da50f027f0
When CGROUP block io is enabled a new symbol is exposed and needs to be set or unset else kernel oldconfig hangs waiting for input during normal OpenWrt builds. Therefore add sane defaults for this symbol in that case. Also, the defaults brcm2708 are different than generic defaults because the platform's defconfig enables BLK_DEV_THROTTLING by default (in defconfig config from the patches used to match upstream's kernel, not in OpenWrt config-4.xx). Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com> [make KERNEL_BLK_DEV_THROTTLING_LOW depend on KERNEL_BLK_DEV_THROTTLING] Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
850 lines
22 KiB
Plaintext
850 lines
22 KiB
Plaintext
# Copyright (C) 2006-2014 OpenWrt.org
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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config KERNEL_BUILD_USER
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string "Custom Kernel Build User Name"
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default ""
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help
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Sets the Kernel build user string, which for example will be returned
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by 'uname -a' on running systems.
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If not set, uses system user at build time.
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config KERNEL_BUILD_DOMAIN
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string "Custom Kernel Build Domain Name"
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default ""
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help
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Sets the Kernel build domain string, which for example will be
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returned by 'uname -a' on running systems.
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If not set, uses system hostname at build time.
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config KERNEL_PRINTK
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bool "Enable support for printk"
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default y
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config KERNEL_CRASHLOG
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bool "Crash logging"
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depends on !(arm || powerpc || sparc || TARGET_uml || i386 || x86_64)
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default y
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config KERNEL_SWAP
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bool "Support for paging of anonymous memory (swap)"
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default y if !SMALL_FLASH
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config KERNEL_DEBUG_FS
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bool "Compile the kernel with debug filesystem enabled"
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default y
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help
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debugfs is a virtual file system that kernel developers use to put
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debugging files into. Enable this option to be able to read and
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write to these files. Many common debugging facilities, such as
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ftrace, require the existence of debugfs.
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config KERNEL_MIPS_FPU_EMULATOR
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bool "Compile the kernel with MIPS FPU Emulator"
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default y if TARGET_pistachio
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depends on (mips || mipsel || mips64 || mips64el)
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config KERNEL_ARM_PMU
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bool
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default n
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depends on (arm || aarch64)
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config KERNEL_PERF_EVENTS
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bool "Compile the kernel with performance events and counters"
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default n
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select KERNEL_ARM_PMU if (arm || aarch64)
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config KERNEL_PROFILING
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bool "Compile the kernel with profiling enabled"
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default n
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select KERNEL_PERF_EVENTS
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help
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Enable the extended profiling support mechanisms used by profilers such
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as OProfile.
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config KERNEL_TASKSTATS
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bool "Compile the kernel with task resource/io statistics and accounting"
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default n
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help
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Enable the collection and publishing of task/io statistics and
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accounting. Enable this option to enable i/o monitoring in system
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monitors.
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if KERNEL_TASKSTATS
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config KERNEL_TASK_DELAY_ACCT
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def_bool y
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config KERNEL_TASK_IO_ACCOUNTING
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def_bool y
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config KERNEL_TASK_XACCT
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def_bool y
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endif
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config KERNEL_KALLSYMS
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bool "Compile the kernel with symbol table information"
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default y if !SMALL_FLASH
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help
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This will give you more information in stack traces from kernel oopses.
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config KERNEL_FTRACE
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bool "Compile the kernel with tracing support"
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depends on !TARGET_uml
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default n
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config KERNEL_FTRACE_SYSCALLS
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bool "Trace system calls"
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depends on KERNEL_FTRACE
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default n
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config KERNEL_ENABLE_DEFAULT_TRACERS
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bool "Trace process context switches and events"
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depends on KERNEL_FTRACE
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default n
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config KERNEL_FUNCTION_TRACER
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bool "Function tracer"
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depends on KERNEL_FTRACE
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default n
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config KERNEL_FUNCTION_GRAPH_TRACER
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bool "Function graph tracer"
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depends on KERNEL_FUNCTION_TRACER
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default n
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config KERNEL_DYNAMIC_FTRACE
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bool "Enable/disable function tracing dynamically"
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depends on KERNEL_FUNCTION_TRACER
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default n
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config KERNEL_FUNCTION_PROFILER
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bool "Function profiler"
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depends on KERNEL_FUNCTION_TRACER
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default n
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config KERNEL_DEBUG_KERNEL
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bool
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default n
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config KERNEL_DEBUG_INFO
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bool "Compile the kernel with debug information"
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default y if !SMALL_FLASH
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select KERNEL_DEBUG_KERNEL
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help
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This will compile your kernel and modules with debug information.
