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* x86: make crashdump worksChen Minqiang2020-03-201-0/+4
| | | | | | | | | | | | | | | 1. KERNEL_CRASH_DUMP should depends on KERNEL_PROC_KCORE (kexec use it) 2. select crashkernel mem size by totalmem mem <= 256M disable crashkernel by default mem >= 4G use 256M for crashkernel mem >= 8G use 512M for crashkernel default use 128M 3. set BOOT_IMAGE in kdump.init 4. resolve a "Unhandled rela relocation: R_X86_64_PLT32" error Tested on x86_64 Signed-off-by: Chen Minqiang <ptpt52@gmail.com>
* kernel: Use new symbol to deactivate MIPS FPU supportHauke Mehrtens2020-02-281-0/+5
| | | | | | | | | | | With kernel 5.4 the upstream kernel supports deactivating the FPU support on MIPS. Use this new upstream feature instead of our older patch which was removed when porting the kernel patches to kernel 5.4. This way both options are set which should work for older kernel versions and also new ones. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
* build: Add additional kernel debug optionsHauke Mehrtens2020-02-221-0/+68
| | | | | | | | Make it possible to activate some additional kernel debug options. This can be used to debug some problems in kernel drivers. Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com> Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
* build: Add KCOV kernel code coverage for fuzzingHauke Mehrtens2020-02-221-0/+33
| | | | | | | The adds an option to activate KCOV (Code coverage for fuzzing). Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com> Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
* build: Add option KERNEL_KASANHauke Mehrtens2020-02-221-0/+52
| | | | | | | | The kernel kernel address sanitizer is able to detect some memory bugs in the kernel like out of range array accesses. Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com> Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
* build: Add option KERNEL_UBSANHauke Mehrtens2020-02-221-0/+35
| | | | | | | | The kernel Undefined Behavior Sanitizer is able to detect some memory bugs in the kernel like out of range array accesses. Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com> Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
* brcm2708: rename target to bcm27xxAdrian Schmutzler2020-02-141-1/+1
| | | | | | | | | | | | | | | | | This change makes the names of Broadcom targets consistent by using the common notation based on SoC/CPU ID (which is used internally anyway), bcmXXXX instead of brcmXXXX. This is even used for target TITLE in make menuconfig already, only the short target name used brcm so far. Despite, since subtargets range from bcm2708 to bcm2711, it seems appropriate to use bcm27xx instead of bcm2708 (again, as already done for BOARDNAME). This also renames the packages brcm2708-userland and brcm2708-gpu-fw. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
* config: kernel: fix typo in HFSPLUG_FS_POSIX_ACLStijn Tintel2019-11-281-1/+1
| | | | Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
* config: kernel: only enable container features if !SMALL_FLASHDaniel Golle2019-09-121-2/+2
| | | | | | | | | | | | KERNEL_DEVPTS_MULTIPLE_INSTANCES and KERNEL_POSIX_MQUEUE were previously enabled by default only if KERNEL_LXC_MISC was selected. KERNEL_LXC_MISC was enabled only if the SMALL_FLASH (anti-)feature was not selected. Now that KERNEL_LXC_MISC no longer exists, make sure that those options are also only enabled by default for !SMALL_FLASH targets. Fixes: 4f94a331 ("config: kernel: remove KERNEL_LXC_MISC") Signed-off-by: Daniel Golle <daniel@makrotopia.org>
* config: kernel: remove KERNEL_LXC_MISCYousong Zhou2019-09-121-33/+22
| | | | | | | | | | Kernel features are neutral. The two cascaded features can also be useful for other container related tools It's also less error-prone if only kconfig symbols from the kernel are prefixed KERNEL_ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
* config: kernel: add KERNEL_X86_VSYSCALL_EMULATIONYousong Zhou2019-09-121-0/+18
| | | | | | | | | Binaries in container images may need this. E.g. nginx:1.7.9 used in k8s default deployment manifest file for demostration [1] [1] https://kubernetes.io/docs/concepts/workloads/controllers/deployment/#creating-a-deployment Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
