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Paul Jackson 9bf2229f88 [PATCH] cpusets: formalize intermediate GFP_KERNEL containment 
This patch makes use of the previously underutilized cpuset flag
'mem_exclusive' to provide what amounts to another layer of memory placement
resolution.  With this patch, there are now the following four layers of
memory placement available:

 1) The whole system (interrupt and GFP_ATOMIC allocations can use this),
 2) The nearest enclosing mem_exclusive cpuset (GFP_KERNEL allocations can use),
 3) The current tasks cpuset (GFP_USER allocations constrained to here), and
 4) Specific node placement, using mbind and set_mempolicy.

These nest - each layer is a subset (same or within) of the previous.

Layer (2) above is new, with this patch.  The call used to check whether a
zone (its node, actually) is in a cpuset (in its mems_allowed, actually) is
extended to take a gfp_mask argument, and its logic is extended, in the case
that __GFP_HARDWALL is not set in the flag bits, to look up the cpuset
hierarchy for the nearest enclosing mem_exclusive cpuset, to determine if
placement is allowed.  The definition of GFP_USER, which used to be identical
to GFP_KERNEL, is changed to also set the __GFP_HARDWALL bit, in the previous
cpuset_gfp_hardwall_flag patch.

GFP_ATOMIC and GFP_KERNEL allocations will stay within the current tasks
cpuset, so long as any node therein is not too tight on memory, but will
escape to the larger layer, if need be.

The intended use is to allow something like a batch manager to handle several
jobs, each job in its own cpuset, but using common kernel memory for caches
and such.  Swapper and oom_kill activity is also constrained to Layer (2).  A
task in or below one mem_exclusive cpuset should not cause swapping on nodes
in another non-overlapping mem_exclusive cpuset, nor provoke oom_killing of a
task in another such cpuset.  Heavy use of kernel memory for i/o caching and
such by one job should not impact the memory available to jobs in other
non-overlapping mem_exclusive cpusets.

This patch enables providing hardwall, inescapable cpusets for memory
allocations of each job, while sharing kernel memory allocations between
several jobs, in an enclosing mem_exclusive cpuset.

Like Dinakar's patch earlier to enable administering sched domains using the
cpu_exclusive flag, this patch also provides a useful meaning to a cpuset flag
that had previously done nothing much useful other than restrict what cpuset
configurations were allowed.