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config KERNEL_DEBUG_LL_UART_NONE
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bool
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default n
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depends on arm
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config KERNEL_DEBUG_LL
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bool
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default n
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depends on arm
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select KERNEL_DEBUG_LL_UART_NONE
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help
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ARM low level debugging.
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config KERNEL_DYNAMIC_DEBUG
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bool "Compile the kernel with dynamic printk"
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select KERNEL_DEBUG_FS
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default n
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help
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Compiles debug level messages into the kernel, which would not
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otherwise be available at runtime. These messages can then be
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enabled/disabled based on various levels of scope - per source file,
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function, module, format string, and line number. This mechanism
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implicitly compiles in all pr_debug() and dev_dbg() calls, which
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enlarges the kernel text size by about 2%.
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config KERNEL_EARLY_PRINTK
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bool "Compile the kernel with early printk"
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default y if TARGET_bcm53xx
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default n
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depends on arm
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select KERNEL_DEBUG_KERNEL
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select KERNEL_DEBUG_LL if arm
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help
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Compile the kernel with early printk support. This is only useful for
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debugging purposes to send messages over the serial console in early boot.
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Enable this to debug early boot problems.
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config KERNEL_KPROBES
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bool "Compile the kernel with kprobes support"
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default n
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select KERNEL_FTRACE
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select KERNEL_PERF_EVENTS
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help
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Compiles the kernel with KPROBES support, which allows you to trap
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at almost any kernel address and execute a callback function.
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register_kprobe() establishes a probepoint and specifies the
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callback. Kprobes is useful for kernel debugging, non-intrusive
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instrumentation and testing.
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If in doubt, say "N".
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config KERNEL_KPROBE_EVENT
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bool
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default y if KERNEL_KPROBES
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config KERNEL_AIO
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bool "Compile the kernel with asynchronous IO support"
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default n
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config KERNEL_FHANDLE
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bool "Compile the kernel with support for fhandle syscalls"
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default n
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config KERNEL_FANOTIFY
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bool "Compile the kernel with modern file notification support"
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default n
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config KERNEL_BLK_DEV_BSG
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bool "Compile the kernel with SCSI generic v4 support for any block device"
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default n
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config KERNEL_MAGIC_SYSRQ
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bool "Compile the kernel with SysRq support"
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default y
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config KERNEL_DEBUG_PINCTRL
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bool "Compile the kernel with pinctrl debugging"
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select KERNEL_DEBUG_KERNEL
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config KERNEL_DEBUG_GPIO
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bool "Compile the kernel with gpio debugging"
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select KERNEL_DEBUG_KERNEL
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config KERNEL_COREDUMP
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bool
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config KERNEL_ELF_CORE
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bool "Enable process core dump support"
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select KERNEL_COREDUMP
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default y if !SMALL_FLASH
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config KERNEL_PROVE_LOCKING
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bool "Enable kernel lock checking"
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select KERNEL_DEBUG_KERNEL
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default n
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config KERNEL_PRINTK_TIME
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bool "Enable printk timestamps"
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default y
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config KERNEL_SLUB_DEBUG
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bool
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config KERNEL_SLUB_DEBUG_ON
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bool
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config KERNEL_SLABINFO
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select KERNEL_SLUB_DEBUG
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select KERNEL_SLUB_DEBUG_ON
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bool "Enable /proc slab debug info"
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config KERNEL_PROC_PAGE_MONITOR
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bool "Enable /proc page monitoring"
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config KERNEL_RELAY
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bool
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config KERNEL_KEXEC
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bool "Enable kexec support"
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config KERNEL_PROC_VMCORE
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bool
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config KERNEL_CRASH_DUMP
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depends on i386 || x86_64 || arm || armeb
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select KERNEL_KEXEC
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select KERNEL_PROC_VMCORE
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bool "Enable support for kexec crashdump"
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default y
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config USE_RFKILL
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bool "Enable rfkill support"
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default RFKILL_SUPPORT
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config USE_SPARSE
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bool "Enable sparse check during kernel build"
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default n
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config KERNEL_DEVTMPFS
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bool "Compile the kernel with device tmpfs enabled"
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default n
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help
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devtmpfs is a simple, kernel-managed /dev filesystem. The kernel creates
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devices nodes for all registered devices to simplify boot, but leaves more
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complex tasks to userspace (e.g. udev).
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if KERNEL_DEVTMPFS
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config KERNEL_DEVTMPFS_MOUNT
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bool "Automatically mount devtmpfs after root filesystem is mounted"
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default n
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endif
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config KERNEL_KEYS
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bool "Enable kernel access key retention support"
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default n
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config KERNEL_PERSISTENT_KEYRINGS
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bool "Enable kernel persistent keyrings"
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depends on KERNEL_KEYS
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default n
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config KERNEL_BIG_KEYS
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bool "Enable large payload keys on kernel keyrings"
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depends on KERNEL_KEYS
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default n
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config KERNEL_ENCRYPTED_KEYS
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tristate "Enable keys with encrypted payloads on kernel keyrings"
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depends on KERNEL_KEYS
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default n
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#
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# CGROUP support symbols
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#
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config KERNEL_CGROUPS
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bool "Enable kernel cgroups"
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default n
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if KERNEL_CGROUPS
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config KERNEL_CGROUP_DEBUG
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bool "Example debug cgroup subsystem"
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default n
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help
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This option enables a simple cgroup subsystem that
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exports useful debugging information about the cgroups
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framework.
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config KERNEL_FREEZER
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bool
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default y if KERNEL_CGROUP_FREEZER
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config KERNEL_CGROUP_FREEZER
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bool "Freezer cgroup subsystem"
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default y
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help
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Provides a way to freeze and unfreeze all tasks in a
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cgroup.
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config KERNEL_CGROUP_DEVICE
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bool "Device controller for cgroups"
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default y
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help
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Provides a cgroup implementing whitelists for devices which
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a process in the cgroup can mknod or open.
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config KERNEL_CGROUP_PIDS
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bool "PIDs cgroup subsystem"
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default y
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help
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Provides enforcement of process number limits in the scope of a
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cgroup.
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config KERNEL_CPUSETS
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bool "Cpuset support"
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default n
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help
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This option will let you create and manage CPUSETs which
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allow dynamically partitioning a system into sets of CPUs and
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Memory Nodes and assigning tasks to run only within those sets.
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This is primarily useful on large SMP or NUMA systems.
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config KERNEL_PROC_PID_CPUSET
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bool "Include legacy /proc/<pid>/cpuset file"
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default n
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depends on KERNEL_CPUSETS
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config KERNEL_CGROUP_CPUACCT
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bool "Simple CPU accounting cgroup subsystem"
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default n
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help
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Provides a simple Resource Controller for monitoring the
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total CPU consumed by the tasks in a cgroup.
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config KERNEL_RESOURCE_COUNTERS
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bool "Resource counters"
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default n
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help
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This option enables controller independent resource accounting
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infrastructure that works with cgroups.
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config KERNEL_MM_OWNER
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bool
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default y if KERNEL_MEMCG
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config KERNEL_MEMCG
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bool "Memory Resource Controller for Control Groups"
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default n
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depends on KERNEL_RESOURCE_COUNTERS || !LINUX_3_18
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help
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Provides a memory resource controller that manages both anonymous
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memory and page cache. (See Documentation/cgroups/memory.txt)
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Note that setting this option increases fixed memory overhead
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associated with each page of memory in the system. By this,
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20(40)bytes/PAGE_SIZE on 32(64)bit system will be occupied by memory
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usage tracking struct at boot. Total amount of this is printed out
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at boot.
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Only enable when you're ok with these tradeoffs and really
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sure you need the memory resource controller. Even when you enable
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this, you can set "cgroup_disable=memory" at your boot option to
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disable memory resource controller and you can avoid overheads
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(but lose benefits of memory resource controller).
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This config option also selects MM_OWNER config option, which
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could in turn add some fork/exit overhead.
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config KERNEL_MEMCG_SWAP
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bool "Memory Resource Controller Swap Extension"
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default n
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depends on KERNEL_MEMCG
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help
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Add swap management feature to memory resource controller. When you
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enable this, you can limit mem+swap usage per cgroup. In other words,
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when you disable this, memory resource controller has no cares to
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usage of swap...a process can exhaust all of the swap. This extension
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is useful when you want to avoid exhaustion swap but this itself
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adds more overheads and consumes memory for remembering information.
