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c7ede4f044
linux/drivers
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Guixin Liu c7ede4f044 scsi: target: tcmu: Make cmd_ring_size changeable via configfs 
Make cmd_ring_size changeable similar to the way it is done for
max_data_area_mb. The reason is that our tcmu client will create thousands
of tcmu instances, and this will consume lots of mem with default 8Mb cmd
ring size for every backstore.

One can change the value by typing:

    echo "cmd_ring_size_mb=N" > control

The "N" is a integer between 1 to 8, if set 1, the cmd ring can hold about
6k cmds(tcmu_cmd_entry about 176 byte) at least.

The value is printed when doing:

    cat info

In addition, a new readonly attribute 'cmd_ring_size_mb' returns the value
in read.

Link: https://lore.kernel.org/r/1644978109-14885-1-git-send-email-kanie@linux.alibaba.com
Reviewed-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
Reviewed-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-22 21:11:07 -05:00
..
accessibility Char/Misc and other driver changes for 5.17-rc1 2022-01-14 16:02:28 +01:00
acpi Merge branch 'akpm' (patches from Andrew) 2022-01-22 11:28:23 +02:00
amba
android
ata ata: pata_octeon_cf: fix call to trace_ata_bmdma_stop() 2022-01-21 18:39:16 +09:00
atm atm: iphase: remove redundant pointer skb 2022-01-13 12:50:48 +00:00
auxdisplay
base firmware_loader: move firmware sysctl to its own files 2022-01-22 08:33:35 +02:00
bcma
block bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
bluetooth virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes 2022-01-18 10:05:48 +02:00
bus pci-v5.17-changes 2022-01-16 08:08:11 +02:00
cdrom cdrom: simplify subdirectory registration with register_sysctl() 2022-01-22 08:33:35 +02:00
char random: move the random sysctl declarations to its own file 2022-01-22 08:33:35 +02:00
clk Some hot fixes for clk driver patches merged last week 2022-01-21 09:16:11 +02:00
clocksource - Refactor resource allocation on the Exynos_mct driver without 2022-01-10 13:53:16 +01:00
comedi
connector
counter counter: 104-quad-8: Fix use-after-free by quad8_irq_handler 2022-01-06 15:51:13 +01:00
cpufreq cpufreq: amd-pstate: Fix Kconfig dependencies for AMD P-State 2022-01-06 18:31:33 +01:00
cpuidle cpuidle: use default_groups in kobj_type 2022-01-05 18:31:17 +01:00
crypto virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes 2022-01-18 10:05:48 +02:00
cxl cxl/core: Remove cxld_const_init in cxl_decoder_alloc() 2022-01-04 17:29:31 -08:00
dax Merge branch 'akpm' (patches from Andrew) 2022-01-15 20:37:06 +02:00
dca
devfreq
dio
dma dmaengine updates for v5.17-rc1 2022-01-18 14:03:34 +02:00
dma-buf drm fixes for 5.17-rc1: 2022-01-16 06:52:38 +02:00
edac - Add support for version 3 of the Synopsys DDR controller to synopsys_edac 2022-01-10 11:45:23 -08:00
eisa
extcon
firewire
firmware RISC-V: Introduce sv48 support without relocatable kernel 2022-01-19 19:37:44 -08:00
fpga
fsi
gnss
gpio gpio fixes for v5.17-rc1 2022-01-20 17:38:23 +02:00
gpu bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
greybus
hid HID: wacom: Avoid using stale array indicies to read contact count 2022-01-21 15:10:02 +01:00
hsi
hv hyperv-next for 5.17 2022-01-16 15:53:00 +02:00
hwmon bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
hwspinlock
hwtracing
i2c virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes 2022-01-18 10:05:48 +02:00
i3c i3c: master: dw: check return of dw_i3c_master_get_free_pos() 2022-01-13 02:05:50 +01:00
idle
iio bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
infiniband scsi: iscsi: Stop using the SCSI pointer 2022-02-22 21:11:04 -05:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2022-01-17 08:27:55 +02:00
interconnect
iommu virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes 2022-01-18 10:05:48 +02:00
ipack
irqchip Rework of the MSI interrupt infrastructure: 2022-01-13 09:05:29 -08:00
isdn
leds LED updates for 5.17. Nothing major is happening here. 2022-01-12 16:59:22 -08:00