Signed-off-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 		2005-09-07 16:57:40 -07:00
..
DocBook [PATCH] Minor libata documentation patch 2005-06-27 23:21:00 -04:00
RCU [PATCH] NMI: Update NMI users of RCU to use new API 2005-09-07 16:57:19 -07:00
aoe [PATCH] aoe: update the documentation to mention aoetools 2005-05-03 23:34:54 -07:00
arm [PATCH] ARM: 2847/1: S3C24XX - Documentation for USB OHCI host 2005-08-10 16:45:14 +01:00
block [PATCH] CFQ io scheduler, add ioprio documentation 2005-06-27 14:33:30 -07:00
cdrom [PATCH] remove verify_area(): remove or edit references to verify_area in Documentation/ 2005-09-07 16:57:35 -07:00
cpu-freq [PATCH] cpufreq: governors documentation fixes 2005-06-25 16:24:55 -07:00
cris Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
crypto [CRYPTO]: Fix XTEA implementation 2005-09-01 17:42:46 -07:00
device-mapper Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
driver-model [PATCH] Driver Core: driver model doc update 2005-06-20 15:15:29 -07:00
dvb [PATCH] fix for Documentation/dvb/bt8xx.txt?= 2005-07-07 18:24:03 -07:00
early-userspace Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fb [PATCH] vesafb: Document mtrr boot option usage 2005-07-30 10:14:47 -07:00
filesystems [PATCH] relayfs 2005-09-07 16:57:18 -07:00
firmware_class Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fujitsu/frv Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hwmon [PATCH] I2C: W83792D documentation 3/3 2005-09-05 09:14:14 -07:00
i2c [PATCH] I2C: Centralize 24RF08 corruption prevention 2005-09-05 09:14:25 -07:00
i2o Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
i386 [PATCH] Make the bzImage format self-terminating 2005-09-07 16:57:29 -07:00
ia64 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
infiniband [PATCH] IB: Add core locking documentation to Infiniband 2005-07-27 16:26:15 -07:00
input Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ioctl Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
isdn Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kbuild [PATCH] kbuild: describe Kbuild pitfall 2005-07-28 22:58:21 +02:00
kdump [PATCH] kdump documentation update to introduce use of irqpoll 2005-06-25 16:24:52 -07:00
m68k Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mips Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
networking /spare/repo/netdev-2.6 branch 'master' 2005-09-01 18:02:01 -04:00
parisc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pcmcia [PATCH] pcmcia: update documentation 2005-07-28 08:39:00 -07:00
power [PATCH] swsusp: update documentation 2005-09-07 16:57:16 -07:00
powerpc [PATCH] Driver Core: remove driver model detach_state 2005-05-17 14:54:55 -07:00
s390 [PATCH] s390: debug feature changes 2005-06-25 16:24:37 -07:00
scsi [SCSI] remove scsi_set_device 2005-06-26 08:31:47 -05:00
serial [SERIAL] Clean up and fix tty transmission start/stoping 2005-08-31 10:12:14 +01:00
sh Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sound [ALSA] ad1816a - Add clockfreq module option 2005-08-30 08:43:32 +02:00
sparc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sysctl [PATCH] setuid core dump 2005-06-23 09:45:26 -07:00
telephony Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
uml Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
usb [PATCH] USB: ub documentation update 2005-08-04 21:32:46 -07:00
video4linux [PATCH] v4l: oopsfix for BTTV on badly behaved PCI chipsets 2005-08-04 13:00:54 -07:00
vm [PATCH] swap: swap_lock replace list+device 2005-09-05 00:05:42 -07:00
w1 [PATCH] w1: Updates the w1 documentation (w1.generic) 2005-06-21 21:43:12 -07:00
watchdog [PATCH] ppc32: Added support for the Book-E style Watchdog Timer 2005-09-05 00:05:56 -07:00
x86_64 [PATCH] x86_64: ignore machine checks from boot time 2005-08-07 10:00:37 -07:00
00-INDEX [PATCH] kdump: Documentation for Kdump 2005-06-25 16:24:52 -07:00
BUG-HUNTING Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Changes [PATCH] Documentation/Changes: document the required udev version 2005-07-27 16:26:07 -07:00
CodingStyle Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
DMA-API.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
DMA-mapping.txt [PATCH] remove old scsi data direction macros 2005-04-18 13:49:58 -05:00
IO-mapping.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
IPMI.txt [PATCH] ipmi: add power cycle capability 2005-06-24 00:05:23 -07:00
IRQ-affinity.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
MSI-HOWTO.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ManagementStyle Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
PCIEBUS-HOWTO.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
README.DAC960 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
README.cycladesZ Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
SAK.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
SecurityBugs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
SubmittingDrivers [PATCH] Doc/Submitting: corrections, additions 2005-06-28 21:20:37 -07:00
SubmittingPatches [PATCH] plug MAN-PAGES maintainer in Documentation/SubmittingPatches 2005-08-01 19:14:00 -07:00
VGA-softcursor.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
acpi-hotkey.txt [ACPI] re-enable platform-specific hotkey drivers by default 2005-08-15 15:46:58 -04:00
atomic_ops.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
basic_profiling.txt [PATCH] oprofile: report anonymous region samples 2005-06-24 00:06:27 -07:00
binfmt_misc.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cachetlb.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cciss.txt [PATCH] cciss: pci id fix 2005-06-27 15:11:48 -07:00
cli-sti-removal.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
computone.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpqarray.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpusets.txt [PATCH] cpusets: formalize intermediate GFP_KERNEL containment 2005-09-07 16:57:40 -07:00
dcdbas.txt [PATCH] dcdbas: add Dell Systems Management Base Driver with sysfs support 2005-09-07 16:57:27 -07:00
debugging-modules.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dell_rbu.txt [PATCH] dell_rbu: new Dell BIOS update driver 2005-09-07 16:57:27 -07:00
