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David Howells 670bd95e04 [PATCH] Further alterations for memory barrier document 
From: David Howells <dhowells@redhat.com>

Apply some alterations to the memory barrier document that I worked out
with Paul McKenney of IBM, plus some of the alterations suggested by Alan
Stern.

The following changes were made:

 (*) One of the examples given for what can happen with overlapping memory
     barriers was wrong.

 (*) The description of general memory barriers said that a general barrier is
     a combination of a read barrier and a write barrier.  This isn't entirely
     true: it implies both, but is more than a combination of both.

 (*) The first example in the "SMP Barrier Pairing" section was wrong: the
     loads around the read barrier need to touch the memory locations in the
     opposite order to the stores around the write barrier.

 (*) Added a note to make explicit that the loads should be in reverse order to
     the stores.

 (*) Adjusted the diagrams in the "Examples Of Memory Barrier Sequences"
     section to make them clearer.  Added a couple of diagrams to make it more
     clear as to how it could go wrong without the barrier.

 (*) Added a section on memory speculation.

 (*) Dropped any references to memory allocation routines doing memory
     barriers.  They may do sometimes, but it can't be relied on.  This may be
     worthy of further documentation later.

 (*) Made the fact that a LOCK followed by an UNLOCK should not be considered a
     full memory barrier more explicit and gave an example.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 		2006-06-10 11:02:05 -07:00
..
DocBook [PATCH] move ->eh_strategy_handler to the transport class 2006-04-10 14:15:47 -04:00
RCU [PATCH] for_each_possible_cpu: documentaion 2006-03-28 09:16:05 -08:00
aoe [PATCH] aoe [2/8]: support dynamic resizing of AoE devices 2006-03-23 22:01:55 -08:00
arm [ARM] 3416/1: Update LART site URL 2006-03-27 15:32:30 +01:00
block [PATCH] Document online io scheduler switching 2006-04-20 13:04:36 +02:00
cdrom [PATCH] remove verify_area(): remove or edit references to verify_area in Documentation/ 2005-09-07 16:57:35 -07:00
connector [CONNECTOR]: Use netlink_has_listeners() to avoind unnecessary allocations. 2006-03-20 22:21:40 -08:00
cpu-freq [CPUFREQ] Update LART site URL 2006-04-03 07:25:54 -05:00
cris Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
crypto [PATCH] Spelling fixes for Documentation/ 2005-09-10 10:06:28 -07:00
device-mapper [PATCH] Fix dm-snapshot tutorial in Documentation 2005-11-07 07:53:54 -08:00
driver-model [PATCH] Clean up Documentation/driver-model/overview.txt 2006-02-03 08:31:59 -08:00
drivers/edac [PATCH] EDAC: documentation spelling fixes 2006-03-26 08:57:08 -08:00
dvb V4L/DVB (3832): Get_dvb_firmware: download nxt2002 firmware from new driver location 2006-05-12 19:55:17 -03:00
early-userspace earlyuserspace/README: fix homonym err 2005-11-08 17:16:50 +01:00
fb [PATCH] Update cyblafb driver 2006-01-09 10:00:36 -08:00
filesystems [doc] add paragraph about 'fs' subsystem to sysfs.txt 2006-04-26 10:49:26 +02:00
firmware_class [PATCH] drivers/base/firmware_class.c: cleanups 2006-05-21 12:59:19 -07:00
fujitsu/frv Documentation: Make fujitsu/frv/kernel-ABI.txt 80 columns wide 2006-04-01 01:38:15 +02:00
hwmon [PATCH] w83781d: Don't reset the chip by default 2006-03-23 14:21:53 -08:00
i2c [PATCH] i2c-parport: Make type parameter mandatory 2006-04-14 11:18:34 -07:00
i2o spelling: s/retreive/retrieve/ 2006-01-10 00:10:13 +01:00
i386 [PATCH] Make the bzImage format self-terminating 2005-09-07 16:57:29 -07:00
ia64 [IA64] Add Documentation/ia64/mca.txt 2005-09-16 10:34:16 -07:00
infiniband [PATCH] IB: Add core locking documentation to Infiniband 2005-07-27 16:26:15 -07:00
input Input: gamecon - add SNES mouse support 2006-04-02 00:10:05 -05:00
ioctl spelling: s/appropiate/appropriate/ 2006-01-15 02:00:17 +01:00
isdn [PATCH] isdn4linux: Siemens Gigaset drivers: add README 2006-04-11 06:18:50 -07:00
kbuild kbuild: fix garbled text in modules.txt 2006-04-04 15:28:21 +02:00
kdump [PATCH] kdump: add dmesg gdbmacro into document 2006-01-11 18:42:10 -08:00
m68k [PATCH] Typo fixes 2006-03-28 09:16:08 -08:00
mips [MIPS] Update docs to reflect the latest status of the Alchemy IDE driver. 2006-02-14 19:13:23 +00:00
networking [NET]: Add missing operstates documentation. 2006-05-09 15:15:35 -07:00
