Lines Matching +full:config +full:- +full:space
1 # SPDX-License-Identifier: GPL-2.0-only
2 config CC_VERSION_TEXT
8 - Re-run Kconfig when the compiler is updated
10 CC_VERSION_TEXT so it is recorded in include/config/auto.conf.cmd.
13 - Ensure full rebuild when the compiler is updated
14 include/linux/compiler-version.h contains this option in the comment
15 line so fixdep adds include/config/CC_VERSION_TEXT into the
16 auto-generated dependency. When the compiler is updated, syncconfig
19 config CC_IS_GCC
20 def_bool $(success,test "$(cc-name)" = GCC)
22 config GCC_VERSION
24 default $(cc-version) if CC_IS_GCC
27 config CC_IS_CLANG
28 def_bool $(success,test "$(cc-name)" = Clang)
30 config CLANG_VERSION
32 default $(cc-version) if CC_IS_CLANG
35 config AS_IS_GNU
36 def_bool $(success,test "$(as-name)" = GNU)
38 config AS_IS_LLVM
39 def_bool $(success,test "$(as-name)" = LLVM)
41 config AS_VERSION
45 default $(as-version)
47 config LD_IS_BFD
48 def_bool $(success,test "$(ld-name)" = BFD)
50 config LD_VERSION
52 default $(ld-version) if LD_IS_BFD
55 config LD_IS_LLD
56 def_bool $(success,test "$(ld-name)" = LLD)
58 config LLD_VERSION
60 default $(ld-version) if LD_IS_LLD
63 config RUSTC_VERSION
65 default $(rustc-version)
70 config RUST_IS_AVAILABLE
75 Please see Documentation/rust/quick-start.rst for instructions on how
81 config RUSTC_LLVM_VERSION
83 default $(rustc-llvm-version)
85 config CC_CAN_LINK
87 …default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLA…
88 …default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLA…
90 config CC_CAN_LINK_STATIC
92 …efault $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLAG…
93 …efault $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLAG…
97 config GCC_ASM_GOTO_OUTPUT_BROKEN
104 config CC_HAS_ASM_GOTO_OUTPUT
107 …nt x) { asm goto ("": "=r"(x) ::: bar); return x; bar: return 0; }' | $(CC) -x c - -c -o /dev/null)
109 config CC_HAS_ASM_GOTO_TIED_OUTPUT
111 # Detect buggy gcc and clang, fixed in gcc-11 clang-14.
112 …foo(int *x) { asm goto (".long (%l[bar]) - .": "+m"(*x) ::: bar); return *x; bar: return 0; }' | $…
114 config TOOLS_SUPPORT_RELR
115 …env "CC=$(CC)" "LD=$(LD)" "NM=$(NM)" "OBJCOPY=$(OBJCOPY)" $(srctree)/scripts/tools-support-relr.sh)
117 config CC_HAS_ASM_INLINE
118 def_bool $(success,echo 'void foo(void) { asm inline (""); }' | $(CC) -x c - -c -o /dev/null)
120 config CC_HAS_NO_PROFILE_FN_ATTR
121 … '__attribute__((no_profile_instrument_function)) int x();' | $(CC) -x c - -c -o /dev/null -Werror)
123 config CC_HAS_COUNTED_BY
126 … __attribute__((__counted_by__(count))); };' | $(CC) $(CLANG_FLAGS) -x c - -c -o /dev/null -Werror)
128 # https://github.com/llvm/llvm-project/pull/110497
129 # https://github.com/llvm/llvm-project/pull/112636
132 config LD_CAN_USE_KEEP_IN_OVERLAY
134 # https://github.com/llvm/llvm-project/pull/130661
137 config RUSTC_HAS_COERCE_POINTEE
140 config PAHOLE_VERSION
142 default $(shell,$(srctree)/scripts/pahole-version.sh $(PAHOLE))
144 config CONSTRUCTORS
147 config IRQ_WORK
150 config BUILDTIME_TABLE_SORT
153 config THREAD_INFO_IN_TASK
165 config BROKEN
168 config BROKEN_ON_SMP
173 config INIT_ENV_ARG_LIMIT
181 config COMPILE_TEST
189 drivers to compile-test them.
195 config WERROR
200 enables the '-Werror' (for C) and '-Dwarnings' (for Rust) flags
207 you may need to disable this config option in order to
212 config UAPI_HEADER_TEST
216 Compile test headers exported to user-space to ensure they are
217 self-contained, i.e. compilable as standalone units.
220 headers are self-contained, say Y here. Otherwise, choose N.
