Change PREEMPT to PREEMPT_VOLUNTARY: it is a more in the middle interactivity which should be OK for both servers and desktops, Void Linux and Ubuntu have it. Previous value was too much preemption.
* disable Atom ISP as recommended by RussianNeuroMancer because it does not make cameras work on x86 Intel-based tablets where cameras are connected on i2c bus, but makes the camera consome power without working
* enable zswap by default and use the default allocator as in Arch Linux where zswap is enabled by default
https://wiki.archlinux.org/index.php/Zswap
* tune values of sysctls from le9 patch to make it have at least some effect on typical desktop and server systems but avoid too agressive OOM killer on systems with 2 GB RAM and less where OOM killer kills too many process
See discussion and my comments in the thread https://www.linux.org.ru/news/kernel/16052362
* remove not used variant of the patch which did not have any effect
Update existing x86 configs manually
Make an arm64 config based on them instead on the old one which was temporary copypasted from ALT Linux
In most cases I answered to `make ARCH=xxx defconfig` like this:
N/y -> Y
N/m(/y) -> M
Y/n(/m) -> Y
M/n(/y) -> M
But did not enable odd debug.
Probably too much hardware is enabled on arm64.
