Commit cd195bc4 authored by Quentin Perret's avatar Quentin Perret Committed by Masahiro Yamada

kbuild: split adjust_autoksyms.sh in two parts

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: default avatarNicolas Pitre <nico@fluxnic.net>
Tested-by: default avatarMatthias Maennich <maennich@google.com>
Reviewed-by: default avatarMatthias Maennich <maennich@google.com>
Signed-off-by: default avatarQuentin Perret <qperret@google.com>
Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
parent 1518c633
#!/bin/sh #!/bin/sh
# SPDX-License-Identifier: GPL-2.0-only # SPDX-License-Identifier: GPL-2.0-only
# Script to create/update include/generated/autoksyms.h and dependency files # Script to update include/generated/autoksyms.h and dependency files
# #
# Copyright: (C) 2016 Linaro Limited # Copyright: (C) 2016 Linaro Limited
# Created by: Nicolas Pitre, January 2016 # Created by: Nicolas Pitre, January 2016
# #
# Create/update the include/generated/autoksyms.h file from the list # Update the include/generated/autoksyms.h file.
# 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 # For each symbol being added or removed, the corresponding dependency
# file's timestamp is updated to force a rebuild of the affected source # file's timestamp is updated to force a rebuild of the affected source
...@@ -38,35 +37,8 @@ esac ...@@ -38,35 +37,8 @@ esac
# We need access to CONFIG_ symbols # We need access to CONFIG_ symbols
. include/config/auto.conf . include/config/auto.conf
ksym_wl=/dev/null # Generate a new symbol list file
if [ -n "$CONFIG_UNUSED_KSYMS_WHITELIST" ]; then $CONFIG_SHELL $srctree/scripts/gen_autoksyms.sh "$new_ksyms_file"
# Use 'eval' to expand the whitelist path and check if it is relative
eval ksym_wl="$CONFIG_UNUSED_KSYMS_WHITELIST"
[ "${ksym_wl}" != "${ksym_wl#/}" ] || ksym_wl="$abs_srctree/$ksym_wl"
if [ ! -f "$ksym_wl" ] || [ ! -r "$ksym_wl" ]; then
echo "ERROR: '$ksym_wl' whitelist file not found" >&2
exit 1
fi
fi
# 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;/^$/!p;}' -- |
cat - "$ksym_wl" |
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 # Extract changes between old and new list and touch corresponding
# dependency files. # dependency files.
......
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-only
# Create an autoksyms.h header file from the list of all module's needed symbols
# as recorded on the second line of *.mod files and the user-provided symbol
# whitelist.
set -e
output_file="$1"
# Use "make V=1" to debug this script.
case "$KBUILD_VERBOSE" in
*1*)
set -x
;;
esac
# We need access to CONFIG_ symbols
. include/config/auto.conf
ksym_wl=/dev/null
if [ -n "$CONFIG_UNUSED_KSYMS_WHITELIST" ]; then
# Use 'eval' to expand the whitelist path and check if it is relative
eval ksym_wl="$CONFIG_UNUSED_KSYMS_WHITELIST"
[ "${ksym_wl}" != "${ksym_wl#/}" ] || ksym_wl="$abs_srctree/$ksym_wl"
if [ ! -f "$ksym_wl" ] || [ ! -r "$ksym_wl" ]; then
echo "ERROR: '$ksym_wl' whitelist file not found" >&2
exit 1
fi
fi
# Generate a new ksym list file with symbols needed by the current
# set of modules.
cat > "$output_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;}' -- |
cat - "$ksym_wl" |
sort -u |
sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$output_file"
# Special case for modversions (see modpost.c)
if [ -n "$CONFIG_MODVERSIONS" ]; then
echo "#define __KSYM_module_layout 1" >> "$output_file"
fi
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment