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linux/drivers
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Avihai Horon b247f32aec net/mlx5: Dynamically resize flow counters query buffer 
The flow counters bulk query buffer is allocated once during
mlx5_fc_init_stats(). For PFs and VFs this buffer usually takes a little
more than 512KB of memory, which is aligned to the next power of 2, to
1MB. For SFs, this buffer is reduced and takes around 128 Bytes.

The buffer size determines the maximum number of flow counters that
can be queried at a time. Thus, having a bigger buffer can improve
performance for users that need to query many flow counters.

There are cases that don't use many flow counters and don't need a big
buffer (e.g. SFs, VFs). Since this size is critical with large scale,
in these cases the buffer size should be reduced.

In order to reduce memory consumption while maintaining query
performance, change the query buffer's allocation scheme to the
following:
- First allocate the buffer with small initial size.
- If the number of counters surpasses the initial size, resize the
  buffer to the maximum size.

The buffer only grows and isn't shrank, because users with many flow
counters don't care about the buffer size and we don't want to add
resize overhead if the current number of counters drops.

This solution is preferable to the current one, which is less accurate
and only addresses SFs.

Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2021-12-02 16:53:16 -08:00
..
accessibility
acpi Merge branch 'acpi-properties' 2021-11-26 19:45:31 +01:00
amba
android binder: fix test regression due to sender_euid change 2021-11-17 16:08:52 +01:00
ata ata: libata-sata: Declare ata_ncq_sdev_attrs static 2021-11-18 14:34:25 +09:00
atm
auxdisplay
base regmap: allow to define reg_update_bits for no bus configuration 2021-11-15 13:27:13 +00:00
bcma pci-v5.16-changes 2021-11-06 14:36:12 -07:00
block vhost,virtio,vdpa: bugfixes 2021-11-28 11:58:52 -08:00
bluetooth bluetooth-next pull request for net-next: 2021-11-17 14:52:44 +00:00
bus - Config updates for BMIPS platform 2021-11-13 09:11:33 -08:00
cdrom for-5.16/cdrom-2021-10-29 2021-11-01 10:09:14 -07:00
char ipmi:ipmb: Fix unknown command response 2021-11-25 21:17:55 -06:00
clk Devicetree fixes for v5.16, take 1: 2021-11-14 11:11:51 -08:00
clocksource ARM: 2021-11-02 11:24:14 -07:00
comedi comedi: dt9812: fix DMA buffers on stack 2021-10-30 10:54:47 +02:00
connector
counter
cpufreq cpufreq: intel_pstate: ITMT support for overclocked system 2021-11-23 14:11:18 +01:00
cpuidle ARM: SoC drivers for 5.16 2021-11-03 17:00:52 -07:00
crypto pci-v5.16-changes 2021-11-06 14:36:12 -07:00
cxl cxl for v5.16 2021-11-08 11:49:48 -08:00
dax
dca
devfreq Merge branches 'pm-opp' and 'pm-cpufreq' 2021-11-10 14:06:51 +01:00
dio
dma dmaengine updates for v5.16-rc1 2021-11-10 11:47:55 -08:00
dma-buf drm next/fixes for 5.16-rc1 2021-11-12 12:11:07 -08:00
edac - amd64_edac: Add support for three-rank interleaving mode which is 2021-11-01 15:02:49 -07:00
eisa
extcon extcon: usbc-tusb320: Add support for TUSB320L 2021-10-27 14:13:39 +09:00
firewire SCSI misc on 20211105 2021-11-05 08:42:02 -07:00
firmware firmware: smccc: Fix check for ARCH_SOC_ID not implemented 2021-11-22 11:42:59 +01:00
fpga
fsi
gnss
gpio gpio: rockchip: needs GENERIC_IRQ_CHIP to fix build errors 2021-11-16 09:41:44 +01:00
gpu xen: branch for v5.16-rc3 2021-11-26 09:54:13 -08:00
greybus
hid HID: multitouch: Fix Iiyama ProLite T1931SAW (0eef:0001 again!) 2021-11-19 16:00:21 +01:00
hsi HSI changes for the 5.16 series 2021-11-04 13:56:55 -07:00
hv Drivers: hv: balloon: Use VMBUS_RING_SIZE() wrapper for dm_ring_size 2021-11-15 12:35:56 +00:00
hwmon Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
hwspinlock
hwtracing coresight: trbe: Work around write to out of range 2021-10-27 11:46:01 -06:00
i2c i2c: virtio: disable timeout handling 2021-11-23 10:55:48 +01:00
i3c
idle
iio chrome platform changes for 5.16 2021-11-10 11:36:43 -08:00
