Lines Matching +full:embedded +full:- +full:trace +full:- +full:extension
1 # SPDX-License-Identifier: GPL-2.0-only
8 - Re-run Kconfig when the compiler is updated
13 - Ensure full rebuild when the compiler is updated
14 include/linux/compiler-version.h contains this option in the comment
16 auto-generated dependency. When the compiler is updated, syncconfig
20 def_bool $(success,test "$(cc-name)" = GCC)
24 default $(cc-version) if CC_IS_GCC
28 def_bool $(success,test "$(cc-name)" = Clang)
32 default $(cc-version) if CC_IS_CLANG
36 def_bool $(success,test "$(as-name)" = GNU)
39 def_bool $(success,test "$(as-name)" = LLVM)
45 default $(as-version)
48 def_bool $(success,test "$(ld-name)" = BFD)
52 default $(ld-version) if LD_IS_BFD
56 def_bool $(success,test "$(ld-name)" = LLD)
60 default $(ld-version) if LD_IS_LLD
68 Please see Documentation/rust/quick-start.rst for instructions on how
76 …default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLA…
77 …default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLA…
81 …efault $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLAG…
82 …efault $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLAG…
85 …nt x) { asm goto ("": "=r"(x) ::: bar); return x; bar: return 0; }' | $(CC) -x c - -c -o /dev/null)
89 # Detect buggy gcc and clang, fixed in gcc-11 clang-14.
90 …foo(int *x) { asm goto (".long (%l[bar]) - .": "+m"(*x) ::: bar); return *x; bar: return 0; }' | $…
102 …env "CC=$(CC)" "LD=$(LD)" "NM=$(NM)" "OBJCOPY=$(OBJCOPY)" $(srctree)/scripts/tools-support-relr.sh)
105 def_bool $(success,echo 'void foo(void) { asm inline (""); }' | $(CC) -x c - -c -o /dev/null)
108 … '__attribute__((no_profile_instrument_function)) int x();' | $(CC) -x c - -c -o /dev/null -Werror)
112 default $(shell,$(srctree)/scripts/pahole-version.sh $(PAHOLE))
159 drivers to compile-test them.
170 enables the '-Werror' (for C) and '-Dwarnings' (for Rust) flags
186 Compile test headers exported to user-space to ensure they are
187 self-contained, i.e. compilable as standalone units.
190 headers are self-contained, say Y here. Otherwise, choose N.
193 string "Local version - append to kernel release"
211 A string of the format -gxxxxxxxx will be added to the localversion
212 if a git-based tree is found. The string generated by this will be
219 $ git rev-parse --verify HEAD
261 The linux kernel is a kind of self-extracting executable.
273 are low on disk space (embedded systems), but for whom ram
311 filter (i386, x86_64, ARM, IA-64, PowerPC, and SPARC), XZ
330 LZ4 is an LZ77-type compressor with a fixed, byte-oriented encoding.
387 DOSEMU-HOWTO, available from <http://www.tldp.org/docs.html#howto>),
436 See Documentation/core-api/watch_queue.rst
510 this also enables accounting of stolen time on logically-partitioned
523 kernel-user boundaries using the context tracking subsystem.
610 bool "Enable per-task delay accounting"
631 bool "Enable per-task storage I/O accounting"
670 common scheduling-intense workloads in practice (such as
701 on-disk kernel. This information can be extracted from the kernel
702 image file with the script scripts/extract-ikconfig and used as
718 This option enables access to the in-kernel headers that are generated during
721 kheaders.ko is built which can be loaded on-demand to get access to headers.
830 the precision of clamping aggregation and tracking at run-time.
836 If a second 30% boosted task should be co-scheduled on the same CPU,
847 clamp buckets to trade off used memory for run-time tracking
862 # For architectures that want to enable the support for NUMA-affine scheduler
879 def_bool !$(cc-option,$(m64-flag) -D__SIZEOF_INT128__=0) && 64BIT
883 default "-Wimplicit-fallthrough=5" if CC_IS_GCC && $(cc-option,-Wimplicit-fallthrough=5)
884 default "-Wimplicit-fallthrough" if CC_IS_CLANG && $(cc-option,-Wunreachable-code-fallthrough)
886 # Currently, disable gcc-11+ array-bounds globally.
