From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001 From: James <> Date: Wed, 4 Nov 2015 11:49:21 +0000 Subject: trunk-47381 --- config/Config-kernel.in | 553 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 553 insertions(+) create mode 100644 config/Config-kernel.in (limited to 'config/Config-kernel.in') diff --git a/config/Config-kernel.in b/config/Config-kernel.in new file mode 100644 index 0000000..4be5f53 --- /dev/null +++ b/config/Config-kernel.in @@ -0,0 +1,553 @@ +# Copyright (C) 2006-2014 OpenWrt.org +# +# This is free software, licensed under the GNU General Public License v2. +# See /LICENSE for more information. +# + +config KERNEL_PRINTK + bool "Enable support for printk" + default y + +config KERNEL_CRASHLOG + bool "Crash logging" + depends on !(arm || powerpc || sparc || TARGET_uml) + default y + +config KERNEL_SWAP + bool "Support for paging of anonymous memory (swap)" + default y + +config KERNEL_DEBUG_FS + bool "Compile the kernel with debug filesystem enabled" + default y + help + debugfs is a virtual file system that kernel developers use to put + debugging files into. Enable this option to be able to read and + write to these files. Many common debugging facilities, such as + ftrace, require the existence of debugfs. + +config KERNEL_PERF_EVENTS + bool + default n + +config KERNEL_PROFILING + bool "Compile the kernel with profiling enabled" + default n + select KERNEL_PERF_EVENTS + help + Enable the extended profiling support mechanisms used by profilers such + as OProfile. + +config KERNEL_KALLSYMS + bool "Compile the kernel with symbol table information" + default y + help + This will give you more information in stack traces from kernel oopses. + +config KERNEL_FTRACE + bool "Compile the kernel with tracing support" + depends on !TARGET_uml + default n + +config KERNEL_FTRACE_SYSCALLS + bool "Trace system calls" + depends on KERNEL_FTRACE + default n + +config KERNEL_ENABLE_DEFAULT_TRACERS + bool "Trace process context switches and events" + depends on KERNEL_FTRACE + default n + +config KERNEL_FUNCTION_TRACER + bool "Function tracer" + depends on KERNEL_FTRACE + default n + +config KERNEL_FUNCTION_GRAPH_TRACER + bool "Function graph tracer" + depends on KERNEL_FUNCTION_TRACER + default n + +config KERNEL_DYNAMIC_FTRACE + bool "Enable/disable function tracing dynamically" + depends on KERNEL_FUNCTION_TRACER + default n + +config KERNEL_FUNCTION_PROFILER + bool "Function profiler" + depends on KERNEL_FUNCTION_TRACER + default n + +config KERNEL_DEBUG_KERNEL + bool + default n + +config KERNEL_DEBUG_INFO + bool "Compile the kernel with debug information" + default y + select KERNEL_DEBUG_KERNEL + help + This will compile your kernel and modules with debug information. + +config KERNEL_DEBUG_LL_UART_NONE + bool + default n + depends on arm + +config KERNEL_DEBUG_LL + bool + default n + depends on arm + select KERNEL_DEBUG_LL_UART_NONE + help + ARM low level debugging. + +config KERNEL_DYNAMIC_DEBUG + bool "Compile the kernel with dynamic printk" + select KERNEL_DEBUG_FS + default n + help + Compiles debug level messages into the kernel, which would not + otherwise be available at runtime. These messages can then be + enabled/disabled based on various levels of scope - per source file, + function, module, format string, and line number. This mechanism + implicitly compiles in all pr_debug() and dev_dbg() calls, which + enlarges the kernel text size by about 2%. + +config KERNEL_EARLY_PRINTK + bool "Compile the kernel with early printk" + default y if TARGET_bcm53xx + default n + depends on arm + select KERNEL_DEBUG_KERNEL + select KERNEL_DEBUG_LL if arm + help + Compile the kernel with early printk support. This is only useful for + debugging purposes to send messages over the serial console in early boot. + Enable this to debug early boot problems. + +config KERNEL_KPROBES + bool "Compile the kernel with kprobes support" + default n + select KERNEL_FTRACE + select KERNEL_PERF_EVENTS + help + Compiles the kernel with KPROBES support, which allows you to trap + at almost any kernel address and execute a callback function. + register_kprobe() establishes a probepoint and specifies the + callback. Kprobes is useful for kernel debugging, non-intrusive + instrumentation and testing. + If in doubt, say "N". + +config KERNEL_KPROBE_EVENT + bool + default y if KERNEL_KPROBES + +config KERNEL_AIO + bool "Compile the kernel with asynchronous IO support" + default n + +config KERNEL_DIRECT_IO + bool "Compile the kernel with direct IO support" + default n + +config KERNEL_FHANDLE + bool "Compile the kernel with support for fhandle syscalls" + default n + +config KERNEL_FANOTIFY + bool "Compile the kernel with modern file notification support" + default n + +config KERNEL_BLK_DEV_BSG + bool "Compile the kernel with SCSI generic v4 support for any block device" + default n + +config KERNEL_MAGIC_SYSRQ + bool "Compile the kernel with SysRq support" + default y + +config KERNEL_COREDUMP + bool + +config KERNEL_ELF_CORE + bool "Enable process core dump support" + select KERNEL_COREDUMP + default y + +config KERNEL_PROVE_LOCKING + bool "Enable kernel lock checking" + select KERNEL_DEBUG_KERNEL + default n + +config KERNEL_PRINTK_TIME + bool "Enable printk timestamps" + default y + +config KERNEL_SLUB_DEBUG + bool + +config KERNEL_SLUB_DEBUG_ON + bool + +config KERNEL_SLABINFO + select KERNEL_SLUB_DEBUG + select KERNEL_SLUB_DEBUG_ON + bool "Enable /proc slab debug info" + +config KERNEL_PROC_PAGE_MONITOR + bool "Enable /proc page monitoring" + +config KERNEL_RELAY + bool + +config KERNEL_KEXEC + bool "Enable kexec support" + +config USE_RFKILL + bool "Enable rfkill support" + default RFKILL_SUPPORT + +config USE_SPARSE + bool "Enable sparse check during kernel build" + default n + +config KERNEL_DEVTMPFS + bool "Compile the kernel with device tmpfs enabled" + default n + help + devtmpfs is a simple, kernel-managed /dev filesystem. The kernel creates + devices nodes for all registered devices ti simplify boot, but leaves more + complex tasks to userspace (e.g. udev). + +if KERNEL_DEVTMPFS + + config KERNEL_DEVTMPFS_MOUNT + bool "Automatically mount devtmpfs after root filesystem is mounted" + default n + +endif + +# +# CGROUP support symbols +# + +config KERNEL_CGROUPS + bool "Enable kernel cgroups" + default n + +if KERNEL_CGROUPS + + config KERNEL_CGROUP_DEBUG + bool "Example debug cgroup subsystem" + default n + help + This option enables a simple cgroup subsystem that + exports useful debugging information about the cgroups + framework. + + config KERNEL_FREEZER + bool + default y if KERNEL_CGROUP_FREEZER + + config KERNEL_CGROUP_FREEZER + bool "Freezer cgroup subsystem" + default y + help + Provides a way to freeze and unfreeze all tasks in a + cgroup. + + config KERNEL_CGROUP_DEVICE + bool "Device controller for cgroups" + default y + help + Provides a cgroup implementing whitelists for devices which + a process in the cgroup can mknod or open. + + config KERNEL_CGROUP_PIDS + bool "PIDs cgroup subsystem" + default y + help + Provides enforcement of process number limits in the scope of a + cgroup. + + config KERNEL_CPUSETS + bool "Cpuset support" + default n + help + This option will let you create and manage CPUSETs which + allow dynamically partitioning a system into sets of CPUs and + Memory Nodes and assigning tasks to run only within those sets. + This is primarily useful on large SMP or NUMA systems. + + config KERNEL_PROC_PID_CPUSET + bool "Include legacy /proc//cpuset file" + default n + depends on KERNEL_CPUSETS + + config KERNEL_CGROUP_CPUACCT + bool "Simple CPU accounting cgroup subsystem" + default n + help + Provides a simple Resource Controller for monitoring the + total CPU consumed by the tasks in a cgroup. + + config KERNEL_RESOURCE_COUNTERS + bool "Resource counters" + default n + help + This option enables controller independent resource accounting + infrastructure that works with cgroups. + + config KERNEL_MM_OWNER + bool + default y if KERNEL_MEMCG + + config KERNEL_MEMCG + bool "Memory Resource Controller for Control Groups" + default n + depends