| page.title=Android Kernel Configuration |
| @jd:body |
| |
| <!-- |
| Copyright 2010 The Android Open Source Project |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| --> |
| <p>The kernel configuration settings in this document are meant to be used as a base for an Android kernel configuration. All devices should have the options in android-base configuration enabled. While not mandatory, the options in android-recommended configuration enable advanced Android |
| features.</p> |
| |
| <p> |
| Generating kernel config: Assuming you already have a minimalist defconfig for your device, a possible |
| way to enable these options would be:</p> |
| |
| <pre>ARCH=<arch> scripts/kconfig/merge_config.sh <path_to>/<device>_defconfig android/configs/android-base.cfg |
| android/configs/android-recommended.cfg</pre> |
| <p> |
| This will generate a .config that can then be used to save a new defconfig or |
| compile a new kernel with Android features enabled. |
| </p> |
| <h3> |
| Base Configuration |
| </h3> |
| <pre> |
| CONFIG_EXPERIMENTAL=y |
| CONFIG_SYSVIPC=y |
| CONFIG_CGROUPS=y |
| CONFIG_CGROUP_DEBUG=y |
| CONFIG_CGROUP_FREEZER=y |
| CONFIG_CGROUP_CPUACCT=y |
| CONFIG_RESOURCE_COUNTERS=y |
| CONFIG_CGROUP_SCHED=y |
| CONFIG_RT_GROUP_SCHED=y |
| CONFIG_BLK_DEV_INITRD=y |
| CONFIG_EMBEDDED=y |
| CONFIG_NO_HZ=y |
| CONFIG_HIGH_RES_TIMERS=y |
| CONFIG_PREEMPT=y |
| CONFIG_PM_AUTOSLEEP=y |
| CONFIG_PM_WAKELOCKS=y |
| CONFIG_BLK_DEV_DM=y |
| CONFIG_DM_CRYPT=y |
| CONFIG_NET=y |
| CONFIG_PACKET=y |
| CONFIG_UNIX=y |
| CONFIG_XFRM_USER=y |
| CONFIG_NET_KEY=y |
| CONFIG_INET=y |
| CONFIG_IP_ADVANCED_ROUTER=y |
| CONFIG_IP_MULTIPLE_TABLES=y |
| CONFIG_INET_ESP=y |
| # CONFIG_INET_LRO is not set |
| CONFIG_IPV6_PRIVACY=y |
| CONFIG_IPV6_ROUTER_PREF=y |
| CONFIG_IPV6_OPTIMISTIC_DAD=y |
| CONFIG_INET6_AH=y |
| CONFIG_INET6_ESP=y |
| CONFIG_INET6_IPCOMP=y |
| CONFIG_IPV6_MIP6=y |
| CONFIG_IPV6_MULTIPLE_TABLES=y |
| CONFIG_NETFILTER=y |
| CONFIG_NF_CONNTRACK=y |
| CONFIG_NF_CONNTRACK_EVENTS=y |
| CONFIG_NF_CT_PROTO_DCCP=y |
| CONFIG_NF_CT_PROTO_SCTP=y |
| CONFIG_NF_CT_PROTO_UDPLITE=y |
| CONFIG_NF_CONNTRACK_AMANDA=y |
| CONFIG_NF_CONNTRACK_FTP=y |
| CONFIG_NF_CONNTRACK_H323=y |
| CONFIG_NF_CONNTRACK_IRC=y |
| CONFIG_NF_CONNTRACK_NETBIOS_NS=y |
| CONFIG_NF_CONNTRACK_PPTP=y |
| CONFIG_NF_CONNTRACK_SANE=y |
| CONFIG_NF_CONNTRACK_TFTP=y |
| CONFIG_NF_CT_NETLINK=y |
| CONFIG_NETFILTER_TPROXY=y |
| CONFIG_NETFILTER_XT_TARGET_CLASSIFY=y |
| CONFIG_NETFILTER_XT_TARGET_CONNMARK=y |
| CONFIG_NETFILTER_XT_TARGET_MARK=y |
| CONFIG_NETFILTER_XT_TARGET_NFLOG=y |
| CONFIG_NETFILTER_XT_TARGET_NFQUEUE=y |
