microsoft
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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/drivers
История
Uros Bizjak bbf5410bc6 nvmet: use try_cmpxchg in nvmet_update_sq_head 
Use try_cmpxchg instead of cmpxchg (*ptr, old, new) == old in
nvmet_update_sq_head.  x86 CMPXCHG instruction returns success in ZF flag, so
this change saves a compare after cmpxchg (and related move instruction in
front of cmpxchg).

Also, try_cmpxchg implicitly assigns old *ptr value to "old" when cmpxchg
fails. There is no need to re-read the value in the loop.

Note that the value from *ptr should be read using READ_ONCE to prevent
the compiler from merging, refetching or reordering the read.

No functional change intended.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
 		2022-11-15 10:49:48 +01:00
..
accessibility
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acpi ACPI fixes for 6.1-rc2 2022-10-21 18:08:30 -07:00
amba
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android Scheduler changes for v6.1: 2022-10-10 09:10:28 -07:00
ata ata: ahci_qoriq: Fix compilation warning 2022-10-18 08:02:14 +09:00
atm
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auxdisplay
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base Interrupt subsystem updates: 2022-10-12 10:23:24 -07:00
bcma Interrupt subsystem updates: 2022-10-12 10:23:24 -07:00
block drbd: Store op in drbd_peer_request 2022-11-09 12:40:36 -07:00
bluetooth
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bus Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
cdrom
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char This push fixes an issue exposed by the recent change to feed 2022-10-17 10:20:04 -07:00
clk This is the final part of the clk patches for this merge window. 2022-10-16 11:08:19 -07:00
clocksource A boring time, timekeeping, timers update: 2022-10-10 10:16:00 -07:00
comedi
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connector
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counter gpio updates for v6.1-rc1 2022-10-08 09:46:29 -07:00
cpufreq cpufreq: sun50i: Switch to use dev_err_probe() helper 2022-10-18 16:22:26 +05:30
cpuidle RISC-V Patches for the 6.1 Merge Window, Part 1 2022-10-09 13:24:01 -07:00
crypto This update includes the following changes: 2022-10-10 13:04:25 -07:00
cxl
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dax libnvdimm for 6.1 2022-10-14 18:41:41 -07:00
dca
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devfreq
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dio
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dma treewide: use get_random_bytes() when possible 2022-10-11 17:42:58 -06:00
dma-buf whack-a-mole: cropped up open-coded file_inode() uses... 2022-10-06 17:22:11 -07:00
edac Merge patch series "Use composable cache instead of L2 cache" 2022-10-13 11:07:13 -07:00
eisa
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extcon Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
firewire
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firmware efi: runtime: Don't assume virtual mappings are missing if VA == PA == 0 2022-10-21 11:09:41 +02:00
fpga Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
fsi fsi: core: Check error number after calling ida_simple_get 2022-09-28 21:10:57 +09:30
gnss
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gpio Interrupt subsystem updates: 2022-10-12 10:23:24 -07:00
gpu 17 hotfixes, mainly for MM. 5 are cc:stable and the remainder address 2022-10-21 12:33:03 -07:00
greybus
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hid for-linus-2022102101 2022-10-21 17:41:57 -07:00
hsi
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hte
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hv hyperv-next for 6.1 2022-10-10 13:59:01 -07:00
hwmon - Use the correct CPU capability clearing function on the error path in 2022-10-23 10:01:34 -07:00
hwspinlock
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hwtracing Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
i2c i2c: mlxbf: depend on ACPI; clean away ifdeffage 2022-10-21 07:59:35 +02:00
i3c i3c: master: Remove the wrong place of reattach. 2022-10-12 23:45:29 +02:00
idle
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iio Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
infiniband treewide: use get_random_u32() when possible 2022-10-11 17:42:58 -06:00
input Input updates for 6.1 merge window: 2022-10-11 10:53:25 -07:00
interconnect
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iommu iommu/vt-d: Clean up si_domain in the init_dmars() error path 2022-10-21 10:49:35 +02:00
ipack Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
irqchip Interrupt subsystem updates: 2022-10-12 10:23:24 -07:00
isdn mISDN: hfcpci: Fix use-after-free bug in hfcpci_softirq 2022-10-09 19:11:54 +01:00
leds This is very quiet release for LEDs, pca963 got blinking support and 2022-10-14 13:14:03 -07:00
macintosh powerpc updates for 6.1 2022-10-09 14:05:15 -07:00
mailbox mailbox: qcom-ipcc: flag IRQ NO_THREAD 2022-10-05 21:51:58 -05:00
mcb
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md md/raid1: stop mdx_raid1 thread when raid1 array run failed 2022-11-14 10:15:35 -08:00
