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authorLinus Torvalds <torvalds@linux-foundation.org>2026-10-21 10:45:44 -1000
committerLinus Torvalds <torvalds@linux-foundation.org>2026-10-21 10:45:44 -1000
commitbb29b957eaaa15be33243550d9ee576c2d601669 (patch)
tree6827930af194a0ad5a8d8152fe2892d1be9b711b /Documentation/driver-api
parent12d5fc96ebbb3b948861805b32a4c3a96105ccd9 (diff)
parent997208ce9f43f01febac956cf9aeffe89945e3c1 (diff)
Merge tag 'kbuild-7.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux
Pull Kbuild / Kconfig updates from Nathan Chancellor: "Kbuild: - Suppress compiler flags in debug info for external module builds - Use '-fmacro-prefix-map' in more places in the build - Merge initial set of changes from Lorenzo's speed up series, along with some fixes found through testing: - Avoid allocating .modinfo in vmlinux - Speed up kallsyms by indexing symbols by token and outputting binary data to disk directly then including in assembly via .incbin - Don't sort $(NM) output when unnecessary - Only emit relocations on the final vmlinx link - Reimplement mksysmap in C - Move many cc-option and ld-option calls into the Kconfig stage to cache their results - Use pigz for gzip compression when available - Move gen_init_cpio and gen_initramfs.sh from usr/ to scripts/ - Add a TOML configuration to scripts/container and update documentation accordingly - Add a generic, opt-in mechanism for checking that headers can compile standalone - Update machine function splitting argument for LLVM 24 rename in AutoFDO build - Miscellaneous minor clean ups, fixes, and hardening, mostly found/fixed via LLMs Kconfig: - Turn recursive ranges into an error - Fix savedefconfig for defaults that were adjusted for being out of range and revert a previously applied workaround - Improvements and hardening around integer and hexadecimal values - Emit a warning when selecting or implying a choice symbol, which has no effect - Emit a warning when KCONFIG_PROBABILITY is malformed - Introduce def_string / def_int / def_hex to mirror the existing def_bool / def_tristate to succinctly set a value and type at the same time. - Add cc-option-str and ld-option-str macros to act like Kbuild's cc-option and ld-option, returning the string when the option is supported, allowing many checks to be moved into Kconfig - Minor usability improvements to Kconfig tests" * tag 'kbuild-7.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: (59 commits) kbuild: AutoFDO: Update split machine function argument for upstream rename kbuild: Mark the initcall ordering recipe as recursive kbuild: Mark the gzip recipes as recursive localmodconfig: Explicitly report boolean configs during integrity check scripts/make_fit: Ignore schema checks when decomposing DTBs clang-tools: Import os for broken pipe handling kconfig: use the value argument in sym_get_near_range_bound() kconfig: fix infinite loop in conf_choice() when no choice value is visible kconfig: cleanup stale comment about 'keys' array kconfig: Improve ergonomics around disabling warnings with cc-option scripts/Kconfig.toolchain: Drop compiler symbols from dependencies checkkconfigsymbols.py: Parse Git status output line by line gen_init_cpio: stop parsing on lines with a missing argument list .gitignore: drop Module.markers .gitignore: ignore pacman package signatures kbuild: add header check facility as a manually run static analyzer Documentation: dev-tools: refer to user ID rather than id Documentation: dev-tools: update container.rst with config file scripts: add TOML config to container tool kconfig: tests: {old,save}defconfig: Forward dynamic keyword arguments ...
Diffstat (limited to 'Documentation/driver-api')
-rw-r--r--Documentation/driver-api/early-userspace/early_userspace_support.rst16
1 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/driver-api/early-userspace/early_userspace_support.rst b/Documentation/driver-api/early-userspace/early_userspace_support.rst
index 60d1e1bc9413..1070f82e3578 100644
--- a/Documentation/driver-api/early-userspace/early_userspace_support.rst
+++ b/Documentation/driver-api/early-userspace/early_userspace_support.rst
@@ -55,9 +55,9 @@ user root (0). INITRAMFS_ROOT_GID can be set to a group ID that needs
to be mapped to group root (0).
A source file must be directives in the format required by the
-usr/gen_init_cpio utility (run 'usr/gen_init_cpio -h' to get the
+scripts/gen_init_cpio utility (run 'scripts/gen_init_cpio -h' to get the
file format). The directives in the file will be passed directly to
-usr/gen_init_cpio.
+scripts/gen_init_cpio.
When a combination of directories and files are specified then the
initramfs image will be an aggregate of all of them. In this way a user
@@ -69,17 +69,17 @@ early userspace image can be built by an unprivileged user.
As a technical note, when directories and files are specified, the
entire CONFIG_INITRAMFS_SOURCE is passed to
-usr/gen_initramfs.sh. This means that CONFIG_INITRAMFS_SOURCE
+scripts/gen_initramfs.sh. This means that CONFIG_INITRAMFS_SOURCE
can really be interpreted as any legal argument to
gen_initramfs.sh. If a directory is specified as an argument then
the contents are scanned, uid/gid translation is performed, and
-usr/gen_init_cpio file directives are output. If a file is
-specified as an argument to usr/gen_initramfs.sh then the
+scripts/gen_init_cpio file directives are output. If a file is
+specified as an argument to scripts/gen_initramfs.sh then the
contents of the file are simply copied to the output. All of the output
directives from directory scanning and file contents copying are
-processed by usr/gen_init_cpio.
+processed by scripts/gen_init_cpio.
-See also 'usr/gen_initramfs.sh -h'.
+See also 'scripts/gen_initramfs.sh -h'.
Where's this all leading?
=========================
@@ -142,7 +142,7 @@ b) some device and filesystem drivers built as modules and stored in an
c) using initramfs. The call to prepare_namespace() must be skipped.
This means that a binary must do all the work. Said binary can be stored
- into initramfs either via modifying usr/gen_init_cpio.c or via the new
+ into initramfs either via modifying scripts/gen_init_cpio.c or via the new
initrd format, an cpio archive. It must be called "/init". This binary
is responsible to do all the things prepare_namespace() would do.