay for 8 bit args	2011-07-22 18:45:33 +02:00
device.h
div64.h
dma-coherent.h	common: dma-mapping: add support for generic dma_mmap_* calls	2012-07-30 12:25:46 +02:00
dma-contiguous.h	mm: cma: fix condition check when setting global cma area	2012-07-06 12:02:04 +02:00
dma-mapping-broken.h	asm-generic/dma-mapping-broken.h: Provide dma_alloc_attrs()/dma_free_attrs()	2012-12-25 20:14:54 +01:00
dma-mapping-common.h	common: dma-mapping: introduce dma_get_sgtable() function	2012-07-30 12:25:46 +02:00
dma.h
emergency-restart.h
exec.h	Split arch_align_stack() out from asm-generic/system.h	2012-03-28 18:30:03 +01:00
fb.h
ftrace.h
futex.h
getorder.h	bitops: Add missing parentheses to new get_order macro	2012-02-24 10:39:27 -08:00
gpio.h	gpiolib: let gpio_chip reference its descriptors	2013-02-11 22:21:28 +00:00
hardirq.h
hugetlb.h	mm/hugetlb: add more arch-defined huge_pte functions	2013-04-29 15:54:33 -07:00
hw_irq.h
ide_iops.h
int-l64.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
int-ll64.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
io-64-nonatomic-hi-lo.h	asm-generic: architecture independent readq/writeq for 32bit environment	2012-02-21 16:47:28 -08:00
io-64-nonatomic-lo-hi.h	asm-generic: architecture independent readq/writeq for 32bit environment	2012-02-21 16:47:28 -08:00
io.h	kernel: Fix s390 absolute memory access for /dev/mem	2013-05-22 09:45:57 +02:00
ioctl.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
iomap.h	[PARISC] fix compile break caused by iomap: make IOPORT/PCI mapping functions conditional	2012-02-27 09:43:30 -06:00
irq.h
irq_regs.h
irqflags.h
Kbuild.asm	UAPI: Set up uapi/asm/Kbuild.asm	2012-10-02 18:01:56 +01:00
kdebug.h
kmap_types.h	asm-generic: remove km_type definitions	2012-07-24 15:27:30 +08:00
kvm_para.h	KVM: add kvm_para_available to asm-generic/kvm_para.h	2013-06-05 13:21:29 +03:00
libata-portmap.h
linkage.h
local.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
local64.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
memory_model.h	mm: fix __page_to_pfn for a const struct page argument	2011-08-17 13:00:20 -07:00
mm_hooks.h
mmu.h	asm-generic/mmu.h: Add support for FDPIC	2012-12-09 23:14:14 +01:00
mmu_context.h
module.h	Make most arch asm/module.h files use asm-generic/module.h	2012-09-28 14:31:03 +09:30
mutex-dec.h	arch: Make __mutex_fastpath_lock_retval return whether fastpath succeeded or not	2013-06-26 12:10:55 +02:00
mutex-null.h	arch: Make __mutex_fastpath_lock_retval return whether fastpath succeeded or not	2013-06-26 12:10:55 +02:00
mutex-xchg.h	arch: Make __mutex_fastpath_lock_retval return whether fastpath succeeded or not	2013-06-26 12:10:55 +02:00
mutex.h
page.h	The following changes since commit 3ee72ca992	2012-01-10 17:39:40 -08:00
param.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
parport.h	include: remove __dev* attributes.	2013-01-03 15:57:16 -08:00
pci-bridge.h	PCI: work around Stratus ftServer broken PCIe hierarchy	2012-04-30 15:21:02 -06:00
pci-dma-compat.h
pci.h	PCI: collapse pcibios_resource_to_bus	2012-02-23 20:19:04 -07:00
pci_iomap.h	[PARISC] fix compile break caused by iomap: make IOPORT/PCI mapping functions conditional	2012-02-27 09:43:30 -06:00
percpu.h
pgalloc.h
pgtable-nopmd.h
pgtable-nopud.h
pgtable.h	consolidate io_remap_pfn_range definitions	2013-06-29 12:46:35 +04:00
ptrace.h	asm-generic/ptrace.h: start a common low level ptrace helper	2011-05-26 17:12:36 -07:00
resource.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
rtc.h
rwsem.h	Hexagon: Add locking types and functions	2011-11-01 07:34:20 -07:00
scatterlist.h
sections.h
segment.h
serial.h
siginfo.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
signal.h	unify default ptrace_signal_deliver	2012-11-29 00:01:23 -05:00
sizes.h	ARM: 7430/1: sizes.h: move from asm-generic to <linux/sizes.h>	2012-06-28 17:14:34 +01:00
spinlock.h
statfs.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
string.h
switch_to.h	Split the switch_to() wrapper out of asm-generic/system.h	2012-03-28 18:30:03 +01:00
syscall.h	asm/syscall.h: add syscall_get_arch	2012-04-14 11:13:19 +10:00
syscalls.h	burying unused conditionals	2013-02-14 09:21:15 -05:00
termios-base.h
termios.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
timex.h
tlb.h	arch, mm: Remove tlb_fast_mode()	2013-06-06 10:07:26 +09:00
tlbflush.h	BUG: headers with BUG/BUG_ON etc. need linux/bug.h	2012-03-04 17:54:34 -05:00
topology.h
trace_clock.h	tracing,x86: Add a TSC trace_clock	2012-11-13 15:48:27 -05:00
uaccess-unaligned.h
uaccess.h	asm-generic: uaccess s/might_sleep/might_fault/	2013-05-28 09:41:05 +02:00
unaligned.h
unistd.h	We get rid of the general module prefix confusion with a binary config option,	2013-05-05 10:58:06 -07:00
user.h
vga.h
vmlinux.lds.h	Finally eradicate CONFIG_HOTPLUG	2013-06-03 14:20:18 -07:00
word-at-a-time.h	word-at-a-time: make the interfaces truly generic	2012-05-26 11:33:40 -07:00
xor.h	asm-generic: xor: mark static functions as __maybe_unused	2012-10-03 21:21:06 +02:00