1# 2# Small script that refreshes the kernel feature support status in place. 3# 4 5for F_FILE in Documentation/features/*/*/arch-support.txt; do 6 F=$(grep "^# Kconfig:" "$F_FILE" | cut -c26-) 7 8 # 9 # Each feature F is identified by a pair (O, K), where 'O' can 10 # be either the empty string (for 'nop') or "not" (the logical 11 # negation operator '!'); other operators are not supported. 12 # 13 O="" 14 K=$F 15 if [[ "$F" == !* ]]; then 16 O="not" 17 K=$(echo $F | sed -e 's/^!//g') 18 fi 19 20 # 21 # F := (O, K) is 'valid' iff there is a Kconfig file (for some 22 # arch) which contains K. 23 # 24 # Notice that this definition entails an 'asymmetry' between 25 # the case 'O = ""' and the case 'O = "not"'. E.g., F may be 26 # _invalid_ if: 27 # 28 # [case 'O = ""'] 29 # 1) no arch provides support for F, 30 # 2) K does not exist (e.g., it was renamed/mis-typed); 31 # 32 # [case 'O = "not"'] 33 # 3) all archs provide support for F, 34 # 4) as in (2). 35 # 36 # The rationale for adopting this definition (and, thus, for 37 # keeping the asymmetry) is: 38 # 39 # We want to be able to 'detect' (2) (or (4)). 40 # 41 # (1) and (3) may further warn the developers about the fact 42 # that K can be removed. 43 # 44 F_VALID="false" 45 for ARCH_DIR in arch/*/; do 46 K_FILES=$(find $ARCH_DIR -name "Kconfig*") 47 K_GREP=$(grep "$K" $K_FILES) 48 if [ ! -z "$K_GREP" ]; then 49 F_VALID="true" 50 break 51 fi 52 done 53 if [ "$F_VALID" = "false" ]; then 54 printf "WARNING: '%s' is not a valid Kconfig\n" "$F" 55 fi 56 57 T_FILE="$F_FILE.tmp" 58 grep "^#" $F_FILE > $T_FILE 59 echo " -----------------------" >> $T_FILE 60 echo " | arch |status|" >> $T_FILE 61 echo " -----------------------" >> $T_FILE 62 for ARCH_DIR in arch/*/; do 63 ARCH=$(echo $ARCH_DIR | sed -e 's/^arch//g' | sed -e 's/\///g') 64 K_FILES=$(find $ARCH_DIR -name "Kconfig*") 65 K_GREP=$(grep "$K" $K_FILES) 66 # 67 # Arch support status values for (O, K) are updated according 68 # to the following rules. 69 # 70 # - ("", K) is 'supported by a given arch', if there is a 71 # Kconfig file for that arch which contains K; 72 # 73 # - ("not", K) is 'supported by a given arch', if there is 74 # no Kconfig file for that arch which contains K; 75 # 76 # - otherwise: preserve the previous status value (if any), 77 # default to 'not yet supported'. 78 # 79 # Notice that, according these rules, invalid features may be 80 # updated/modified. 81 # 82 if [ "$O" = "" ] && [ ! -z "$K_GREP" ]; then 83 printf " |%12s: | ok |\n" "$ARCH" >> $T_FILE 84 elif [ "$O" = "not" ] && [ -z "$K_GREP" ]; then 85 printf " |%12s: | ok |\n" "$ARCH" >> $T_FILE 86 else 87 S=$(grep -v "^#" "$F_FILE" | grep " $ARCH:") 88 if [ ! -z "$S" ]; then 89 echo "$S" >> $T_FILE 90 else 91 printf " |%12s: | TODO |\n" "$ARCH" \ 92 >> $T_FILE 93 fi 94 fi 95 done 96 echo " -----------------------" >> $T_FILE 97 mv $T_FILE $F_FILE 98done 99