Commit Graph

45 Commits

Author SHA1 Message Date
Alex Maclean
11d6547455 config: extend small_flash feature
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>
2018-07-12 18:15:33 +02:00
Mathias Kresin
cf7154db07 kernel: only optimized for size if small_flash
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>
2018-07-12 18:15:32 +02:00
Jeremiah McConnell
206fbbfec2 config: add config option for KERNEL_TASKSTATS
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>
2018-07-07 18:33:57 +02:00
Hauke Mehrtens
fc166931fa config: fix ARM64 dependency check
The ARM64 CPUs use aarch64 config symbol, fix the depends lines.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2018-02-10 20:16:39 +01:00
Yousong Zhou
d76ad1dc79 lantiq: ase: turn off fpu emulator in default build
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>
2018-01-29 17:34:48 +08:00
Yousong Zhou
82ceb2ad2a build: add config option KERNEL_MIPS_FPU_EMULATOR
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>
2018-01-29 15:06:53 +08:00
Matthias Schiffer
ef27f15330
kernel: allow disabling multicast routing support
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>
2018-01-11 11:51:24 +01:00
Sascha Paunovic
d810a2aebf kernel: fix spelling in CONFIG_DEVTMPFS help text
Change "ti" to "to", as that's the correct spelling.

Signed-off-by: Sascha Paunovic <azarus@posteo.net>
2017-12-11 12:43:29 +01:00
Florian Fainelli
90336ef4cd kernel: Make KERNEL_PERF_EVENTS selectable
The kernel itself allows enabling/disabling CONFIG_PERF_EVENTS, so allow
doing the same thing.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-05-26 15:42:25 -07:00
Daniel Golle
48d71ab502 kernel: enable CRASH_DUMP on supported platforms
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>
2017-05-20 00:26:03 +02:00
Felix Fietkau
0b7ed65cec kernel: remove out of tree direct-io disable hack
Direct-IO support has to be enabled for the release build anyway, so
this hack is not worth keeping

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2017-04-26 10:27:45 +02:00
Felix Fietkau
749918911d x86: disable crashlog
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>
2017-01-13 15:15:09 +01:00
Hauke Mehrtens
6e7fdf07b7 kernel: add KERNEL_DEVMEM and KERNEL_DEVKMEM
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>
2016-12-24 14:55:35 +01:00
Hauke Mehrtens
c058f4f22d kernel: add KERNEL_DEBUG_PINCTRL and KERNEL_DEBUG_GPIO
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>
2016-12-10 16:06:34 +01:00
Nathaniel Wesley Filardo
39d817cf38 Add config symbols for kernel keyring support
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>
2016-09-02 14:43:52 +02:00
Daniel Dickinson
b9952797e6 kernel: Move POSIX ACL and attr support options into submenu
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>
2016-07-05 22:59:14 +02:00
Daniel Dickinson
e408abd7fb kernel: Add option to make using filesystem ACL support the default
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>
2016-06-30 22:48:39 +02:00
John Crispin
30acacb0af config: add a small_flash feature
this causes KALLSYMS to be off by default

Signed-off-by: John Crispin <john@phrozen.org>
2016-06-13 22:51:43 +02:00
Daniel Golle
2aa818a0bb kernel: add missing symbol
Add missing symbol When building kernel with profiling enabled and ARM
or ARM64 targets.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2016-05-16 18:00:34 +02:00
Florian Fainelli
312367665a buildroot: add options to build the kernel for NFS boot
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
2016-02-01 01:06:39 +00:00
Felix Fietkau
b3f7902a06 include/kernel: add custom USER/DOMAIN config options
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
2016-01-28 22:42:34 +00:00
Felix Fietkau
33beafa8d8 Configure IPv6 kernel options in config/Config-kernel.in
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
2016-01-04 23:30:36 +00:00
John Crispin
b4564e3163 kernel: add support for KERNEL_CGROUP_PIDS
Signed-off-by: Daniel Golle <daniel@makrotopia.org>

SVN-Revision: 47275
2015-10-26 11:54:56 +00:00
Luka Perkov
75078acd93 cosmetic: remove trailing whitespaces
Signed-off-by: Luka Perkov <luka@openwrt.org>