* Make linux kernel builds reproducible when BUILDBOT selectedAlexander Couzens2019-07-021-0/+2
| | | | | | | | | | | The linux kernel is not reproducible because the build user and domain is included into the kernel. Set the build user to `builder` and build domain to buildhost. It's also possible to build reproducible builds by setting KERNEL_BUILD_USER KERNEL_BUILD_DOMAIN to static values. Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
* config: enable some useful features on !SMALL_FLASH devicesDaniel Golle2019-06-121-16/+16
| | | | | | | | | | enable kernel features needed for procd-ujail, procd-seccomp, lxc and more on devices with big enough flash. Those packages are currently useless in binary builds due to missing kernel features. Enable the features on devices which can bare with the extra space consumption. Signed-off-by: Daniel Golle <daniel@makrotopia.org>
* config: kernel: Add KPROBE_EVENTS config optionPetr Štetiar2019-05-051-0/+4
| | | | | | | | | | | | | | | | | | | | | | | Upstream has renamed KPROBE_EVENT to KPROBE_EVENTS in the following commit: commit 6b0b7551428e4caae1e2c023a529465a9a9ae2d4 Author: Anton Blanchard <anton@samba.org> Date: Thu Feb 16 17:00:50 2017 +1100 perf/core: Rename CONFIG_[UK]PROBE_EVENT to CONFIG_[UK]PROBE_EVENTS We have uses of CONFIG_UPROBE_EVENT and CONFIG_KPROBE_EVENT as well as CONFIG_UPROBE_EVENTS and CONFIG_KPROBE_EVENTS. Consistently use the plurals. So I'm adding this plural option in order to make kconfig happy and stop asking about it if kernel is compiled with verbose logging: Enable kprobes-based dynamic events (KPROBE_EVENTS) [Y/n/?] (NEW) Signed-off-by: Petr Štetiar <ynezz@true.cz>
* config: kernel: Fix missing symbol on brcm2708 with CGROUPSDaniel F. Dickinson2019-02-171-0/+14
| | | | | | | | | | | | | | When CGROUP block io is enabled a new symbol is exposed and needs to be set or unset else kernel oldconfig hangs waiting for input during normal OpenWrt builds. Therefore add sane defaults for this symbol in that case. Also, the defaults brcm2708 are different than generic defaults because the platform's defconfig enables BLK_DEV_THROTTLING by default (in defconfig config from the patches used to match upstream's kernel, not in OpenWrt config-4.xx). Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com> [make KERNEL_BLK_DEV_THROTTLING_LOW depend on KERNEL_BLK_DEV_THROTTLING] Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
* config: extend small_flash featureAlex Maclean2018-07-121-3/+8
| | | | | | | | | | 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>
* kernel: only optimized for size if small_flashMathias Kresin2018-07-121-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | 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>
* config: add config option for KERNEL_TASKSTATSJeremiah McConnell2018-07-071-0/+21
| | | | | | | | | | 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>
* config: fix ARM64 dependency checkHauke Mehrtens2018-02-101-2/+2
| | | | | | The ARM64 CPUs use aarch64 config symbol, fix the depends lines. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
* lantiq: ase: turn off fpu emulator in default buildYousong Zhou2018-01-291-1/+1
| | | | | | | | | | 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>
* build: add config option KERNEL_MIPS_FPU_EMULATORYousong Zhou2018-01-291-0/+5
| | | | | | | 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>
* kernel: allow disabling multicast routing supportMatthias Schiffer2018-01-111-1/+16
| | | | | | | | 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>
* kernel: fix spelling in CONFIG_DEVTMPFS help textSascha Paunovic2017-12-111-1/+1
| | | | | | Change "ti" to "to", as that's the correct spelling. Signed-off-by: Sascha Paunovic <azarus@posteo.net>
* kernel: Make KERNEL_PERF_EVENTS selectableFlorian Fainelli2017-05-261-1/+1
| | | | | | | The kernel itself allows enabling/disabling CONFIG_PERF_EVENTS, so allow doing the same thing. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
* kernel: enable CRASH_DUMP on supported platformsDaniel Golle2017-05-201-0/+10
| | | | | | | 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>
