ba52ae5048
Following legacy packing conventions, `isArm` was defined just for
32-bit ARM instruction set. This is confusing to non packagers though,
because Aarch64 is an ARM instruction set.
The official ARM overview for ARMv8[1] is surprisingly not confusing,
given the overall state of affairs for ARM naming conventions, and
offers us a solution. It divides the nomenclature into three levels:
```
ISA: ARMv8 {-A, -R, -M}
/ \
Mode: Aarch32 Aarch64
| / \
Encoding: A64 A32 T32
```
At the top is the overall v8 instruction set archicture. Second are the
two modes, defined by bitwidth but differing in other semantics too, and
buttom are the encodings, (hopefully?) isomorphic if they encode the
same mode.
The 32 bit encodings are mostly backwards compatible with previous
non-Thumb and Thumb encodings, and if so we can pun the mode names to
instead mean "sets of compatable or isomorphic encodings", and then
voilà we have nice names for 32-bit and 64-bit arm instruction sets
which do not use the word ARM so as to not confused either laymen or
experienced ARM packages.
[1]: https://developer.arm.com/products/architecture/a-profile
713 lines
18 KiB
Nix
713 lines
18 KiB
Nix
/*
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WARNING/NOTE: whenever you want to add an option here you need to
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either
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* mark it as an optional one with `?` suffix,
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* or make sure it works for all the versions in nixpkgs,
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* or check for which kernel versions it will work (using kernel
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changelog, google or whatever) and mark it with `versionOlder` or
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`versionAtLeast`.
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Then do test your change by building all the kernels (or at least
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their configs) in Nixpkgs or else you will guarantee lots and lots
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of pain to users trying to switch to an older kernel because of some
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hardware problems with a new one.
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*/
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{ stdenv, version, extraConfig, features }:
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with stdenv.lib;
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''
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# Compress kernel modules for a sizable disk space savings.
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${optionalString (versionAtLeast version "3.18") ''
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MODULE_COMPRESS y
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MODULE_COMPRESS_XZ y
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''}
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KERNEL_XZ y
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# Debugging.
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DEBUG_KERNEL y
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DYNAMIC_DEBUG y
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DEBUG_DEVRES n
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DEBUG_STACK_USAGE n
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DEBUG_STACKOVERFLOW n
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SCHEDSTATS n
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DETECT_HUNG_TASK y
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DEBUG_INFO n # Not until we implement a separate debug output
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${optionalString (versionOlder version "4.4") ''
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CPU_NOTIFIER_ERROR_INJECT? n
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''}
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${optionalString (versionOlder version "4.11") ''
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TIMER_STATS y
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DEBUG_NX_TEST n
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''}
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# Bump the maximum number of CPUs to support systems like EC2 x1.*
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# instances and Xeon Phi.
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${optionalString (stdenv.hostPlatform.system == "x86_64-linux" || stdenv.hostPlatform.system == "aarch64-linux") ''
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NR_CPUS 384
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''}
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# Unix domain sockets.
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UNIX y
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# Power management.
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${optionalString (versionOlder version "3.19") ''
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PM_RUNTIME y
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''}
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PM_ADVANCED_DEBUG y
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${optionalString (versionAtLeast version "3.11") ''
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X86_INTEL_LPSS y
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''}
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${optionalString (versionAtLeast version "3.10") ''
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X86_INTEL_PSTATE y
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''}
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INTEL_IDLE y
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CPU_FREQ_DEFAULT_GOV_PERFORMANCE y
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${optionalString (versionOlder version "3.10") ''
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USB_SUSPEND y
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''}
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PM_WAKELOCKS y
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# Support drivers that need external firmware.
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STANDALONE n
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# Make /proc/config.gz available.
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IKCONFIG y
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IKCONFIG_PROC y
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# Optimize with -O2, not -Os.
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CC_OPTIMIZE_FOR_SIZE n
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# Enable the kernel's built-in memory tester.
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MEMTEST y
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# Include the CFQ I/O scheduler in the kernel, rather than as a
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# module, so that the initrd gets a good I/O scheduler.
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IOSCHED_CFQ y
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BLK_CGROUP y # required by CFQ
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IOSCHED_DEADLINE y
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${optionalString (versionAtLeast version "4.11") ''
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MQ_IOSCHED_DEADLINE y
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''}
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${optionalString (versionAtLeast version "4.12") ''
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BFQ_GROUP_IOSCHED y
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MQ_IOSCHED_KYBER y
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IOSCHED_BFQ m
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''}
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# Enable NUMA.