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Especially if you use 32bit system or small memory system, please
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be careful about enabling this. When memory resource controller
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is disabled by boot option, this will be automatically disabled and
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there will be no overhead from this. Even when you set this config=y,
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if boot option "swapaccount=0" is set, swap will not be accounted.
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Now, memory usage of swap_cgroup is 2 bytes per entry. If swap page
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size is 4096bytes, 512k per 1Gbytes of swap.
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config KERNEL_MEMCG_SWAP_ENABLED
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bool "Memory Resource Controller Swap Extension enabled by default"
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default n
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depends on KERNEL_MEMCG_SWAP
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help
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Memory Resource Controller Swap Extension comes with its price in
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a bigger memory consumption. General purpose distribution kernels
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which want to enable the feature but keep it disabled by default
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and let the user enable it by swapaccount boot command line
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parameter should have this option unselected.
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Those who want to have the feature enabled by default should
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select this option (if, for some reason, they need to disable it,
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then swapaccount=0 does the trick).
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config KERNEL_MEMCG_KMEM
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bool "Memory Resource Controller Kernel Memory accounting (EXPERIMENTAL)"
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default n
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depends on KERNEL_MEMCG
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help
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The Kernel Memory extension for Memory Resource Controller can limit
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the amount of memory used by kernel objects in the system. Those are
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fundamentally different from the entities handled by the standard
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Memory Controller, which are page-based, and can be swapped. Users of
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the kmem extension can use it to guarantee that no group of processes
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will ever exhaust kernel resources alone.
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config KERNEL_CGROUP_PERF
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bool "Enable perf_event per-cpu per-container group (cgroup) monitoring"
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select KERNEL_PERF_EVENTS
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default n
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help
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This option extends the per-cpu mode to restrict monitoring to
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threads which belong to the cgroup specified and run on the
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designated cpu.
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menuconfig KERNEL_CGROUP_SCHED
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bool "Group CPU scheduler"
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default n
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help
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This feature lets CPU scheduler recognize task groups and control CPU
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bandwidth allocation to such task groups. It uses cgroups to group
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tasks.
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if KERNEL_CGROUP_SCHED
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config KERNEL_FAIR_GROUP_SCHED
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bool "Group scheduling for SCHED_OTHER"
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default n
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config KERNEL_CFS_BANDWIDTH
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bool "CPU bandwidth provisioning for FAIR_GROUP_SCHED"
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default n
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depends on KERNEL_FAIR_GROUP_SCHED
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help
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This option allows users to define CPU bandwidth rates (limits) for
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tasks running within the fair group scheduler. Groups with no limit
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set are considered to be unconstrained and will run with no
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restriction.
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See tip/Documentation/scheduler/sched-bwc.txt for more information.
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config KERNEL_RT_GROUP_SCHED
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bool "Group scheduling for SCHED_RR/FIFO"
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default n
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help
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This feature lets you explicitly allocate real CPU bandwidth
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to task groups. If enabled, it will also make it impossible to
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schedule realtime tasks for non-root users until you allocate
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realtime bandwidth for them.
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endif
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config KERNEL_BLK_CGROUP
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bool "Block IO controller"
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default y
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help
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Generic block IO controller cgroup interface. This is the common
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cgroup interface which should be used by various IO controlling
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policies.
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Currently, CFQ IO scheduler uses it to recognize task groups and
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control disk bandwidth allocation (proportional time slice allocation)
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to such task groups. It is also used by bio throttling logic in
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block layer to implement upper limit in IO rates on a device.
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This option only enables generic Block IO controller infrastructure.
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One needs to also enable actual IO controlling logic/policy. For
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enabling proportional weight division of disk bandwidth in CFQ, set
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CONFIG_CFQ_GROUP_IOSCHED=y; for enabling throttling policy, set
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CONFIG_BLK_DEV_THROTTLING=y.
