1*4882a593Smuzhiyun# 2*4882a593Smuzhiyun# Small script that refreshes the kernel feature support status in place. 3*4882a593Smuzhiyun# 4*4882a593Smuzhiyun 5*4882a593Smuzhiyunfor F_FILE in Documentation/features/*/*/arch-support.txt; do 6*4882a593Smuzhiyun F=$(grep "^# Kconfig:" "$F_FILE" | cut -c26-) 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun # 9*4882a593Smuzhiyun # Each feature F is identified by a pair (O, K), where 'O' can 10*4882a593Smuzhiyun # be either the empty string (for 'nop') or "not" (the logical 11*4882a593Smuzhiyun # negation operator '!'); other operators are not supported. 12*4882a593Smuzhiyun # 13*4882a593Smuzhiyun O="" 14*4882a593Smuzhiyun K=$F 15*4882a593Smuzhiyun if [[ "$F" == !* ]]; then 16*4882a593Smuzhiyun O="not" 17*4882a593Smuzhiyun K=$(echo $F | sed -e 's/^!//g') 18*4882a593Smuzhiyun fi 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun # 21*4882a593Smuzhiyun # F := (O, K) is 'valid' iff there is a Kconfig file (for some 22*4882a593Smuzhiyun # arch) which contains K. 23*4882a593Smuzhiyun # 24*4882a593Smuzhiyun # Notice that this definition entails an 'asymmetry' between 25*4882a593Smuzhiyun # the case 'O = ""' and the case 'O = "not"'. E.g., F may be 26*4882a593Smuzhiyun # _invalid_ if: 27*4882a593Smuzhiyun # 28*4882a593Smuzhiyun # [case 'O = ""'] 29*4882a593Smuzhiyun # 1) no arch provides support for F, 30*4882a593Smuzhiyun # 2) K does not exist (e.g., it was renamed/mis-typed); 31*4882a593Smuzhiyun # 32*4882a593Smuzhiyun # [case 'O = "not"'] 33*4882a593Smuzhiyun # 3) all archs provide support for F, 34*4882a593Smuzhiyun # 4) as in (2). 35*4882a593Smuzhiyun # 36*4882a593Smuzhiyun # The rationale for adopting this definition (and, thus, for 37*4882a593Smuzhiyun # keeping the asymmetry) is: 38*4882a593Smuzhiyun # 39*4882a593Smuzhiyun # We want to be able to 'detect' (2) (or (4)). 40*4882a593Smuzhiyun # 41*4882a593Smuzhiyun # (1) and (3) may further warn the developers about the fact 42*4882a593Smuzhiyun # that K can be removed. 43*4882a593Smuzhiyun # 44*4882a593Smuzhiyun F_VALID="false" 45*4882a593Smuzhiyun for ARCH_DIR in arch/*/; do 46*4882a593Smuzhiyun K_FILES=$(find $ARCH_DIR -name "Kconfig*") 47*4882a593Smuzhiyun K_GREP=$(grep "$K" $K_FILES) 48*4882a593Smuzhiyun if [ ! -z "$K_GREP" ]; then 49*4882a593Smuzhiyun F_VALID="true" 50*4882a593Smuzhiyun break 51*4882a593Smuzhiyun fi 52*4882a593Smuzhiyun done 53*4882a593Smuzhiyun if [ "$F_VALID" = "false" ]; then 54*4882a593Smuzhiyun printf "WARNING: '%s' is not a valid Kconfig\n" "$F" 55*4882a593Smuzhiyun fi 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun T_FILE="$F_FILE.tmp" 58*4882a593Smuzhiyun grep "^#" $F_FILE > $T_FILE 59*4882a593Smuzhiyun echo " -----------------------" >> $T_FILE 60*4882a593Smuzhiyun echo " | arch |status|" >> $T_FILE 61*4882a593Smuzhiyun echo " -----------------------" >> $T_FILE 62*4882a593Smuzhiyun for ARCH_DIR in arch/*/; do 63*4882a593Smuzhiyun ARCH=$(echo $ARCH_DIR | sed -e 's/arch//g' | sed -e 's/\///g') 64*4882a593Smuzhiyun K_FILES=$(find $ARCH_DIR -name "Kconfig*") 65*4882a593Smuzhiyun K_GREP=$(grep "$K" $K_FILES) 66*4882a593Smuzhiyun # 67*4882a593Smuzhiyun # Arch support status values for (O, K) are updated according 68*4882a593Smuzhiyun # to the following rules. 69*4882a593Smuzhiyun # 70*4882a593Smuzhiyun # - ("", K) is 'supported by a given arch', if there is a 71*4882a593Smuzhiyun # Kconfig file for that arch which contains K; 72*4882a593Smuzhiyun # 73*4882a593Smuzhiyun # - ("not", K) is 'supported by a given arch', if there is 74*4882a593Smuzhiyun # no Kconfig file for that arch which contains K; 75*4882a593Smuzhiyun # 76*4882a593Smuzhiyun # - otherwise: preserve the previous status value (if any), 77*4882a593Smuzhiyun # default to 'not yet supported'. 78*4882a593Smuzhiyun # 79*4882a593Smuzhiyun # Notice that, according these rules, invalid features may be 80*4882a593Smuzhiyun # updated/modified. 81*4882a593Smuzhiyun # 82*4882a593Smuzhiyun if [ "$O" = "" ] && [ ! -z "$K_GREP" ]; then 83*4882a593Smuzhiyun printf " |%12s: | ok |\n" "$ARCH" >> $T_FILE 84*4882a593Smuzhiyun elif [ "$O" = "not" ] && [ -z "$K_GREP" ]; then 85*4882a593Smuzhiyun printf " |%12s: | ok |\n" "$ARCH" >> $T_FILE 86*4882a593Smuzhiyun else 87*4882a593Smuzhiyun S=$(grep -v "^#" "$F_FILE" | grep " $ARCH:") 88*4882a593Smuzhiyun if [ ! -z "$S" ]; then 89*4882a593Smuzhiyun echo "$S" >> $T_FILE 90*4882a593Smuzhiyun else 91*4882a593Smuzhiyun printf " |%12s: | TODO |\n" "$ARCH" \ 92*4882a593Smuzhiyun >> $T_FILE 93*4882a593Smuzhiyun fi 94*4882a593Smuzhiyun fi 95*4882a593Smuzhiyun done 96*4882a593Smuzhiyun echo " -----------------------" >> $T_FILE 97*4882a593Smuzhiyun mv $T_FILE $F_FILE 98*4882a593Smuzhiyundone 99