feat(linter): explain why options are unnecessary

_in_container_build.sh

@@ -39,6 +39,60 @@ get_cc() {
     echo "/opt/cross/${arch}-linux-musl${abi}/bin/${arch}-linux-musl${abi}-"
 }
 
+get_all_options() {
+    local linux_dir="$1"
+    local arch="$2"
+    local temp_dir=$(mktemp -d)
+
+    # Generate allnoconfig
+    make -C "$linux_dir" ARCH=$arch O="$temp_dir" allnoconfig >/dev/null 2>&1
+
+    # Generate allmodconfig
+    make -C "$linux_dir" ARCH=$arch O="$temp_dir" allmodconfig >/dev/null 2>&1
+
+    # Extract all CONFIG_ lines, remove comments and empty lines
+    grep '^CONFIG_' "$temp_dir/.config" | sed 's/=.*$//' | sort -u
+
+    # Clean up
+    rm -rf "$temp_dir"
+}
+
+lint_config() {
+    local config_file="$1"
+    local defconfig_file="$2"
+    local arch="$3"
+    local linux_dir="$4"
+
+    # Get the list of all possible config options
+    all_options=$(get_all_options "$linux_dir" "$arch")
+
+
+    # Generate a full default config
+    make -C "$linux_dir" ARCH=$arch defconfig >/dev/null 2>&1
+    local full_defconfig="$linux_dir/.config"
+
+    # Compare the .config and defconfig files
+    diff -u <(sort "$config_file") <(sort "$defconfig_file" | sed '/^[ #]/d') | while read -r line; do
+        if [[ $line == -CONFIG_* ]]; then
+            option=${line#-}
+            option=${option%=y}  # Remove the '=y' suffix
+            if grep -q "^$option=" "$full_defconfig"; then
+                echo "ON BY DEFAULT for $arch: $option"
+            elif ! echo "$all_options" | grep -q "^$option$"; then
+                echo "INVALID OPTION: $option"
+            else
+                echo "MISSING DEPENDENCY: $option"
+            fi
+        fi
+    done | sort
+
+    echo $all_options > /app/all.txt
+
+
+    # Clean up
+    rm -f "$full_defconfig"
+}
+
 for VERSION in $VERSIONS; do
 for TARGET in $TARGETS; do
     BUILD_TARGETS="vmlinux"
@@ -67,15 +121,22 @@ for TARGET in $TARGETS; do
 
 
     # If updating configs, lint them with kernel first! This removes default options and duplicates.
+    build_dir="/tmp/build/${VERSION}/${TARGET}"
+    linux_dir="/app/linux/$VERSION"
+
     if $CONFIG_ONLY; then
       echo "Linting config for $TARGET to config_${VERSION}_${TARGET}.linted"
-      make -C /app/linux/$VERSION ARCH=${short_arch} CROSS_COMPILE=$(get_cc $TARGET) O=/tmp/build/${VERSION}/${TARGET}/ savedefconfig
-      cp "/tmp/build/${VERSION}/${TARGET}/defconfig" "/app/config_${VERSION}_${TARGET}.linted"
-      diff -u <(sort /tmp/build/${VERSION}/${TARGET}/.config) <(sort /tmp/build/${VERSION}/${TARGET}/defconfig | sed '/^[ #]/d')
+
+      # Generate the .config and defconfig files
+      make -C "$linux_dir" ARCH="$short_arch" CROSS_COMPILE="$(get_cc $TARGET)" O="$build_dir" savedefconfig
+
+      # Perform the linting
+      lint_config "$build_dir/.config" "$build_dir/defconfig" "$short_arch" "$linux_dir" > "/app/config_${VERSION}_${TARGET}.linted"
+
     else
       echo "Building kernel for $TARGET"
-      make -C /app/linux/$VERSION ARCH=${short_arch} CROSS_COMPILE=$(get_cc $TARGET) O=/tmp/build/${VERSION}/${TARGET}/ olddefconfig
-      make -C /app/linux/$VERSION ARCH=${short_arch} CROSS_COMPILE=$(get_cc $TARGET) O=/tmp/build/${VERSION}/${TARGET}/ $BUILD_TARGETS -j$(nproc)
+      make -C $BUILD_DIR ARCH=${short_arch} CROSS_COMPILE=$(get_cc $TARGET) O=/tmp/build/${VERSION}/${TARGET}/ olddefconfig
+      make -C $BUILD_DIR ARCH=${short_arch} CROSS_COMPILE=$(get_cc $TARGET) O=/tmp/build/${VERSION}/${TARGET}/ $BUILD_TARGETS -j$(nproc)
 
