config RAID6_PQ_BENCHMARK
bool "Automatically choose fastest RAID6 PQ functions"
depends on RAID6_PQ
default y
help
Benchmark all available RAID6 PQ functions on init and choose the
fastest one.
config LINEAR_RANGES
tristate
config PACKING
bool "Generic bitfield packing and unpacking" select BITREVERSE
default n
help
This option provides the packing() helper function, which permits converting bitfields between a CPU-usable representation and a memory representation that can have any combination of these quirks:
- Is little endian (bytes arereversed within a 32-bit group)
- The least-significant 32-bit word comes first (within a 64-bit
group)
- The most significant bit of a byte isat its right (bit 0 of a
register description is numerically 2^7).
Drivers may use these helpers to match the bit indices as described in the data sheets of the peripherals they arein control of.
Whenin doubt, say N.
config PACKING_KUNIT_TEST
tristate "KUnit tests for packing library"if !KUNIT_ALL_TESTS
depends on PACKING && KUNIT
default KUNIT_ALL_TESTS
help
This builds KUnit tests for the packing library.
For more information on KUnit andunit tests in general,
please refer to the KUnit documentation in Documentation/dev-tools/kunit/.
Whenin doubt, say N.
config BITREVERSE
tristate
config HAVE_ARCH_BITREVERSE
bool
default n
help
This option enables the useof hardware bit-reversal instructions on
architectures which support such operations.
config INDIRECT_PIO
bool "Access I/O in non-MMIO mode"
depends on ARM64
depends on HAS_IOPORT
help On some platforms where noseparate I/O space exists, there are I/O
hosts which can not be accessed in MMIO mode. Using the logical PIO
mechanism, the host-local I/O resource can be mapped into system
logic PIO space shared with MMIO hosts, such as PCI/PCIe, then the
system can access the I/O devices with the mapped-logic PIO through
I/O accessors.
This way has relatively little I/O performance cost. Please make
sure your devices really need this configure item enabled.
Whenin doubt, say N.
config INDIRECT_IOMEM
bool
help
This is selected byother options/architectures to provide the
emulated iomem accessors.
config INDIRECT_IOMEM_FALLBACK
bool
depends on INDIRECT_IOMEM
help If INDIRECT_IOMEM is selected, this enables falling back to plain
mmio accesses when the IOmemoryaddressisnot a registered
emulated region.
config TRACE_MMIO_ACCESS
bool "Register read/write tracing"
depends on TRACING && ARCH_HAVE_TRACE_MMIO_ACCESS
help
Create tracepoints for MMIO read/write operations. These trace events
can be used for logging all MMIO read/write operations.
config AUDIT_GENERIC
bool
depends on AUDIT && !AUDIT_ARCH
default y
config AUDIT_ARCH_COMPAT_GENERIC
bool
default n
config AUDIT_COMPAT_GENERIC
bool
depends on AUDIT_GENERIC && AUDIT_ARCH_COMPAT_GENERIC && COMPAT
default y
config RANDOM32_SELFTEST
bool "PRNG perform self test on init"
help
This option enables the 32 bit PRNG library functions toperform a selfteston initialization.
#
# compression support isselect'ed if needed
#
config 842_COMPRESS select CRC32
tristate
config 842_DECOMPRESS select CRC32
tristate
config ZLIB_INFLATE
tristate
config ZLIB_DEFLATE
tristate select BITREVERSE
config ZLIB_DFLTCC
def_bool y
depends on S390
prompt "Enable s390x DEFLATE CONVERSION CALL support for kernel zlib"
help
Enable s390x hardware support for zlib in the kernel.