SVN-Revision: 47197
2015-10-15 22:12:13 +00:00
Felix Fietkau
b3d81b2dec kernel: mitigate cgroups config dependency changes
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
2015-06-18 06:39:00 +00:00
John Crispin
3ec7ccf501 config: add an option to enable KPROBE
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>

SVN-Revision: 45212
2015-04-01 08:33:04 +00:00
John Crispin
006f8c9446 kernel: cleanup seccomp symbol selection
Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 45005
2015-03-26 10:57:51 +00:00
Felix Fietkau
5d9eeab64a build: remove obsolete references to cris and avr32
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 44965
2015-03-24 10:07:40 +00:00
John Crispin
f9f7c80cd2 kernel: Support kernel options required by systemd
These kernel options are all likely to be widely useful in this modern age, but
are immediately useful for systemd support.

c.f. http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/sys-apps/systemd/systemd-9999.ebuild?&view=markup#l118

Adapted from a patch by Adam Porter.

Signed-off-by: Jeff Waugh <jdub@bethesignal.org>

SVN-Revision: 44929
2015-03-21 21:48:12 +00:00
John Crispin
7274db3b5a config: add function tracers
Adds menuconfig options for ftrace function tracers

Signed-off-by: Bryan Forbes <bryan@reigndropsfall.net>

SVN-Revision: 44878
2015-03-18 20:08:21 +00:00
John Crispin
b1953bdf27 kernel: enable open by fhandle syscalls
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
2015-03-15 06:35:13 +00:00
Nicolas Thill
f87f373c9f config: disable kernel tracing on uml
Signed-off-by: Nicolas Thill <nico@openwrt.org>

SVN-Revision: 44397
2015-02-11 11:31:26 +00:00
Rafał Miłecki
757b45a32f config: enable EARLY_PRINTK on bcm53xx by default
It's useful for debugging and safe at the same time as we enable it per
device.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 43980
2015-01-16 14:50:51 +00:00
John Crispin
baad87ae3d kernel: add SECCOMP to menuconfig
Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 43888
2015-01-08 21:23:18 +00:00
Hauke Mehrtens
bdeda10f1c Kconfig: Various typo/grammar/line-length fixes in Config*.in files
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
2014-09-13 20:27:25 +00:00
Luka Perkov
cc82f93251 config: enable cgroup freezer
This option will be enabled by default only when cgroups support is enabled.

Signed-off-by: Luka Perkov <luka@openwrt.org>

SVN-Revision: 42464
2014-09-10 23:15:22 +00:00
Steven Barth
e64f122023 Disable crashlog for UML
SVN-Revision: 41153
2014-06-12 11:34:44 +00:00
Felix Fietkau
43dc78425c kernel: fix duplicate KERNEL_PERF_EVENTS with wrong dependency
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 41030
2014-06-06 09:20:15 +00:00
Felix Fietkau
56702140b6 kernel: add a config option for enabling /proc/slabinfo
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 40858
2014-05-25 22:39:54 +00:00
Felix Fietkau
86ddc3d489 kernel: add a config option for /proc page monitoring (useful for detailed memory usage info)
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 40855
2014-05-25 19:38:55 +00:00
John Crispin
76133009c9 sparse: add as a new package selectable from the config
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
2014-04-12 21:21:49 +00:00
Imre Kaloz
ecbcbeefae make printk, crashlog and swap support configurable
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 40361
2014-04-02 11:40:41 +00:00
Luka Perkov
64f3676a25 config: lxc: enable KERNEL_POSIX_MQUEUE
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
2014-01-24 13:49:39 +00:00
Luka Perkov
ef5e13325e config: add KERNEL_DYNAMIC_DEBUG option
Useful when debugging kernel which uses this infrastructure, for
example ubi/ubifs.

Signed-off-by: Luka Perkov <luka@openwrt.org>

SVN-Revision: 39007
2013-12-09 11:30:16 +00:00
Imre Kaloz
9fa3c68938 move menuconfig options into separate files
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 38895
2013-11-22 14:30:40 +00:00