nixpkgs/pkgs/os-specific/linux/kernel/common-config.nix

602 lines
15 KiB
Nix

/*
WARNING/NOTE: whenever you want to add an option here you need to
either
* mark it as an optional one with `?` suffix,
* or make sure it works for all the versions in nixpkgs,
* or check for which kernel versions it will work (using kernel
changelog, google or whatever) and mark it with `versionOlder` or
`versionAtLeast`.
Then do test your change by building all the kernels (or at least
their configs) in Nixpkgs or else you will guarantee lots and lots
of pain to users trying to switch to an older kernel because of some
hardware problems with a new one.
*/
{ stdenv, version, kernelPlatform, extraConfig, features }:
with stdenv.lib;
''
# Compress kernel modules for a sizable disk space savings.
${optionalString (versionAtLeast version "3.18") ''
MODULE_COMPRESS y
MODULE_COMPRESS_XZ y
''}
# Debugging.
DEBUG_KERNEL y
TIMER_STATS y
BACKTRACE_SELF_TEST n
CPU_NOTIFIER_ERROR_INJECT? n
DEBUG_DEVRES n
DEBUG_NX_TEST n
DEBUG_STACK_USAGE n
DEBUG_STACKOVERFLOW n
RCU_TORTURE_TEST n
SCHEDSTATS n
DETECT_HUNG_TASK y
# Bump the maximum number of CPUs to support systems like EC2 x1.*
# instances and Xeon Phi.
${optionalString (stdenv.system == "x86_64-linux") ''
NR_CPUS 384
''}
# Unix domain sockets.
UNIX y
# Power management.
${optionalString (versionOlder version "3.19") ''
PM_RUNTIME y
''}
PM_ADVANCED_DEBUG y
${optionalString (versionAtLeast version "3.11") ''
X86_INTEL_LPSS y
''}
${optionalString (versionAtLeast version "3.10") ''
X86_INTEL_PSTATE y
''}
INTEL_IDLE y
CPU_FREQ_DEFAULT_GOV_PERFORMANCE y
${optionalString (versionOlder version "3.10") ''
USB_SUSPEND y
''}
PM_WAKELOCKS y
# Support drivers that need external firmware.
STANDALONE n
# Make /proc/config.gz available.
IKCONFIG y
IKCONFIG_PROC y
# Optimize with -O2, not -Os.
CC_OPTIMIZE_FOR_SIZE n
# Enable the kernel's built-in memory tester.
MEMTEST y
# Include the CFQ I/O scheduler in the kernel, rather than as a
# module, so that the initrd gets a good I/O scheduler.
IOSCHED_CFQ y
BLK_CGROUP y # required by CFQ
# Enable NUMA.
NUMA? y
# Disable some expensive (?) features.
PM_TRACE_RTC n
# Enable various subsystems.
ACCESSIBILITY y # Accessibility support
AUXDISPLAY y # Auxiliary Display support
DONGLE y # Serial dongle support
HIPPI y
MTD_COMPLEX_MAPPINGS y # needed for many devices
SCSI_LOWLEVEL y # enable lots of SCSI devices
SCSI_LOWLEVEL_PCMCIA y
SCSI_SAS_ATA y # added to enable detection of hard drive
SPI y # needed for many devices
SPI_MASTER y
WAN y
# Networking options.
NET y
IP_PNP n
${optionalString (versionOlder version "3.13") ''
IPV6_PRIVACY y
''}
NETFILTER_ADVANCED y
IP_ROUTE_VERBOSE y
IP_MROUTE_MULTIPLE_TABLES y
IP_VS_PROTO_TCP y
IP_VS_PROTO_UDP y
IP_VS_PROTO_ESP y
IP_VS_PROTO_AH y
IP_DCCP_CCID3 n # experimental
IPV6_ROUTER_PREF y
IPV6_ROUTE_INFO y
IPV6_OPTIMISTIC_DAD y
IPV6_MULTIPLE_TABLES y
IPV6_SUBTREES y
IPV6_MROUTE y
IPV6_MROUTE_MULTIPLE_TABLES y
IPV6_PIMSM_V2 y
CLS_U32_PERF y
CLS_U32_MARK y
${optionalString (stdenv.system == "x86_64-linux") ''
BPF_JIT y
''}
${optionalString (versionAtLeast version "4.4") ''