parisc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pcmcia [PATCH] pcmcia: convert remaining users of pcmcia_release_io and _irq 2006-03-31 17:15:51 +02:00
power [PATCH] suspend: Documentation update for IBM Thinkpad X30 2006-04-28 08:33:49 -07:00
powerpc [PATCH] powerpc: Kill _machine and hard-coded platform numbers 2006-03-28 23:15:54 +11:00
s390 [PATCH] s390: cio documentation update 2006-03-24 07:33:15 -08:00
scsi [SCSI] megaraid_{mm,mbox}: fix a bug in reset handler 2006-04-27 14:08:53 -05:00
serial [SERIAL] Update parity handling documentation 2006-06-02 17:47:26 +01:00
sh Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sound [ALSA] adding __devinitdata to pci_device_id 2006-04-27 21:10:38 +02:00
sparc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
spi [PATCH] SPI: busnum == 0 needs to work 2006-05-16 14:33:57 -07:00
sysctl [PATCH] suspend-to-ram: allow video options to be set at runtime 2006-02-20 20:00:10 -08:00
telephony Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
uml [PATCH] Spelling fixes for Documentation/ 2005-09-10 10:06:28 -07:00
usb V4L/DVB (3653h): Move usb v4l docs into Documentation/video4linux 2006-04-02 04:55:56 -03:00
video4linux V4L/DVB (3653h): Move usb v4l docs into Documentation/video4linux 2006-04-02 04:55:56 -03:00
vm [PATCH] Doc: vm/hugetlbpage update-2 2006-04-19 09:13:52 -07:00
w1 [PATCH] W1: Add the DS2482 I2C-to-w1 bridge driver. 2006-03-23 17:28:12 -08:00
watchdog [WATCHDOG] Documentation/watchdog/watchdog-api.txt - fix watchdog daemon 2006-05-15 21:37:46 +02:00
x86_64 [PATCH] x86_64: Reserve SRAT hotadd memory on x86-64 2006-04-09 11:53:16 -07:00
00-INDEX [PATCH] update Documentation/00-INDEX 2005-11-18 10:51:22 -08:00
BUG-HUNTING Documentation: Update to BUG-HUNTING 2006-03-22 00:37:42 +01:00
Changes Documentation/Changes: remove outdated translation references 2006-03-20 20:28:13 +01:00
CodingStyle [PATCH] CodingStyle correction 2006-01-10 08:01:52 -08:00
DMA-API.txt [PATCH] dma doc updates 2006-04-14 12:25:26 -07:00
DMA-ISA-LPC.txt [PATCH] ISA DMA API documentation 2005-09-09 14:03:42 -07:00
DMA-mapping.txt [PATCH] dma doc updates 2006-04-14 12:25:26 -07:00
HOWTO [PATCH] Added URI of "linux kernel development process" 2006-04-27 13:08:57 -07:00
IO-mapping.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
IPMI.txt [PATCH] ipmi poweroff: fix chassis control 2005-09-07 16:57:49 -07:00
IRQ-affinity.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
MSI-HOWTO.txt [PATCH] Doc/MSI-HOWTO: cleanups 2005-11-07 07:53:55 -08:00
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] docs: update some updated code docs 2006-01-14 10:39:53 -08:00
SubmittingPatches [PATCH] docs: update some updated code docs 2006-01-14 10:39:53 -08:00
VGA-softcursor.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
acpi-hotkey.txt Fix minor documentation typo 2006-04-01 01:49:22 +02:00
applying-patches.txt [PATCH] Docs update: typos, corrections and additions to applying-patches.txt 2006-01-10 08:01:54 -08:00
atomic_ops.txt [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
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 [PATCH] Add flush_kernel_dcache_page() API 2006-03-26 08:56:53 -08:00
cciss.txt [SCSI] cciss: scsi error handling 2005-11-06 14:12:49 -06:00
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
cpu-hotplug.txt [PATCH] for_each_possible_cpu: documentaion 2006-03-28 09:16:05 -08:00
cpusets.txt [PATCH] cpuset memory spread basic implementation 2006-03-24 07:33:22 -08:00
cputopology.txt [PATCH] trivial typos in Documentation/cputopology.txt 2006-03-28 09:16:08 -08:00
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: changes in packet update mechanism 2005-10-11 09:46:53 -07:00
devices.txt [PATCH] devices.txt: remove pktcdvd entry 2006-05-15 11:20:58 -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] dontdiff: add asm_offsets 2005-09-13 08:22:29 -07:00
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] sbp2: consolidate workarounds 2006-05-17 21:32:21 -07:00
floppy.txt [PATCH] kernel Doc/ URL corrections 2005-11-22 09:14:30 -08:00
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 Documentation/hpet.txt typo 2006-01-15 02:09:54 +01:00
hrtimers.txt [PATCH] hrtimer: hrtimer documentation 2006-01-10 08:01:37 -08:00
hw_random.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ibm-acpi.txt [ACPI] IBM ThinkPad ACPI Extras Driver v0.12 2005-08-25 17:37:51 -04:00
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 [PATCH] arch/i386/kernel/microcode.c: remove the obsolete microcode_ioctl 2006-03-28 09:16:06 -08:00