222 config LOCALVERSION
223 string "Local version - append to kernel release"
232 config LOCALVERSION_AUTO
241 A string of the format -gxxxxxxxx will be added to the localversion
242 if a git-based tree is found. The string generated by this will be
249 $ git rev-parse --verify HEAD
253 config BUILD_SALT
262 config HAVE_KERNEL_GZIP
265 config HAVE_KERNEL_BZIP2
268 config HAVE_KERNEL_LZMA
271 config HAVE_KERNEL_XZ
274 config HAVE_KERNEL_LZO
277 config HAVE_KERNEL_LZ4
280 config HAVE_KERNEL_ZSTD
283 config HAVE_KERNEL_UNCOMPRESSED
291 The linux kernel is a kind of self-extracting executable.
303 are low on disk space (embedded systems), but for whom ram
308 config KERNEL_GZIP
315 config KERNEL_BZIP2
325 config KERNEL_LZMA
333 config KERNEL_XZ
341 filter (i386, x86_64, ARM, ARM64, RISC-V, big endian PowerPC,
349 config KERNEL_LZO
357 config KERNEL_LZ4
361 LZ4 is an LZ77-type compressor with a fixed, byte-oriented encoding.
369 config KERNEL_ZSTD
379 config KERNEL_UNCOMPRESSED
391 config DEFAULT_INIT
401 config DEFAULT_HOSTNAME
410 config SYSVIPC
418 DOSEMU-HOWTO, available from <http://www.tldp.org/docs.html#howto>),
425 config SYSVIPC_SYSCTL
431 config SYSVIPC_COMPAT
435 config POSIX_MQUEUE
451 config POSIX_MQUEUE_SYSCTL
457 config WATCH_QUEUE
467 See Documentation/core-api/watch_queue.rst
469 config CROSS_MEMORY_ATTACH
476 to directly read from or write to another process' address space.
479 config USELIB
489 config AUDIT
498 config HAVE_ARCH_AUDITSYSCALL
501 config AUDITSYSCALL
513 config VIRT_CPU_ACCOUNTING
520 # Kind of a stub config for the pure tick based cputime accounting
521 config TICK_CPU_ACCOUNTING
531 config VIRT_CPU_ACCOUNTING_NATIVE
541 this also enables accounting of stolen time on logically-partitioned
544 config VIRT_CPU_ACCOUNTING_GEN
554 kernel-user boundaries using the context tracking subsystem.
565 config IRQ_TIME_ACCOUNTING
576 config HAVE_SCHED_AVG_IRQ
581 config SCHED_HW_PRESSURE
600 config BSD_PROCESS_ACCT
614 config BSD_PROCESS_ACCT_V3
626 config TASKSTATS
636 space on task exit.
640 config TASK_DELAY_ACCT
641 bool "Enable per-task delay accounting"
652 config TASK_XACCT
661 config TASK_IO_ACCOUNTING
662 bool "Enable per-task storage I/O accounting"
670 config PSI
690 config PSI_DEFAULT_DISABLED
701 common scheduling-intense workloads in practice (such as
712 config CPU_ISOLATION
726 config IKCONFIG
727 tristate "Kernel .config support"
729 This option enables the complete Linux kernel ".config" file
732 on-disk kernel. This information can be extracted from the kernel
733 image file with the script scripts/extract-ikconfig and used as
736 /proc/config.gz if enabled (below).
738 config IKCONFIG_PROC
739 bool "Enable access to .config through /proc/config.gz"
743 through /proc/config.gz.
745 config IKHEADERS
749 This option enables access to the in-kernel headers that are generated during
752 kheaders.ko is built which can be loaded on-demand to get access to headers.
754 config LOG_BUF_SHIFT
761 The final size is affected by LOG_CPU_MAX_BUF_SHIFT config
773 config LOG_CPU_MAX_BUF_SHIFT
783 of each CPU as a power of 2. The used space is typically only few
809 config PRINTK_INDEX
826 config HAVE_UNSTABLE_SCHED_CLOCK
829 config GENERIC_SCHED_CLOCK
834 config UCLAMP_TASK
852 config UCLAMP_BUCKETS_COUNT
861 the precision of clamping aggregation and tracking at run-time.
867 If a second 30% boosted task should be co-scheduled on the same CPU,
878 clamp buckets to trade off used memory for run-time tracking
886 # For architectures that want to enable the support for NUMA-affine scheduler
889 config ARCH_SUPPORTS_NUMA_BALANCING
899 config ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH
902 config CC_HAS_INT128
903 def_bool !$(cc-option,$(m64-flag) -D__SIZEOF_INT128__=0) && 64BIT
905 config CC_IMPLICIT_FALLTHROUGH
907 default "-Wimplicit-fallthrough=5" if CC_IS_GCC && $(cc-option,-Wimplicit-fallthrough=5)
908 default "-Wimplicit-fallthrough" if CC_IS_CLANG && $(cc-option,-Wunreachable-code-fallthrough)
910 # Currently, disable gcc-10+ array-bounds globally.
