ꦫꦣꦺꦤ꧀ꦄꦤ꧀ꦠꦱꦺꦤ

PATH: usr / src / linux-headers-5.4.0-216 / scripts

#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-only

# Script to create/update include/generated/autoksyms.h and dependency files
#
# Copyright:	(C) 2016  Linaro Limited
# Created by:	Nicolas Pitre, January 2016
#

# Create/update the include/generated/autoksyms.h file from the list
# of all module's needed symbols as recorded on the second line of *.mod files.
#
# For each symbol being added or removed, the corresponding dependency
# file's timestamp is updated to force a rebuild of the affected source
# file. All arguments passed to this script are assumed to be a command
# to be exec'd to trigger a rebuild of those files.

set -e

cur_ksyms_file="include/generated/autoksyms.h"
new_ksyms_file="include/generated/autoksyms.h.tmpnew"

info() {
	if [ "$quiet" != "silent_" ]; then
		printf "  %-7s %s\n" "$1" "$2"
	fi
}

info "CHK" "$cur_ksyms_file"

# Use "make V=1" to debug this script.
case "$KBUILD_VERBOSE" in
*1*)
	set -x
	;;
esac

# We need access to CONFIG_ symbols
. include/config/auto.conf

# Generate a new ksym list file with symbols needed by the current
# set of modules.
cat > "$new_ksyms_file" << EOT
/*
 * Automatically generated file; DO NOT EDIT.
 */

EOT
sed 's/ko$/mod/' modules.order |
xargs -n1 sed -n -e '2{s/ /\n/g;/^$/!p;}' -- |
sort -u |
sed -e 's/$.*$/#define __KSYM_\1 1/' >> "$new_ksyms_file"

# Special case for modversions (see modpost.c)
if [ -n "$CONFIG_MODVERSIONS" ]; then
	echo "#define __KSYM_module_layout 1" >> "$new_ksyms_file"
fi

# Extract changes between old and new list and touch corresponding
# dependency files.
changed=$(
count=0
sort "$cur_ksyms_file" "$new_ksyms_file" | uniq -u |
sed -n 's/^#define __KSYM_$.*$ 1/\1/p' | tr "A-Z_" "a-z/" |
while read sympath; do
	if [ -z "$sympath" ]; then continue; fi
	depfile="include/ksym/${sympath}.h"
	mkdir -p "$(dirname "$depfile")"
	touch "$depfile"
	# Filesystems with coarse time precision may create timestamps
	# equal to the one from a file that was very recently built and that
	# needs to be rebuild. Let's guard against that by making sure our
	# dep files are always newer than the first file we created here.
	while [ ! "$depfile" -nt "$new_ksyms_file" ]; do
		touch "$depfile"
	done
	echo $((count += 1))
done | tail -1 )
changed=${changed:-0}

if [ $changed -gt 0 ]; then
	# Replace the old list with tne new one
	old=$(grep -c "^#define __KSYM_" "$cur_ksyms_file" || true)
	new=$(grep -c "^#define __KSYM_" "$new_ksyms_file" || true)
	info "KSYMS" "symbols: before=$old, after=$new, changed=$changed"
	info "UPD" "$cur_ksyms_file"
	mv -f "$new_ksyms_file" "$cur_ksyms_file"
	# Then trigger a rebuild of affected source files
	exec $@
else
	rm -f "$new_ksyms_file"
fi

