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Kurt Kanzenbach c6d5f19330 net: stmmac: Calculate CDC error only once 
The clock domain crossing error (CDC) is calculated at every fetch of Tx or Rx
timestamps. It includes a division. Especially on arm32 based systems it is
expensive. It also requires two conditionals in the hotpath.

Add a compensation value cache to struct plat_stmmacenet_data and subtract it
unconditionally in the RX/TX functions which spares the conditionals.

The value is initialized to 0 and if supported calculated in the PTP
initialization code.

Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Link: https://lore.kernel.org/r/20211122111931.135135-1-kurt@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-11-23 20:11:05 -08:00
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accessibility
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acpi
More ACPI updates for 5.16-rc1
2021-11-10 11:52:40 -08:00
amba
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android
Char/Misc driver update for 5.16-rc1
2021-11-04 08:21:47 -07:00
ata
libata: libahci: declare ahci_shost_attr_group as static
2021-11-12 08:05:47 +09:00
atm
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auxdisplay
auxdisplay: cfag12864bfb: code indent should use tabs where possible
2021-10-22 00:13:16 +02:00
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
for-5.16/drivers-2021-11-09
2021-11-09 11:24:08 -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
Char/Misc driver update for 5.16-rc1
2021-11-04 08:21:47 -07:00
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
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counter
counter: Fix use-after-free race condition for events_queue_size write
2021-10-21 13:02:47 +02:00
cpufreq
cpufreq: intel_pstate: Clear HWP Status during HWP Interrupt enable
2021-11-04 19:48:47 +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
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devfreq
Merge branches 'pm-opp' and 'pm-cpufreq'
2021-11-10 14:06:51 +01:00
dio
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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
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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
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
fpga
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fsi
fsi: sbefifo: Use interruptible mutex locking
2021-10-22 09:54:33 +10:30
gnss
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gpio
gpio updates for v5.16
2021-11-08 11:55:21 -08:00
gpu
drm next/fixes for 5.16-rc1
2021-11-12 12:11:07 -08:00
greybus
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hid
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
2021-11-05 08:31:51 -07:00
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
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hwtracing
coresight: trbe: Work around write to out of range
2021-10-27 11:46:01 -06:00
i2c
Revert "Merge branch 'mctp-i2c-driver'"
2021-11-15 07:53:10 -08:00
i3c
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idle
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iio
chrome platform changes for 5.16
2021-11-10 11:36:43 -08:00
infiniband
RDMA/irdma: Set protocol based on PF rdma_mode flag
2021-11-22 08:42:15 -08:00
input
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2021-11-12 11:53:16 -08:00
interconnect
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iommu
pci-v5.16-changes
2021-11-06 14:36:12 -07:00
ipack
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irqchip
irqchip/sifive-plic: Fixup EOI failed when masked
2021-11-12 16:09:51 +00:00
isdn
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leds
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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
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md
for-5.16/drivers-2021-11-09
2021-11-09 11:24:08 -08:00
media
More ACPI updates for 5.16-rc1
2021-11-10 11:52:40 -08:00
memory
Memory controller drivers for v5.16, part two
2021-10-21 21:34:21 +02:00
memstick
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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
Merge branch 'akpm' (patches from Andrew)
2021-11-06 14:08:17 -07:00
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
mux: add support for delay after muxing
2021-10-21 20:02:42 +01:00
net
net: stmmac: Calculate CDC error only once
2021-11-23 20:11:05 -08:00
nfc
nfc: pn533: Fix double free when pn533_fill_fragment_skbs() fails
2021-11-07 19:37:04 +00:00
ntb
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nubus
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nvdimm
libnvdimm for v5.16
2021-11-10 10:56:02 -08:00
nvme
for-5.16/block-2021-11-09
2021-11-09 11:20:07 -08:00
nvmem
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of
Devicetree fixes for v5.16, take 1:
2021-11-14 11:11:51 -08:00
opp
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parisc
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parport
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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
Pin control changes for the v5.16 kernel cycle
2021-11-05 08:24:17 -07:00
platform
chrome platform changes for 5.16
2021-11-10 11:36:43 -08:00
pnp
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power
power: supply: bq25890: Fix initial setting of the F_CONV_RATE field
2021-11-02 16:48:47 +01:00
powercap
powercap/drivers/dtpm: Fix power limit initialization
2021-10-21 16:03:31 +02:00
pps
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ps3
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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
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regulator
- Remove Drivers
2021-11-08 12:07:52 -08:00
remoteproc
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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
ethtool: extend ringparam setting/getting API with rx_buf_len
2021-11-22 12:31:49 +00:00
sbus
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scsi
SCSI misc on 20211112
2021-11-12 12:25:50 -08:00
sh
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siox
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slimbus
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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
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spi
spi: Updates for v5.16
2021-11-01 19:09:04 -07:00
spmi
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ssb
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staging
net: annotate accesses to queue->trans_start
2021-11-17 14:56:16 +00:00
target
SCSI misc on 20211112
2021-11-12 12:25:50 -08:00
tc
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tee
Char/Misc driver update for 5.16-rc1
2021-11-04 08:21:47 -07:00
thermal
thermal: int340x: fix build on 32-bit targets
2021-11-12 10:56:25 -08:00
thunderbolt
thunderbolt: Changes for v5.16 merge window
2021-10-25 13:17:29 +02:00
tty
TTY / Serial driver update for 5.16-rc1
2021-11-04 09:09:37 -07:00
uio
Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM
2021-10-28 11:22:23 +00:00
usb
USB fixes for 5.16-rc1
2021-11-11 09:40:15 -08:00
vdpa
vhost,virtio,vhost: fixes,features
2021-11-03 15:00:39 -07:00
vfio
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vhost
vdpa: Introduce and use vdpa device get, set config helpers
2021-11-01 05:26:49 -04:00
video
parisc/sticon: fix reverse colors
2021-11-17 11:04:02 +01:00
virt
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virtio
virtio-mem: support VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE
2021-11-10 15:32:38 +01:00
visorbus
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vlynq
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vme
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w1
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watchdog
linux-watchdog 5.16-rc1 tag
2021-11-10 09:41:22 -08:00
xen
xen: branch for v5.16-rc1
2021-11-10 11:14:21 -08:00
zorro
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Kconfig
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Makefile
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