macintosh macintosh/mac_hid.c: simplify subdirectory registration with register_sysctl() 2022-01-22 08:33:35 +02:00
mailbox - qcom: misc updates to qcom-ipcc driver 2022-01-13 11:19:07 -08:00
mcb
md dax + libnvdimm for v5.17 2022-01-12 15:46:11 -08:00
media bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
memory MTD core changes: 2022-01-11 11:35:28 -08:00
memstick
message scsi: message: fusion: Use GFP_KERNEL 2022-02-11 17:09:27 -05:00
mfd driver core changes for 5.17-rc1 2022-01-12 11:11:34 -08:00
misc pci-v5.17-changes 2022-01-16 08:08:11 +02:00
mmc bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
most
mtd - added support for more BCM47XX based devices 2022-01-14 15:08:36 +01:00
mux
net bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
nfc nfc: st21nfca: Fix potential buffer overflows in EVT_TRANSACTION 2022-01-12 14:17:45 +00:00
ntb New AMD PCI ID for NTB, and a number of bug fixes for ntb_hw_switchtec 2022-01-17 08:14:18 +02:00
nubus proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
nvdimm virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes 2022-01-18 10:05:48 +02:00
nvme for-5.17/drivers-2022-01-11 2022-01-12 10:35:23 -08:00
nvmem
of Devicetree fixes for v5.17, take 1: 2022-01-22 09:52:17 +02:00
opp
parisc Merge branch 'akpm' (patches from Andrew) 2022-01-22 11:28:23 +02:00
parport
pci bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
pcmcia pci-v5.17-changes 2022-01-16 08:08:11 +02:00
perf Rework of the MSI interrupt infrastructure: 2022-01-13 09:05:29 -08:00
phy Char/Misc and other driver changes for 5.17-rc1 2022-01-14 16:02:28 +01:00
pinctrl Pin control bulk changes for the v5.17 kernel cycle 2022-01-12 10:56:08 -08:00
platform proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
pnp proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
power platform-drivers-x86 for v5.17-1 2022-01-11 11:26:57 -08:00
powercap
pps
ps3
ptp net: fix SOF_TIMESTAMPING_BIND_PHC to work with multiple sockets 2022-01-06 12:18:08 +00:00
pwm pwm: Changes for v5.17-rc1 2022-01-20 13:25:01 +02:00
rapidio
ras
regulator regulator: Add MAX20086-MAX20089 driver 2022-01-07 13:36:35 +00:00
remoteproc
reset SoC: Add support for StarFive JH7100 RISC-V SoC 2022-01-10 08:32:37 -08:00
rpmsg virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes 2022-01-18 10:05:48 +02:00
rtc rtc: sunplus: fix return value in sp_rtc_probe() 2022-01-16 23:50:34 +01:00
s390 scsi: zfcp: Fix failed recovery on gone remote port with non-NPIV FCP devices 2022-01-24 23:30:27 -05:00
sbus
scsi scsi: qla2xxx: Use named initializers for q_dev_state 2022-02-22 21:11:07 -05:00
sh
siox
slimbus
soc bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
soundwire Char/Misc and other driver changes for 5.17-rc1 2022-01-14 16:02:28 +01:00
spi sound updates for 5.17-rc1 2022-01-14 14:55:38 +01:00
spmi
ssb
staging Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2022-01-17 05:49:30 +02:00
target scsi: target: tcmu: Make cmd_ring_size changeable via configfs 2022-02-22 21:11:07 -05:00
tc
tee ARM: SoC driver updates for v5.17 2022-01-10 08:13:52 -08:00
thermal thermal: int340x: Add Raptor Lake PCI device id 2022-01-17 19:48:07 +01:00
thunderbolt
tty bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
uio
usb scsi: usb: Stop using the SCSI pointer 2022-02-22 21:11:07 -05:00
vdpa virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes 2022-01-18 10:05:48 +02:00
vfio VFIO updates for v5.17-rc1 2022-01-20 13:31:46 +02:00
vhost vdpa: Protect vdpa reset with cf_mutex 2022-01-14 18:50:54 -05:00
video drm fixes for 5.17-rc1: 2022-01-16 06:52:38 +02:00
virt bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
virtio vdpa: Allow to configure max data virtqueues 2022-01-14 18:50:53 -05:00
visorbus
vlynq
vme
w1
watchdog linux-watchdog 5.17-rc1 tag 2022-01-17 08:07:57 +02:00
xen arm/xen: Read extended regions from DT and init Xen resource 2022-01-06 09:53:41 +01:00
zorro proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
Kconfig
Makefile