diff options
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/.gitignore | 1 | ||||
| -rw-r--r-- | scripts/Kbuild.include | 2 | ||||
| -rw-r--r-- | scripts/Makefile | 3 | ||||
| -rw-r--r-- | scripts/Makefile.build | 2 | ||||
| -rw-r--r-- | scripts/Makefile.kasan | 4 | ||||
| -rw-r--r-- | scripts/Makefile.kcsan | 2 | ||||
| -rw-r--r-- | scripts/Makefile.modfinal | 5 | ||||
| -rw-r--r-- | scripts/Makefile.ubsan | 3 | ||||
| -rwxr-xr-x | scripts/clang-tools/gen_compile_commands.py | 236 | ||||
| -rwxr-xr-x | scripts/clang-tools/run-clang-tools.py | 74 | ||||
| -rwxr-xr-x | scripts/gen_compile_commands.py | 151 | ||||
| -rw-r--r-- | scripts/kconfig/Makefile | 16 | ||||
| -rwxr-xr-x | scripts/link-vmlinux.sh | 20 | ||||
| -rwxr-xr-x | scripts/mkcompile_h | 2 | ||||
| -rw-r--r-- | scripts/module.lds.S (renamed from scripts/module-common.lds) | 3 | ||||
| -rwxr-xr-x | scripts/namespace.pl | 473 | ||||
| -rwxr-xr-x | scripts/package/builddeb | 19 | ||||
| -rwxr-xr-x | scripts/package/mkdebian | 44 | ||||
| -rwxr-xr-x | scripts/setlocalversion | 21 |
19 files changed, 401 insertions, 680 deletions
diff --git a/scripts/.gitignore b/scripts/.gitignore index 0d1c8e217cd7..a6c11316c969 100644 --- a/scripts/.gitignore +++ b/scripts/.gitignore @@ -8,3 +8,4 @@ asn1_compiler extract-cert sign-file insert-sys-cert +/module.lds diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include index 83a1637417e5..08e011175b4c 100644 --- a/scripts/Kbuild.include +++ b/scripts/Kbuild.include @@ -56,8 +56,6 @@ kecho := $($(quiet)kecho) # - If no file exist it is created # - If the content differ the new file is used # - If they are equal no change, and no timestamp update -# - stdin is piped in from the first prerequisite ($<) so one has -# to specify a valid file as first prerequisite (often the kbuild file) define filechk $(Q)set -e; \ mkdir -p $(dir $@); \ diff --git a/scripts/Makefile b/scripts/Makefile index bc018e4b733e..b5418ec587fb 100644 --- a/scripts/Makefile +++ b/scripts/Makefile @@ -29,6 +29,9 @@ endif # The following programs are only built on demand hostprogs += unifdef +# The module linker script is preprocessed on demand +targets += module.lds + subdir-$(CONFIG_GCC_PLUGINS) += gcc-plugins subdir-$(CONFIG_MODVERSIONS) += genksyms subdir-$(CONFIG_SECURITY_SELINUX) += selinux diff --git a/scripts/Makefile.build b/scripts/Makefile.build index a467b9323442..ae647379b579 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -111,7 +111,7 @@ endif # --------------------------------------------------------------------------- quiet_cmd_cc_s_c = CC $(quiet_modtag) $@ - cmd_cc_s_c = $(CC) $(filter-out $(DEBUG_CFLAGS), $(c_flags)) $(DISABLE_LTO) -fverbose-asm -S -o $@ $< + cmd_cc_s_c = $(CC) $(filter-out $(DEBUG_CFLAGS), $(c_flags)) -fverbose-asm -S -o $@ $< $(obj)/%.s: $(src)/%.c FORCE $(call if_changed_dep,cc_s_c) diff --git a/scripts/Makefile.kasan b/scripts/Makefile.kasan index f4beee1b0013..1e000cc2e7b4 100644 --- a/scripts/Makefile.kasan +++ b/scripts/Makefile.kasan @@ -1,8 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 -ifdef CONFIG_KASAN CFLAGS_KASAN_NOSANITIZE := -fno-builtin KASAN_SHADOW_OFFSET ?= $(CONFIG_KASAN_SHADOW_OFFSET) -endif ifdef CONFIG_KASAN_GENERIC @@ -49,3 +47,5 @@ CFLAGS_KASAN := -fsanitize=kernel-hwaddress \ $(instrumentation_flags) endif # CONFIG_KASAN_SW_TAGS + +export CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE diff --git a/scripts/Makefile.kcsan b/scripts/Makefile.kcsan index c37f9518d5d9..37cb504c77e1 100644 --- a/scripts/Makefile.kcsan +++ b/scripts/Makefile.kcsan @@ -9,7 +9,7 @@ endif # Keep most options here optional, to allow enabling more compilers if absence # of some options does not break KCSAN nor causes false positive reports. -CFLAGS_KCSAN := -fsanitize=thread \ +export CFLAGS_KCSAN := -fsanitize=thread \ $(call cc-option,$(call cc-param,tsan-instrument-func-entry-exit=0) -fno-optimize-sibling-calls) \ $(call cc-option,$(call cc-param,tsan-compound-read-before-write=1),$(call cc-option,$(call cc-param,tsan-instrument-read-before-write=1))) \ $(call cc-param,tsan-distinguish-volatile=1) diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal index 411c1e600e7d..ae01baf96f4e 100644 --- a/scripts/Makefile.modfinal +++ b/scripts/Makefile.modfinal @@ -33,11 +33,10 @@ quiet_cmd_ld_ko_o = LD [M] $@ cmd_ld_ko_o = \ $(LD) -r $(KBUILD_LDFLAGS) \ $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \ - $(addprefix -T , $(KBUILD_LDS_MODULE)) \ - -o $@ $(filter %.o, $^); \ + -T scripts/module.lds -o $@ $(filter %.o, $^); \ $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) -$(modules): %.ko: %.o %.mod.o $(KBUILD_LDS_MODULE) FORCE +$(modules): %.ko: %.o %.mod.o scripts/module.lds FORCE +$(call if_changed,ld_ko_o) targets += $(modules) $(modules:.ko=.mod.o) diff --git a/scripts/Makefile.ubsan b/scripts/Makefile.ubsan index 4e3fff0745e8..9716dab06bc7 100644 --- a/scripts/Makefile.ubsan +++ b/scripts/Makefile.ubsan @@ -1,4 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 + +export CFLAGS_UBSAN := + ifdef CONFIG_UBSAN_ALIGNMENT CFLAGS_UBSAN += $(call cc-option, -fsanitize=alignment) endif diff --git a/scripts/clang-tools/gen_compile_commands.py b/scripts/clang-tools/gen_compile_commands.py new file mode 100755 index 000000000000..19963708bcf8 --- /dev/null +++ b/scripts/clang-tools/gen_compile_commands.py @@ -0,0 +1,236 @@ +#!