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linux-stable/arch/ia64/include/asm
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Mel Gorman 4f9b16a647 mm: disable zone_reclaim_mode by default 
When it was introduced, zone_reclaim_mode made sense as NUMA distances
punished and workloads were generally partitioned to fit into a NUMA
node.  NUMA machines are now common but few of the workloads are
NUMA-aware and it's routine to see major performance degradation due to
zone_reclaim_mode being enabled but relatively few can identify the
problem.

Those that require zone_reclaim_mode are likely to be able to detect
when it needs to be enabled and tune appropriately so lets have a
sensible default for the bulk of users.

This patch (of 2):

zone_reclaim_mode causes processes to prefer reclaiming memory from
local node instead of spilling over to other nodes.  This made sense
initially when NUMA machines were almost exclusively HPC and the
workload was partitioned into nodes.  The NUMA penalties were
sufficiently high to justify reclaiming the memory.  On current machines
and workloads it is often the case that zone_reclaim_mode destroys
performance but not all users know how to detect this.  Favour the
common case and disable it by default.  Users that are sophisticated
enough to know they need zone_reclaim_mode will detect it.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-04 16:53:59 -07:00
..
native
sn Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
uv Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
acenv.h ACPICA: Clean up redudant definitions already defined elsewhere 2014-05-27 18:13:08 +02:00
acpi-ext.h
acpi.h Merge branch 'acpica' 2014-06-03 23:12:27 +02:00
agp.h
asm-offsets.h
asmmacro.h
atomic.h arch,ia64: Convert smp_mb__*() 2014-04-18 14:20:35 +02:00
barrier.h arch,ia64: Convert smp_mb__*() 2014-04-18 14:20:35 +02:00
bitops.h arch,ia64: Convert smp_mb__*() 2014-04-18 14:20:35 +02:00
bug.h
bugs.h
cache.h
cacheflush.h
checksum.h
clocksource.h clocksource: Change __ARCH_HAS_CLOCKSOURCE_DATA to a CONFIG option 2011-07-21 13:34:05 -07:00
cpu.h
cputime.h cputime: Generic on-demand virtual cputime accounting 2013-01-27 19:23:27 +01:00
current.h
cyclone.h
delay.h
device.h driver core / ACPI: Move ACPI support to core device and driver types 2012-11-15 00:28:00 +01:00
div64.h
dma-mapping.h ia64: dma_debug: add debug_dma_mapping_error support 2012-11-28 15:28:58 +01:00
dma.h
dmi.h firmware/dmi_scan: generalize for use by other archs 2014-01-23 16:36:57 -08:00
elf.h default SET_PERSONALITY() in linux/elf.h 2013-02-26 02:46:08 -05:00
emergency-restart.h
esi.h
fb.h
fpswa.h
ftrace.h
futex.h Wrong asm register contraints in the futex implementation 2013-03-19 16:14:53 -07:00
gcc_intrin.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
gpio.h gpiolib/arches: Centralise bolierplate asm/gpio.h 2012-05-11 18:00:14 -06:00
hardirq.h [IA64] Move local_softirq_pending() definition 2010-10-19 13:31:11 +02:00
hpsim.h hpsim, initialize chip for assigned irqs 2012-03-08 12:26:30 -08:00
hugetlb.h mm/hugetlb: add more arch-defined huge_pte functions 2013-04-29 15:54:33 -07:00
hw_irq.h ia64: Remove redundant declaration of irq_desc[] 2011-03-29 14:48:05 +02:00
idle.h
intrinsics.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
io.h ia64: add early_memremap() alias for early_ioremap() 2013-09-05 13:29:28 +01:00
iommu.h iommu: Remove group_mf 2012-06-25 13:48:30 +02:00
iommu_table.h ia64, iommu: Add a dummy iommu_table.h file in IA64. 2010-10-08 13:11:11 -07:00
iosapic.h IA64: drivers: remove __dev* attributes. 2013-01-03 15:57:13 -08:00
irq.h
irq_regs.h
irq_remapping.h iommu: rename intr_remapping.[ch] to irq_remapping.[ch] 2012-05-07 14:35:00 +02:00
irqflags.h [IA64] Fix include dependency in asm/irqflags.h 2013-06-17 13:39:52 -07:00