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NUMA? y
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# Disable some expensive (?) features.
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PM_TRACE_RTC n
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# Enable initrd support.
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BLK_DEV_RAM y
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BLK_DEV_INITRD y
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# Enable various subsystems.
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ACCESSIBILITY y # Accessibility support
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AUXDISPLAY y # Auxiliary Display support
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HIPPI y
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MTD_COMPLEX_MAPPINGS y # needed for many devices
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SCSI_LOWLEVEL y # enable lots of SCSI devices
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SCSI_LOWLEVEL_PCMCIA y
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SCSI_SAS_ATA y # added to enable detection of hard drive
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SPI y # needed for many devices
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SPI_MASTER y
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WAN y
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${optionalString (versionOlder version "4.17") ''
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DONGLE y # Serial dongle support
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''}
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# Networking options.
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NET y
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IP_PNP n
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${optionalString (versionOlder version "3.13") ''
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IPV6_PRIVACY y
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''}
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NETFILTER y
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NETFILTER_ADVANCED y
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CGROUP_BPF? y # Required by systemd per-cgroup firewalling
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CGROUP_NET_PRIO y # Required by systemd
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IP_ROUTE_VERBOSE y
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IP_MROUTE_MULTIPLE_TABLES y
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IP_VS_PROTO_TCP y
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IP_VS_PROTO_UDP y
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IP_VS_PROTO_ESP y
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IP_VS_PROTO_AH y
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IP_DCCP_CCID3 n # experimental
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IP_MULTICAST y
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IPV6_ROUTER_PREF y
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IPV6_ROUTE_INFO y
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IPV6_OPTIMISTIC_DAD y
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IPV6_MULTIPLE_TABLES y
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IPV6_SUBTREES y
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IPV6_MROUTE y
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IPV6_MROUTE_MULTIPLE_TABLES y
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IPV6_PIMSM_V2 y
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${optionalString (versionAtLeast version "4.7") ''
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IPV6_FOU_TUNNEL m
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''}
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CLS_U32_PERF y
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CLS_U32_MARK y
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${optionalString (stdenv.system == "x86_64-linux") ''
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BPF_JIT y
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''}
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${optionalString (versionAtLeast version "4.4") ''
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NET_CLS_BPF m
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NET_ACT_BPF m
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''}
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L2TP_V3 y
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L2TP_IP m
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L2TP_ETH m
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BRIDGE_VLAN_FILTERING y
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BONDING m
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NET_L3_MASTER_DEV? y
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NET_FOU_IP_TUNNELS? y
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IP_NF_TARGET_REDIRECT m
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# Wireless networking.
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CFG80211_WEXT? y # Without it, ipw2200 drivers don't build
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IPW2100_MONITOR? y # support promiscuous mode
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IPW2200_MONITOR? y # support promiscuous mode
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HOSTAP_FIRMWARE? y # Support downloading firmware images with Host AP driver
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HOSTAP_FIRMWARE_NVRAM? y
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ATH9K_PCI? y # Detect Atheros AR9xxx cards on PCI(e) bus
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ATH9K_AHB? y # Ditto, AHB bus
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B43_PHY_HT? y
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BCMA_HOST_PCI? y
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# Enable various FB devices.
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FB y
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FB_EFI y
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FB_NVIDIA_I2C y # Enable DDC Support
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FB_RIVA_I2C y
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FB_ATY_CT y # Mach64 CT/VT/GT/LT (incl. 3D RAGE) support
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FB_ATY_GX y # Mach64 GX support
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FB_SAVAGE_I2C y
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FB_SAVAGE_ACCEL y
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FB_SIS_300 y
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FB_SIS_315 y
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FB_3DFX_ACCEL y
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FB_VESA y
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FRAMEBUFFER_CONSOLE y
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FRAMEBUFFER_CONSOLE_ROTATION y
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${optionalString (stdenv.system == "i686-linux") ''
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FB_GEODE y
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''}
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# Video configuration.
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# Enable KMS for devices whose X.org driver supports it.