/usr/bin/env python +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright (C) Google LLC, 2018 +# +# Author: Tom Roeder <tmroeder@google.com> +# +"""A tool for generating compile_commands.json in the Linux kernel.""" + +import argparse +import json +import logging +import os +import re +import subprocess + +_DEFAULT_OUTPUT = 'compile_commands.json' +_DEFAULT_LOG_LEVEL = 'WARNING' + +_FILENAME_PATTERN = r'^\..*\.cmd$' +_LINE_PATTERN = r'^cmd_[^ ]*\.o := (.* )([^ ]*\.c)$' +_VALID_LOG_LEVELS = ['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'] + + +def parse_arguments(): + """Sets up and parses command-line arguments. + + Returns: + log_level: A logging level to filter log output. + directory: The work directory where the objects were built. + ar: Command used for parsing .a archives. + output: Where to write the compile-commands JSON file. + paths: The list of files/directories to handle to find .cmd files. + """ + usage = 'Creates a compile_commands.json database from kernel .cmd files' + parser = argparse.ArgumentParser(description=usage) + + directory_help = ('specify the output directory used for the kernel build ' + '(defaults to the working directory)') + parser.add_argument('-d', '--directory', type=str, default='.', + help=directory_help) + + output_help = ('path to the output command database (defaults to ' + + _DEFAULT_OUTPUT + ')') + parser.add_argument('-o', '--output', type=str, default=_DEFAULT_OUTPUT, + help=output_help) + + log_level_help = ('the level of log messages to produce (defaults to ' + + _DEFAULT_LOG_LEVEL + ')') + parser.add_argument('--log_level', choices=_VALID_LOG_LEVELS, + default=_DEFAULT_LOG_LEVEL, help=log_level_help) + + ar_help = 'command used for parsing .a archives' + parser.add_argument('-a', '--ar', type=str, default='llvm-ar', help=ar_help) + + paths_help = ('directories to search or files to parse ' + '(files should be *.o, *.a, or modules.order). ' + 'If nothing is specified, the current directory is searched') + parser.add_argument('paths', type=str, nargs='*', help=paths_help) + + args = parser.parse_args() + + return (args.log_level, + os.path.abspath(args.directory), + args.output, + args.ar, + args.paths if len(args.paths) > 0 else [args.directory]) + + +def cmdfiles_in_dir(directory): + """Generate the iterator of .cmd files found under the directory. + + Walk under the given directory, and yield every .cmd file found. + + Args: + directory: The directory to search for .cmd files. + + Yields: + The path to a .cmd file. + """ + + filename_matcher = re.compile(_FILENAME_PATTERN) + + for dirpath, _, filenames in os.walk(directory): + for filename in filenames: + if filename_matcher.match(filename): + yield os.path.join(dirpath, filename) + + +def to_cmdfile(path): + """Return the path of .cmd file used for the given build artifact + + Args: + Path: file path + + Returns: + The path to .cmd file + """ + dir, base = os.path.split(path) + return os.path.join(dir, '.' + base + '.cmd') + + +def cmdfiles_for_o(obj): + """Generate the iterator of .cmd files associated with the object + + Yield the .cmd file used to build the given object + + Args: + obj: The object path + + Yields: + The path to .cmd file + """ + yield to_cmdfile(obj) + + +def cmdfiles_for_a(archive, ar): + """Generate the iterator of .cmd files associated with the archive. + + Parse the given archive, and yield every .cmd file used to build it. + + Args: + archive: The archive to parse + + Yields: + The path to every .cmd file found + """ + for obj in subprocess.check_output([ar, '-t', archive]).decode().split(): + yield to_cmdfile(obj) + + +def cmdfiles_for_modorder(modorder): + """Generate the iterator of .cmd files associated with the modules.order. + + Parse the given modules.order, and yield every .cmd file used to build the + contained modules. + + Args: + modorder: The modules.order file to parse + + Yields: + The path to every .cmd file found + """ + with open(modorder) as f: + for line in f: + ko = line.rstrip() + base, ext = os.path.splitext(ko) + if ext != '.ko': + sys.exit('{}: module path must end with .ko'.format(ko)) + mod = base + '.mod' + # The first line of *.mod lists the objects that compose the module. + with open(mod) as m: + for obj in m.readline().split(): + yield to_cmdfile(obj) + + +def process_line(root_directory, command_prefix, file_path): + """Extracts information from a .cmd line and creates an entry from it. + + Args: + root_directory: The directory that was searched for .cmd files. Usually + used directly in the "directory" entry in compile_commands.json. + command_prefix: The extracted command line, up to the last element. + file_path: The .c file from the end of the extracted command. + Usually relative to root_directory, but sometimes absolute. + + Returns: + An entry to append to compile_commands. + + Raises: + ValueError: Could not find the extracted file based on file_path and + root_directory or file_directory. + """ + # The .cmd files are intended to be included directly by Make, so they + # escape the pound sign '#', either as '\#' or '$(pound)' (depending on the + # kernel version). The compile_commands.json file is not interepreted + # by Make, so this code replaces the escaped version with '#'. + prefix = command_prefix.replace('\#', '#').replace('$(pound)', '#') + + # Use