#
# These all provide a common interface (hence the apparent duplication with
# ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.)
#
config DECOMPRESS_GZIP select ZLIB_INFLATE
tristate
#
# Generic allocator support is selected if needed
#
config GENERIC_ALLOCATOR
bool
#
# reed solomon support isselect'ed if needed
#
config REED_SOLOMON
tristate
config REED_SOLOMON_ENC8
bool
config REED_SOLOMON_DEC8
bool
config REED_SOLOMON_ENC16
bool
config REED_SOLOMON_DEC16
bool
#
# BCH support is selected if needed
#
config BCH
tristate select BITREVERSE
config BCH_CONST_PARAMS
bool
help
Drivers may select this option to force specific constant
values for parameters 'm' (Galois field order) and't'
(error correction capability). Those specific values must
be setby declaring default values for symbols BCH_CONST_M and BCH_CONST_T.
Doing so will enable extra compiler optimizations,
improving encoding and decoding performance upto 2x for
usual (m,t) values (typically such that m*t < 200). When this option is selected, the BCH library supports
only a single (m,t) configuration. This is mainly useful for NAND flash board drivers requiring known, fixed BCH
parameters.
config BCH_CONST_M
int
range 5 15
help
Constant valuefor Galois field order'm'. If'k'is the
number ofdata bits to protect, 'm' should be chosen such
that (k + m*t) <= 2**m - 1.
Drivers should declare a default valuefor this symbol if
they select option BCH_CONST_PARAMS.
config BCH_CONST_T
int
help
Constant valueforerror correction capability in bits 't'.
Drivers should declare a default valuefor this symbol if
they select option BCH_CONST_PARAMS.
#
# Textsearch support isselect'ed if needed
#
config TEXTSEARCH
bool
config TEXTSEARCH_KMP
tristate
config TEXTSEARCH_BM
tristate
config TEXTSEARCH_FSM
tristate
config BTREE
bool
config INTERVAL_TREE
bool
help
Simple, embeddable, interval-tree. Can find the startof an
overlapping range in log(n) timeandthen iterate over all
overlapping nodes. The algorithm is implemented as an
augmented rbtree.
See:
Documentation/core-api/rbtree.rst
for more information.
config INTERVAL_TREE_SPAN_ITER
bool
depends on INTERVAL_TREE
config XARRAY_MULTI
bool
help
Support entries which occupy multiple consecutive indices in the
XArray.
config ASSOCIATIVE_ARRAY
bool
help
Generic associative array. Can be searched and iterated over whilst
it is being modified. It isalso reasonably quick tosearchand
modify. The algorithms are non-recursive, and the trees are highly
capacious.
See:
Documentation/core-api/assoc_array.rst
for more information.
config CLOSURES
bool
config HAS_IOMEM
bool
depends on !NO_IOMEM
default y
config HAS_IOPORT
bool
config HAS_IOPORT_MAP
bool
depends on HAS_IOMEM && !NO_IOPORT_MAP
default y
source "kernel/dma/Kconfig"
config SGL_ALLOC
bool
default n
config IOMMU_HELPER
bool
config CHECK_SIGNATURE
bool
config CPUMASK_OFFSTACK
bool "Force CPU masks off stack"if DEBUG_PER_CPU_MAPS
help Usedynamic allocation for cpumask_var_t, instead of putting
them on the stack. This is a bit more expensive, but avoids
stack overflow.
config FORCE_NR_CPUS
def_bool !SMP
config CPU_RMAP
bool
depends on SMP
config DQL
bool
config GLOB
bool
# This actually supports modular compilation, but the module overhead
# is ridiculous for the amount ofcode involved. Until an out-of-tree
# driver asks for it, we'll just link it directly it into the kernel
# when required. Since we're ignoring out-of-tree users, there's also
# no need bother prompting for a manual decision:
# prompt "glob_match() function"
help
This option provides a glob_match functionfor performing
simple text pattern matching. It originated in the ATA code to blacklist particular drive models, but other device drivers
may need similar functionality.
All drivers in the Linux kernel tree that require this function
should automatically select this option. Say N unless you are compiling an out-of tree driver which tells you that it
depends on this.
config GLOB_SELFTEST
tristate "glob self-test on init"
depends on GLOB
help
This option enables a simple self-test of the glob_match functionon startup. It is primarily useful for people
working on the codeto ensure they haven't introduced any
regressions.
