This imports a couple of memory management hacks used by Oplus (Oppo, Realme, and OnePlus) on their recent devices. This patch does the following:
- Add a separate swappiness (default 60) value to use if task isn't handled by kswapd
- Don't throttle tasks with OOM value < 0
- Increase zsmalloc's maximum page order
Signed-off-by: Dark-Matter7232 <kerneldeveloper7232@gmail.com>
[TenSeventy7: Make the Kconfig more descriptive]
Signed-off-by: John Vincent <git@tenseventyseven.cf>
[Flopster101: Adapt to 5.10. Hardcode ISOLATED_BITS value and don't set ZS_MAX_ZSPAGE_ORDER]
Signed-off-by: Nahuel Gómez <nahuelgomez329@gmail.com>
Backport zsmalloc from commit 5994eabf3bbb ("merge mm-hotfixes-stable into
mm-stable to pick up depended-upon changes").
Signed-off-by: Juhyung Park <qkrwngud825@gmail.com>
Some architectures have implemented optimized copy_page for full page
copying, such as arm.
On my arm platform, use the copy_page helper for single page copying is
about 10 percent faster than memcpy.
Link: https://lkml.kernel.org/r/20231006060245.7411-1-mark-pk.tsai@mediatek.com
Signed-off-by: Mark-PK Tsai <mark-pk.tsai@mediatek.com>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: YJ Chiang <yj.chiang@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
