Extend the small_flash feature to disable swap, core dumps, and
kernel debug info, and change the squashfs block size to 1024KiB.
Also change squashfs fragment cache to 2 for small_flash to ease memory
usage.
Signed-off-by: Alex Maclean <monkeh@monkeh.net>
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>
In order for monitoring tools such as atop and htop to track and report
i/o data, kernel support for task statistics and io accounting is
required.
Add a config option to enable building this support in the kernel.
Signed-off-by: Jeremiah McConnell <miah@miah.com>
It was only enabled when the target was added back in commit 9b321bc
("lantiq: add Amazon-SE subtarget")
Leave pistachio alone as devices of this target are not likely have
small_flash or low_mem constraint
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
To make it more accessible for nodejs users to configure and run a build
on mips target lacking hardware fpu
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Multicast routing support is not needed in most setups, and increases the
size of the kernel considerably (>10K after LZMA). Add a config switch to
allow disabling it.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
While we have CRASHLOG on MIPS it makes sense to support 'classic'
kexec-based CRASH_DUMP on x86 and arm platforms.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
It could cause crashes with some forms of virtualization, and it is
unlikely to work properly with most systems.
It's safer to just disable it.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
These options are needed to create /dev/mem or /dev/kmem .
/dev/mem is needed by the io tool to access raw hardware memory, which
is helpful when debugging and developing drivers.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: John Crispin <john@phrozen.org>
This makes it possible to activate the gpio and the pinctl debugging
from LEDE menuconfig.
Acked-by: John Crispin <john@phrozen.org>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Enable selection of the kernel key retention framework and some of its
additional facilities; see Documentation/security/keys.txt and
security/keys/Kconfig for details
Signed-off-by: Nathaniel Wesley Filardo <nwfilardo@gmail.com>
Make global options menuconfig cleaner by moving POSIX ACL
and attr support options into a submenu.
Signed-off-by: Daniel Dickinson <openwrt@daniel.thecshore.com>
This adds a configuration options that allows to make filesystem ACL support
the default in the kernel, except for old nfs.
Signed-off-by: Daniel Dickinson <openwrt@daniel.thecshore.com>
Add the basic set of kernel options to allow it from mounting a NFS root
and boot from it.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
SVN-Revision: 48590
These allow the generated kernel's build metadata to be defined explicitly.
This metadata is reported, eg, at boot time and in `uname -a` on running
systems. If the variables aren't configured, the current build system username
and hostname are used as normal.
The motivation for this option is to achive reproducible (bit-for-bit
identical) kernel builds of official openwrt releases.
Signed-off-by: bryan newbold <bnewbold@robocracy.org>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 48541
Revision 46834 changed IPv6 support from a module to builtin. But
since the configuration of the IPv6 kernel options was left in
package/kernel/linux/modules/netsupport.mk, this means that an
empty kmod-ipv6 module was still being generated (not packaged).
This patch moves the configuration of the IPv6 kernel options to
config/Config-kernel.in to remove this last bit of the module.
Note that CONFIG_IPV6_PRIVACY was dropped (enabled by default
since Linux v3.13), so this option is no longer needed.
See 5d9efa7ee9
Signed-off-by: Arjen de Korte <arjen+openwrt@de-korte.org>
SVN-Revision: 48132
Memory Resource Controller no longer depends on Resource counters since
Kernel version 4.0.
3.18 is the only still supported version needing Resource counters for
MEMCG, thus declare the dependency only for that version.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
SVN-Revision: 46024
This is needed by many services to function properly and as
all modern distributions got it enabled, it starts to be a
de-facto standard, i.e. user-space starts to silently depend
on it.
This also pulls in EXPORTFS, however, the kernel binary size
increases only a little.
On ARM systems comes down to 800 bytes uncompressed and about
200 bytes compressed size.
On MIPS systems it's about 1.2 kB size increase of the LZMA
compressed kernel.
v2: use menuconfig option instead of just enabling the option
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
SVN-Revision: 44765
Non-functional changes to config/Config-*.in files, including:
* spelling mistakes
* inconsistent terminology
* grammar
* overly long lines in "help" components
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
SVN-Revision: 42519
This change does multiple things, all related to enable sparse usage as
a static analysis tool selectable from the OpenWrt configuration:
*add a KERNEL_SPARSE option in the config to add sparse to the kernel
build (through the C=1 option usage)
*add sparse as a new host tools. It will get selected automatically when
the above option will be enabled
Signed-off-by: Mathieu Olivari <mathieu@qca.qualcomm.com>
SVN-Revision: 40490
Recent lxc versions are not useful if this option is not enabled. That said,
enable KERNEL_POSIX_MQUEUE by default when KERNEL_LXC_MISC is selected.
Signed-off-by: Luka Perkov <luka@openwrt.org>
SVN-Revision: 39385
Alex Maclean
Mathias Kresin
Jeremiah McConnell
Hauke Mehrtens
Yousong Zhou
Matthias Schiffer
Sascha Paunovic
Florian Fainelli
Daniel Golle
Felix Fietkau
Nathaniel Wesley Filardo
Daniel Dickinson
John Crispin
Florian Fainelli
Felix Fietkau
John Crispin
Luka Perkov
Nicolas Thill
Rafał Miłecki
Steven Barth
Imre Kaloz