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 [PATCH] Doc/kernel-doc: add more usage info 2006-02-01 08:53:27 -08:00
kernel-docs.txt [PATCH] kernel Doc/ URL corrections 2005-11-22 09:14:30 -08:00
kernel-parameters.txt Doc/kernel-parameters.txt: slightly reword sentence about restrictions 2006-04-01 01:44:30 +02:00
keys-request-key.txt [PATCH] keys: Permit running process to instantiate keys 2006-01-08 20:13:53 -08:00
keys.txt [PATCH] keys: Permit running process to instantiate keys 2006-01-08 20:13:53 -08:00
kobject.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kprobes.txt [PATCH] kprobes: Update Documentation/kprobes.txt 2006-02-14 16:09:34 -08:00
kref.txt [PATCH] kref: add link to original documentation to the kref documentation. 2005-04-18 21:57:30 -07:00
laptop-mode.txt [PATCH] docs: laptop-mode.txt source file build 2006-04-11 06:18:44 -07:00
ldm.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
leds-class.txt [PATCH] LED: class documentation 2006-03-31 12:18:56 -08:00
locks.txt [PATCH] Docs update: remove obsolete patch from locks.txt 2006-01-10 08:01:54 -08:00
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 [PATCH] mm: rename kmem_cache_s to kmem_cache 2005-11-07 07:53:24 -08:00
mandatory.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mca.txt [PATCH] kernel Doc/ URL corrections 2005-11-22 09:14:30 -08:00
md.txt [PATCH] md: allow sync-speed to be controlled per-device 2006-01-06 08:34:10 -08:00
memory-barriers.txt [PATCH] Further alterations for memory barrier document 2006-06-10 11:02:05 -07:00
memory.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mono.txt [PATCH] merge some from Rusty's trivial patches 2005-09-10 10:06:30 -07:00
moxa-smartio Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mtrr.txt [PATCH] Doc: fix mtrr userspace programs to build cleanly 2006-04-11 06:18:44 -07:00
mutex-design.txt [PATCH] mutex subsystem, documentation 2006-01-09 15:59:20 -08:00
nbd.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nfsroot.txt [PATCH] Updated Documentation/nfsroot.txt 2006-03-24 07:33:27 -08:00
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 [PATCH] doc: refer to kdump in oops-tracing.txt 2006-01-11 18:42:10 -08:00
paride.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
parport-lowlevel.txt [PATCH] parport: fix documentation 2006-02-03 08:32:06 -08:00
parport.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci-error-recovery.txt [PATCH] Documentation: Updated PCI Error Recovery 2006-02-03 08:32:00 -08:00
pci.txt [PATCH] PCI: Documentation: no more device ids 2006-04-27 13:00:51 -07:00
pm.txt [ACPI] linux-acpi@vger.kernel.org replaces acpi-devel@lists.sourceforge.net 2006-01-06 16:19:26 -05:00
pnp.txt [PATCH] pnp: PNP: adjust pnp_register_driver signature 2006-03-27 08:44:53 -08:00
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
robust-futex-ABI.txt [PATCH] lightweight robust futexes updates 2006-03-27 08:44:49 -08:00
robust-futexes.txt [PATCH] lightweight robust futexes updates 2006-03-27 08:44:49 -08:00
rocket.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rpc-cache.txt [PATCH] knfsd: Update rpc-cache.txt to match recent changes 2006-03-27 08:44:43 -08:00
rtc.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sched-arch.txt [PATCH] sched: resched and cpu_idle rework 2005-11-09 07:56:33 -08:00
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 [PATCH] doc: more serial-console info 2006-03-25 08:23:00 -08:00
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
sharedsubtree.txt [PATCH] Complete description of shared subtrees. 2005-11-07 18:18:11 -08:00
smart-config.txt kbuild: remove checkconfig.pl 2006-02-19 09:51:22 +01:00
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 [PATCH] Documentation/sparse.txt: mention CF=-Wbitwise 2005-11-07 07:53:54 -08:00
specialix.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
spinlocks.txt fix rwlock usage example 2006-03-22 00:19:39 +01:00
stable_api_nonsense.txt [PATCH] stable_api_nonsense.txt fixes 2005-07-29 13:12:49 -07:00
stable_kernel_rules.txt [PATCH] Docs update: small fixes to stable_kernel_rules.txt 2006-01-10 08:01:55 -08:00
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 update for Documentation/sysrq.txt 2006-01-03 13:31:01 +01:00
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
unshare.txt [PATCH] unshare system call -v5: Documentation file 2006-02-07 16:12:34 -08:00
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/