Konstantin Weitz
45961722f8
mm: add support for discard of unused ptes
...
In a virtualized environment and given an appropriate interface the guest
can mark pages as unused while they are free (for the s390 implementation
see git commit 45e576b1c3 "guest page hinting light"). For the host
the unused state is a property of the pte.
This patch adds the primitive 'pte_unused' and code to the host swap out
handler so that pages marked as unused by all mappers are not swapped out
but discarded instead, thus saving one IO for swap out and potentially
another one for swap in.
[ Martin Schwidefsky: patch reordering and simplification ]
Signed-off-by: Konstantin Weitz <konstantin.weitz@gmail.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2014-02-21 08:50:18 +01:00
..
bitops
bitops/find: clarify and extend documentation
2013-11-13 12:09:22 +09:00
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: Modify a set of system calls in audit class definitions
2014-01-17 17:01:46 -05:00
audit_dir_write.h
audit: support the "standard" <asm-generic/unistd.h>
2011-05-04 14:41:28 -04:00
audit_read.h
audit: support the "standard" <asm-generic/unistd.h>
2011-05-04 14:41:28 -04:00
audit_signal.h
audit_write.h
audit: Modify a set of system calls in audit class definitions
2014-01-17 17:01:46 -05:00
barrier.h
arch: Introduce smp_load_acquire(), smp_store_release()
2014-01-12 10:37:17 +01:00
bitops.h
bitops: remove minix bitops from asm/bitops.h
2011-03-23 19:46:22 -07:00
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
asm-generic/cacheflush.h: flush icache when copying to user pages
2011-05-25 08:39:37 -07:00
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-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
fixmap.h
add generic fixmap.h
2014-01-23 16:36:54 -08:00
ftrace.h
asm-generic headers: add ftrace.h
2011-03-17 09:19:04 +08:00
futex.h
futex: Sanitize futex ops argument types
2011-03-11 12:23:31 +01:00
getorder.h
bitops: Add missing parentheses to new get_order macro
2012-02-24 10:39:27 -08:00
gpio.h
GPIO bulk changes for the v3.13 development cycle
2013-11-12 15:50:46 +09:00
hardirq.h
Fix IRQ flag handling naming
2010-10-07 14:08:55 +01:00
hash.h
lib: hash: follow-up fixups for arch hash
2013-12-19 00:14:53 -05:00
hugetlb.h
mm: Fix generic hugetlb pte check return type.
2013-10-02 20:02:35 -04:00
hw_irq.h
ide_iops.h
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
core: Replace __get_cpu_var with __this_cpu_read if not used for an address.
2010-12-17 15:07:19 +01:00
irqflags.h
Fix IRQ flag handling naming
2010-10-07 14:08:55 +01:00
Kbuild.asm
UAPI: Set up uapi/asm/Kbuild.asm
2012-10-02 18:01:56 +01:00
kdebug.h
asm-generic: kdebug.h: Checkpatch cleanup
2010-10-09 21:51:44 +02:00
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
__page_to_pfn: Fix typo in comment
2013-10-14 15:28:29 +02:00
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
percpu: Optimize __get_cpu_var()
2010-09-10 10:56:51 +02:00
pgalloc.h
pgtable-nopmd.h
pgtable-nopud.h
pgtable.h
mm: add support for discard of unused ptes
2014-02-21 08:50:18 +01:00
preempt.h
sched: Remove PREEMPT_NEED_RESCHED from generic code
2013-12-11 15:52:32 +01:00
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
vmlinux.lds: add comments for global variables and clean up useless declarations
2013-07-03 16:07:34 -07:00
segment.h
serial.h
siginfo.h
constify copy_siginfo_to_user{,32}()
2013-11-09 00:16:29 -05:00
signal.h
unify default ptrace_signal_deliver
2012-11-29 00:01:23 -05:00
simd.h
crypto: create generic version of ablk_helper
2013-09-24 06:02:24 +10:00
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
Fix TLB gather virtual address range invalidation corner cases
2013-08-16 08:52:46 -07:00
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: Spelling s/a ny/any/
2014-01-02 10:45:23 +01:00
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
asm-generic/user.h: Fix spelling in comment
2011-03-01 15:49:39 +01:00
vga.h
vmlinux.lds.h
kernel: add support for init_array constructors
2013-10-17 15:05:17 +10:30
vtime.h
include/asm-generic/vtime.h: avoid zero-length file
2013-09-30 14:31:02 -07:00
word-at-a-time.h
word-at-a-time: provide generic big-endian zero_bytemask implementation
2013-12-12 10:39:01 -08:00
xor.h
asm-generic: xor: mark static functions as __maybe_unused
2012-10-03 21:21:06 +02:00