[+] ..
[-] ld-version.sh [edit]
[+] package
[-] stackusage [edit]
[-] pnmtologo.c [edit]
[-] gcc-plugin.sh [edit]
[-] setlocalversion [edit]
[-] stackdelta [edit]
[-] checkkconfigsymbols.py [edit]
[-] extract-cert.c [edit]
[-] extract-sys-certs.pl [edit]
[-] unifdef.c [edit]
[-] Makefile.extrawarn [edit]
[-] Makefile.kcov [edit]
[-] .gitignore [edit]
[-] documentation-file-ref-check [edit]
[-] parse-maintainers.pl [edit]
[-] Makefile.ubsan [edit]
[+] atomic
[-] checksyscalls.sh [edit]
[-] spdxcheck-test.sh [edit]
[-] recordmcount.h [edit]
[-] mkuboot.sh [edit]
[-] kallsyms.c [edit]
[-] link-vmlinux.sh [edit]
[-] sortextable.h [edit]
[-] show_delta [edit]
[-] Makefile.gcc-plugins [edit]
[-] ver_linux [edit]
[-] leaking_addresses.pl [edit]
[-] subarch.include [edit]
[-] check_extable.sh [edit]
[-] gcc-ld [edit]
[-] diffconfig [edit]
[-] bpf_helpers_doc.py [edit]
[-] decode_stacktrace.sh [edit]
[-] split-man.pl [edit]
[-] makelst [edit]
[-] mkcompile_h [edit]
[-] module-common.lds [edit]
[-] kmsg-doc [edit]
[-] Makefile [edit]
[-] Makefile.modbuiltin [edit]
[-] gcc-goto.sh [edit]
[-] mksysmap [edit]
[-] modules-check.sh [edit]
[-] nsdeps [edit]
[-] gcc-x86_64-has-stack-protector.sh [edit]
[-] ubuntu-retpoline-extract-one [edit]
[-] gen_compile_commands.py [edit]
[-] find-unused-docs.sh [edit]
[-] coccicheck [edit]
[-] gfp-translate [edit]
[-] Makefile.kasan [edit]
[-] config [edit]
[-] adjust_autoksyms.sh [edit]
[-] asn1_compiler.c [edit]
[+] mod
[-] cc-can-link.sh [edit]
[+] selinux
[-] checkpatch.pl [edit]
[+] coccinelle
[-] Makefile.modfinal [edit]
[-] headers_check.pl [edit]
[-] recordmcount.c [edit]
[-] sphinx-pre-install [edit]
[-] Makefile.modsign [edit]
[-] headers_install.sh [edit]
[-] patch-kernel [edit]
[-] xz_wrap.sh [edit]
[+] dtc
[+] basic
[+] tracing
[-] headerdep.pl [edit]
[-] const_structs.checkpatch [edit]
[-] extract_xc3028.pl [edit]
[-] tags.sh [edit]
[-] get_dvb_firmware [edit]
[-] Makefile.build [edit]
[-] clang-version.sh [edit]
[-] tools-support-relr.sh [edit]
[-] gcc-x86_32-has-stack-protector.sh [edit]
[-] bootgraph.pl [edit]
[-] gen_ksymdeps.sh [edit]
[-] Makefile.clean [edit]
[-] spdxcheck.py [edit]
[-] decodecode [edit]
[-] insert-sys-cert.c [edit]
[-] extract-module-sig.pl [edit]
[+] gdb
[-] sortextable.c [edit]
[-] prune-kernel [edit]
[+] kconfig
[-] cleanfile [edit]
[-] namespace.pl [edit]
[-] checkincludes.pl [edit]
[-] faddr2line [edit]
[-] checkstack.pl [edit]
[-] mkmakefile [edit]
[-] Makefile.lib [edit]
[+] ksymoops
[-] profile2linkerlist.pl [edit]
[-] gcc-version.sh [edit]
[-] Makefile.modpost [edit]
[-] recordmcount.pl [edit]
[-] extract-ikconfig [edit]
[-] bloat-o-meter [edit]
[-] Makefile.dtbinst [edit]
[-] kernel-doc [edit]
[-] Lindent [edit]
[+] gcc-plugins
[-] cleanpatch [edit]
[-] bin2c.c [edit]
[-] xen-hypercalls.sh [edit]
[-] markup_oops.pl [edit]
[-] checkversion.pl [edit]
[-] conmakehash.c [edit]
[-] Makefile.headersinst [edit]
[-] export_report.pl [edit]
[+] genksyms
[-] get_abi.pl [edit]
[-] Makefile.asm-generic [edit]
[-] objdiff [edit]
[-] sign-file.c [edit]
[-] depmod.sh [edit]
[-] file-size.sh [edit]
[-] Makefile.modinst [edit]
[-] Kconfig.include [edit]
[-] Makefile.host [edit]
[-] extract-vmlinux [edit]
[-] get_maintainer.pl [edit]
[-] Makefile.package [edit]
[-] spelling.txt [edit]
[-] Kbuild.include [edit]