media media fixes for v6.1-rc2 2022-10-22 15:30:15 -07:00
memory
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memstick
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message
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mfd Revert "mfd: syscon: Remove repetition of the regmap_get_val_endian()" 2022-10-23 12:04:56 -07:00
misc treewide: use get_random_u32() when possible 2022-10-11 17:42:58 -06:00
mmc Random number generator fixes for Linux 6.1-rc1. 2022-10-16 15:27:07 -07:00
most
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mtd Random number generator fixes for Linux 6.1-rc1. 2022-10-16 15:27:07 -07:00
mux
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net Networking fixes for 6.1-rc2, including fixes from netfilter 2022-10-20 17:24:59 -07:00
nfc
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ntb
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nubus
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nvdimm libnvdimm for 6.1 2022-10-14 18:41:41 -07:00
nvme nvmet: use try_cmpxchg in nvmet_update_sq_head 2022-11-15 10:49:48 +01:00
nvmem
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of Devicetree updates for v6.1: 2022-10-10 13:13:51 -07:00
opp
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parisc parisc architecture fixes and updates for kernel v6.1-rc1: 2022-10-14 12:10:01 -07:00
parport
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pci PCI/P2PDMA: Allow userspace VMA allocations through sysfs 2022-11-09 11:29:21 -07:00
pcmcia
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peci
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perf arm64 fixes: 2022-10-14 12:38:03 -07:00
phy pci-v6.1-changes 2022-10-11 11:08:18 -07:00
pinctrl Interrupt subsystem updates: 2022-10-12 10:23:24 -07:00
platform LoongArch changes for v6.1 2022-10-12 10:35:20 -07:00
pnp Merge branches 'acpi-apei', 'acpi-wakeup', 'acpi-reboot' and 'acpi-thermal' 2022-10-10 18:11:11 +02:00
power power supply and reset changes for the v6.1 series 2022-10-07 11:48:30 -07:00
powercap Scheduler changes for v6.1: 2022-10-10 09:10:28 -07:00
pps
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ps3
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ptp ] ptp: ocp: remove symlink for second GNSS 2022-10-10 08:37:24 +01:00
pwm pwm: Changes for v6.1-rc1 2022-10-07 11:32:10 -07:00
rapidio
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ras
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regulator - Core Frameworks 2022-10-07 11:24:20 -07:00
remoteproc remoteproc: virtio: Fix warning on bindings by removing the of_match_table 2022-10-05 09:20:44 -06:00
reset Here's the main clk pull request for this merge window. We have some 2022-10-08 10:06:48 -07:00
rpmsg
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rtc RTC for 6.1 2022-10-14 18:36:42 -07:00
s390 s390 updates for the 6.1 merge window #2 2022-10-14 11:36:05 -07:00
sbus
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scsi blk-mq: pass a tagset to blk_mq_wait_quiesce_done 2022-11-02 08:35:34 -06:00
sh
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siox
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slimbus
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soc Merge patch series "Use composable cache instead of L2 cache" 2022-10-13 11:07:13 -07:00
soundwire soundwire updates for 6.1-rc1 2022-10-07 16:13:55 -07:00
spi spi: Updates for v6.1 2022-10-04 19:36:53 -07:00
spmi spmi: pmic-arb: increase SPMI transaction timeout delay 2022-09-30 14:33:23 +02:00
ssb
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staging media fixes for v6.1-rc2 2022-10-22 15:30:15 -07:00
target treewide: use get_random_u32() when possible 2022-10-11 17:42:58 -06:00
tc
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tee - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in 2022-10-10 17:53:04 -07:00
thermal thermal: intel_powerclamp: Use first online CPU as control_cpu 2022-10-15 19:33:57 +02:00
thunderbolt treewide: use get_random_u32() when possible 2022-10-11 17:42:58 -06:00
tty parisc architecture fixes and updates for kernel v6.1-rc1: 2022-10-14 12:10:01 -07:00
ufs blk-mq: move the call to blk_put_queue out of blk_mq_destroy_queue 2022-10-25 08:25:10 -06:00
uio
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usb - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in 2022-10-10 17:53:04 -07:00
vdpa virtio: fixes, features 2022-10-10 14:02:53 -07:00
vfio VFIO updates for v6.1-rc1 2022-10-12 14:46:48 -07:00
vhost virtio: fixes, features 2022-10-10 14:02:53 -07:00
video Random number generator fixes for Linux 6.1-rc1. 2022-10-16 15:27:07 -07:00
virt Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
virtio virtio_pci: use irq to detect interrupt support 2022-10-13 09:33:03 -04:00
vlynq
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w1 Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
watchdog linux-watchdog 6.1-rc2 tag 2022-10-21 12:25:39 -07:00
xen xen: branch for v6.1-rc2 2022-10-21 14:43:09 -07:00
zorro
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Kconfig
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Makefile
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