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if KERNEL_BLK_CGROUP
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config KERNEL_CFQ_GROUP_IOSCHED
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bool "Proportional weight of disk bandwidth in CFQ"
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config KERNEL_BLK_DEV_THROTTLING
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bool "Enable throttling policy"
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default y if TARGET_brcm2708
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config KERNEL_BLK_DEV_THROTTLING_LOW
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bool "Block throttling .low limit interface support (EXPERIMENTAL)"
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depends on KERNEL_BLK_DEV_THROTTLING
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endif
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config KERNEL_DEBUG_BLK_CGROUP
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bool "Enable Block IO controller debugging"
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default n
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depends on KERNEL_BLK_CGROUP
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help
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Enable some debugging help. Currently it exports additional stat
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files in a cgroup which can be useful for debugging.
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config KERNEL_NET_CLS_CGROUP
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bool "Control Group Classifier"
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default y
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config KERNEL_NETPRIO_CGROUP
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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.
|
|
|
|
#
|
|
# IPv4 configuration
|
|
#
|
|
|
|
config KERNEL_IP_MROUTE
|
|
bool "Enable IPv4 multicast routing"
|
|
default y
|
|
help
|
|
Multicast routing requires a multicast routing daemon in
|
|
addition to kernel support.
|
|
|
|
#
|
|
# IPv6 configuration
|
|
#
|
|
|
|
config KERNEL_IPV6
|
|
def_bool IPV6
|
|
|
|
if KERNEL_IPV6
|
|
|
|
config KERNEL_IPV6_MULTIPLE_TABLES
|
|
def_bool y
|
|
|
|
config KERNEL_IPV6_SUBTREES
|
|
def_bool y
|
|
|
|
config KERNEL_IPV6_MROUTE
|
|
bool "Enable IPv6 multicast routing"
|
|
default y
|
|
help
|
|
Multicast routing requires a multicast routing daemon in
|
|
addition to kernel support.
|
|
|
|
config KERNEL_IPV6_PIMSM_V2
|
|
def_bool n
|
|
|
|
endif
|
|
|
|
#
|
|
# NFS related symbols
|
|
#
|
|
config KERNEL_IP_PNP
|
|
bool "Compile the kernel with rootfs on NFS"
|
|
help
|
|
If you want to make your kernel boot off a NFS server as root
|
|
filesystem, select Y here.
|
|
|
|
if KERNEL_IP_PNP
|
|
|
|
config KERNEL_IP_PNP_DHCP
|
|
def_bool y
|
|
|
|
config KERNEL_IP_PNP_BOOTP
|
|
def_bool n
|
|
|
|
config KERNEL_IP_PNP_RARP
|
|
def_bool n
|
|
|
|
config KERNEL_NFS_FS
|
|
def_bool y
|
|
|
|
config KERNEL_NFS_V2
|
|
def_bool y
|
|
|
|
config KERNEL_NFS_V3
|
|
def_bool y
|
|
|
|
config KERNEL_ROOT_NFS
|
|
def_bool y
|
|
|
|
endif
|
|
|
|
menu "Filesystem ACL and attr support options"
|
|
config USE_FS_ACL_ATTR
|
|
bool "Use filesystem ACL and attr support by default"
|
|
default n
|
|
help
|
|
Make using ACLs (e.g. POSIX ACL, NFSv4 ACL) the default
|
|
for kernel and packages, except tmpfs, flash filesystems,
|
|
and old NFS. Also enable userspace extended attribute support
|
|
by default. (OpenWrt already has an expection it will be
|
|
present in the kernel).