911 # It's still broken in gcc-13, so no upper bound yet.
912 config GCC10_NO_ARRAY_BOUNDS
915 config CC_NO_ARRAY_BOUNDS
919 # Currently, disable -Wstringop-overflow for GCC globally.
920 config GCC_NO_STRINGOP_OVERFLOW
923 config CC_NO_STRINGOP_OVERFLOW
927 config CC_STRINGOP_OVERFLOW
934 config ARCH_SUPPORTS_INT128
938 # all cpu-local but of different latencies, such as SuperH.
940 config ARCH_WANT_NUMA_VARIABLE_LOCALITY
943 config NUMA_BALANCING
955 config NUMA_BALANCING_DEFAULT_ENABLED
963 config SLAB_OBJ_EXT
974 - Documentation/scheduler/sched-design-CFS.rst (CFS)
975 - Documentation/admin-guide/cgroup-v1/ (features for grouping, isolation
982 config PAGE_COUNTER
985 config CGROUP_FAVOR_DYNMODS
995 config MEMCG
1003 config MEMCG_V1
1020 config BLK_CGROUP
1040 See Documentation/admin-guide/cgroup-v1/blkio-controller.rst for more information.
1042 config CGROUP_WRITEBACK
1056 config GROUP_SCHED_WEIGHT
1059 config FAIR_GROUP_SCHED
1065 config CFS_BANDWIDTH
1074 See Documentation/scheduler/sched-bwc.rst for more information.
1076 config RT_GROUP_SCHED
1083 schedule realtime tasks for non-root users until you allocate
1085 See Documentation/scheduler/sched-rt-group.rst for more information.
1087 config EXT_GROUP_SCHED
1095 config SCHED_MM_CID
1099 config UCLAMP_TASK_GROUP
1115 specified task-specific clamp value is constrained by the cgroup
1121 config CGROUP_PIDS
1137 config CGROUP_RDMA
1147 config CGROUP_DMEM
1157 config CGROUP_FREEZER
1164 controller includes important in-kernel memory consumers per default.
1168 config CGROUP_HUGETLB
1184 config CPUSETS
1196 config CPUSETS_V1
1209 config PROC_PID_CPUSET
1214 config CGROUP_DEVICE
1220 config CGROUP_CPUACCT
1226 config CGROUP_PERF
1230 This option extends the perf per-cpu mode to restrict monitoring
1237 config CGROUP_BPF
1250 config CGROUP_MISC
1262 /Documentation/admin-guide/cgroup-v2.rst.
1264 config CGROUP_DEBUG
1276 config SOCK_CGROUP_DATA
1294 config UTS_NS
1301 config TIME_NS
1309 config IPC_NS
1317 config USER_NS
1326 user-space use the memory control groups to limit the amount
1331 config PID_NS
1339 config NET_NS
1344 Allow user space to create what appear to be multiple instances
1349 config CHECKPOINT_RESTORE
1363 config SCHED_AUTOGROUP
1375 config RELAY
1376 bool "Kernel->user space relay support (formerly relayfs)"
1382 facilities to relay large amounts of data from kernel space to
1383 user space.
1387 config BLK_DEV_INITRD
1394 etc. See <file:Documentation/admin-guide/initrd.rst> for details.
1408 config BOOT_CONFIG
1409 bool "Boot config support"
1412 Extra boot config allows system admin to pass a config file as
1414 The boot config file must be attached at the end of initramfs
1416 See <file:Documentation/admin-guide/bootconfig.rst> for details.
1420 config BOOT_CONFIG_FORCE
1426 out even when the "bootconfig" kernel-boot parameter is omitted.
1428 make the kernel ignore the BOOT_CONFIG-supplied kernel-boot
1433 config BOOT_CONFIG_EMBED
1444 config BOOT_CONFIG_EMBED_FILE
1452 config INITRAMFS_PRESERVE_MTIME
1466 config CC_OPTIMIZE_FOR_PERFORMANCE
1467 bool "Optimize for performance (-O2)"
1470 with the "-O2" compiler flag for best performance and most
1471 helpful compile-time warnings.
1473 config CC_OPTIMIZE_FOR_SIZE
1474 bool "Optimize for size (-Os)"
1476 Choosing this option will pass "-Os" to your compiler resulting
1481 config HAVE_LD_DEAD_CODE_DATA_ELIMINATION
1491 config LD_DEAD_CODE_DATA_ELIMINATION
1495 depends on $(cc-option,-ffunction-sections -fdata-sections)
1496 depends on $(ld-option,--gc-sections)
1499 the linker by compiling with -ffunction-sections -fdata-sections,
1500 and linking with --gc-sections.
