forked from luck/tmp_suning_uos_patched
cd195bc477
In order to prepare the ground for a build-time optimization, split adjust_autoksyms.sh into two scripts: one that generates autoksyms.h based on all currently available information (whitelist, and .mod files), and the other to inspect the diff between two versions of autoksyms.h and trigger appropriate rebuilds. Acked-by: Nicolas Pitre <nico@fluxnic.net> Tested-by: Matthias Maennich <maennich@google.com> Reviewed-by: Matthias Maennich <maennich@google.com> Signed-off-by: Quentin Perret <qperret@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
52 lines
1.2 KiB
Bash
Executable File
52 lines
1.2 KiB
Bash
Executable File
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0-only
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# Create an autoksyms.h header file from the list of all module's needed symbols
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# as recorded on the second line of *.mod files and the user-provided symbol
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# whitelist.
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set -e
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output_file="$1"
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# Use "make V=1" to debug this script.
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case "$KBUILD_VERBOSE" in
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*1*)
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set -x
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;;
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esac
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# We need access to CONFIG_ symbols
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. include/config/auto.conf
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ksym_wl=/dev/null
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if [ -n "$CONFIG_UNUSED_KSYMS_WHITELIST" ]; then
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# Use 'eval' to expand the whitelist path and check if it is relative
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eval ksym_wl="$CONFIG_UNUSED_KSYMS_WHITELIST"
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[ "${ksym_wl}" != "${ksym_wl#/}" ] || ksym_wl="$abs_srctree/$ksym_wl"
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if [ ! -f "$ksym_wl" ] || [ ! -r "$ksym_wl" ]; then
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echo "ERROR: '$ksym_wl' whitelist file not found" >&2
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exit 1
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fi
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fi
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# Generate a new ksym list file with symbols needed by the current
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# set of modules.
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cat > "$output_file" << EOT
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/*
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* Automatically generated file; DO NOT EDIT.
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*/
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EOT
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sed 's/ko$/mod/' modules.order |
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xargs -n1 sed -n -e '2{s/ /\n/g;/^$/!p;}' -- |
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cat - "$ksym_wl" |
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sort -u |
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sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$output_file"
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# Special case for modversions (see modpost.c)
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if [ -n "$CONFIG_MODVERSIONS" ]; then
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echo "#define __KSYM_module_layout 1" >> "$output_file"
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fi
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