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${optionalString (versionOlder version "4.3") ''
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DRM_I915_KMS y
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''}
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# Allow specifying custom EDID on the kernel command line
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DRM_LOAD_EDID_FIRMWARE y
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VGA_SWITCHEROO y # Hybrid graphics support
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DRM_GMA600 y
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DRM_GMA3600 y
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${optionalString (versionAtLeast version "4.5" && (versionOlder version "4.9")) ''
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DRM_AMD_POWERPLAY y # necessary for amdgpu polaris support
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''}
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${optionalString (versionAtLeast version "4.9") ''
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DRM_AMDGPU_SI y # (experimental) amdgpu support for verde and newer chipsets
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DRM_AMDGPU_CIK y # (stable) amdgpu support for bonaire and newer chipsets
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''}
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# Sound.
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SND_DYNAMIC_MINORS y
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SND_AC97_POWER_SAVE y # AC97 Power-Saving Mode
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SND_HDA_INPUT_BEEP y # Support digital beep via input layer
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SND_HDA_RECONFIG y # Support reconfiguration of jack functions
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SND_HDA_PATCH_LOADER y # Support configuring jack functions via fw mechanism at boot
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SND_USB_CAIAQ_INPUT y
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${optionalString (versionOlder version "4.12") ''
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PSS_MIXER y # Enable PSS mixer (Beethoven ADSP-16 and other compatible)
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''}
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# USB serial devices.
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USB_SERIAL_GENERIC y # USB Generic Serial Driver
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# Include firmware for various USB serial devices.
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# Only applicable for kernels below 4.16, after that no firmware is shipped in the kernel tree.
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${optionalString (versionOlder version "4.16") ''
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USB_SERIAL_KEYSPAN_MPR y
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USB_SERIAL_KEYSPAN_USA28 y
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USB_SERIAL_KEYSPAN_USA28X y
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USB_SERIAL_KEYSPAN_USA28XA y
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USB_SERIAL_KEYSPAN_USA28XB y
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USB_SERIAL_KEYSPAN_USA19 y
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USB_SERIAL_KEYSPAN_USA18X y
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USB_SERIAL_KEYSPAN_USA19W y
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USB_SERIAL_KEYSPAN_USA19QW y
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USB_SERIAL_KEYSPAN_USA19QI y
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USB_SERIAL_KEYSPAN_USA49W y
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USB_SERIAL_KEYSPAN_USA49WLC y
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''}
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# Device mapper (RAID, LVM, etc.)
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MD y
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# Filesystem options - in particular, enable extended attributes and
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# ACLs for all filesystems that support them.
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FANOTIFY y
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TMPFS y
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TMPFS_POSIX_ACL y
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${optionalString (versionAtLeast version "4.9") ''
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FS_ENCRYPTION? m
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''}
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EXT2_FS_XATTR y
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EXT2_FS_POSIX_ACL y
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EXT2_FS_SECURITY y
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${optionalString (versionOlder version "4.0") ''
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EXT2_FS_XIP y # Ext2 execute in place support
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''}
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EXT3_FS_POSIX_ACL y
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EXT3_FS_SECURITY y
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EXT4_FS_POSIX_ACL y
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EXT4_ENCRYPTION? ${if versionOlder version "4.8" then "m" else "y"}
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EXT4_FS_SECURITY y
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REISERFS_FS_XATTR? y
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REISERFS_FS_POSIX_ACL? y
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REISERFS_FS_SECURITY? y
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JFS_POSIX_ACL? y
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JFS_SECURITY? y
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XFS_QUOTA? y
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XFS_POSIX_ACL? y
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XFS_RT? y # XFS Realtime subvolume support
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OCFS2_DEBUG_MASKLOG? n
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BTRFS_FS_POSIX_ACL y
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UBIFS_FS_ADVANCED_COMPR? y
