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450b306e54
According to many bugreports [0][1][2] the default ath10k-ct kernel
module is unusable on devices with just 64 MiB RAM or with 128 MiB and
dual ath10k cards. The target boards boot but eventually oom-killer
starts to interfere with normal operation, so the current state is
effectively broken.
Since the two patches in question have a performance impact (and
possibly some other unexpected side-effects) a dedicated build variant
is added so that users of the low RAM devices can still benefit from all
the ath10k-ct advantages.
According to testing [3] results, the issue can be experienced even with
"a 256MB device with three radios". Measured performance impact of
implementing small buffers was lowering "the maximum 5 GHz throughput on
an IPQ40xx device without RPS/XPS optimizations from 494/432 Mbit/s for
TCP transfers (download/upload) to 438/343 Mbit/s"
The patches were apparently inspired by QSDK tweaks used by ODMs for the
affected devices.
[0] http://lists.infradead.org/pipermail/openwrt-devel/2019-December/020573.html
[1] https://github.com/openwrt/openwrt/pull/1077
[2] https://bugs.openwrt.org/index.php?do=details&task_id=2664
[3] https://github.com/freifunk-gluon/gluon/pull/1440#issue-195607701
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
[Remove double CONFIG_ATH10K-CT_LEDS entry]
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit
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5 years ago | |
|---|---|---|
| .. | ||
| acx-mac80211 | 5 years ago | |
| ar7-atm | 7 years ago | |
| ath10k-ct | 5 years ago | |
| avila-wdt | 7 years ago | |
| brcm2708-gpu-fw | 6 years ago | |
| broadcom-wl | 5 years ago | |
| button-hotplug | 5 years ago | |
| cryptodev-linux | 5 years ago | |
| dtc/patches | 7 years ago | |
| gpio-button-hotplug | 5 years ago | |
| gpio-nct5104d | 6 years ago | |
| hwmon-gsc | 7 years ago | |
| i2c-gpio-custom | 5 years ago | |
| kmod-sched-cake | 5 years ago | |
| lantiq | 5 years ago | |
| leds-apu2 | 6 years ago | |
| linux | 5 years ago | |
| mac80211 | 5 years ago | |
| mt76 | 5 years ago | |
| mwlwifi | 5 years ago | |
| nat46 | 5 years ago | |
| om-watchdog | 7 years ago | |
| rtc-rv5c386a | 7 years ago | |
| rtl8812au-ct | 5 years ago | |
| spi-gpio-custom | 6 years ago | |
| trelay | 5 years ago | |
| w1-gpio-custom | 5 years ago | |