devices.txt [PATCH] kdump: Accessing dump file in linear raw format (/dev/oldmem) 2005-06-25 16:24:54 -07:00
digiepca.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dnotify.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dontdiff [PATCH] ARM: 2840/1: Add mach-types to Documentation/dontdiff 2005-08-03 19:49:18 +01:00
eisa.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
exception.txt [PATCH] remove verify_area(): remove or edit references to verify_area in Documentation/ 2005-09-07 16:57:35 -07:00
feature-removal-schedule.txt [PATCH] remove verify_area(): remove or edit references to verify_area in Documentation/ 2005-09-07 16:57:35 -07:00
floppy.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ftape.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hayes-esp.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
highuid.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hpet.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hw_random.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ibm-acpi.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ide.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
initrd.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
io_ordering.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ioctl-number.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
iostats.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
isapnp.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
java.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kernel-doc-nano-HOWTO.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kernel-docs.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kernel-parameters.txt [PATCH] Add rdinit parameter to pick early userspace init 2005-09-07 16:57:28 -07:00
keys.txt [PATCH] Keys: Make request-key create an authorisation key 2005-06-24 00:05:19 -07:00
kobject.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kprobes.txt [PATCH] Add Documentation/kprobes.txt 2005-08-04 13:00:55 -07:00
kref.txt [PATCH] kref: add link to original documentation to the kref documentation. 2005-04-18 21:57:30 -07:00
laptop-mode.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ldm.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
locks.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
logo.gif Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
logo.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
magic-number.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mandatory.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mca.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
md.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
memory.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mono.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
moxa-smartio Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mtrr.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nbd.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nfsroot.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nmi_watchdog.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nommu-mmap.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
numastat.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
oops-tracing.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
paride.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
parport-lowlevel.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
parport.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci.txt [PATCH] PCI: update documentation 2005-08-16 21:06:25 -07:00
pm.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pnp.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
preempt-locking.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
prio_tree.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ramdisk.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
riscom8.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rocket.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rpc-cache.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rtc.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sched-coding.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sched-design.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sched-domains.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sched-stats.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
seclvl.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
serial-console.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sgi-ioc4.txt [PATCH] ioc4: Core driver rewrite 2005-06-21 18:46:32 -07:00
sgi-visws.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
smart-config.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
smp.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sonypi.txt [PATCH] sonypi SPIC initialisation fix 2005-09-07 16:57:24 -07:00
sparse.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
specialix.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
spinlocks.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
stable_api_nonsense.txt [PATCH] stable_api_nonsense.txt fixes 2005-07-29 13:12:49 -07:00
stable_kernel_rules.txt [PATCH] Add the rules about the -stable kernel releases to the Documentation directory 2005-07-29 13:12:49 -07:00
stallion.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
svga.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sx.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sysrq.txt [PATCH] kdump: sysrq trigger mechanism for kexec based crashdumps 2005-06-25 16:24:54 -07:00
time_interpolators.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tipar.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tty.txt [PATCH] Introduce tty_unregister_ldisc() 2005-06-23 09:45:35 -07:00
unicode.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
voyager.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xterm-linux.xpm Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
zorro.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00

README.cycladesZ 

The Cyclades-Z must have firmware loaded onto the card before it will
operate.  This operation should be performed during system startup,

The firmware, loader program and the latest device driver code are
available from Cyclades at
    ftp://ftp.cyclades.com/pub/cyclades/cyclades-z/linux/