       mkdir -p /kernels/$VERSION
 

configs/4.10/all-common.inc

@@ -1,9 +1,3 @@
-CONFIG_NETLINK_DIAG=y
-CONFIG_IKCONFIG_PROC=y
-CONFIG_TASKSTATS=y
-
-
-
 CONFIG_9P_FS=y
 CONFIG_9P_FS_POSIX_ACL=y
 CONFIG_AFFS_FS=y
@@ -90,6 +84,7 @@ CONFIG_HIDRAW=y
 CONFIG_HID_PID=y
 CONFIG_HPFS_FS=y
 CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
 CONFIG_INET6_AH=y
 CONFIG_INET6_ESP=y
 CONFIG_INET=y
@@ -103,6 +98,7 @@ CONFIG_IP6_NF_NAT=y
 CONFIG_IP6_NF_RAW=y
 CONFIG_IPV6_MIP6=y
 CONFIG_IPV6_MROUTE=y
+CONFIG_IPV6_MULTIPLE_TABLES=y
 CONFIG_IPV6_PIMSM_V2=y
 CONFIG_IPV6_ROUTER_PREF=y
 CONFIG_IPV6_SIT_6RD=y
@@ -111,13 +107,16 @@ CONFIG_IP_ADVANCED_ROUTER=y
 CONFIG_IP_MROUTE=y
 CONFIG_IP_MULTICAST=y
 CONFIG_IP_MULTIPLE_TABLES=y
+
 CONFIG_IP_NF_ARPFILTER=y
-CONFIG_IP_NF_ARPTABLES=y
 CONFIG_IP_NF_ARP_MANGLE=y
+CONFIG_IP_NF_ARPTABLES=y
 CONFIG_IP_NF_FILTER=y
 CONFIG_IP_NF_IPTABLES=y
 CONFIG_IP_NF_MANGLE=y
+CONFIG_IP_NF_MATCH_AH=y
 CONFIG_IP_NF_MATCH_ECN=y
+CONFIG_IP_NF_MATCH_RPFILTER=y
 CONFIG_IP_NF_MATCH_TTL=y
 CONFIG_IP_NF_NAT=y
 CONFIG_IP_NF_RAW=y
@@ -127,6 +126,7 @@ CONFIG_IP_NF_TARGET_NETMAP=y
 CONFIG_IP_NF_TARGET_REDIRECT=y
 CONFIG_IP_NF_TARGET_REJECT=y
 CONFIG_IP_NF_TARGET_TTL=y
+
 CONFIG_IP_PIMSM_V1=y
 CONFIG_IP_PIMSM_V2=y
 CONFIG_IP_PNP=y
@@ -169,63 +169,120 @@ CONFIG_NAMESPACES=y
 CONFIG_NCP_FS=y
 CONFIG_NET=y
 CONFIG_NETDEVICES=y
+
 CONFIG_NETFILTER=y
+CONFIG_NETFILTER_ADVANCED=y
+CONFIG_NETFILTER_DEBUG=y
+CONFIG_NETFILTER_INGRESS=y
+CONFIG_NETFILTER_NETLINK=y
+CONFIG_NETFILTER_NETLINK_ACCT=y
+CONFIG_NETFILTER_NETLINK_GLUE_CT=y
+CONFIG_NETFILTER_NETLINK_LOG=y
+CONFIG_NETFILTER_NETLINK_QUEUE=y
+CONFIG_NETFILTER_SYNPROXY=y
+CONFIG_NETFILTER_TPROXY=y
+CONFIG_NETFILTER_XTABLES=y
+CONFIG_NETFILTER_XT_CONNMARK=y
+CONFIG_NETFILTER_XT_MARK=y
+CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=y
+CONFIG_NETFILTER_XT_MATCH_BPF=y
+CONFIG_NETFILTER_XT_MATCH_CGROUP=y
+CONFIG_NETFILTER_XT_MATCH_CLUSTER=y
 CONFIG_NETFILTER_XT_MATCH_COMMENT=y
 CONFIG_NETFILTER_XT_MATCH_CONNBYTES=y
+CONFIG_NETFILTER_XT_MATCH_CONNLABEL=y
 CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=y
 CONFIG_NETFILTER_XT_MATCH_CONNMARK=y
 CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y
+CONFIG_NETFILTER_XT_MATCH_CPU=y
 CONFIG_NETFILTER_XT_MATCH_DCCP=y
+CONFIG_NETFILTER_XT_MATCH_DEVGROUP=y
+CONFIG_NETFILTER_XT_MATCH_DSCP=y
+CONFIG_NETFILTER_XT_MATCH_ECN=y
 CONFIG_NETFILTER_XT_MATCH_ESP=y
 CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=y
 CONFIG_NETFILTER_XT_MATCH_HELPER=y
+CONFIG_NETFILTER_XT_MATCH_HL=y
+CONFIG_NETFILTER_XT_MATCH_IPCOMP=y
 CONFIG_NETFILTER_XT_MATCH_IPRANGE=y
+CONFIG_NETFILTER_XT_MATCH_IPVS=y
+CONFIG_NETFILTER_XT_MATCH_L2TP=y
 CONFIG_NETFILTER_XT_MATCH_LENGTH=y
 CONFIG_NETFILTER_XT_MATCH_LIMIT=y
 CONFIG_NETFILTER_XT_MATCH_MAC=y
 CONFIG_NETFILTER_XT_MATCH_MARK=y
 CONFIG_NETFILTER_XT_MATCH_MULTIPORT=y
+CONFIG_NETFILTER_XT_MATCH_NFACCT=y
+CONFIG_NETFILTER_XT_MATCH_OSF=y
 CONFIG_NETFILTER_XT_MATCH_OWNER=y
+CONFIG_NETFILTER_XT_MATCH_PHYSDEV=y
 CONFIG_NETFILTER_XT_MATCH_PKTTYPE=y
 CONFIG_NETFILTER_XT_MATCH_POLICY=y
 CONFIG_NETFILTER_XT_MATCH_QUOTA=y
 CONFIG_NETFILTER_XT_MATCH_RATEEST=y
 CONFIG_NETFILTER_XT_MATCH_REALM=y
 CONFIG_NETFILTER_XT_MATCH_RECENT=y
 CONFIG_NETFILTER_XT_MATCH_SCTP=y
+CONFIG_NETFILTER_XT_MATCH_SOCKET=y
 CONFIG_NETFILTER_XT_MATCH_STATE=y
 CONFIG_NETFILTER_XT_MATCH_STATISTIC=y
 CONFIG_NETFILTER_XT_MATCH_STRING=y
 CONFIG_NETFILTER_XT_MATCH_TCPMSS=y
 CONFIG_NETFILTER_XT_MATCH_TIME=y
 CONFIG_NETFILTER_XT_MATCH_U32=y
+CONFIG_NETFILTER_XT_NAT=y
 CONFIG_NETFILTER_XT_SET=y
+CONFIG_NETFILTER_XT_TARGET_AUDIT=y
+CONFIG_NETFILTER_XT_TARGET_CHECKSUM=y
 CONFIG_NETFILTER_XT_TARGET_CLASSIFY=y
 CONFIG_NETFILTER_XT_TARGET_CONNMARK=y
+CONFIG_NETFILTER_XT_TARGET_CONNSECMARK=y
+CONFIG_NETFILTER_XT_TARGET_CT=y
+CONFIG_NETFILTER_XT_TARGET_DSCP=y
+CONFIG_NETFILTER_XT_TARGET_HL=y
+CONFIG_NETFILTER_XT_TARGET_HMARK=y
+CONFIG_NETFILTER_XT_TARGET_IDLETIMER=y
+CONFIG_NETFILTER_XT_TARGET_LED=y
+CONFIG_NETFILTER_XT_TARGET_LOG=y
 CONFIG_NETFILTER_XT_TARGET_MARK=y
+CONFIG_NETFILTER_XT_TARGET_NETMAP=y
 CONFIG_NETFILTER_XT_TARGET_NFLOG=y
 CONFIG_NETFILTER_XT_TARGET_NFQUEUE=y
 CONFIG_NETFILTER_XT_TARGET_NOTRACK=y
+CONFIG_NETFILTER_XT_TARGET_RATEEST=y
+CONFIG_NETFILTER_XT_TARGET_REDIRECT=y
+CONFIG_NETFILTER_XT_TARGET_SECMARK=y
 CONFIG_NETFILTER_XT_TARGET_TCPMSS=y
 CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP=y
+CONFIG_NETFILTER_XT_TARGET_TEE=y
 CONFIG_NETFILTER_XT_TARGET_TPROXY=y
 CONFIG_NETFILTER_XT_TARGET_TRACE=y
+CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE=y
+
+
+CONFIG_NETLINK_DIAG=y
 CONFIG_NET_9P=y
 CONFIG_NET_9P_DEBUG=y
 CONFIG_NET_9P_VIRTIO=y
+CONFIG_NET_ACT_MPLS=y
 CONFIG_NET_CLS_ACT=y
 CONFIG_NET_IPIP=y
+CONFIG_NET_IPV6=y
+CONFIG_NET_MLPS_GSO=y
 CONFIG_NET_MPLS_GSO=y
+CONFIG_NET_NS=y
 CONFIG_NET_SCHED=y
 CONFIG_NFS_FS=y
 CONFIG_NF_CONNTRACK=y
 CONFIG_NF_CONNTRACK_FTP=y
 CONFIG_NF_CONNTRACK_IPV4=y
 CONFIG_NF_CONNTRACK_IPV6=y
 CONFIG_NF_CONNTRACK_NETBIOS_NS=y
+CONFIG_NF_CONNTRACK_PROCFS=y
 CONFIG_NF_CONNTRACK_SNMP=y
 CONFIG_NF_CONNTRACK_TFTP=y
 CONFIG_NF_CT_NETLINK=y
+CONFIG_NF_DEFRAG_IPV6=y
 CONFIG_NF_NAT_MASQUERADE_IPV6=y
 CONFIG_NILFS2_FS=y
 CONFIG_NLS_CODEPAGE_437=y
@@ -241,13 +298,16 @@ CONFIG_ORANGEFS_FS=y
 CONFIG_OVERLAY_FS=y
 CONFIG_PACKET=y
 CONFIG_PARTITION_ADVANCED=y
+CONFIG_PID_NS=y
 CONFIG_POSIX_MQUEUE=y
 CONFIG_PPP=y
 CONFIG_PPPOE=y
 CONFIG_PPP_DEFLATE=y
 CONFIG_PPP_FILTER=y
 CONFIG_PPP_MPPE=y
 CONFIG_PRINTK_TIME=y
+CONFIG_PROC_DEVICETREE=y
+CONFIG_PROC_SYSCTL=y
 CONFIG_PSTORE=y
 CONFIG_QNX4FS_FS=y
 CONFIG_QNX6FS_FS=y
@@ -257,17 +317,18 @@ CONFIG_ROMFS_FS=y
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_INTF_DEV_UIE_EMUL=y
 CONFIG_SECURITY=y
+CONFIG_SECURITYFS=y
 CONFIG_SECURITY_NETWORK_XFRM=y
 CONFIG_SECURITY_SELINUX=y
 CONFIG_SECURITY_SELINUX_BOOTPARAM=y
 CONFIG_SECURITY_SELINUX_DISABLE=y
 CONFIG_SECURITY_SMACK=y
-CONFIG_SECURITYFS=y
 CONFIG_SLAB=y
 CONFIG_SQUASHFS=y
 CONFIG_SYN_COOKIES=y
 CONFIG_SYSVIPC=y
 CONFIG_SYSV_FS=y
+CONFIG_TASKSTATS=y
 CONFIG_TMPFS=y
 CONFIG_TUN=y
 CONFIG_UDF_FS=y
@@ -276,6 +337,7 @@ CONFIG_UNIX=y
 CONFIG_USB=y
 CONFIG_USB_DYNAMIC_MINORS=y
 CONFIG_USB_HIDDEV=y
+CONFIG_UTS_NS=y
 CONFIG_VFAT_FS=y
 CONFIG_VIRTIO_BALLOON=y
 CONFIG_VIRTIO_BLK=y
@@ -288,4 +350,4 @@ CONFIG_VLAN_8021Q=y
 CONFIG_VSOCKETS=y
 CONFIG_VXFS_FS=y
 CONFIG_XFRM_USER=y
-CONFIG_ZISOFS=y
+CONFIG_ZISOFS=y