1502 This can reduce on disk and in-memory size of the kernel
1509 config LD_ORPHAN_WARN
1512 depends on $(ld-option,--orphan-handling=warn)
1513 depends on $(ld-option,--orphan-handling=error)
1515 config LD_ORPHAN_WARN_LEVEL
1521 config SYSCTL
1524 config HAVE_UID16
1527 config SYSCTL_EXCEPTION_TRACE
1530 Enable support for /proc/sys/debug/exception-trace.
1532 config SYSCTL_ARCH_UNALIGN_NO_WARN
1535 Enable support for /proc/sys/kernel/ignore-unaligned-usertrap
1539 config SYSCTL_ARCH_UNALIGN_ALLOW
1542 Enable support for /proc/sys/kernel/unaligned-trap
1547 config HAVE_PCSPKR_PLATFORM
1552 # Unhide debug options, to make the on-by-default options visible
1557 environments which can tolerate a "non-standard" kernel.
1560 config UID16
1561 bool "Enable 16-bit UID system calls" if EXPERT
1565 This enables the legacy 16-bit UID syscall wrappers.
1567 config MULTIUSER
1571 This option enables support for non-root users, groups and
1581 config SGETMASK_SYSCALL
1591 config SYSFS_SYSCALL
1601 config FHANDLE
1614 config POSIX_TIMERS
1631 config PRINTK
1642 config BUG
1652 config ELF_CORE
1660 config PCSPKR_PLATFORM
1661 bool "Enable PC-Speaker support" if EXPERT
1666 This option allows to disable the internal PC-Speaker
1669 config BASE_SMALL
1670 bool "Enable smaller-sized data structures for core" if EXPERT
1676 config FUTEX
1684 run glibc-based applications correctly.
1686 config FUTEX_PI
1691 config EPOLL
1698 config SIGNALFD
1707 config TIMERFD
1716 config EVENTFD
1725 config SHMEM
1736 config AIO
1744 config IO_URING
1753 config GCOV_PROFILE_URING
1766 config ADVISE_SYSCALLS
1774 space.
1776 config MEMBARRIER
1782 the cost of user-space memory barriers asymmetrically by transforming
1788 config KCMP
1792 user-space with the ability to compare two processes to see if they
1794 memory space.
1798 config RSEQ
1805 user-space cache for the current CPU number value, which
1806 speeds up getting the current CPU number from user-space,
1807 as well as an ABI to speed up user-space operations on
1808 per-CPU data.
1812 config DEBUG_RSEQ
1821 config CACHESTAT_SYSCALL
1831 config PC104
1838 config KALLSYMS
1846 config KALLSYMS_SELFTEST
1855 Start self-test automatically after system startup. Suggest executing
1859 config KALLSYMS_ALL
1877 config KALLSYMS_ABSOLUTE_PERCPU
1884 config ARCH_HAS_MEMBARRIER_CALLBACKS
1887 config ARCH_HAS_MEMBARRIER_SYNC_CORE
1890 config HAVE_PERF_EVENTS
1895 config GUEST_PERF_EVENTS
1899 config PERF_USE_VMALLOC
1906 config PERF_EVENTS
1915 Software events are supported either built-in or via the
1921 suffered, or branches mis-predicted - without slowing down the
1923 when a threshold number of events have passed - and can thus be
1934 config DEBUG_PERF_USE_VMALLOC
1949 config SYSTEM_DATA_VERIFICATION
1967 config PROFILING
1973 config RUST
1990 This allows other Rust-related options, like drivers written in Rust,
2000 config RUSTC_VERSION_TEXT
2007 config BINDGEN_VERSION_TEXT
2010 # The dummy parameter `workaround-for-0.69.0` is required to support 0.69.0
2011 # (https://github.com/rust-lang/rust-bindgen/pull/2678) and 0.71.0
2012 # (https://github.com/rust-lang/rust-bindgen/pull/3040). It can be removed
2015 default "$(shell,$(BINDGEN) --version workaround-for-0.69.0 2>/dev/null)"
2021 config TRACEPOINTS
2031 config RT_MUTEXES
2035 config MODULE_SIG_FORMAT
2041 config INIT_ALL_POSSIBLE
2052 config PREEMPT_NOTIFIERS
2055 config PADATA
2059 config ASN1
2069 config ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
2072 config ARCH_HAS_PREPARE_SYNC_CORE_CMD
2075 config ARCH_HAS_SYNC_CORE_BEFORE_USERMODE
2082 # macros for not-implemented syscalls in kernel/sys_ni.c and
2083 # kernel/time/posix-stubs.c. All these overrides need to be available in
2085 config ARCH_HAS_SYSCALL_WRAPPER