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F2FS_FS m
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F2FS_FS_SECURITY? y
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F2FS_FS_ENCRYPTION? y
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UDF_FS m
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${optionalString (versionAtLeast version "4.0" && versionOlder version "4.6") ''
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NFSD_PNFS y
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''}
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NFSD_V2_ACL y
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NFSD_V3 y
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NFSD_V3_ACL y
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NFSD_V4 y
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${optionalString (versionAtLeast version "3.11") ''
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NFSD_V4_SECURITY_LABEL y
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''}
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NFS_FSCACHE y
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NFS_SWAP y
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NFS_V3_ACL y
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${optionalString (versionAtLeast version "3.11") ''
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NFS_V4_1 y # NFSv4.1 client support
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NFS_V4_2 y
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NFS_V4_SECURITY_LABEL y
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''}
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CIFS_XATTR y
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CIFS_POSIX y
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CIFS_FSCACHE y
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CIFS_STATS y
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CIFS_WEAK_PW_HASH y
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CIFS_UPCALL y
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CIFS_ACL y
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CIFS_DFS_UPCALL y
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${optionalString (versionOlder version "4.13") ''
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CIFS_SMB2 y
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''}
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${optionalString (versionAtLeast version "3.12") ''
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CEPH_FSCACHE y
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''}
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${optionalString (versionAtLeast version "3.14") ''
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CEPH_FS_POSIX_ACL y
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''}
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${optionalString (versionAtLeast version "3.13") ''
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SQUASHFS_FILE_DIRECT y
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SQUASHFS_DECOMP_MULTI_PERCPU y
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''}
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SQUASHFS_XATTR y
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SQUASHFS_ZLIB y
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SQUASHFS_LZO y
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SQUASHFS_XZ y
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${optionalString (versionAtLeast version "3.19") ''
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SQUASHFS_LZ4 y
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''}
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# Native Language Support modules, needed by some filesystems
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NLS y
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NLS_DEFAULT utf8
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NLS_UTF8 m
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NLS_CODEPAGE_437 m # VFAT default for the codepage= mount option
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NLS_ISO8859_1 m # VFAT default for the iocharset= mount option
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# Runtime security tests
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${optionalString (versionOlder version "4.11") ''
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DEBUG_SET_MODULE_RONX? y # Detect writes to read-only module pages
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''}
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# Security related features.
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RANDOMIZE_BASE? y
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STRICT_DEVMEM? y # Filter access to /dev/mem
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SECURITY_SELINUX_BOOTPARAM_VALUE 0 # Disable SELinux by default
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SECURITY_YAMA? y # Prevent processes from ptracing non-children processes
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DEVKMEM n # Disable /dev/kmem
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${optionalString (! stdenv.hostPlatform.isAarch32)
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(if versionOlder version "3.14" then ''
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CC_STACKPROTECTOR? y # Detect buffer overflows on the stack
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'' else ''
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CC_STACKPROTECTOR_REGULAR? y
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'')}
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${optionalString (versionAtLeast version "3.12") ''
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USER_NS y # Support for user namespaces
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''}
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# AppArmor support
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SECURITY_APPARMOR y
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DEFAULT_SECURITY_APPARMOR y
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# Microcode loading support
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MICROCODE y
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MICROCODE_INTEL y
