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https://github.com/cirosantilli/linux-kernel-module-cheat.git
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bc73cebff1
This will allow for other types of root filesystems that don't rely on Buildroot to be added and used in the future. Propagate --verbose on all build scripts to see full GCC commands. build-all: allow for neat subsets also 9p share rootfs_overlay. TODO document.
124 lines
2.9 KiB
Plaintext
124 lines
2.9 KiB
Plaintext
# Misc.
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CONFIG_BLK_DEV_INITRD=y
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CONFIG_DYNAMIC_DEBUG=y
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CONFIG_MODULE_SRCVERSION_ALL=y
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# CONFIG_STRICT_DEVMEM is not set
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# Filesystems.
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CONFIG_DEBUG_FS=y
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CONFIG_OVERLAY_FS=y
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CONFIG_SQUASHFS=y
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# GDB debugging.
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CONFIG_DEBUG_INFO=y
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CONFIG_DEBUG_KERNEL=y
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CONFIG_GDB_SCRIPTS=y
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# KGDB
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CONFIG_CONSOLE_POLL=y
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CONFIG_KDB_CONTINUE_CATASTROPHIC=0
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CONFIG_KDB_DEFAULT_ENABLE=0x1
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CONFIG_KDB_KEYBOARD=y
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CONFIG_KGDB=y
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CONFIG_KGDB_KDB=y
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CONFIG_KGDB_LOW_LEVEL_TRAP=y
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CONFIG_KGDB_SERIAL_CONSOLE=y
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CONFIG_KGDB_TESTS=y
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# CONFIG_KGDB_TESTS_ON_BOOT is not set
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CONFIG_MAGIC_SYSRQ=y
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CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
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# CONFIG_SERIAL_KGDB_NMI is not set
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# Non-static variables show up on /proc/kallsyms
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# https://stackoverflow.com/questions/20196636/does-kallsyms-have-all-the-symbol-of-kernel-functions/44614878#44614878
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CONFIG_KALLSYMS_ALL=y
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# /proc/config.gz
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CONFIG_IKCONFIG=y
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CONFIG_IKCONFIG_PROC=y
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# TODO make example.
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# This seems to allow userspace to create arbitrary configuration trees,
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# which kernel modules can then read and interpret.
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CONFIG_CONFIGFS_FS=y
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# Module.symvers in kernel tree and modules tree contains CRC of signatures.
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# TODO: I think the CRC are stored in the built kernel and module, and checked
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# at insmod, but bgrep did not find it in kernel image.
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# Does not show in /proc/kallyms either.
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CONFIG_MODVERSIONS=y
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# ftrace
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CONFIG_DYNAMIC_FTRACE=y
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CONFIG_FTRACE=y
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CONFIG_FTRACE_SYSCALLS=y
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CONFIG_FUNCTION_GRAPH_TRACER=y
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CONFIG_FUNCTION_PROFILER=y
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CONFIG_FUNCTION_TRACER=y
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CONFIG_HWLAT_TRACER=y
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CONFIG_IRQSOFF_TRACER=y
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CONFIG_SCHED_TRACER=y
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CONFIG_STACK_TRACER=y
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CONFIG_TRACER_SNAPSHOT=y
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# Process tracing.
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CONFIG_CONNECTOR=y
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CONFIG_PROC_EVENTS=y
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# 9P
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CONFIG_9P_FS=y
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CONFIG_9P_FS_POSIX_ACL=y
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CONFIG_9P_FS_SECURITY=y
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CONFIG_NETWORK_FILESYSTEMS=y
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CONFIG_NET_9P=y
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CONFIG_NET_9P_DEBUG=y
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CONFIG_NET_9P_VIRTIO=y
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# 9P needed for ARM. Not fully minimized, but so be it.
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CONFIG_PCI=y
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CONFIG_PCI_HOST_COMMON=y
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CONFIG_PCI_HOST_GENERIC=y
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CONFIG_VIRTIO_PCI=y
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CONFIG_VIRTIO_BLK=y
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# Misc
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CONFIG_DUMMY_IRQ=m
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CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
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# Requirement for LOGO.
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CONFIG_FB=y
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CONFIG_LOGO=y
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## Networking
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# If given, we can use QEMU 2.9.0 default x86 networking without any -net or -netdev options,
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# since E1000 is the default networking device as mentioned at:
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# https://en.wikibooks.org/w/index.php?title=QEMU/Networking&oldid=3268753
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#CONFIG_E1000=y
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## x86
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# https://stackoverflow.com/questions/20069620/print-kernels-page-table-entries
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# cat /sys/kernel/debug/kernel_page_tables
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CONFIG_X86_PTDUMP=y
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## UIO
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# All other UIO depend on this module.
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CONFIG_UIO=m
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# Generic platform devices.
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# https://yurovsky.github.io/2014/10/10/linux-uio-gpio-interrupt/
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CONFIG_UIO_DMEM_GENIRQ=m
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CONFIG_UIO_PDRV_GENIRQ=m
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# https://github.com/rumpkernel/wiki/wiki/Howto:-Accessing-PCI-devices-from-userspace
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# /sys/class/uio/
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# /sys/class/uio/uio0
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CONFIG_UIO_PCI_GENERIC=m
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## ARM
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CONFIG_ARM64_PTDUMP=y
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# For record and replay.
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CONFIG_8139CP=y
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