linux/Documentation
Jakub Kicinski c91c46de6b net: provide macros for commonly copied lockless queue stop/wake code
A lot of drivers follow the same scheme to stop / start queues
without introducing locks between xmit and NAPI tx completions.
I'm guessing they all copy'n'paste each other's code.
The original code dates back all the way to e1000 and Linux 2.6.19.

Smaller drivers shy away from the scheme and introduce a lock
which may cause deadlocks in netpoll.

Provide macros which encapsulate the necessary logic.

The macros do not prevent false wake ups, the extra barrier
required to close that race is not worth it. See discussion in:
https://lore.kernel.org/all/c39312a2-4537-14b4-270c-9fe1fbb91e89@gmail.com/

Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-04-10 17:56:18 -07:00
..
ABI docs: sysfs-block: document hidden sysfs entry 2023-03-07 16:40:52 -07:00
accel
accounting
admin-guide Documentation/security-bugs: move from admin-guide/ to process/ 2023-03-12 15:56:43 +01:00
arc
arm
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block block: stub out and deprecated the capability attribute on the gendisk 2023-02-06 08:44:55 -07:00
bpf Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-03-09 22:22:11 -08:00
cdrom
core-api - Daniel Verkamp has contributed a memfd series ("mm/memfd: add 2023-02-23 17:09:35 -08:00
cpu-freq
crypto
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doc-guide
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fault-injection docs: fault-injection: add requirements of error injectable functions 2023-02-02 22:50:00 -08:00
fb
features
filesystems A handful of fixes and minor documentation updates. 2023-03-14 11:08:28 -07:00
firmware_class
firmware-guide ACPI: docs: enumeration: Correct reference to the I²C device data type 2023-03-07 14:09:49 +01:00
fpga
gpu drm next for 6.3-rc1 2023-02-22 18:28:03 -08:00
hid It has been a moderately calm cycle for documentation; the significant 2023-02-22 12:00:20 -08:00
hwmon hwmon: constify pointers to hwmon_channel_info 2023-04-07 08:45:17 -07:00
i2c Documentation: i2c: correct spelling 2023-02-15 20:59:44 +01:00
ia64
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kbuild Kbuild updates for v6.3 2023-02-26 11:53:25 -08:00
kernel-hacking
leds - Remove Drivers 2023-02-23 15:09:31 -08:00
litmus-tests
livepatch Documentation: livepatch: module-elf-format: Remove local klp_modinfo definition 2023-02-06 08:45:55 -08:00
locking docs: locking: refer to the actual existing config names 2023-02-23 12:26:00 -07:00
loongarch
m68k
maintainer docs: rebasing-and-merging: Drop wrong statement about git 2023-03-07 10:26:22 -07:00
mhi
mips
misc-devices
mm docs/mm: hugetlbfs_reserv: fix a reference to a file that doesn't exist 2023-03-07 10:31:49 -07:00
netlabel
netlink tools: ynl: populate most of the ethtool spec 2023-03-30 23:29:57 -07:00
networking net: provide macros for commonly copied lockless queue stop/wake code 2023-04-10 17:56:18 -07:00
nios2
nvdimm
nvme
openrisc
parisc
PCI ixgb: Remove ixgb driver 2023-03-19 10:51:07 +00:00
pcmcia
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powerpc
process Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-04-06 12:01:20 -07:00
RCU
riscv Documentation: riscv: fix insufficient list item indent 2023-02-14 16:00:02 -08:00
rust Documentation: rust: Fix arch support table 2023-02-13 10:14:32 +01:00
s390 VFIO updates for v6.3-rc1 2023-02-25 11:52:57 -08:00
scheduler sched/doc: supplement CPU capacity with RISC-V 2023-03-07 10:19:04 -07:00
scsi SCSI misc on 20230222 2023-02-22 13:41:41 -08:00
security
sh
sound It has been a moderately calm cycle for documentation; the significant 2023-02-22 12:00:20 -08:00
sparc Documentation: sparc: correct spelling 2023-02-02 11:07:02 -07:00
sphinx docs: Use HTML comments for the kernel-toc SPDX line 2023-02-16 16:06:44 -07:00
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spi
staging
target scsi: target: Documentation: Correct spelling 2023-02-08 18:49:48 -05:00
timers
tools Documentation/rtla: Add hwnoise man page 2023-02-13 23:56:46 -05:00
trace Char/Misc and other driver subsystem changes for 6.3-rc1 2023-02-24 12:47:33 -08:00
translations Driver core fixes for 6.3-rc5 2023-04-02 10:10:16 -07:00
usb docs: usb: Add documentation for the UVC Gadget 2023-03-09 15:18:33 +01:00
userspace-api docs: netlink: document the sub-type attribute property 2023-03-28 23:54:43 -07:00
virt docs: kvm: x86: Fix broken field list 2023-04-04 13:22:05 -04:00
w1
watchdog Documentation/watchdog/hpwdt: Fix Format 2023-02-16 17:31:29 -07:00
x86 It has been a moderately calm cycle for documentation; the significant 2023-02-22 12:00:20 -08:00
xtensa
.gitignore
arch.rst
atomic_bitops.txt
atomic_t.txt
Changes
CodingStyle
conf.py It has been a moderately calm cycle for documentation; the significant 2023-02-22 12:00:20 -08:00
docutils.conf
dontdiff
index.rst Documentation: front page: use recommended heading adornments 2023-02-23 12:44:51 -07:00
Kconfig
Makefile
memory-barriers.txt
SubmittingPatches
subsystem-apis.rst