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MICROCODE_AMD y
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${optionalString (versionAtLeast version "3.11" && versionOlder version "4.4") ''
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MICROCODE_EARLY y
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MICROCODE_INTEL_EARLY y
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MICROCODE_AMD_EARLY y
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''}
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${optionalString (versionAtLeast version "4.10") ''
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# Write Back Throttling
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# https://lwn.net/Articles/682582/
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# https://bugzilla.kernel.org/show_bug.cgi?id=12309#c655
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BLK_WBT y
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BLK_WBT_SQ y
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BLK_WBT_MQ y
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''}
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|
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# Misc. options.
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8139TOO_8129 y
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8139TOO_PIO n # PIO is slower
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AIC79XX_DEBUG_ENABLE n
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AIC7XXX_DEBUG_ENABLE n
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|
AIC94XX_DEBUG n
|
|
${optionalString (versionAtLeast version "3.3" && versionOlder version "3.13") ''
|
|
AUDIT_LOGINUID_IMMUTABLE y
|
|
''}
|
|
${optionalString (versionOlder version "4.4") ''
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|
B43_PCMCIA? y
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|
''}
|
|
BLK_DEV_INITRD y
|
|
BLK_DEV_INTEGRITY y
|
|
BSD_PROCESS_ACCT_V3 y
|
|
BT_HCIUART_BCSP? y
|
|
BT_HCIUART_H4? y # UART (H4) protocol support
|
|
BT_HCIUART_LL? y
|
|
BT_RFCOMM_TTY? y # RFCOMM TTY support
|
|
CLEANCACHE? y
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|
CRASH_DUMP? n
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|
DVB_DYNAMIC_MINORS? y # we use udev
|
|
EFI_STUB y # EFI bootloader in the bzImage itself
|
|
CGROUPS y # used by systemd
|
|
FHANDLE y # used by systemd
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|
SECCOMP y # used by systemd >= 231
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SECCOMP_FILTER y # ditto
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|
POSIX_MQUEUE y
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|
FRONTSWAP y
|
|
FUSION y # Fusion MPT device support
|
|
IDE n # deprecated IDE support
|
|
${optionalString (versionAtLeast version "4.3") ''
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IDLE_PAGE_TRACKING y
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|
''}
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|
${optionalString (versionOlder version "4.17") ''
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|
IRDA_ULTRA y # Ultra (connectionless) protocol
|
|
''}
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|
JOYSTICK_IFORCE_232? y # I-Force Serial joysticks and wheels
|
|
JOYSTICK_IFORCE_USB? y # I-Force USB joysticks and wheels
|
|
JOYSTICK_XPAD_FF? y # X-Box gamepad rumble support
|
|
JOYSTICK_XPAD_LEDS? y # LED Support for Xbox360 controller 'BigX' LED
|
|
KEXEC_FILE? y
|
|
KEXEC_JUMP? y
|
|
LDM_PARTITION y # Windows Logical Disk Manager (Dynamic Disk) support
|
|
LOGIRUMBLEPAD2_FF y # Logitech Rumblepad 2 force feedback
|
|
LOGO n # not needed
|
|
MEDIA_ATTACH y
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|
MEGARAID_NEWGEN y
|
|
${optionalString (versionAtLeast version "3.15" && versionOlder version "4.8") ''
|
|
MLX4_EN_VXLAN y
|
|
''}
|
|
${optionalString (versionOlder version "4.9") ''
|
|
MODVERSIONS y
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|
''}
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|
MOUSE_PS2_ELANTECH y # Elantech PS/2 protocol extension
|
|
MTRR_SANITIZER y
|
|
NET_FC y # Fibre Channel driver support
|
|
${optionalString (versionAtLeast version "3.11") ''
|
|
PINCTRL_BAYTRAIL y # GPIO on Intel Bay Trail, for some Chromebook internal eMMC disks
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''}
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|
MMC_BLOCK_MINORS 32 # 8 is default. Modern gpt tables on eMMC may go far beyond 8.
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PPP_MULTILINK y # PPP multilink support
|
|
PPP_FILTER y
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REGULATOR y # Voltage and Current Regulator Support
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|
RC_DEVICES? y # Enable IR devices
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RT2800USB_RT55XX y
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SCHED_AUTOGROUP y
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CFS_BANDWIDTH y
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SCSI_LOGGING y # SCSI logging facility
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SERIAL_8250 y # 8250/16550 and compatible serial support
|
|
SLIP_COMPRESSED y # CSLIP compressed headers
|
|
SLIP_SMART y
|
|
HWMON y
|
|
THERMAL_HWMON y # Hardware monitoring support
|
|
${optionalString (versionAtLeast version "3.15") ''
|
|
UEVENT_HELPER n
|
|
''}
|
|
${optionalString (versionOlder version "3.15") ''
|
|
USB_DEBUG? n
|
|
''}
|
|
USB_EHCI_ROOT_HUB_TT y # Root Hub Transaction Translators
|
|
USB_EHCI_TT_NEWSCHED y # Improved transaction translator scheduling
|
|
${optionalString (versionAtLeast version "4.3") ''
|
|
USERFAULTFD y
|
|
''}
|
|
X86_CHECK_BIOS_CORRUPTION y
|
|
X86_MCE y
|
|
|
|
${optionalString (versionAtLeast version "3.12") ''
|
|
HOTPLUG_PCI_ACPI y # PCI hotplug using ACPI
|
|
HOTPLUG_PCI_PCIE y # PCI-Expresscard hotplug support
|
|
''}
|
|
|
|
|
|
# Linux containers.
|
|
NAMESPACES? y # Required by 'unshare' used by 'nixos-install'
|
|
RT_GROUP_SCHED n
|
|
CGROUP_DEVICE? y
|
|
MEMCG y
|
|
MEMCG_SWAP y
|
|
${optionalString (versionOlder version "4.7") "DEVPTS_MULTIPLE_INSTANCES y"}
|
|
BLK_DEV_THROTTLING y
|
|
CFQ_GROUP_IOSCHED y
|
|
${optionalString (versionAtLeast version "4.3") ''