os.path.abspath() to normalize the path resolving '.' and '..' . + abs_path = os.path.abspath(os.path.join(root_directory, file_path)) + if not os.path.exists(abs_path): + raise ValueError('File %s not found' % abs_path) + return { + 'directory': root_directory, + 'file': abs_path, + 'command': prefix + file_path, + } + + +def main(): + """Walks through the directory and finds and parses .cmd files.""" + log_level, directory, output, ar, paths = parse_arguments() + + level = getattr(logging, log_level) + logging.basicConfig(format='%(levelname)s: %(message)s', level=level) + + line_matcher = re.compile(_LINE_PATTERN) + + compile_commands = [] + + for path in paths: + # If 'path' is a directory, handle all .cmd files under it. + # Otherwise, handle .cmd files associated with the file. + # Most of built-in objects are linked via archives (built-in.a or lib.a) + # but some objects are linked to vmlinux directly. + # Modules are listed in modules.order. + if os.path.isdir(path): + cmdfiles = cmdfiles_in_dir(path) + elif path.endswith('.o'): + cmdfiles = cmdfiles_for_o(path) + elif path.endswith('.a'): + cmdfiles = cmdfiles_for_a(path, ar) + elif path.endswith('modules.order'): + cmdfiles = cmdfiles_for_modorder(path) + else: + sys.exit('{}: unknown file type'.format(path)) + + for cmdfile in cmdfiles: + with open(cmdfile, 'rt') as f: + result = line_matcher.match(f.readline()) + if result: + try: + entry = process_line(directory, result.group(1), + result.group(2)) + compile_commands.append(entry) + except ValueError as err: + logging.info('Could not add line from %s: %s', + cmdfile, err) + + with open(output, 'wt') as f: + json.dump(compile_commands, f, indent=2, sort_keys=True) + + +if __name__ == '__main__': + main() diff --git a/scripts/clang-tools/run-clang-tools.py b/scripts/clang-tools/run-clang-tools.py new file mode 100755 index 000000000000..fa7655c7cec0 --- /dev/null +++ b/scripts/clang-tools/run-clang-tools.py @@ -0,0 +1,74 @@ +#!/usr/bin/env python +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright (C) Google LLC, 2020 +# +# Author: Nathan Huckleberry <nhuck@google.com> +# +"""A helper routine run clang-tidy and the clang static-analyzer on +compile_commands.json. +""" + +import argparse +import json +import multiprocessing +import os +import subprocess +import sys + + +def parse_arguments(): + """Set up and parses command-line arguments. + Returns: + args: Dict of parsed args + Has keys: [path, type] + """ + usage = """Run clang-tidy or the clang static-analyzer on a + compilation database.""" + parser = argparse.ArgumentParser(description=usage) + + type_help = "Type of analysis to be performed" + parser.add_argument("type", + choices=["clang-tidy", "clang-analyzer"], + help=type_help) + path_help = "Path to the compilation database to parse" + parser.add_argument("path", type=str, help=path_help) + + return parser.parse_args() + + +def init(l, a): + global lock + global args + lock = l + args = a + + +def run_analysis(entry): + # Disable all checks, then re-enable the ones we want + checks = "-checks=-*," + if args.type == "clang-tidy": + checks += "linuxkernel-*" + else: + checks += "clang-analyzer-*" + p = subprocess.run(["clang-tidy", "-p", args.path, checks, entry["file"]], + stdout=subprocess.PIPE, + stderr=subprocess.STDOUT, + cwd=entry["directory"]) + with lock: + sys.stderr.buffer.write(p.stdout) + + +def main(): + args = parse_arguments() + + lock = multiprocessing.Lock() + pool = multiprocessing.Pool(initializer=init, initargs=(lock, args)) + # Read JSON data into the datastore variable + with open(args.path, "r") as f: + datastore = json.load(f) + pool.map(run_analysis, datastore) + + +if __name__ == "__main__": + main() diff --git a/scripts/gen_compile_commands.py b/scripts/gen_compile_commands.py deleted file mode 100755 index c458696ef3a7..000000000000 --- a/scripts/gen_compile_commands.py +++ /dev/null @@ -1,151 +0,0 @@ -#!/usr/bin/env python -# SPDX-License-Identifier: GPL-2.0 -# -# Copyright (C) Google LLC, 2018 -# -# Author: Tom Roeder <tmroeder@google.com> -# -"""A tool for generating compile_commands.json in the Linux kernel.""" - -import argparse -import json -import logging -import os -import re - -_DEFAULT_OUTPUT = 'compile_commands.json' -_DEFAULT_LOG_LEVEL = 'WARNING' - -_FILENAME_PATTERN = r'^\..*\.cmd$' -_LINE_PATTERN = r'^cmd_[^ ]*\.o := (.* )([^ ]*\.c)$' -_VALID_LOG_LEVELS = ['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'] - -# A kernel build generally has over 2000 entries in its compile_commands.json -# database. If this code finds 300 or fewer, then warn the user that they might -# not have all the .cmd files, and they might need to compile the kernel. -_LOW_COUNT_THRESHOLD = 300 - - -def parse_arguments(): - """Sets up and parses command-line arguments. - - Returns: - log_level: A logging level to filter log output. - directory: The directory to search for .cmd files. - output: Where to write the compile-commands JSON file. - """ - usage = 'Creates a compile_commands.json database from kernel .cmd files' - parser = argparse.ArgumentParser(description=usage) - - directory_help = ('Path to the kernel source directory to search ' - '(defaults to the working directory)') - parser.add_argument('-d', '--directory', type=str, help=directory_help) - - output_help = ('The location to write compile_commands.json (defaults to ' - 'compile_commands.json in the search directory)') - parser.add_argument('-o', '--output', type=str, help=output_help) - - log_level_help = ('The level of log messages to produce (one of ' + - ', '.join(_VALID_LOG_LEVELS) + '; defaults to ' + - _DEFAULT_LOG_LEVEL + ')') - parser.add_argument( - '--log_level', type=str, default=_DEFAULT_LOG_LEVEL, - help=log_level_help) - - args = parser.parse_args() - - log_level = args.log_level - if log_level not in _VALID_LOG_LEVELS: - raise ValueError('%s is not a valid log level' % log_level) - - directory = args.directory or os.getcwd() - output = args.output or os.path.join(directory, _DEFAULT_OUTPUT) - directory = os.path.abspath(directory) - - return log_level, directory, output - - -def process_line(root_directory, file_directory, command_prefix, relative_path): - """Extracts information from a .cmd line and creates an entry from it. - - Args: - root_directory: The directory that was searched for .cmd files. Usually - used directly in the "directory" entry in compile_commands.json. - file_directory: The path to the directory the .cmd file was found in. - command_prefix: The extracted command line, up to the last element. - relative_path: The .c file from the end of the extracted command. - Usually relative to root_directory, but sometimes relative to - file_directory and sometimes neither. - - Returns: - An entry to append to compile_commands. - - Raises: - ValueError: Could not find the extracted file based on relative_path and - root_directory or file_directory. - """ - # The .cmd files are intended to be included directly by Make, so they - # escape the pound sign '#', either as '\#' or '$(pound)' (depending on the - # kernel version). The compile_commands.json file is not interepreted - # by Make, so this code replaces the escaped version with '#'. - prefix = command_prefix.replace('\#', '#').replace('$(pound)', '#') - - cur_dir = root_directory - expected_path = os.path.join(cur_dir, relative_path) - if not os.path.exists(expected_path): - # Try using file_directory instead. Some of the tools have a different - # style of .cmd file than the kernel. - cur_dir = file_directory - expected_path = os.path.join(cur_dir, relative_path) - if not os.path.exists(expected_path): - raise ValueError('File %s not in %s or %s' % - (relative_path, root_directory, file_directory)) - return { - 'directory': cur_dir, - 'file': relative_path, - 'command': prefix + relative_path, - } - - -def main(): - """Walks through the directory and finds and parses .cmd files.""" - log_level, directory, output = parse_arguments() - - level = getattr(logging, log_level) - logging.basicConfig(format='%(levelname)s: %(message)s', level=level) - - filename_matcher = re.compile(_FILENAME_PATTERN) - line_matcher = re.compile(_LINE_PATTERN) - - compile_commands = [] - for dirpath, _, filenames in os.walk(directory): - for filename in filenames: - if not filename_matcher.match(filename): - continue - filepath = os.path.join(dirpath, filename) - - with open(filepath, 'rt') as f: - for line in f: - result = line_matcher.match(line) - if not result: - continue - - try: - entry = process_line(directory, dirpath, - result.group(1), result.group(2)) - compile_commands.append(entry) - except ValueError as err: - logging.info('Could not add line from %s: %s', - filepath, err) - - with open(output, 'wt') as f: - json.dump(compile_commands, f, indent=2, sort_keys=True) - - count = len(compile_commands) - if count < _LOW_COUNT_THRESHOLD: - logging.warning( - 'Found %s entries. Have you compiled the kernel?', count) - - -if __name__ == '__main__': - main() diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile index 52b59bf9efe4..e46df0a2d4f9 100644 --- a/scripts/kconfig/Makefile +++ b/scripts/kconfig/Makefile @@ -20,19 +20,19 @@ endif unexport CONFIG_ xconfig: $(obj)/qconf - $< $(silent) $(Kconfig) + $(Q)$< $(silent) $(Kconfig) gconfig: $(obj)/gconf - $< $(silent) $(Kconfig) + $(Q)$< $(silent) $(Kconfig) menuconfig: $(obj)/mconf - $< $(silent) $(Kconfig) + $(Q)$< $(silent) $(Kconfig) config: $(obj)/conf - $< $(silent) --oldaskconfig $(Kconfig) + $(Q)$< $(silent) --oldaskconfig $(Kconfig) nconfig: $(obj)/nconf - $< $(silent) $(Kconfig) + $(Q)$< $(silent) $(Kconfig) build_menuconfig: $(obj)/mconf @@ -68,12 +68,12 @@ simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \ PHONY += $(simple-targets) $(simple-targets): $(obj)/conf - $< $(silent) --$@ $(Kconfig) + $(Q)$< $(silent) --$@ $(Kconfig) PHONY += savedefconfig defconfig savedefconfig: $(obj)/conf - $< $(silent) --$@=defconfig $(Kconfig) + $(Q)$< $(silent) --$@=defconfig $(Kconfig) defconfig: $(obj)/conf ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),) @@ -111,7 +111,7 @@ tinyconfig: # CHECK: -o cache_dir=<path> working? PHONY += testconfig testconfig: $(obj)/conf - $(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \ + $(Q)$(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \ -o cache_dir=$(abspath $(obj)/tests/.cache) \ $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no) clean-files += tests/.cache diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index dbde59d343b1..6eded325c837 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -169,10 +169,9 @@ gen_btf() printf '\1' | dd