configs/4.10/arm-common.inc

@@ -46,3 +46,12 @@ CONFIG_SYSCTL_SYSCALL=y
 CONFIG_USELIB=y
 CONFIG_USER_NS=y
 CONFIG_VIRTIO_CONSOLE=y
+
+CONFIG_IP_NF_ARPFILTER=y
+CONFIG_IP_NF_ARP_MANGLE=y
+CONFIG_IP_NF_CONNTRACK=y
+CONFIG_IP_NF_CT_ACCT=y
+CONFIG_IP_NF_CT_PROTO_SCTP=y
+CONFIG_IP_NF_MATCH_ADDRTYPE=y
+CONFIG_IP_NF_QUEUE=y
+CONFIG_IP_NF_TARGET_LOG=y

configs/4.10/mips-common.inc

@@ -53,3 +53,13 @@ CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_EHCI_ROOT_HUB_TT=y
 CONFIG_USB_OHCI_HCD=y
 CONFIG_USELIB=y
+
+CONFIG_MII=y
+CONFIG_IP_NF_ARPFILTER=y
+CONFIG_IP_NF_ARP_MANGLE=y
+CONFIG_IP_NF_CONNTRACK=y
+CONFIG_IP_NF_CT_ACCT=y
+CONFIG_IP_NF_CT_PROTO_SCTP=y
+CONFIG_IP_NF_MATCH_ADDRTYPE=y
+CONFIG_IP_NF_QUEUE=y
+CONFIG_IP_NF_TARGET_LOG=y