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Manfred Spraul 39323c64b8 smp_mb__{before,after}_atomic(): update Documentation 
When adding the _{acquire|release|relaxed}() variants of some atomic
operations, it was forgotten to update Documentation/memory_barrier.txt:

smp_mb__{before,after}_atomic() is now intended for all RMW operations
that do not imply a memory barrier.

1)
	smp_mb__before_atomic();
	atomic_add();

2)
	smp_mb__before_atomic();
	atomic_xchg_relaxed();

3)
	smp_mb__before_atomic();
	atomic_fetch_add_relaxed();

Invalid would be:
	smp_mb__before_atomic();
	atomic_set();

In addition, the patch splits the long sentence into multiple shorter
sentences.

Link: http://lkml.kernel.org/r/20191020123305.14715-2-manfred@colorfullife.com
Fixes: 654672d4ba ("locking/atomics: Add _{acquire|release|relaxed}() variants of some atomic operations")
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Acked-by: Waiman Long <longman@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: <1vier1@web.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-02-04 03:05:23 +00:00
..
ABI f2fs-for-5.6 2020-01-30 15:39:24 -08:00
accounting
admin-guide Merge branch 'akpm' (patches from Andrew) 2020-01-31 12:16:36 -08:00
arm
arm64 Merge branch 'for-next/rng' into for-next/core 2020-01-22 11:38:53 +00:00
block docs: block/biovecs: update the location of bio.c 2020-01-10 10:23:15 -07:00
bpf bpf: Add s390 testing documentation 2019-10-30 16:25:31 +01:00
cdrom
core-api mm, tree-wide: rename put_user_page*() to unpin_user_page*() 2020-01-31 10:30:38 -08:00
cpu-freq
crypto crypto: algapi - make unregistration functions return void 2019-12-20 14:58:35 +08:00
dev-tools RISC-V Patches for the 5.6 Merge Window, Part 1 2020-01-31 11:23:29 -08:00
devicetree - New Drivers 2020-02-03 14:51:57 +00:00
doc-guide Add a maintainer entry profile for documentation 2020-01-24 09:48:39 -07:00
driver-api - Fix a SEVERE docs build failure for cpu idle cooling device (Randy Dunlap) 2020-01-31 14:39:21 -08:00
EDID
fault-injection
fb fbdev: fbmem: allow overriding the number of bootup logos 2020-01-03 14:27:40 +01:00
features ARC: update feature support for jump-labels 2020-01-13 08:47:57 -08:00
filesystems f2fs-for-5.6 2020-01-30 15:39:24 -08:00
firmware_class
firmware-guide docs: firmware-guide: ACPI: Replace dma_request_slave_channel() with dma_request_chan() 2019-12-19 22:58:12 +01:00
fpga Documentation: fpga: dfl: add descriptions for thermal/power management interfaces 2019-10-16 19:18:26 -07:00
gpu drm-misc-next for v5.6: 2020-01-03 11:43:44 +10:00
hid
hwmon hwmon: (adm1177) Add ADM1177 Hot Swap Controller and Digital Power Monitor driver 2020-01-23 13:15:11 -08:00
i2c Here's the main documentation changes for 5.5: 2019-12-02 11:51:02 -08:00
ia64
ide
iio
infiniband
input
isdn isdn: capi: dead code removal 2019-12-11 09:12:38 +01:00
kbuild Kconfig updates for v5.6 2020-02-01 10:25:55 -08:00
kernel-hacking Documentation: kernel-hacking: hacking.rst: Change reference to document namespaces.rst to symbol-namespaces.rst 2019-12-19 09:36:23 -07:00
leds
livepatch livepatch: Documentation of the new API for tracking system state changes 2019-11-01 13:08:24 +01:00
locking doc:locking: fix locktorture parameter description 2019-12-19 11:04:29 -07:00
m68k
maintainer Add a maintainer entry profile for documentation 2020-01-24 09:48:39 -07:00
media media updates for v5.6-rc1 2020-01-31 14:43:23 -08:00
mic
mips
misc-devices Documentation: fix Sphinx warning in xilinx_sdfec.rst 2019-12-19 09:26:25 -07:00
netlabel
networking Documentation: net: octeontx2: Add RVU HW and drivers overview 2020-01-27 14:33:40 +01:00
nios2
nvdimm docs: nvdimm: use ReST notation for subsection 2020-01-24 09:54:42 -07:00
openrisc
parisc
PCI Documentation: PCI: Fix pci_alloc_irq_vectors() function name typo 2019-12-30 08:21:29 -06:00
pcmcia
power pci-v5.5-changes 2019-12-03 13:58:22 -08:00
powerpc KVM: PPC: Book3S HV: Implement H_SVM_INIT_ABORT hcall 2020-01-17 15:08:31 +11:00
process It has been a relatively quiet cycle for documentation, but there's still a 2020-01-29 15:27:31 -08:00
RCU Merge branches 'doc.2019.12.10a', 'exp.2019.12.09a', 'fixes.2020.01.24a', 'kfree_rcu.2020.01.24a', 'list.2020.01.10a', 'preempt.2020.01.24a' and 'torture.2019.12.09a' into HEAD 2020-01-24 10:37:27 -08:00
riscv It has been a relatively quiet cycle for documentation, but there's still a 2020-01-29 15:27:31 -08:00
s390
scheduler Documentation/scheduler: fix links in sched-stats 2019-10-29 04:35:41 -06:00
scsi scsi: smartpqi: Update attribute name to driver_version 2019-12-09 19:17:36 -05:00
security Documentation: security: core.rst: fix warnings 2019-11-22 10:01:47 -07:00
sh
sound sound updates for 5.6-rc1 2020-01-28 16:26:57 -08:00
sparc
sphinx docs: Keep up with the location of NoUri 2020-01-24 09:47:05 -07:00
sphinx-static
spi
target
timers
trace docs: ftrace: Fix small notation mistake 2020-01-10 10:52:47 -07:00
translations docs/zh_CN: translate kernel enforcement statement 2019-12-30 12:00:46 -07:00
usb docs: usb: remove some broken references 2020-01-28 13:41:22 -07:00
userspace-api staging: remove isdn capi drivers 2019-12-11 09:11:29 +01:00
virt arm64: KVM: Add UAPI notes for swapped registers 2020-01-23 10:38:14 +00:00
virtual
vm mm/zswap.c: add allocation hysteresis if pool limit is hit 2020-01-31 10:30:39 -08:00
w1 docs: w1: Fix a typo in omap-hdq.rst 2019-12-30 11:58:02 -07:00
watchdog
x86 MPX requires recompiling applications, which requires compiler support. 2020-01-30 16:11:50 -08:00
xtensa
.gitignore
asm-annotations.rst Documentation: Call out example SYM_FUNC_* usage as x86-specific 2020-01-16 12:53:16 -07:00
atomic_bitops.txt
atomic_t.txt
bus-virt-phys-mapping.txt
Changes
CodingStyle
conf.py
COPYING-logo
crc32.txt
debugging-modules.txt
debugging-via-ohci1394.txt
digsig.txt
DMA-API-HOWTO.txt
DMA-API.txt
DMA-attributes.txt dma-mapping: remove the DMA_ATTR_WRITE_BARRIER flag 2019-11-14 12:01:54 -04:00
DMA-ISA-LPC.txt
docutils.conf
dontdiff modpost: dump missing namespaces into a single modules.nsdeps file 2019-11-11 20:10:01 +09:00
futex-requeue-pi.txt
hwspinlock.txt
index.rst Here's the main documentation changes for 5.5: 2019-12-02 11:51:02 -08:00
io_ordering.txt
io-mapping.txt
IPMI.txt
IRQ-affinity.txt
IRQ-domain.txt
IRQ.txt
irqflags-tracing.txt
Kconfig
kobject.txt
kprobes.txt
kref.txt
logo.gif
lzo.txt
mailbox.txt
Makefile Kbuild updates for v5.5 2019-12-02 17:35:04 -08:00
memory-barriers.txt smp_mb__{before,after}_atomic(): update Documentation 2020-02-04 03:05:23 +00:00
nommu-mmap.txt
percpu-rw-semaphore.txt
pi-futex.txt
preempt-locking.txt
rbtree.txt
remoteproc.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt
speculation.txt
static-keys.txt
SubmittingPatches
tee.txt Documentation: tee: add AMD-TEE driver details 2020-01-04 13:49:51 +08:00
this_cpu_ops.txt
unaligned-memory-access.txt
xz.txt