| CONFIG_NETFILTER_XT_TARGET_TPROXY=y |
| CONFIG_NETFILTER_XT_TARGET_TRACE=y |
| CONFIG_NETFILTER_XT_MATCH_COMMENT=y |
| CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=y |
| CONFIG_NETFILTER_XT_MATCH_CONNMARK=y |
| CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y |
| CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=y |
| CONFIG_NETFILTER_XT_MATCH_HELPER=y |
| CONFIG_NETFILTER_XT_MATCH_IPRANGE=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_POLICY=y |
| CONFIG_NETFILTER_XT_MATCH_PKTTYPE=y |
| CONFIG_NETFILTER_XT_MATCH_QTAGUID=y |
| CONFIG_NETFILTER_XT_MATCH_QUOTA=y |
| CONFIG_NETFILTER_XT_MATCH_QUOTA2=y |
| CONFIG_NETFILTER_XT_MATCH_QUOTA2_LOG=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_TIME=y |
| CONFIG_NETFILTER_XT_MATCH_U32=y |
| CONFIG_NF_CONNTRACK_IPV4=y |
| CONFIG_IP_NF_IPTABLES=y |
| CONFIG_IP_NF_MATCH_AH=y |
| CONFIG_IP_NF_MATCH_ECN=y |
| CONFIG_IP_NF_MATCH_TTL=y |
| CONFIG_IP_NF_FILTER=y |
| CONFIG_IP_NF_TARGET_REJECT=y |
| CONFIG_IP_NF_TARGET_REJECT_SKERR=y |
| CONFIG_NF_NAT=y |
| CONFIG_IP_NF_TARGET_MASQUERADE=y |
| CONFIG_IP_NF_TARGET_NETMAP=y |
| CONFIG_IP_NF_TARGET_REDIRECT=y |
| CONFIG_IP_NF_MANGLE=y |
| CONFIG_IP_NF_RAW=y |
| CONFIG_IP_NF_ARPTABLES=y |
| CONFIG_IP_NF_ARPFILTER=y |
| CONFIG_IP_NF_ARP_MANGLE=y |
| CONFIG_NF_CONNTRACK_IPV6=y |
| CONFIG_IP6_NF_IPTABLES=y |
| CONFIG_IP6_NF_FILTER=y |
| CONFIG_IP6_NF_TARGET_REJECT=y |
| CONFIG_IP6_NF_TARGET_REJECT_SKERR=y |
| CONFIG_IP6_NF_MANGLE=y |
| CONFIG_IP6_NF_RAW=y |
| CONFIG_NET_SCHED=y |
| CONFIG_NET_SCH_HTB=y |
| CONFIG_NET_CLS_U32=y |
| CONFIG_NET_EMATCH=y |
| CONFIG_NET_EMATCH_U32=y |
| CONFIG_NET_CLS_ACT=y |
| CONFIG_NETDEVICES=y |
| CONFIG_TUN=y |
| CONFIG_PPP=y |
| CONFIG_PPP_BSDCOMP=y |
| CONFIG_PPP_DEFLATE=y |
| CONFIG_PPP_MPPE=y |
| CONFIG_PPPOLAC=y |
| CONFIG_PPPOPNS=y |
| CONFIG_FB=y |
| CONFIG_SYNC=y |
| CONFIG_USB_GADGET=y |
| CONFIG_USB_G_ANDROID=y |
| CONFIG_USB_OTG_WAKELOCK=y |
| CONFIG_SWITCH=y |
| CONFIG_RTC_CLASS=y |
| CONFIG_STAGING=y |
| CONFIG_ANDROID=y |
| CONFIG_ANDROID_BINDER_IPC=y |
| CONFIG_ASHMEM=y |
| CONFIG_ANDROID_LOGGER=y |
| CONFIG_ANDROID_LOW_MEMORY_KILLER=y |
| CONFIG_ANDROID_INTF_ALARM_DEV=y |
| </pre> |
| |
| <h3>Recommended Configuration</h3> |
| |
| <pre> |
| CONFIG_PANIC_TIMEOUT=5 |
| CONFIG_KALLSYMS_ALL=y |
| CONFIG_PERF_EVENTS=y |
| CONFIG_COMPACTION=y |
| # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set |
| CONFIG_PM_WAKELOCKS_LIMIT=0 |
| # CONFIG_PM_WAKELOCKS_GC is not set |
| CONFIG_PM_RUNTIME=y |
| CONFIG_PM_DEBUG=y |
| CONFIG_SUSPEND_TIME=y |
| CONFIG_BLK_DEV_LOOP=y |
| CONFIG_BLK_DEV_RAM=y |
| CONFIG_BLK_DEV_RAM_SIZE=8192 |
| CONFIG_UID_STAT=y |
