Compaction is the only memory management component to form high order (larger
physically contiguous) memory blocks reliably. The page allocator relies on
compaction heavily and the lack of the feature can lead to unexpected OOM
killer invocations for high order memory requests. You shouldn't disable this
option unless there really is a strong reason for it.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Michal Hrusecky <michal.hrusecky@nic.cz>
Refreshed all patches
Remove upstreamed patches.
- 103-MIPS-ath79-fix-register-address-in-ath79_ddr_wb_flus.patch
- 403-mtd_fix_cfi_cmdset_0002_status_check.patch
- 001-4.11-01-mtd-m25p80-consider-max-message-size-in-m25p80_read.patch
- 001-4.15-08-bcm63xx_enet-correct-clock-usage.patch
- 001-4.15-09-bcm63xx_enet-do-not-write-to-random-DMA-channel-on-B.patch
- 900-gen_stats-fix-netlink-stats-padding.patch
Introduce a new backported patch to address ext4 breakage, introduced in 4.9.112
- backport-4.9/500-ext4-fix-check-to-prevent-initializing-reserved-inod.patch
This patch has been slightly altered to compensate for a new helper function
introduced in later kernels.
Also add ARM64_SSBD symbol to ARM64 targets still running kernel 4.9
Compile-tested on: ar71xx, bcm2710
Runtime-tested on: ar71xx
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
Add a new config option to allow to select the default compile
optimization level for the kernel.
Select the optimization for size by default if the small_flash feature is
set. Otherwise "Optimize for performance" is set.
Add the small_flash feature flag to all (sub)targets which had the
optimization for size in their default kernel config.
Remove CC_OPTIMIZE_FOR_* symbols from all kernel configs to apply the new
setting.
Exceptions to the above are:
- lantiq, where the optimization for size is only required for the
xway_legacy subtarget but was set for the whole target
- mediatek, ramips/mt7620 & ramips/mt76x8 where boards should have
plenty of space and an optimization for size doesn't make much sense
- rb532, which has 128MByte flash
Signed-off-by: Mathias Kresin <dev@kresin.me>
These options are handled by generic configuration
Targets that need these options should select KERNEL_DEVMEM
and/or KERNEL_DEVKMEM options on OpenWRT's config
Signed-off-by: Luis Araneda <luaraneda@gmail.com>
The harden branch predictor was backported for arm64 with 4.9.92-96.
Fixes: 9aa196e0f2 ("kernel: bump 4.9 to bump 4.9.96")
Signed-off-by: Mathias Kresin <dev@kresin.me>
Some layerscape devices (ls1012ardb/ls1012afrdm/ls1046ardb/ls1088ardb)
were using ext4 rootfs because there were issues using squashfs.
This patch is to drop using ext4 rootfs and use ubifs rootfs instead
which is more proper for SPI-NOR flash.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Disable CONFIG_PROC_PAGE_MONITOR in most places and only keep it enabled
for virtual targets such as malta or potent ones like x86.
This saves up to 4KB of uncompressed kernel size and significantly
decreases CPU load under certain workloads.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
While bumping 4.14, the kernel build failed due to missing CONFIG_KASAN
symbol. Move it to generic config instead of defining it for all arm64
and x86/64 targets.
It was only added in 4.0, so not needed in config-3.18.
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Some new options were introduced by kernel patches.
And some options should be removed/added.
The config-4.9 should be updated accordingly.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Some targets need 4K sectors for small flash chips (e.g. some
routerboards, where the entire chip is just one "erase block"), whereas
on other devices 4K sectors lead to horrible flash erase/write
performance.
Set the default limit in the generic kernel configuration to 4 MiB to
ensure that all new platforms don't use 4K sectors for bigger flash
chips. On all existing targets use 16 MiB for now to avoid regressions.
They will be changed individually in follow-up commits.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
These conflict with the kmod packages (such as nf-netlink)
Signed-off-by: Mathew McBride <matt@traverse.com.au>
[Add same changes for arm8_32b subtarget and refresh config]
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
These options are deactivating some kernel modules for IP blocks not
uses on this SoC. I saw the same when working with the ARM64 Marvell
board so it is better to move them to generic.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This patch is to add linux 4.9 support for layerscape.
All these kernel patches are from NXP LSDK 1709 release.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