infiniband Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-11-26 13:45:19 -08:00
input xen: add "not_essential" flag to struct xenbus_driver 2021-11-23 13:41:29 -06:00
interconnect
iommu iommu/vt-d: Fix unmap_pages support 2021-11-26 22:54:47 +01:00
ipack
irqchip irqchip/sifive-plic: Fixup EOI failed when masked 2021-11-12 16:09:51 +00:00
isdn
leds
macintosh Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
mailbox mailbox: imx: support i.MX8ULP S4 MU 2021-10-29 23:03:09 -05:00
mcb
md for-5.16/drivers-2021-11-09 2021-11-09 11:24:08 -08:00
media media fixes for v5.16-rc3 2021-11-22 14:58:57 -08:00
memory memory: mtk-smi: Fix a null dereference for the ostd 2021-11-25 14:46:00 +01:00
memstick
message pci-v5.16-changes 2021-11-06 14:36:12 -07:00
mfd chrome platform changes for 5.16 2021-11-10 11:36:43 -08:00
misc More ACPI updates for 5.16-rc1 2021-11-10 11:52:40 -08:00
mmc mmc: spi: Add device-tree SPI IDs 2021-11-23 12:32:28 +01:00
most most: fix control-message timeouts 2021-10-26 19:12:01 +02:00
mtd for-5.16/drivers-2021-11-09 2021-11-09 11:24:08 -08:00
mux
net net/mlx5: Dynamically resize flow counters query buffer 2021-12-02 16:53:16 -08:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-11-26 13:45:19 -08:00
ntb
nubus
nvdimm libnvdimm for v5.16 2021-11-10 10:56:02 -08:00
nvme nvmet: use IOCB_NOWAIT only if the filesystem supports it 2021-11-25 15:02:40 +01:00
nvmem
of Devicetree fixes for v5.16, take 1: 2021-11-14 11:11:51 -08:00
opp
parisc
parport
pci A set of fixes for the interrupt subsystem: 2021-11-14 10:38:27 -08:00
pcmcia pcmcia: hide the MAC address helpers if !NET 2021-11-22 14:02:52 +00:00
perf ACPI updates for 5.16-rc1 2021-11-02 15:58:39 -07:00
phy phy: marvell: phy-mvebu-cp110-comphy: add support for 5gbase-r 2021-11-23 12:14:48 +00:00
pinctrl pinctrl: qcom: sm8350: Correct UFS and SDC offsets 2021-11-16 02:19:15 +01:00
platform Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid 2021-11-24 09:44:13 -08:00
pnp
power power: supply: bq25890: Fix initial setting of the F_CONV_RATE field 2021-11-02 16:48:47 +01:00
powercap powercap: DTPM: Fix suspend failure and kernel warning 2021-11-10 21:18:14 +01:00
pps
ps3
ptp ptp: ocp: Fix a couple NULL vs IS_ERR() checks 2021-11-18 12:12:55 +00:00
pwm pwm: vt8500: Rename pwm_busy_wait() to make it obviously driver-specific 2021-11-05 11:57:13 +01:00
rapidio rapidio: avoid bogus __alloc_size warning 2021-11-06 13:30:33 -07:00
ras
regulator - Remove Drivers 2021-11-08 12:07:52 -08:00
remoteproc
reset ARM: SoC drivers for 5.16 2021-11-03 17:00:52 -07:00
rpmsg remoteproc updates for v5.16 2021-11-10 09:07:26 -08:00
rtc RTC for 5.16 2021-11-12 11:44:31 -08:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-11-26 13:45:19 -08:00
sbus
scsi vhost,virtio,vdpa: bugfixes 2021-11-28 11:58:52 -08:00
sh
siox
slimbus
soc Merge branch 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2021-11-10 16:15:54 -08:00
soundwire
spi spi: Fixes for v5.16 2021-11-18 14:35:41 -08:00
spmi
ssb
staging Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-11-26 13:45:19 -08:00
target scsi: target: configfs: Delete unnecessary checks for NULL 2021-11-18 23:07:02 -05:00
tc
tee optee: fix kfree NULL pointer 2021-11-16 14:41:23 +01:00
thermal Merge branch 'thermal-int340x' 2021-11-18 20:40:28 +01:00
thunderbolt
tty xen: flag hvc_xen to be not essential for system boot 2021-11-23 13:42:08 -06:00
uio Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM 2021-10-28 11:22:23 +00:00
usb USB: NO_LPM quirk Lenovo Powered USB-C Travel Hub 2021-11-29 12:16:11 +00:00
vdpa vdpa_sim: avoid putting an uninitialized iova_domain 2021-11-24 19:00:29 -05:00
vfio
vhost vhost-vdpa: clean irqs before reseting vdpa device 2021-11-24 19:00:28 -05:00
video xen: branch for v5.16-rc3 2021-11-26 09:54:13 -08:00
virt
virtio Revert "virtio_ring: validate used buffer length" 2021-11-24 18:47:27 -05:00
visorbus
vlynq
vme
w1
watchdog linux-watchdog 5.16-rc1 tag 2021-11-10 09:41:22 -08:00
xen xen: detect uninitialized xenbus in xenbus_init 2021-11-24 08:55:15 -06:00
zorro
Kconfig
Makefile