* kernel: remove out of tree direct-io disable hackFelix Fietkau2017-04-261-4/+0
| | | | | | | 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>
* x86: disable crashlogFelix Fietkau2017-01-131-1/+1
| | | | | | | | 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>
* kernel: add KERNEL_DEVMEM and KERNEL_DEVKMEMHauke Mehrtens2016-12-241-0/+14
| | | | | | | | | 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>
* kernel: add KERNEL_DEBUG_PINCTRL and KERNEL_DEBUG_GPIOHauke Mehrtens2016-12-101-0/+8
| | | | | | | | 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>
* Add config symbols for kernel keyring supportNathaniel Wesley Filardo2016-09-021-0/+19
| | | | | | | | 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>
* kernel: Move POSIX ACL and attr support options into submenuDaniel Dickinson2016-07-051-72/+75
| | | | | | | 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>
* kernel: Add option to make using filesystem ACL support the defaultDaniel Dickinson2016-06-301-0/+85
| | | | | | | 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>
* config: add a small_flash featureJohn Crispin2016-06-131-1/+1
| | | | | | this causes KALLSYMS to be off by default Signed-off-by: John Crispin <john@phrozen.org>
* kernel: add missing symbolDaniel Golle2016-05-161-0/+6
| | | | | | | Add missing symbol When building kernel with profiling enabled and ARM or ARM64 targets. Signed-off-by: Daniel Golle <daniel@makrotopia.org>
* buildroot: add options to build the kernel for NFS bootFlorian Fainelli2016-02-011-0/+34
| | | | | | | | | 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
* include/kernel: add custom USER/DOMAIN config optionsFelix Fietkau2016-01-281-0/+16
| | | | | | | | | | | | | | | 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
* Configure IPv6 kernel options in config/Config-kernel.inFelix Fietkau2016-01-041-0/+23
| | | | | | | | | | | | | | | | | | | 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 https://github.com/torvalds/linux/commit/5d9efa7ee99eed58388f186c13cf2e2a87e9ceb4 Signed-off-by: Arjen de Korte <arjen+openwrt@de-korte.org> SVN-Revision: 48132
* kernel: add support for KERNEL_CGROUP_PIDSJohn Crispin2015-10-261-0/+7
| | | | | | Signed-off-by: Daniel Golle <daniel@makrotopia.org> SVN-Revision: 47275
* cosmetic: remove trailing whitespacesLuka Perkov2015-10-151-1/+1
| | | | | | Signed-off-by: Luka Perkov <luka@openwrt.org> SVN-Revision: 47197
* kernel: mitigate cgroups config dependency changesFelix Fietkau2015-06-181-1/+1
| | | | | | | | | | | 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
* config: add an option to enable KPROBEJohn Crispin2015-04-011-0/+17
| | | | | | Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org> SVN-Revision: 45212
* kernel: cleanup seccomp symbol selectionJohn Crispin2015-03-261-7/+5
| | | | | | Signed-off-by: John Crispin <blogic@openwrt.org> SVN-Revision: 45005
* build: remove obsolete references to cris and avr32Felix Fietkau2015-03-241-1/+1
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 44965
* kernel: Support kernel options required by systemdJohn Crispin2015-03-211-6/+28
| | | | | | | | | | | | | 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
* config: add function tracersJohn Crispin2015-03-181-0/+20
| | | | | | | | Adds menuconfig options for ftrace function tracers Signed-off-by: Bryan Forbes <bryan@reigndropsfall.net> SVN-Revision: 44878
* kernel: enable open by fhandle syscallsJohn Crispin2015-03-151-0/+6
| | | | | | | | | | | | | | | | | | | | 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
* config: disable kernel tracing on umlNicolas Thill2015-02-111-0/+1
| | | | | | Signed-off-by: Nicolas Thill <nico@openwrt.org> SVN-Revision: 44397
* config: enable EARLY_PRINTK on bcm53xx by defaultRafał Miłecki2015-01-161-0/+1
| | | | | | | | | 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
* kernel: add SECCOMP to menuconfigJohn Crispin2015-01-081-0/+14
| | | | | | Signed-off-by: John Crispin <blogic@openwrt.org> SVN-Revision: 43888
* Kconfig: Various typo/grammar/line-length fixes in Config*.in filesHauke Mehrtens2014-09-131-15/+16
| | | | | | | | | | | | | 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
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