23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 1) #!/bin/sh
d2912cb15bdda (Thomas Gleixner 2019-06-04 10:11:33 +0200 2) # SPDX-License-Identifier: GPL-2.0-only
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 3)
cd195bc4775a5 (Quentin Perret 2020-02-28 17:20:14 +0000 4) # Script to update include/generated/autoksyms.h and dependency files
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 5) #
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 6) # Copyright: (C) 2016 Linaro Limited
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 7) # Created by: Nicolas Pitre, January 2016
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 8) #
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 9)
cd195bc4775a5 (Quentin Perret 2020-02-28 17:20:14 +0000 10) # Update the include/generated/autoksyms.h file.
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 11) #
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 12) # For each symbol being added or removed, the corresponding dependency
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 13) # file's timestamp is updated to force a rebuild of the affected source
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 14) # file. All arguments passed to this script are assumed to be a command
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 15) # to be exec'd to trigger a rebuild of those files.
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 16)
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 17) set -e
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 18)
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 19) cur_ksyms_file="include/generated/autoksyms.h"
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 20) new_ksyms_file="include/generated/autoksyms.h.tmpnew"
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 21)
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 22) info() {
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 23) if [ "$quiet" != "silent_" ]; then
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 24) printf " %-7s %s\n" "$1" "$2"
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 25) fi
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 26) }
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 27)
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 28) info "CHK" "$cur_ksyms_file"
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 29)
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 30) # Use "make V=1" to debug this script.
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 31) case "$KBUILD_VERBOSE" in
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 32) *1*)
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 33) set -x
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 34) ;;
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 35) esac
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 36)
cd195bc4775a5 (Quentin Perret 2020-02-28 17:20:14 +0000 37) # Generate a new symbol list file
cd195bc4775a5 (Quentin Perret 2020-02-28 17:20:14 +0000 38) $CONFIG_SHELL $srctree/scripts/gen_autoksyms.sh "$new_ksyms_file"
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 39)
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 40) # Extract changes between old and new list and touch corresponding
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 41) # dependency files.
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 42) changed=$(
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 43) count=0
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 44) sort "$cur_ksyms_file" "$new_ksyms_file" | uniq -u |
bc7cd2dd1f8e5 (Masahiro Yamada 2021-08-30 17:20:33 +0900 45) sed -n 's/^#define __KSYM_\(.*\) 1/\1/p' |
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 46) while read sympath; do
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 47) if [ -z "$sympath" ]; then continue; fi
bc7cd2dd1f8e5 (Masahiro Yamada 2021-08-30 17:20:33 +0900 48) depfile="include/ksym/${sympath}"
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 49) mkdir -p "$(dirname "$depfile")"
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 50) touch "$depfile"
825d487583089 (Nicolas Pitre 2018-03-15 16:56:20 -0400 51) # Filesystems with coarse time precision may create timestamps
825d487583089 (Nicolas Pitre 2018-03-15 16:56:20 -0400 52) # equal to the one from a file that was very recently built and that
825d487583089 (Nicolas Pitre 2018-03-15 16:56:20 -0400 53) # needs to be rebuild. Let's guard against that by making sure our
825d487583089 (Nicolas Pitre 2018-03-15 16:56:20 -0400 54) # dep files are always newer than the first file we created here.
825d487583089 (Nicolas Pitre 2018-03-15 16:56:20 -0400 55) while [ ! "$depfile" -nt "$new_ksyms_file" ]; do
825d487583089 (Nicolas Pitre 2018-03-15 16:56:20 -0400 56) touch "$depfile"
825d487583089 (Nicolas Pitre 2018-03-15 16:56:20 -0400 57) done
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 58) echo $((count += 1))
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 59) done | tail -1 )
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 60) changed=${changed:-0}
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 61)
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 62) if [ $changed -gt 0 ]; then
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 63) # Replace the old list with tne new one
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 64) old=$(grep -c "^#define __KSYM_" "$cur_ksyms_file" || true)
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 65) new=$(grep -c "^#define __KSYM_" "$new_ksyms_file" || true)
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 66) info "KSYMS" "symbols: before=$old, after=$new, changed=$changed"
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 67) info "UPD" "$cur_ksyms_file"
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 68) mv -f "$new_ksyms_file" "$cur_ksyms_file"
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 69) # Then trigger a rebuild of affected source files
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 70) exec $@
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 71) else
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 72) rm -f "$new_ksyms_file"
23121ca2b56b5 (Nicolas Pitre 2016-01-26 21:50:18 -0500 73) fi
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