of=${2} conv=notrunc bs=1 seek=16 status=none } -# Create ${2} .o file with all symbols from the ${1} object file +# Create ${2} .S file with all symbols from the ${1} object file kallsyms() { - info KSYM ${2} local kallsymopt; if [ -n "${CONFIG_KALLSYMS_ALL}" ]; then @@ -187,13 +186,8 @@ kallsyms() kallsymopt="${kallsymopt} --base-relative" fi - local aflags="${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \ - ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS}" - - local afile="`basename ${2} .o`.S" - - ${NM} -n ${1} | scripts/kallsyms ${kallsymopt} > ${afile} - ${CC} ${aflags} -c -o ${2} ${afile} + info KSYMS ${2} + ${NM} -n ${1} | scripts/kallsyms ${kallsymopt} > ${2} } # Perform one step in kallsyms generation, including temporary linking of @@ -203,9 +197,15 @@ kallsyms_step() kallsymso_prev=${kallsymso} kallsyms_vmlinux=.tmp_vmlinux.kallsyms${1} kallsymso=${kallsyms_vmlinux}.o + kallsyms_S=${kallsyms_vmlinux}.S vmlinux_link ${kallsyms_vmlinux} "${kallsymso_prev}" ${btf_vmlinux_bin_o} - kallsyms ${kallsyms_vmlinux} ${kallsymso} + kallsyms ${kallsyms_vmlinux} ${kallsyms_S} + + info AS ${kallsyms_S} + ${CC} ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS} \ + ${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \ + -c -o ${kallsymso} ${kallsyms_S} } # Create map file with all symbols from ${1} diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h index baf3ab8d9d49..4ae735039daf 100755 --- a/scripts/mkcompile_h +++ b/scripts/mkcompile_h @@ -35,7 +35,7 @@ else LINUX_COMPILE_BY=$KBUILD_BUILD_USER fi if test -z "$KBUILD_BUILD_HOST"; then - LINUX_COMPILE_HOST=`hostname` + LINUX_COMPILE_HOST=`uname -n` else LINUX_COMPILE_HOST=$KBUILD_BUILD_HOST fi diff --git a/scripts/module-common.lds b/scripts/module.lds.S index d61b9e8678e8..69b9b71a6a47 100644 --- a/scripts/module-common.lds +++ b/scripts/module.lds.S @@ -24,3 +24,6 @@ SECTIONS { __jump_table 0 : ALIGN(8) { KEEP(*(__jump_table)) } } + +/* bring in arch-specific sections */ +#include <asm/module.lds.h> diff --git a/scripts/namespace.pl b/scripts/namespace.pl deleted file mode 100755 index 1da7bca201a4..000000000000 --- a/scripts/namespace.pl +++ /dev/null @@ -1,473 +0,0 @@ -#!/usr/bin/env perl -# -# namespace.pl. Mon Aug 30 2004 -# -# Perform a name space analysis on the linux kernel. -# -# Copyright Keith Owens <kaos@ocs.com.au>. GPL. -# -# Invoke by changing directory to the top of the kernel object -# tree then namespace.pl, no parameters. -# -# Tuned for 2.1.x kernels with the new module handling, it will -# work with 2.0 kernels as well. -# -# Last change 2.6.9-rc1, adding support for separate source and object -# trees. -# -# The source must be compiled/assembled first, the object files -# are the primary input to this script. Incomplete or missing -# objects will result in a flawed analysis. Compile both vmlinux -# and modules. -# -# Even with complete objects, treat the result of the analysis -# with caution. Some external references are only used by -# certain architectures, others with certain combinations of -# configuration parameters. Ideally the source should include -# something like -# -# #ifndef CONFIG_... -# static -# #endif -# symbol_definition; -# -# so the symbols are defined as static unless a particular -# CONFIG_... requires it to be external. -# -# A symbol that is suffixed with '(export only)' has these properties -# -# * It is global. -# * It is marked EXPORT_SYMBOL or EXPORT_SYMBOL_GPL, either in the same -# source file or a different source file. -# * Given the current .config, nothing uses the symbol. -# -# The symbol is a candidate for conversion to static, plus removal of the -# export. But be careful that a different .config might use the symbol. -# -# -# Name space analysis and cleanup is an iterative process. You cannot -# expect to find all the problems in a single pass. -# -# * Identify possibly unnecessary global declarations, verify that they -# really are unnecessary and change them to static. -# * Compile and fix up gcc warnings about static, removing dead symbols -# as necessary. -# * make clean and rebuild with different configs (especially -# CONFIG_MODULES=n) to see which symbols are being defined when the -# config does not require them. These symbols bloat the kernel object -# for no good reason, which is frustrating for embedded systems. -# * Wrap config sensitive symbols in #ifdef CONFIG_foo, as long as the -# code does not get too ugly. -# * Repeat the name space analysis until you can live with with the -# result. -# - -use warnings; -use strict; -use File::Find; -use File::Spec; - -my $nm = ($ENV{'NM'} || "nm") . " -p"; -my $objdump = ($ENV{'OBJDUMP'} || "objdump") . " -s -j .comment"; -my $srctree = File::Spec->curdir(); -my $objtree = File::Spec->curdir(); -$srctree = File::Spec->rel2abs($ENV{'srctree'}) if (exists($ENV{'srctree'})); -$objtree = File::Spec->rel2abs($ENV{'objtree'}) if (exists($ENV{'objtree'})); - -if ($#ARGV != -1) { - print STDERR "usage: $0 takes no parameters\n"; - die("giving up\n"); -} - -my %nmdata = (); # nm data for each object -my %def = (); # all definitions for each name -my %ksymtab = (); # names that appear in __ksymtab_ -my %ref = (); # $ref{$name} exists if there is a true external reference to $name -my %export = (); # $export{$name} exists if there is an EXPORT_... of $name - -my %nmexception = ( - 'fs/ext3/bitmap' => 1, - 'fs/ext4/bitmap' => 1, - 'arch/x86/lib/thunk_32' => 1, - 'arch/x86/lib/cmpxchg' => 1, - 'arch/x86/vdso/vdso32/note' => 1, - 'lib/irq_regs' => 1, - 'usr/initramfs_data' => 1, - 'drivers/scsi/aic94xx/aic94xx_dump' => 1, - 'drivers/scsi/libsas/sas_dump' => 1, - 'lib/dec_and_lock' => 1, - 'drivers/ide/ide-probe-mini' => 1, - 'usr/initramfs_data' => 1, - 'drivers/acpi/acpia/exdump' => 1, - 'drivers/acpi/acpia/rsdump' => 1, - 'drivers/acpi/acpia/nsdumpdv' => 1, - 'drivers/acpi/acpia/nsdump' => 1, - 'arch/ia64/sn/kernel/sn2/io' => 1, - 'arch/ia64/kernel/gate-data' => 1, - 'security/capability' => 1, - 'fs/ntfs/sysctl' => 1, - 'fs/jfs/jfs_debug' => 1, -); - -my %nameexception = ( - 'mod_use_count_' => 1, - '__initramfs_end' => 1, - '__initramfs_start' => 1, - '_einittext' => 1, - '_sinittext' => 1, - 'kallsyms_names' => 1, - 'kallsyms_num_syms' => 1, - 'kallsyms_addresses'=> 1, - 'kallsyms_offsets' => 1, - 'kallsyms_relative_base'=> 1, - '__this_module' => 1, - '_etext' => 1, - '_edata' => 1, - '_end' => 1, - '__bss_start' => 1, - '_text' => 1, - '_stext' => 1, - '__gp' => 1, - 'ia64_unw_start' => 1, - 'ia64_unw_end' => 1, - '__init_begin' => 1, - '__init_end' => 1, - '__bss_stop' => 1, - '__nosave_begin' => 1, - '__nosave_end' => 1, - 'pg0' => 1, - 'vdso_enabled' => 1, - '__stack_chk_fail' => 1, - 'VDSO32_PRELINK' => 1, - 'VDSO32_vsyscall' => 1, - 'VDSO32_rt_sigreturn'=>1, - 'VDSO32_sigreturn' => 1, -); - - -&find(\&linux_objects, '.'); # find the objects and do_nm on them -&list_multiply_defined(); -&resolve_external_references(); -&list_extra_externals(); - -exit(0); - -sub linux_objects -{ - # Select objects, ignoring objects which are only created by - # merging other objects. Also ignore all of modules, scripts - # and compressed. Most conglomerate objects are handled by do_nm, - # this list only contains the special cases. These include objects - # that are linked from just one other object and objects for which - # there is really no permanent source file. - my $basename = $_; - $_ = $File::Find::name; - s:^\./::; - if (/.*\.o$/ && - ! ( - m:/built-in.a$: - || m:arch/x86/vdso/: - || m:arch/x86/boot/: - || m:arch/ia64/ia32/ia32.o$: - || m:arch/ia64/kernel/gate-syms.o$: - || m:arch/ia64/lib/__divdi3.o$: - || m:arch/ia64/lib/__divsi3.o$: - || m:arch/ia64/lib/__moddi3.o$: - || m:arch/ia64/lib/__modsi3.o$: - || m:arch/ia64/lib/__udivdi3.o$: - || m:arch/ia64/lib/__udivsi3.o$: - || m:arch/ia64/lib/__umoddi3.o$: - || m:arch/ia64/lib/__umodsi3.o$: - || m:arch/ia64/scripts/check_gas_for_hint.o$: - || m:arch/ia64/sn/kernel/xp.o$: - || m:boot/bbootsect.o$: - || m:boot/bsetup.o$: - || m:/bootsect.o$: - || m:/boot/setup.o$: - || m:/compressed/: - || m:drivers/cdrom/driver.o$: - || m:drivers/char/drm/tdfx_drv.o$: - || m:drivers/ide/ide-detect.o$: - || m:drivers/ide/pci/idedriver-pci.o$: - || m:drivers/media/media.o$: - || m:drivers/scsi/sd_mod.o$: - || m:drivers/video/video.o$: - || m:fs/devpts/devpts.o$: - || m:fs/exportfs/exportfs.o$: - || m:fs/hugetlbfs/hugetlbfs.o$: - || m:fs/msdos/msdos.o$: - || m:fs/nls/nls.o$: - || m:fs/ramfs/ramfs.o$: - || m:fs/romfs/romfs.o$: - || m:fs/vfat/vfat.o$: - || m:init/mounts.o$: - || m:^modules/: - || m:net/netlink/netlink.o$: - || m:net/sched/sched.o$: - || m:/piggy.o$: - || m:^scripts/: - || m:sound/.*/snd-: - || m:^.*/\.tmp_: - || m:^\.tmp_: - || m:/vmlinux-obj.o$: - || m:^tools/: - ) - ) { - do_nm($basename, $_); - } - $_ = $basename; # File::Find expects $_ untouched (undocumented) -} - -sub do_nm -{ - my ($basename, $fullname) = @_; - my ($source, $type, $name); - if (! -e $basename) { - printf STDERR "$basename does not exist\n"; - return; - } - if ($fullname !~ /\.o$/) { - printf STDERR "$fullname is not an object file\n"; - return; - } - ($source = $basename) =~ s/\.o$//; - if (-e "$source.c" || -e "$source.S") { - $source = File::Spec->catfile($objtree, $File::Find::dir, $source) - } else { - $source = File::Spec->catfile($srctree, $File::Find::dir, $source) - } - if (! -e "$source.c" && ! -e "$source.S") { - # No obvious source, exclude the object if it is conglomerate - open(my $objdumpdata, "$objdump $basename|") - or die "$objdump $fullname failed $!\n"; - - my $comment; - while (<$objdumpdata>) { - chomp(); - if (/^In archive/) { - # Archives are always conglomerate - $comment = "GCC:GCC:"; - last; - } - next if (! /^[ 0-9a-f]{5,} /); - $comment .= substr($_, 43); - } - close($objdumpdata); - - if (!defined($comment) || $comment !~ /GCC\:.*GCC\:/m) { - printf STDERR "No source file found for $fullname\n"; - } - return; - } - open (my $nmdata, "$nm $basename|") - or die "$nm $fullname failed $!\n"; - - my @nmdata; - while (<$nmdata>) { - chop; - ($type, $name) = (split(/ +/, $_, 3))[1..2]; - # Expected types - # A absolute symbol - # B weak external reference to data that has been resolved - # C global variable, uninitialised - # D global variable, initialised - # G global variable, initialised, small data section - # R global array, initialised - # S global variable, uninitialised, small bss - # T global label/procedure - # U external reference - # W weak external reference to text that has been resolved - # V similar to W, but the value of the weak symbol becomes zero with no error. - # a assembler equate - # b static variable, uninitialised - # d static variable, initialised - # g static variable, initialised, small data section - # r static array, initialised - # s static variable, uninitialised, small bss - # t static label/procedures - # w weak external reference to text that has not been resolved - # v similar to w - # ? undefined type, used a lot by modules - if ($type !~ /^[ABCDGRSTUWVabdgrstwv?]$/) { - printf STDERR "nm output for $fullname contains unknown type '$_'\n"; - } - elsif ($name =~ /\./) { - # name with '.' is local static - } - else { - $type = 'R' if ($type eq '?'); # binutils replaced ? with R at one point - # binutils keeps changing the type for exported symbols, force it to R - $type = 'R' if ($name =~ /^__ksymtab/ || $name =~ /^__kstrtab/); - $name =~ s/_R[a-f0-9]{8}$//; # module versions adds this - if ($type =~ /[ABCDGRSTWV]/ && - $name ne 'init_module' && - $name ne 'cleanup_module' && - $name ne 'Using_Versions' && - $name !~ /^Version_[0-9]+$/ && - $name !~ /^__parm_/ && - $name !~ /^__kstrtab/ && - $name !~ /^__ksymtab/ && - $name !~ /^__kcrctab_/ && - $name !~ /^__exitcall_/ && - $name !~ /^__initcall_/ && - $name !~ /^__kdb_initcall_/ && - $name !~ /^__kdb_exitcall_/ && - $name !~ /^__module_/ && - $name !~ /^__mod_/ && - $name !~ /^__crc_/ && - $name ne '__this_module' && - $name ne 'kernel_version') { - if (!exists($def{$name})) { - $def{$name} = []; - } - push(@{$def{$name}}, $fullname); - } - push(@nmdata, "$type $name"); - if ($name =~ /^__ksymtab_/) { - $name = substr($name, 10); - if (!exists($ksymtab{$name})) { - $ksymtab{$name} = []; - } - push(@{$ksymtab{$name}}, $fullname); - } - } - } - close($nmdata); - - if ($#nmdata < 0) { - printf "No nm data for $fullname\n" - unless $nmexception{$fullname}; - return; - } - $nmdata{$fullname} = \@nmdata; -} - -sub drop_def -{ - my ($object, $name) = @_; - my $nmdata = $nmdata{$object}; - my ($i, $j); - for ($i = 0; $i <= $#{$nmdata}; ++$i) { - if ($name eq (split(' ', $nmdata->[$i], 2))[1]) { - splice(@{$nmdata{$object}}, $i, 1); - my $def = $def{$name}; - for ($j = 0; $j < $#{$def{$name}}; ++$j) { - if ($def{$name}[$j] eq $object) { - splice(@{$def{$name}}, $j, 1); - } - } - last; - } - } -} - -sub list_multiply_defined -{ - foreach my $name (keys(%def)) { - if ($#{$def{$name}} > 0) { - # Special case for cond_syscall - if ($#{$def{$name}} == 1 && - ($name =~ /^sys_/ || $name =~ /^compat_sys_/ || - $name =~ /^sys32_/)) { - if($def{$name}[0] eq "kernel/sys_ni.o" || - $def{$name}[1] eq "kernel/sys_ni.o") { - &drop_def("kernel/sys_ni.o", $name); - next; - } - } - - printf "$name is multiply defined in :-\n"; - foreach my $module (@{$def{$name}}) { - printf "\t$module\n"; - } - } - } -} - -sub resolve_external_references -{ - my ($kstrtab, $ksymtab, $export); - - printf "\n"; - foreach my $object (keys(%nmdata)) { - my $nmdata = $nmdata{$object}; - for (my $i = 0; $i <= $#{$nmdata}; ++$i) { - my ($type, $name) = split(' ', $nmdata->[$i], 2); - if ($type eq "U" || $type eq "w") { - if (exists($def{$name}) || exists($ksymtab{$name})) { - # add the owning object to the nmdata - $nmdata->[$i] = "$type $name $object"; - # only count as a reference if it is not EXPORT_... - $kstrtab = "R __kstrtab_$name"; - $ksymtab = "R __ksymtab_$name"; - $export = 0; - for (my $j = 0; $j <= $#{$nmdata}; ++$j) { - if ($nmdata->[$j] eq $kstrtab || - $nmdata->[$j] eq $ksymtab) { - $export = 1; - last; - } - } - if ($export) { - $export{$name} = ""; - } - else { - $ref{$name} = "" - } - } - elsif ( ! $nameexception{$name} - && $name !~ /^__sched_text_/ - && $name !~ /^__start_/ - && $name !~ /^__end_/ - && $name !~ /^__stop_/ - && $name !~ /^__scheduling_functions_.*_here/ - && $name !~ /^__.*initcall_/ - && $name !~ /^__.*per_cpu_start/ - && $name !~ /^__.*per_cpu_end/ - && $name !~ /^__alt_instructions/ - && $name !~ /^__setup_/ - && $name !~ /^__mod_timer/ - && $name !~ /^__mod_page_state/ - && $name !~ /^init_module/ - && $name !~ /^cleanup_module/ - ) { - printf "Cannot resolve "; - printf "weak " if ($type eq "w"); - printf "reference to $name from $object\n"; - } - } - } - } -} - -sub list_extra_externals -{ - my %noref = (); - - foreach my $name (keys(%def)) { - if (! exists($ref{$name})) { - my @module = @{$def{$name}}; - foreach my $module (@module) { - if (! exists($noref{$module})) { - $noref{$module} = []; - } - push(@{$noref{$module}}, $name); - } - } - } - if (%noref) { - printf "\nExternally defined symbols with no external references\n"; - foreach my $module (sort(keys(%noref))) { - printf " $module\n"; - foreach (sort(@{$noref{$module}})) { - my $export; - if (exists($export{$_})) { - $export = " (export only)"; - } else { - $export = ""; - } - printf " $_$export\n"; - } - } - } -} diff --git a/scripts/package/builddeb b/scripts/package/builddeb index 6df3c9f8b2da..1b11f8993629 100755 --- a/scripts/package/builddeb +++ b/scripts/package/builddeb @@ -26,24 +26,29 @@ if_enabled_echo() { create_package() { local pname="$1" pdir="$2" + local dpkg_deb_opts mkdir -m 755 -p "$pdir/DEBIAN" mkdir -p "$pdir/usr/share/doc/$pname" cp debian/copyright "$pdir/usr/share/doc/$pname/" cp debian/changelog "$pdir/usr/share/doc/$pname/changelog.Debian" - gzip -9 "$pdir/usr/share/doc/$pname/changelog.Debian" + gzip -n -9 "$pdir/usr/share/doc/$pname/changelog.Debian" sh -c "cd '$pdir'; find . -type f ! -path './DEBIAN/*' -printf '%P\0' \ | xargs -r0 md5sum > DEBIAN/md5sums" # Fix ownership and permissions - chown -R root:root "$pdir" + if [ "$DEB_RULES_REQUIRES_ROOT" = "no" ]; then + dpkg_deb_opts="--root-owner-group" + else + chown -R root:root "$pdir" + fi chmod -R go-w "$pdir" # in case we are in a restrictive umask environment like 0077 chmod -R a+rX "$pdir" # Create the package dpkg-gencontrol -p$pname -P"$pdir" - dpkg-deb ${KDEB_COMPRESS:+-Z$KDEB_COMPRESS} --build "$pdir" .. + dpkg-deb $dpkg_deb_opts ${KDEB_COMPRESS:+-Z$KDEB_COMPRESS} --build "$pdir" .. } deploy_kernel_headers () { @@ -55,7 +60,7 @@ deploy_kernel_headers () { cd $srctree find . arch/$SRCARCH -maxdepth 1 -name Makefile\* find include scripts -type f -o -type l - find arch/$SRCARCH -name module.lds -o -name Kbuild.platforms -o -name Platform + find arch/$SRCARCH -name Kbuild.platforms -o -name Platform find $(find arch/$SRCARCH -name include -o -name scripts -type d) -type f ) > debian/hdrsrcfiles @@ -202,8 +207,10 @@ EOF done if [ "$ARCH" != "um" ]; then - deploy_kernel_headers debian/linux-headers - create_package linux-headers-$version debian/linux-headers + if is_enabled CONFIG_MODULES; then + deploy_kernel_headers debian/linux-headers + create_package linux-headers-$version debian/linux-headers + fi deploy_libc_headers debian/linux-libc-dev create_package linux-libc-dev debian/linux-libc-dev diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian index 48fbd3d0284a..60a2a63a5e90 100755 --- a/scripts/package/mkdebian +++ b/scripts/package/mkdebian @@ -94,16 +94,16 @@ else packageversion=$version-$revision fi sourcename=$KDEB_SOURCENAME -packagename=linux-image-$version -kernel_headers_packagename=linux-headers-$version -dbg_packagename=$packagename-dbg -debarch= -set_debarch if [ "$ARCH" = "um" ] ; then - packagename=user-mode-linux-$version + packagename=user-mode-linux +else + packagename=linux-image fi +debarch= +set_debarch + email=${DEBEMAIL-$EMAIL} # use email string directly if it contains <email> @@ -174,22 +174,16 @@ Source: $sourcename Section: kernel Priority: optional Maintainer: $maintainer +Rules-Requires-Root: no Build-Depends: bc, rsync, kmod, cpio, bison, flex | flex:native $extra_build_depends Homepage: https://www.kernel.org/ -Package: $packagename +Package: $packagename-$version Architecture: $debarch Description: Linux kernel, version $version This package contains the Linux kernel, modules and corresponding other files, version: $version. -Package: $kernel_headers_packagename -Architecture: $debarch -Description: Linux kernel headers for $version on $debarch - This package provides kernel header files for $version on $debarch - . - This is useful for people who need to build external modules - Package: linux-libc-dev Section: devel Provides: linux-kernel-headers @@ -200,10 +194,22 @@ Description: Linux support headers for userspace development Multi-Arch: same EOF +if is_enabled CONFIG_MODULES; then +cat <<EOF >> debian/control + +Package: linux-headers-$version +Architecture: $debarch +Description: Linux kernel headers for $version on $debarch + This package provides kernel header files for $version on $debarch + . + This is useful for people who need to build external modules +EOF +fi + if is_enabled CONFIG_DEBUG_INFO; then cat <<EOF >> debian/control -Package: $dbg_packagename +Package: linux-image-$version-dbg Section: debug Architecture: $debarch Description: Linux kernel debugging symbols for $version @@ -217,11 +223,15 @@ cat <<EOF > debian/rules srctree ?= . -build: +build-indep: +build-arch: \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \ KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile -binary-arch: +build: build-arch + +binary-indep: +binary-arch: build-arch \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \ KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile intdeb-pkg diff --git a/scripts/setlocalversion b/scripts/setlocalversion index 20f2efd57b11..bb709eda96cd 100755 --- a/scripts/setlocalversion +++ b/scripts/setlocalversion @@ -45,7 +45,7 @@ scm_version() # Check for git and a git repo. if test -z "$(git rev-parse --show-cdup 2>/dev/null)" && - head=$(git rev-parse --verify --short HEAD 2>/dev/null); then + head=$(git rev-parse --verify HEAD 2>/dev/null); then # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore # it, because this version is defined in the top level Makefile. @@ -59,11 +59,22 @@ scm_version() fi # If we are past a tagged commit (like # "v2.6.30-rc5-302-g72357d5"), we pretty print it. - if atag="$(git describe 2>/dev/null)"; then - echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}' - - # If we don't have a tag at all we print -g{commitish}. + # + # Ensure the abbreviated sha1 has exactly 12 + # hex characters, to make the output + # independent of git version, local + # core.abbrev settings and/or total number of + # objects in the current repository - passing + # --abbrev=12 ensures a minimum of 12, and the + # awk substr() then picks the 'g' and first 12 + # hex chars. + if atag="$(git describe --abbrev=12 2>/dev/null)"; then + echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),substr($(NF),0,13))}' + + # If we don't have a tag at all we print -g{commitish}, + # again using exactly 12 hex chars. else + head="$(echo $head | cut -c1-12)" printf '%s%s' -g $head fi fi |