| CONFIG_MD=y |
| CONFIG_DM_UEVENT=y |
| CONFIG_INPUT_EVDEV=y |
| CONFIG_INPUT_KEYRESET=y |
| # CONFIG_INPUT_MOUSE is not set |
| CONFIG_INPUT_JOYSTICK=y |
| CONFIG_JOYSTICK_XPAD=y |
| CONFIG_JOYSTICK_XPAD_FF=y |
| CONFIG_JOYSTICK_XPAD_LEDS=y |
| CONFIG_INPUT_TABLET=y |
| CONFIG_TABLET_USB_ACECAD=y |
| CONFIG_TABLET_USB_AIPTEK=y |
| CONFIG_TABLET_USB_GTCO=y |
| CONFIG_TABLET_USB_HANWANG=y |
| CONFIG_TABLET_USB_KBTAB=y |
| CONFIG_TABLET_USB_WACOM=y |
| CONFIG_INPUT_MISC=y |
| CONFIG_INPUT_KEYCHORD=y |
| CONFIG_INPUT_UINPUT=y |
| CONFIG_INPUT_GPIO=y |
| # CONFIG_VT is not set |
| # CONFIG_LEGACY_PTYS is not set |
| CONFIG_POWER_SUPPLY=y |
| CONFIG_BATTERY_ANDROID=y |
| CONFIG_MEDIA_SUPPORT=y |
| CONFIG_BACKLIGHT_LCD_SUPPORT=y |
| CONFIG_SOUND=y |
| CONFIG_SND=y |
| CONFIG_UHID=y |
| CONFIG_USB_HIDDEV=y |
| CONFIG_HID_A4TECH=y |
| CONFIG_HID_ACRUX=y |
| CONFIG_HID_ACRUX_FF=y |
| CONFIG_HID_APPLE=y |
| CONFIG_HID_BELKIN=y |
| CONFIG_HID_CHERRY=y |
| CONFIG_HID_CHICONY=y |
| CONFIG_HID_PRODIKEYS=y |
| CONFIG_HID_CYPRESS=y |
| CONFIG_HID_DRAGONRISE=y |
| CONFIG_DRAGONRISE_FF=y |
| CONFIG_HID_EMS_FF=y |
| CONFIG_HID_ELECOM=y |
| CONFIG_HID_EZKEY=y |
| CONFIG_HID_HOLTEK=y |
| CONFIG_HID_KEYTOUCH=y |
| CONFIG_HID_KYE=y |
| CONFIG_HID_UCLOGIC=y |
| CONFIG_HID_WALTOP=y |
| CONFIG_HID_GYRATION=y |
| CONFIG_HID_TWINHAN=y |
| CONFIG_HID_KENSINGTON=y |
| CONFIG_HID_LCPOWER=y |
| CONFIG_HID_LOGITECH=y |
| CONFIG_LOGITECH_FF=y |
| CONFIG_LOGIRUMBLEPAD2_FF=y |
| CONFIG_LOGIG940_FF=y |
| CONFIG_HID_MAGICMOUSE=y |
| CONFIG_HID_MICROSOFT=y |
| CONFIG_HID_MONTEREY=y |
| CONFIG_HID_MULTITOUCH=y |
| CONFIG_HID_NTRIG=y |
| CONFIG_HID_ORTEK=y |
| CONFIG_HID_PANTHERLORD=y |
| CONFIG_PANTHERLORD_FF=y |
| CONFIG_HID_PETALYNX=y |
| CONFIG_HID_PICOLCD=y |
| CONFIG_HID_PRIMAX=y |
| CONFIG_HID_ROCCAT=y |
| CONFIG_HID_SAITEK=y |
| CONFIG_HID_SAMSUNG=y |
| CONFIG_HID_SONY=y |
| CONFIG_HID_SPEEDLINK=y |
| CONFIG_HID_SUNPLUS=y |
| CONFIG_HID_GREENASIA=y |
| CONFIG_GREENASIA_FF=y |
| CONFIG_HID_SMARTJOYPLUS=y |
| CONFIG_SMARTJOYPLUS_FF=y |
| CONFIG_HID_TIVO=y |
| CONFIG_HID_TOPSEED=y |
| CONFIG_HID_THRUSTMASTER=y |
| CONFIG_HID_WACOM=y |
| CONFIG_HID_WIIMOTE=y |
| CONFIG_HID_ZEROPLUS=y |
| CONFIG_HID_ZYDACRON=y |
| CONFIG_USB_USBNET=y |
| CONFIG_USB_ANNOUNCE_NEW_DEVICES=y |
| CONFIG_USB_EHCI_HCD=y |
| CONFIG_ION=y |
| CONFIG_ANDROID_RAM_CONSOLE=y |
| CONFIG_ANDROID_TIMED_GPIO=y |
| CONFIG_EXT4_FS=y |
| CONFIG_EXT4_FS_SECURITY=y |
| CONFIG_FUSE_FS=y |
| CONFIG_MSDOS_FS=y |
| CONFIG_VFAT_FS=y |
| CONFIG_TMPFS=y |
| CONFIG_TMPFS_POSIX_ACL=y |
| CONFIG_SCHEDSTATS=y |
| CONFIG_TIMER_STATS=y |
| CONFIG_SCHED_TRACER=y |
| </pre> |