|
|
CGROUP_PIDS y
|
|
''}
|
|
|
|
# Enable staging drivers. These are somewhat experimental, but
|
|
# they generally don't hurt.
|
|
STAGING y
|
|
|
|
# PROC_EVENTS requires that the netlink connector is not built
|
|
# as a module. This is required by libcgroup's cgrulesengd.
|
|
CONNECTOR y
|
|
PROC_EVENTS y
|
|
|
|
# Tracing.
|
|
FTRACE y
|
|
KPROBES y
|
|
FUNCTION_TRACER y
|
|
FTRACE_SYSCALLS y
|
|
SCHED_TRACER y
|
|
STACK_TRACER y
|
|
|
|
${if versionOlder version "4.11" then ''
|
|
UPROBE_EVENT? y
|
|
'' else ''
|
|
UPROBE_EVENTS? y
|
|
''}
|
|
|
|
${optionalString (versionAtLeast version "4.4") ''
|
|
BPF_SYSCALL y
|
|
BPF_EVENTS y
|
|
''}
|
|
FUNCTION_PROFILER y
|
|
RING_BUFFER_BENCHMARK n
|
|
|
|
# Devtmpfs support.
|
|
DEVTMPFS y
|
|
|
|
# Easier debugging of NFS issues.
|
|
SUNRPC_DEBUG y
|
|
|
|
# Virtualisation.
|
|
PARAVIRT? y
|
|
HYPERVISOR_GUEST y
|
|
PARAVIRT_SPINLOCKS? y
|
|
${optionalString (versionOlder version "4.8") ''
|
|
KVM_APIC_ARCHITECTURE y
|
|
''}
|
|
KVM_ASYNC_PF y
|
|
${optionalString ((versionAtLeast version "4.0") && (versionOlder version "4.12")) ''
|
|
KVM_COMPAT? y
|
|
''}
|
|
${optionalString (versionOlder version "4.12") ''
|
|
KVM_DEVICE_ASSIGNMENT? y
|
|
''}
|
|
${optionalString (versionAtLeast version "4.0") ''
|
|
KVM_GENERIC_DIRTYLOG_READ_PROTECT y
|
|
''}
|
|
KVM_GUEST y
|
|
KVM_MMIO y
|
|
${optionalString (versionAtLeast version "3.13") ''
|
|
KVM_VFIO y
|
|
''}
|
|
${optionalString (stdenv.isx86_64 || stdenv.isi686) ''
|
|
XEN? y
|
|
XEN_DOM0? y
|
|
${optionalString ((versionAtLeast version "3.18") && (features.xen_dom0 or false)) ''
|
|
PCI_XEN? y
|
|
HVC_XEN? y
|
|
HVC_XEN_FRONTEND? y
|
|
XEN_SYS_HYPERVISOR? y
|
|
SWIOTLB_XEN? y
|
|
XEN_BACKEND? y
|
|
XEN_BALLOON? y
|
|
XEN_BALLOON_MEMORY_HOTPLUG? y
|
|
XEN_EFI? y
|
|
XEN_HAVE_PVMMU? y
|
|
XEN_MCE_LOG? y
|
|
XEN_PVH? y
|
|
XEN_PVHVM? y
|
|
XEN_SAVE_RESTORE? y
|
|
XEN_SCRUB_PAGES? y
|
|
XEN_SELFBALLOONING? y
|
|
XEN_STUB? y
|
|
XEN_TMEM? y
|
|
''}
|
|
''}
|
|
KSM y
|
|
${optionalString (!stdenv.is64bit) ''
|
|
HIGHMEM64G? y # We need 64 GB (PAE) support for Xen guest support.
|
|
''}
|
|
${optionalString (stdenv.is64bit) ''
|
|
VFIO_PCI_VGA y
|
|
''}
|
|
VIRT_DRIVERS y
|
|
|
|
# Media support.
|
|
MEDIA_DIGITAL_TV_SUPPORT y
|
|
MEDIA_CAMERA_SUPPORT y
|
|
${optionalString (versionOlder version "4.14") ''
|
|
MEDIA_RC_SUPPORT y
|
|
''}
|
|
MEDIA_CONTROLLER y
|
|
MEDIA_USB_SUPPORT y
|
|
MEDIA_PCI_SUPPORT y
|
|
MEDIA_ANALOG_TV_SUPPORT y
|
|
VIDEO_STK1160_COMMON m
|
|
${optionalString (versionOlder version "4.11") ''