Kbuild locking/mcs: Allow architecture specific asm files to be used for contended case 2014-02-09 21:18:52 +01:00
kdebug.h
kexec.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
kmap_types.h
kprobes.h
kregs.h
kvm_host.h kvm/x86: Convert iommu_flags to iommu_noncoherent 2013-10-30 19:02:13 +01:00
libata-portmap.h
linkage.h consolidate cond_syscall and SYSCALL_ALIAS declarations 2013-03-03 22:55:19 -05:00
local.h
local64.h
machvec.h ia64/xen: Remove Xen support for ia64 2013-12-10 16:11:07 -08:00
machvec_dig.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec_dig_vtd.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec_hpsim.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec_hpzx1.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec_hpzx1_swiotlb.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec_init.h
machvec_sn2.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec_uv.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
mc146818rtc.h
mca.h Fix initialization of CMCI/CMCP interrupts 2013-04-02 09:37:06 -07:00
mca_asm.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
meminit.h ia64/xen: Remove Xen support for ia64 2013-12-10 16:11:07 -08:00
mman.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
mmu.h
mmu_context.h
mmzone.h
module.h Make most arch asm/module.h files use asm-generic/module.h 2012-09-28 14:31:03 +09:30
msidef.h
mutex.h arch: Make __mutex_fastpath_lock_retval return whether fastpath succeeded or not 2013-06-26 12:10:55 +02:00
nodedata.h
numa.h Fix build error for numa_clear_node() under IA64 2013-04-02 09:39:48 -07:00
page.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
pal.h Fix common misspellings 2011-03-31 11:26:23 -03:00
param.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
paravirt.h ia64/xen: Remove Xen support for ia64 2013-12-10 16:11:07 -08:00
paravirt_patch.h
paravirt_privop.h
parport.h IA64: drivers: remove __dev* attributes. 2013-01-03 15:57:13 -08:00
patch.h
pci.h PCI: Turn pcibios_penalize_isa_irq() into a weak function 2014-05-27 16:23:58 -06:00
percpu.h
perfmon.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
pgalloc.h ia64: handle pgtable_page_ctor() fail 2013-11-15 09:32:17 +09:00
pgtable.h consolidate io_remap_pfn_range definitions 2013-06-29 12:46:35 +04:00
processor.h printk/cache: mark printk_once test variable __read_mostly 2014-01-23 16:36:56 -08:00
ptrace.h new helper: current_user_stack_pointer() 2012-12-19 18:07:39 -05:00
pvclock-abi.h ia64/xen: Remove Xen support for ia64 2013-12-10 16:11:07 -08:00
rwsem.h rwsem: Move duplicate function prototypes to linux/rwsem.h 2011-01-27 12:30:39 +01:00
sal.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
scatterlist.h
sections.h
segment.h
serial.h
shmparam.h
siginfo.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
signal.h consolidate kernel-side struct sigaction declarations 2013-02-03 15:09:22 -05:00
smp.h IA64: drivers: remove __dev* attributes. 2013-01-03 15:57:13 -08:00
sparsemem.h
spinlock.h lockref: Implement lockref for Itanium 2013-09-04 17:18:56 -07:00
spinlock_types.h
string.h
swiotlb.h
switch_to.h cputime: Consolidate vtime handling on context switch 2012-08-20 13:05:28 +02:00
syscall.h
termios.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
thread_info.h sched/idle, ia64: Switch from TS_POLLING to TIF_POLLING_NRFLAG 2014-05-08 09:16:55 +02:00
timex.h
tlb.h mm: split 'tlb_flush_mmu()' into tlb flushing and memory freeing parts 2014-04-25 16:05:40 -07:00
tlbflush.h
topology.h mm: disable zone_reclaim_mode by default 2014-06-04 16:53:59 -07:00
types.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
uaccess.h
unaligned.h
uncached.h
unistd.h ia64: add renameat2 syscall 2014-05-20 10:59:38 +02:00
unwind.h
user.h
ustack.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
vga.h
xor.h