887 # It's still broken in gcc-13, so no upper bound yet.
902 # all cpu-local but of different latencies, such as SuperH.
935 - Documentation/scheduler/sched-design-CFS.rst (CFS)
936 - Documentation/admin-guide/cgroup-v1/ (features for grouping, isolation
988 See Documentation/admin-guide/cgroup-v1/blkio-controller.rst for more information.
1018 See Documentation/scheduler/sched-bwc.rst for more information.
1027 schedule realtime tasks for non-root users until you allocate
1029 See Documentation/scheduler/sched-rt-group.rst for more information.
1053 specified task-specific clamp value is constrained by the cgroup
1092 controller includes important in-kernel memory consumers per default.
1144 This option extends the perf per-cpu mode to restrict monitoring
1176 /Documentation/admin-guide/cgroup-v2.rst.
1240 user-space use the memory control groups to limit the amount
1290 bool "Kernel->user space relay support (formerly relayfs)"
1308 etc. See <file:Documentation/admin-guide/initrd.rst> for details.
1327 complemental extension of kernel cmdline when booting.
1330 See <file:Documentation/admin-guide/bootconfig.rst> for details.
1340 out even when the "bootconfig" kernel-boot parameter is omitted.
1342 make the kernel ignore the BOOT_CONFIG-supplied kernel-boot
1359 string "Embedded bootconfig file path"
1362 Specify a bootconfig file which will be embedded to the kernel.
1381 bool "Optimize for performance (-O2)"
1384 with the "-O2" compiler flag for best performance and most
1385 helpful compile-time warnings.
1388 bool "Optimize for size (-Os)"
1390 Choosing this option will pass "-Os" to your compiler resulting
1409 depends on $(cc-option,-ffunction-sections -fdata-sections)
1410 depends on $(ld-option,--gc-sections)
1413 the linker by compiling with -ffunction-sections -fdata-sections,
1414 and linking with --gc-sections.
1416 This can reduce on disk and in-memory size of the kernel
1426 depends on $(ld-option,--orphan-handling=warn)
1427 depends on $(ld-option,--orphan-handling=error)
1444 Enable support for /proc/sys/debug/exception-trace.
1449 Enable support for /proc/sys/kernel/ignore-unaligned-usertrap
1456 Enable support for /proc/sys/kernel/unaligned-trap
1471 # Unhide debug options, to make the on-by-default options visible
1476 environments which can tolerate a "non-standard" kernel.
1480 bool "Enable 16-bit UID system calls" if EXPERT
1484 This enables the legacy 16-bit UID syscall wrappers.
1490 This option enables support for non-root users, groups and
1538 Some embedded systems have no use for them and therefore they
1568 option for embedded systems with no facilities for reporting errors.
1580 bool "Enable PC-Speaker support" if EXPERT
1585 This option allows to disable the internal PC-Speaker
1590 bool "Enable full-sized data structures for core" if EXPERT
1604 run glibc-based applications correctly.
1679 usage, improving performance. If building an embedded system where no
1689 the cost of user-space memory barriers asymmetrically by transforming
1712 Start self-test automatically after system startup. Suggest executing
1745 emit the symbol references in the kallsyms table as 32-bit entries,
1752 On 64-bit builds, this reduces the size of the address table by 50%,
1771 user-space with the ability to compare two processes to see if they
1784 user-space cache for the current CPU number value, which
1785 speeds up getting the current CPU number from user-space,
1786 as well as an ABI to speed up user-space operations on
1787 per-CPU data.
1842 Software events are supported either built-in or via the
1848 suffered, or branches mis-predicted - without slowing down the
1850 when a threshold number of events have passed - and can thus be
1912 This allows other Rust-related options, like drivers written in Rust,
1925 default $(shell,command -v $(RUSTC) >/dev/null 2>&1 && $(RUSTC) --version || echo n)
1930 default $(shell,command -v $(BINDGEN) >/dev/null 2>&1 && $(BINDGEN) --version || echo n)
1998 # macros for not-implemented syscalls in kernel/sys_ni.c and
1999 # kernel/time/posix-stubs.c. All these overrides need to be available in