|
|
VIDEO_STK1160_AC97 y
|
|
''}
|
|
|
|
# Our initrd init uses shebang scripts, so can't be modular.
|
|
BINFMT_SCRIPT y
|
|
|
|
# For systemd-binfmt
|
|
BINFMT_MISC? y
|
|
|
|
# Enable the 9P cache to speed up NixOS VM tests.
|
|
9P_FSCACHE? y
|
|
9P_FS_POSIX_ACL? y
|
|
|
|
# Enable transparent support for huge pages.
|
|
TRANSPARENT_HUGEPAGE? y
|
|
TRANSPARENT_HUGEPAGE_ALWAYS? n
|
|
TRANSPARENT_HUGEPAGE_MADVISE? y
|
|
|
|
# zram support (e.g for in-memory compressed swap).
|
|
ZRAM m
|
|
ZSWAP? y
|
|
ZBUD? y
|
|
${optionalString (versionOlder version "3.18") ''
|
|
ZSMALLOC y
|
|
''}
|
|
${optionalString (versionAtLeast version "3.18") ''
|
|
ZSMALLOC m
|
|
''}
|
|
|
|
# Enable PCIe and USB for the brcmfmac driver
|
|
BRCMFMAC_USB? y
|
|
BRCMFMAC_PCIE? y
|
|
|
|
# Support x2APIC (which requires IRQ remapping).
|
|
${optionalString (stdenv.system == "x86_64-linux") ''
|
|
X86_X2APIC y
|
|
IRQ_REMAP y
|
|
''}
|
|
|
|
# Disable the firmware helper fallback, udev doesn't implement it any more
|
|
FW_LOADER_USER_HELPER_FALLBACK? n
|
|
|
|
# Disable various self-test modules that have no use in a production system
|
|
# This menu disables all/most of them on >= 4.16
|
|
RUNTIME_TESTING_MENU? n
|
|
# For older kernels, painstakingly disable each symbol.
|
|
${optionalString (versionOlder version "4.16") ''
|
|
ARM_KPROBES_TEST? n
|
|
ASYNC_RAID6_TEST? n
|
|
ATOMIC64_SELFTEST? n
|
|
BACKTRACE_SELF_TEST? n
|
|
INTERVAL_TREE_TEST? n
|
|
PERCPU_TEST? n
|
|
RBTREE_TEST? n
|
|
TEST_BITMAP? n
|
|
TEST_BPF? n
|
|
TEST_FIRMWARE? n
|
|
TEST_HASH? n
|
|
TEST_HEXDUMP? n
|
|
TEST_KMOD? n
|
|
TEST_KSTRTOX? n
|
|
TEST_LIST_SORT? n
|
|
TEST_LKM? n
|
|
TEST_PARMAN? n
|
|
TEST_PRINTF? n
|
|
TEST_RHASHTABLE? n
|
|
TEST_SORT? n
|
|
TEST_STATIC_KEYS? n
|
|
TEST_STRING_HELPERS? n
|
|
TEST_UDELAY? n
|
|
TEST_USER_COPY? n
|
|
TEST_UUID? n
|
|
''}
|
|
|
|
CRC32_SELFTEST? n
|
|
CRYPTO_TEST? n
|
|
DRM_DEBUG_MM_SELFTEST? n
|
|
EFI_TEST? n
|
|
GLOB_SELFTEST? n
|
|
LNET_SELFTEST? n
|
|
LOCK_TORTURE_TEST? n
|
|
MTD_TESTS? n
|
|
NOTIFIER_ERROR_INJECTION? n
|
|
RCU_PERF_TEST? n
|
|
RCU_TORTURE_TEST? n
|
|
TEST_ASYNC_DRIVER_PROBE? n
|
|
WW_MUTEX_SELFTEST? n
|
|
XZ_DEC_TEST? n
|
|
|
|
${optionalString (features.criu or false) ''
|
|
EXPERT y
|
|
CHECKPOINT_RESTORE y
|
|
''}
|
|
|
|
${optionalString ((features.criu or false) && (features.criu_revert_expert or true))
|
|
# Revert some changes, introduced by EXPERT, when necessary for criu
|
|
''
|
|
RFKILL_INPUT? y
|
|
HID_PICOLCD_FB? y
|
|
HID_PICOLCD_BACKLIGHT? y
|
|
HID_PICOLCD_LCD? y
|
|
HID_PICOLCD_LEDS? y
|
|
HID_PICOLCD_CIR? y
|
|
DEBUG_MEMORY_INIT? y
|
|
''}
|
|
|
|
${optionalString (features.debug or false) ''
|
|
DEBUG_INFO y
|
|
''}
|
|
|
|
${extraConfig}
|
|
''
|