|
|
|
|
config KERNEL_FS_POSIX_ACL
|
|
bool "Enable POSIX ACL support"
|
|
default y if USE_FS_ACL_ATTR
|
|
|
|
config KERNEL_BTRFS_FS_POSIX_ACL
|
|
bool "Enable POSIX ACL for BtrFS Filesystems"
|
|
select KERNEL_FS_POSIX_ACL
|
|
default y if USE_FS_ACL_ATTR
|
|
|
|
config KERNEL_EXT4_FS_POSIX_ACL
|
|
bool "Enable POSIX ACL for Ext4 Filesystems"
|
|
select KERNEL_FS_POSIX_ACL
|
|
default y if USE_FS_ACL_ATTR
|
|
|
|
config KERNEL_F2FS_FS_POSIX_ACL
|
|
bool "Enable POSIX ACL for F2FS Filesystems"
|
|
select KERNEL_FS_POSIX_ACL
|
|
default n
|
|
|
|
config KERNEL_JFFS2_FS_POSIX_ACL
|
|
bool "Enable POSIX ACL for JFFS2 Filesystems"
|
|
select KERNEL_FS_POSIX_ACL
|
|
default n
|
|
|
|
config KERNEL_TMPFS_POSIX_ACL
|
|
bool "Enable POSIX ACL for TMPFS Filesystems"
|
|
select KERNEL_FS_POSIX_ACL
|
|
default n
|
|
|
|
config KERNEL_CIFS_ACL
|
|
bool "Enable CIFS ACLs"
|
|
select KERNEL_FS_POSIX_ACL
|
|
default y if USE_FS_ACL_ATTR
|
|
|
|
config KERNEL_HFS_FS_POSIX_ACL
|
|
bool "Enable POSIX ACL for HFS Filesystems"
|
|
select KERNEL_FS_POSIX_ACL
|
|
default y if USE_FS_ACL_ATTR
|
|
|
|
config KERNEL_HFSPLUG_FS_POSIX_ACL
|
|
bool "Enable POSIX ACL for HFS+ Filesystems"
|
|
select KERNEL_FS_POSIX_ACL
|
|
default y if USE_FS_ACL_ATTR
|
|
|
|
config KERNEL_NFS_ACL_SUPPORT
|
|
bool "Enable ACLs for NFS"
|
|
default y if USE_FS_ACL_ATTR
|
|
|
|
config KERNEL_NFS_V3_ACL_SUPPORT
|
|
bool "Enable ACLs for NFSv3"
|
|
default n
|
|
|
|
config KERNEL_NFSD_V2_ACL_SUPPORT
|
|
bool "Enable ACLs for NFSDv2"
|
|
default n
|
|
|
|
config KERNEL_NFSD_V3_ACL_SUPPORT
|
|
bool "Enable ACLs for NFSDv3"
|
|
default n
|
|
|
|
config KERNEL_REISER_FS_POSIX_ACL
|
|
bool "Enable POSIX ACLs for ReiserFS"
|
|
select KERNEL_FS_POSIX_ACL
|
|
default y if USE_FS_ACL_ATTR
|
|
|
|
config KERNEL_XFS_POSIX_ACL
|
|
bool "Enable POSIX ACLs for XFS"
|
|
select KERNEL_FS_POSIX_ACL
|
|
default y if USE_FS_ACL_ATTR
|
|
|
|
config KERNEL_JFS_POSIX_ACL
|
|
bool "Enable POSIX ACLs for JFS"
|
|
select KERNEL_FS_POSIX_ACL
|
|
default y if USE_FS_ACL_ATTR
|
|
|
|
endmenu
|
|
|
|
config KERNEL_DEVMEM
|
|
bool "/dev/mem virtual device support"
|
|
help
|
|
Say Y here if you want to support the /dev/mem device.
|
|
The /dev/mem device is used to access areas of physical
|
|
memory.
|
|
|
|
config KERNEL_DEVKMEM
|
|
bool "/dev/kmem virtual device support"
|
|
help
|
|
Say Y here if you want to support the /dev/kmem device. The
|
|
/dev/kmem device is rarely used, but can be used for certain
|
|
kind of kernel debugging operations.
|
|
|
|
config KERNEL_SQUASHFS_FRAGMENT_CACHE_SIZE
|
|
int "Number of squashfs fragments cached"
|
|
default 2 if (SMALL_FLASH && !LOW_MEMORY_FOOTPRINT)
|
|
default 3
|
|
|
|
#
|
|
# compile optimiziation setting
|
|
#
|
|
choice
|
|
prompt "Compiler optimization level"
|
|
default KERNEL_CC_OPTIMIZE_FOR_SIZE if SMALL_FLASH
|
|
|
|
config KERNEL_CC_OPTIMIZE_FOR_PERFORMANCE
|
|
bool "Optimize for performance"
|
|
help
|
|
This is the default optimization level for the kernel, building
|
|
with the "-O2" compiler flag for best performance and most
|
|
helpful compile-time warnings.
|
|
|
|
config KERNEL_CC_OPTIMIZE_FOR_SIZE
|
|
bool "Optimize for size"
|
|
help
|
|
Enabling this option will pass "-Os" instead of "-O2" to
|
|
your compiler resulting in a smaller kernel.
|
|
|
|
endchoice
|