NET_CLS_BPF m
NET_ACT_BPF m
''}
L2TP_V3 y
L2TP_IP m
L2TP_ETH m
BRIDGE_VLAN_FILTERING y
# Wireless networking.
CFG80211_WEXT? y # Without it, ipw2200 drivers don't build
IPW2100_MONITOR? y # support promiscuous mode
IPW2200_MONITOR? y # support promiscuous mode
HOSTAP_FIRMWARE? y # Support downloading firmware images with Host AP driver
HOSTAP_FIRMWARE_NVRAM? y
ATH9K_PCI? y # Detect Atheros AR9xxx cards on PCI(e) bus
ATH9K_AHB? y # Ditto, AHB bus
B43_PHY_HT? y
BCMA_HOST_PCI? y
# Enable various FB devices.
FB y
FB_EFI y
FB_NVIDIA_I2C y # Enable DDC Support
FB_RIVA_I2C y
FB_ATY_CT y # Mach64 CT/VT/GT/LT (incl. 3D RAGE) support
FB_ATY_GX y # Mach64 GX support
FB_SAVAGE_I2C y
FB_SAVAGE_ACCEL y
FB_SIS_300 y
FB_SIS_315 y
FB_3DFX_ACCEL y
FB_VESA y
FRAMEBUFFER_CONSOLE y
FRAMEBUFFER_CONSOLE_ROTATION y
${optionalString (stdenv.system == "i686-linux") ''
FB_GEODE y
''}
# Video configuration.
# Enable KMS for devices whose X.org driver supports it.
${optionalString (versionOlder version "4.3" && !(features.chromiumos or false)) ''
DRM_I915_KMS y
''}
# Allow specifying custom EDID on the kernel command line
DRM_LOAD_EDID_FIRMWARE y
VGA_SWITCHEROO y # Hybrid graphics support
DRM_GMA600 y
DRM_GMA3600 y
${optionalString (versionAtLeast version "4.5") ''
DRM_AMD_POWERPLAY y # necessary for amdgpu polaris support
''}
# Sound.
SND_DYNAMIC_MINORS y
SND_AC97_POWER_SAVE y # AC97 Power-Saving Mode
SND_HDA_INPUT_BEEP y # Support digital beep via input layer
SND_USB_CAIAQ_INPUT y
PSS_MIXER y # Enable PSS mixer (Beethoven ADSP-16 and other compatible)
# USB serial devices.
USB_SERIAL_GENERIC y # USB Generic Serial Driver
USB_SERIAL_KEYSPAN_MPR y # include firmware for various USB serial devices
USB_SERIAL_KEYSPAN_USA28 y
USB_SERIAL_KEYSPAN_USA28X y
USB_SERIAL_KEYSPAN_USA28XA y
USB_SERIAL_KEYSPAN_USA28XB y
USB_SERIAL_KEYSPAN_USA19 y
USB_SERIAL_KEYSPAN_USA18X y
USB_SERIAL_KEYSPAN_USA19W y
USB_SERIAL_KEYSPAN_USA19QW y
USB_SERIAL_KEYSPAN_USA19QI y
USB_SERIAL_KEYSPAN_USA49W y
USB_SERIAL_KEYSPAN_USA49WLC y
# Filesystem options - in particular, enable extended attributes and
# ACLs for all filesystems that support them.
FANOTIFY y
TMPFS y
EXT2_FS_XATTR y
EXT2_FS_POSIX_ACL y
EXT2_FS_SECURITY y
${optionalString (versionOlder version "4.0") ''
EXT2_FS_XIP y # Ext2 execute in place support
''}
EXT3_FS_POSIX_ACL y
EXT3_FS_SECURITY y
EXT4_FS_POSIX_ACL y
EXT4_FS_SECURITY y
REISERFS_FS_XATTR? y
REISERFS_FS_POSIX_ACL? y
REISERFS_FS_SECURITY? y
JFS_POSIX_ACL? y
JFS_SECURITY? y
XFS_QUOTA? y
XFS_POSIX_ACL? y
XFS_RT? y # XFS Realtime subvolume support
OCFS2_DEBUG_MASKLOG? n
BTRFS_FS_POSIX_ACL y
UBIFS_FS_ADVANCED_COMPR? y
${optionalString (versionAtLeast version "4.0" && versionOlder version "4.6") ''
NFSD_PNFS y
''}
NFSD_V2_ACL y
NFSD_V3 y
NFSD_V3_ACL y
NFSD_V4 y
${optionalString (versionAtLeast version "3.11") ''
NFSD_V4_SECURITY_LABEL y
''}
NFS_FSCACHE y
NFS_SWAP y
NFS_V3_ACL y
${optionalString (versionAtLeast version "3.11") ''
NFS_V4_1 y # NFSv4.1 client support
NFS_V4_2 y
NFS_V4_SECURITY_LABEL y
''}
CIFS_XATTR y
CIFS_POSIX y
CIFS_FSCACHE y
${optionalString (versionAtLeast version "3.12") ''
CEPH_FSCACHE y
''}
${optionalString (versionAtLeast version "3.14") ''
CEPH_FS_POSIX_ACL y
''}
${optionalString (versionAtLeast version "3.13") ''
SQUASHFS_FILE_DIRECT y
SQUASHFS_DECOMP_MULTI_PERCPU y
''}
SQUASHFS_XATTR y
SQUASHFS_ZLIB y
SQUASHFS_LZO y
SQUASHFS_XZ y
${optionalString (versionAtLeast version "3.19") ''