It only adds a little bit ofcodeand slows kernel boot (or
module load) by a small amount, so you're welcome to play with
it, but you probably don't need it.
#
# Netlink attribute parsing support isselect'ed if needed
#
config NLATTR
bool
#
# Generic 64-bit atomic support is selected if needed
#
config GENERIC_ATOMIC64
bool
config LRU_CACHE
tristate
config CLZ_TAB
bool
config IRQ_POLL
bool "IRQ polling library"
help
Helper library to poll interrupt mitigation using polling.
config MPILIB
tristate select CLZ_TAB
help
Multiprecision maths library from GnuPG.
It is used to implement RSA digital signature verification,
which is used by IMA/EVM digital signature extension.
config SIGNATURE
tristate
depends on KEYS select CRYPTO select CRYPTO_SHA1 select MPILIB
help
Digital signature verification. Currently only RSA is supported.
Implementation is done using GnuPG MPI library
config DIMLIB
tristate
depends on NET
help Dynamic Interrupt Moderation library.
Implements an algorithm for dynamically changing CQ moderation values
according toruntime performance.
#
# libfdt files, only selected if needed.
#
config LIBFDT
bool
config OID_REGISTRY
tristate
help
Enable fast lookup object identifier registry.
config UCS2_STRING
tristate
#
# generic vdso
#
source "lib/vdso/Kconfig"
source "lib/fonts/Kconfig"
config SG_SPLIT
def_bool n
help
Provides a helper to split scatterlists into chunks, each chunk being
a scatterlist. This should be selected by a driver or an API which
whishes to split a scatterlist amongst multiple DMA channels.
config SG_POOL
def_bool n
help
Provides a helper to allocate chained scatterlists. This should be
selected by a driver or an API which whishes to allocate chained
scatterlist.
# use memcpy to implement user copies for nommu architectures
config UACCESS_MEMCPY
bool
config ARCH_HAS_UACCESS_FLUSHCACHE
bool
# arch has a concept of a recoverable synchronous exception due to a
# memory-read error like x86 machine-check or ARM data-abort, and
# implements copy_mc_to_{user,kernel} to abort and report
# 'bytes-transferred'if that exception fires when accessing the source
# buffer.
config ARCH_HAS_COPY_MC
bool
# Temporary. Goes away whenall archs are cleaned up
config ARCH_STACKWALK
bool
config STACKDEPOT
bool select STACKTRACE
help
Stack depot: stack trace storage that avoids duplication
config STACKDEPOT_ALWAYS_INIT
bool select STACKDEPOT
help
Always initialize stack depot during early boot
config STACKDEPOT_MAX_FRAMES
int "Maximum number of frames in trace saved in stack depot"
range 1 256
default 64
depends on STACKDEPOT
config REF_TRACKER
bool
depends on STACKTRACE_SUPPORT select STACKDEPOT
config SBITMAP
bool
config PARMAN
tristate "parman"if COMPILE_TEST
config OBJAGG
tristate "objagg"if COMPILE_TEST
config LWQ_TEST
bool "Boot-time test for lwq queuing"
help Run boot-time testof light-weight queuing.
endmenu
config GENERIC_IOREMAP
bool
config GENERIC_LIB_ASHLDI3
bool
config GENERIC_LIB_ASHRDI3
bool
config GENERIC_LIB_LSHRDI3
bool
config GENERIC_LIB_MULDI3
bool
config GENERIC_LIB_CMPDI2
bool
config GENERIC_LIB_UCMPDI2
bool
config GENERIC_LIB_DEVMEM_IS_ALLOWED
bool
config PLDMFW
bool select CRC32
default n
config ASN1_ENCODER
tristate
config POLYNOMIAL
tristate
config FIRMWARE_TABLE
bool
config UNION_FIND
bool
config MIN_HEAP
bool
Messung V0.5
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