| # |
| # Small script that refreshes the kernel feature support status in place. |
| # |
| |
| for F_FILE in Documentation/features/*/*/arch-support.txt; do |
| F=$(grep "^# Kconfig:" "$F_FILE" | cut -c26-) |
| |
| # |
| # Each feature F is identified by a pair (O, K), where 'O' can |
| # be either the empty string (for 'nop') or "not" (the logical |
| # negation operator '!'); other operators are not supported. |
| # |
| O="" |
| K=$F |
| if [[ "$F" == !* ]]; then |
| O="not" |
| K=$(echo $F | sed -e 's/^!//g') |
| fi |
| |
| # |
| # F := (O, K) is 'valid' iff there is a Kconfig file (for some |
| # arch) which contains K. |
| # |
| # Notice that this definition entails an 'asymmetry' between |
| # the case 'O = ""' and the case 'O = "not"'. E.g., F may be |
| # _invalid_ if: |
| # |
| # [case 'O = ""'] |
| # 1) no arch provides support for F, |
| # 2) K does not exist (e.g., it was renamed/mis-typed); |
| # |
| # [case 'O = "not"'] |
| # 3) all archs provide support for F, |
| # 4) as in (2). |
| # |
| # The rationale for adopting this definition (and, thus, for |
| # keeping the asymmetry) is: |
| # |
| # We want to be able to 'detect' (2) (or (4)). |
| # |
| # (1) and (3) may further warn the developers about the fact |
| # that K can be removed. |
| # |
| F_VALID="false" |
| for ARCH_DIR in arch/*/; do |
| K_FILES=$(find $ARCH_DIR -name "Kconfig*") |
| K_GREP=$(grep "$K" $K_FILES) |
| if [ ! -z "$K_GREP" ]; then |
| F_VALID="true" |
| break |
| fi |
| done |
| if [ "$F_VALID" = "false" ]; then |
| printf "WARNING: '%s' is not a valid Kconfig\n" "$F" |
| fi |
| |
| T_FILE="$F_FILE.tmp" |
| grep "^#" $F_FILE > $T_FILE |
| echo " -----------------------" >> $T_FILE |
| echo " | arch |status|" >> $T_FILE |
| echo " -----------------------" >> $T_FILE |
| for ARCH_DIR in arch/*/; do |
| ARCH=$(echo $ARCH_DIR | sed -e 's/arch//g' | sed -e 's/\///g') |
| K_FILES=$(find $ARCH_DIR -name "Kconfig*") |
| K_GREP=$(grep "$K" $K_FILES) |
| # |
| # Arch support status values for (O, K) are updated according |
| # to the following rules. |
| # |
| # - ("", K) is 'supported by a given arch', if there is a |
| # Kconfig file for that arch which contains K; |
| # |
| # - ("not", K) is 'supported by a given arch', if there is |
| # no Kconfig file for that arch which contains K; |
| # |
| # - otherwise: preserve the previous status value (if any), |
| # default to 'not yet supported'. |
| # |
| # Notice that, according these rules, invalid features may be |
| # updated/modified. |
| # |
| if [ "$O" = "" ] && [ ! -z "$K_GREP" ]; then |
| printf " |%12s: | ok |\n" "$ARCH" >> $T_FILE |
| elif [ "$O" = "not" ] && [ -z "$K_GREP" ]; then |
| printf " |%12s: | ok |\n" "$ARCH" >> $T_FILE |
| else |
| S=$(grep -v "^#" "$F_FILE" | grep " $ARCH:") |
| if [ ! -z "$S" ]; then |
| echo "$S" >> $T_FILE |
| else |
| printf " |%12s: | TODO |\n" "$ARCH" \ |
| >> $T_FILE |
| fi |
| fi |
| done |
| echo " -----------------------" >> $T_FILE |
| mv $T_FILE $F_FILE |
| done |