SQUASHFS_LZ4 y
''}
# Native Language Support modules, needed by some filesystems
NLS y
NLS_DEFAULT utf8
NLS_UTF8 m
NLS_CODEPAGE_437 m # VFAT default for the codepage= mount option
NLS_ISO8859_1 m # VFAT default for the iocharset= mount option
# Runtime security tests
DEBUG_SET_MODULE_RONX? y # Detect writes to read-only module pages
# Security related features.
RANDOMIZE_BASE? y
STRICT_DEVMEM y # Filter access to /dev/mem
SECURITY_SELINUX_BOOTPARAM_VALUE 0 # Disable SELinux by default
DEVKMEM n # Disable /dev/kmem
${if versionOlder version "3.14" then ''
CC_STACKPROTECTOR? y # Detect buffer overflows on the stack
'' else ''
CC_STACKPROTECTOR_REGULAR? y
''}
${optionalString (versionAtLeast version "3.12") ''
USER_NS y # Support for user namespaces
''}
# AppArmor support
SECURITY_APPARMOR y
DEFAULT_SECURITY_APPARMOR y
# Microcode loading support
MICROCODE y
MICROCODE_INTEL y
MICROCODE_AMD y
${optionalString (versionAtLeast version "3.11" && versionOlder version "4.4") ''
MICROCODE_EARLY y
MICROCODE_INTEL_EARLY y
MICROCODE_AMD_EARLY y
''}
# Misc. options.
8139TOO_8129 y
8139TOO_PIO n # PIO is slower
AIC79XX_DEBUG_ENABLE n
AIC7XXX_DEBUG_ENABLE n
AIC94XX_DEBUG n
${optionalString (versionAtLeast version "3.3" && versionOlder version "3.13") ''
AUDIT_LOGINUID_IMMUTABLE y
''}
${optionalString (versionOlder version "4.4") ''
B43_PCMCIA? y
''}
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
CRASH_DUMP? n
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
SECCOMP y # used by systemd >= 231
POSIX_MQUEUE y
FRONTSWAP y
FUSION y # Fusion MPT device support
IDE n # deprecated IDE support
${optionalString (versionAtLeast version "4.3") ''
IDLE_PAGE_TRACKING y
''}
IRDA_ULTRA y # Ultra (connectionless) protocol
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
MEGARAID_NEWGEN y
${optionalString (versionAtLeast version "3.15" && versionOlder version "4.8") ''
MLX4_EN_VXLAN y
''}
MODVERSIONS y
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
''}
MMC_BLOCK_MINORS 32 # 8 is default. Modern gpt tables on eMMC may go far beyond 8.
PPP_MULTILINK y # PPP multilink support
PPP_FILTER y
REGULATOR y # Voltage and Current Regulator Support
RC_DEVICES? y # Enable IR devices
RT2800USB_RT55XX y
SCHED_AUTOGROUP y
SCSI_LOGGING y # SCSI logging facility
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
# PCI-Expresscard hotplug support
${optionalString (versionAtLeast version "3.12") "HOTPLUG_PCI_PCIE y"}
# Linux containers.
NAMESPACES? y # Required by 'unshare' used by 'nixos-install'
RT_GROUP_SCHED? y
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
UPROBE_EVENT 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") ''
KVM_COMPAT? y
''}
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
''}
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
MEDIA_RC_SUPPORT y
MEDIA_USB_SUPPORT y
${optionalString (!(features.chromiumos or false)) ''
MEDIA_PCI_SUPPORT 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
# ChromiumOS support
${optionalString (features.chromiumos or false) ''
CHROME_PLATFORMS y
VGA_SWITCHEROO n
MMC_SDHCI_PXAV2 n
NET_IPVTI n
IPV6_VTI n
REGULATOR_FIXED_VOLTAGE n
TPS6105X n
CPU_FREQ_STAT y
IPV6 y
MFD_CROS_EC y
MFD_CROS_EC_LPC y
MFD_CROS_EC_DEV y
CHARGER_CROS_USB_PD y
I2C y
MEDIA_SUBDRV_AUTOSELECT n
VIDEO_IR_I2C n
BLK_DEV_DM y
ANDROID_PARANOID_NETWORK n
DM_VERITY n
DRM_VGEM n
CPU_FREQ_GOV_INTERACTIVE n
INPUT_KEYRESET n
DM_BOOTCACHE n
UID_CPUTIME n
${optionalString (versionAtLeast version "3.18") ''
CPUFREQ_DT n
EXTCON_CROS_EC n
DRM_POWERVR_ROGUE n
CHROMEOS_OF_FIRMWARE y
TEST_RHASHTABLE n
BCMDHD n
TRUSTY n
''}
${optionalString (versionOlder version "3.18") ''
MALI_MIDGARD n
DVB_USB_DIB0700 n
DVB_USB_DW2102 n
DVB_USB_PCTV452E n
DVB_USB_TTUSB2 n
DVB_USB_AF9015 n
DVB_USB_AF9035 n
DVB_USB_ANYSEE n
DVB_USB_AZ6007 n
DVB_USB_IT913X n
DVB_USB_LME2510 n
DVB_USB_RTL28XXU n
USB_S2255 n
VIDEO_EM28XX n
VIDEO_TM6000 n
USB_DWC2 n
USB_GSPCA n
SPEAKUP n
XO15_EBOOK n
USB_GADGET n
''}
''}
${kernelPlatform.kernelExtraConfig or ""}
${extraConfig}
''