on KERNEL_RESOURCE_COUNTERS || !LINUX_3_18 + help + Provides a memory resource controller that manages both anonymous + memory and page cache. (See Documentation/cgroups/memory.txt) + + Note that setting this option increases fixed memory overhead + associated with each page of memory in the system. By this, + 20(40)bytes/PAGE_SIZE on 32(64)bit system will be occupied by memory + usage tracking struct at boot. Total amount of this is printed out + at boot. + + Only enable when you're ok with these tradeoffs and really + sure you need the memory resource controller. Even when you enable + this, you can set "cgroup_disable=memory" at your boot option to + disable memory resource controller and you can avoid overheads + (but lose benefits of memory resource controller). + + This config option also selects MM_OWNER config option, which + could in turn add some fork/exit overhead. + + config KERNEL_MEMCG_SWAP + bool "Memory Resource Controller Swap Extension" + default n + depends on KERNEL_MEMCG + help + Add swap management feature to memory resource controller. When you + enable this, you can limit mem+swap usage per cgroup. In other words, + when you disable this, memory resource controller has no cares to + usage of swap...a process can exhaust all of the swap. This extension + is useful when you want to avoid exhaustion swap but this itself + adds more overheads and consumes memory for remembering information. + Especially if you use 32bit system or small memory system, please + be careful about enabling this. When memory resource controller + is disabled by boot option, this will be automatically disabled and + there will be no overhead from this. Even when you set this config=y, + if boot option "swapaccount=0" is set, swap will not be accounted. + Now, memory usage of swap_cgroup is 2 bytes per entry. If swap page + size is 4096bytes, 512k per 1Gbytes of swap. + + config KERNEL_MEMCG_SWAP_ENABLED + bool "Memory Resource Controller Swap Extension enabled by default" + default n + depends on KERNEL_MEMCG_SWAP + help + Memory Resource Controller Swap Extension comes with its price in + a bigger memory consumption. General purpose distribution kernels + which want to enable the feature but keep it disabled by default + and let the user enable it by swapaccount boot command line + parameter should have this option unselected. + + Those who want to have the feature enabled by default should + select this option (if, for some reason, they need to disable it, + then swapaccount=0 does the trick). + + + config KERNEL_MEMCG_KMEM + bool "Memory Resource Controller Kernel Memory accounting (EXPERIMENTAL)" + default n + depends on KERNEL_MEMCG + help + The Kernel Memory extension for Memory Resource Controller can limit + the amount of memory used by kernel objects in the system. Those are + fundamentally different from the entities handled by the standard + Memory Controller, which are page-based, and can be swapped. Users of + the kmem extension can use it to guarantee that no group of processes + will ever exhaust kernel resources alone. + + config KERNEL_CGROUP_PERF + bool "Enable perf_event per-cpu per-container group (cgroup) monitoring" + select KERNEL_PERF_EVENTS + default n + help + This option extends the per-cpu mode to restrict monitoring to + threads which belong to the cgroup specified and run on the + designated cpu. + + menuconfig KERNEL_CGROUP_SCHED + bool "Group CPU scheduler" + default n + help + This feature lets CPU scheduler recognize task groups and control CPU + bandwidth allocation to such task groups. It uses cgroups to group + tasks. + + if KERNEL_CGROUP_SCHED + + config KERNEL_FAIR_GROUP_SCHED + bool "Group scheduling for SCHED_OTHER" + default n + + config KERNEL_CFS_BANDWIDTH + bool "CPU bandwidth provisioning for FAIR_GROUP_SCHED" + default n + depends on KERNEL_FAIR_GROUP_SCHED + help + This option allows users to define CPU bandwidth rates (limits) for + tasks running within the fair group scheduler. Groups with no limit + set are considered to be unconstrained and will run with no + restriction. + See tip/Documentation/scheduler/sched-bwc.txt for more information. + + config KERNEL_RT_GROUP_SCHED + bool "Group scheduling for SCHED_RR/FIFO" + default n + help + This feature lets you explicitly allocate real CPU bandwidth + to task groups. If enabled, it will also make it impossible to + schedule realtime tasks for non-root users until you allocate + realtime bandwidth for them. + + endif + + config KERNEL_BLK_CGROUP + bool "Block IO controller" + default y + help + Generic block IO controller cgroup interface. This is the common + cgroup interface which should be used by various IO controlling + policies. + + Currently, CFQ IO scheduler uses it to recognize task groups and + control disk bandwidth allocation (proportional time slice allocation) + to such task groups. It is also used by bio throttling logic in + block layer to implement upper limit in IO rates on a device. + + This option only enables generic Block IO controller infrastructure. + One needs to also enable actual IO controlling logic/policy. For + enabling proportional weight division of disk bandwidth in CFQ, set + CONFIG_CFQ_GROUP_IOSCHED=y; for enabling throttling policy, set + CONFIG_BLK_DEV_THROTTLING=y. + + config KERNEL_DEBUG_BLK_CGROUP + bool "Enable Block IO controller debugging" + default n + depends on KERNEL_BLK_CGROUP + help + Enable some debugging help. Currently it exports additional stat + files in a cgroup which can be useful for debugging. + + config KERNEL_NET_CLS_CGROUP + bool "Control Group Classifier" + default y + + config KERNEL_NETPRIO_CGROUP + bool "Network priority cgroup" + default y + +endif + +# +# Namespace support symbols +# + +config KERNEL_NAMESPACES + bool "Enable kernel namespaces" + default n + +if KERNEL_NAMESPACES + + config KERNEL_UTS_NS + bool "UTS namespace" + default y + help + In this namespace, tasks see different info provided + with the uname() system call. + + config KERNEL_IPC_NS + bool "IPC namespace" + default y + help + In this namespace, tasks work with IPC ids which correspond to + different IPC objects in different namespaces. + + config KERNEL_USER_NS + bool "User namespace (EXPERIMENTAL)" + default y + help + This allows containers, i.e. vservers, to use user namespaces + to provide different user info for different servers. + + config KERNEL_PID_NS + bool "PID Namespaces" + default y + help + Support process id namespaces. This allows having multiple + processes with the same pid as long as they are in different + pid namespaces. This is a building block of containers. + + config KERNEL_NET_NS + bool "Network namespace" + default y + help + Allow user space to create what appear to be multiple instances + of the network stack. + +endif + +# +# LXC related symbols +# + +config KERNEL_LXC_MISC + bool "Enable miscellaneous LXC related options" + default n + +if KERNEL_LXC_MISC + + config KERNEL_DEVPTS_MULTIPLE_INSTANCES + bool "Support multiple instances of devpts" + default y + help + Enable support for multiple instances of devpts filesystem. + If you want to have isolated PTY namespaces (eg: in containers), + say Y here. Otherwise, say N. If enabled, each mount of devpts + filesystem with the '-o newinstance' option will create an + independent PTY namespace. + + config KERNEL_POSIX_MQUEUE + bool "POSIX Message Queues" + default y + help + POSIX variant of message queues is a part of IPC. In POSIX message + queues every message has a priority which decides about succession + of receiving it by a process. If you want to compile and run + programs written e.g. for Solaris with use of its POSIX message + queues (functions mq_*) say Y here. + + POSIX message queues are visible as a filesystem called 'mqueue' + and can be mounted somewhere if you want to do filesystem + operations on message queues. + +endif + +config KERNEL_SECCOMP_FILTER + bool + default n + +config KERNEL_SECCOMP + bool "Enable seccomp support" + depends on !(TARGET_uml) + select KERNEL_SECCOMP_FILTER + default n + help + Build kernel with support for seccomp. -- cgit v1.2.3