X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=init%2FKconfig;h=fef641af78c2748a6725fbf795adcf52f88d6230;hb=58bfdd6deeec02b73691ea2c951a3c5d743bca63;hp=b9d11a899b8861576be26f883882c969d170701f;hpb=dcb571be2019ae677bc5ed64437dbc87ae1eb67f;p=linux-2.6 diff --git a/init/Kconfig b/init/Kconfig index b9d11a899b..fef641af78 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1,3 +1,11 @@ +config ARCH + string + option env="ARCH" + +config KERNELVERSION + string + option env="KERNELVERSION" + config DEFCONFIG_LIST string depends on !UML @@ -238,7 +246,7 @@ config AUDIT config AUDITSYSCALL bool "Enable system-call auditing support" - depends on AUDIT && (X86 || PPC || PPC64 || S390 || IA64 || UML || SPARC64) + depends on AUDIT && (X86 || PPC || PPC64 || S390 || IA64 || UML || SPARC64|| SUPERH) default y if SECURITY_SELINUX help Enable low-overhead system-call auditing infrastructure that @@ -361,8 +369,16 @@ config CGROUP_CPUACCT Provides a simple Resource Controller for monitoring the total CPU consumed by the tasks in a cgroup +config RESOURCE_COUNTERS + bool "Resource counters" + help + This option enables controller independent resource accounting + infrastructure that works with cgroups + depends on CGROUPS + config SYSFS_DEPRECATED bool "Create deprecated sysfs files" + depends on SYSFS default y help This option creates deprecated symlinks such as the @@ -381,6 +397,13 @@ config SYSFS_DEPRECATED If you are using a distro that was released in 2006 or later, it should be safe to say N here. +config CGROUP_MEM_CONT + bool "Memory controller for cgroups" + depends on CGROUPS && RESOURCE_COUNTERS + help + Provides a memory controller that manages both page cache and + RSS memory. + config PROC_PID_CPUSET bool "Include legacy /proc//cpuset file" depends on CPUSETS @@ -397,6 +420,22 @@ config RELAY If unsure, say N. +config NAMESPACES + bool "Namespaces support" if EMBEDDED + default !EMBEDDED + help + Provides the way to make tasks work with different objects using + the same id. For example same IPC id may refer to different objects + or same user id or pid may refer to different tasks when used in + different namespaces. + +config UTS_NS + bool "UTS namespace" + depends on NAMESPACES + help + In this namespace tasks see different info provided with the + uname() system call + config BLK_DEV_INITRD bool "Initial RAM filesystem and RAM disk (initramfs/initrd) support" depends on BROKEN || !FRV @@ -532,6 +571,18 @@ config ELF_CORE help Enable support for generating core dumps. Disabling saves about 4k. +config COMPAT_BRK + bool "Disable heap randomization" + default y + help + Randomizing heap placement makes heap exploits harder, but it + also breaks ancient binaries (including anything libc5 based). + This option changes the bootup default to heap randomization + disabled, and can be overriden runtime by setting + /proc/sys/kernel/randomize_va_space to 2. + + On non-ancient distros (post-2000 ones) Y is usually a safe choice. + config BASE_FULL default y bool "Enable full-sized data structures for core" if EMBEDDED @@ -573,7 +624,6 @@ config SIGNALFD config TIMERFD bool "Enable timerfd() system call" if EMBEDDED select ANON_INODES - depends on BROKEN default y help Enable the timerfd() system call that allows to receive timer @@ -648,14 +698,36 @@ config SLOB depends on EMBEDDED bool "SLOB (Simple Allocator)" help - SLOB replaces the SLAB allocator with a drastically simpler - allocator. SLOB is more space efficient than SLAB but does not - scale well (single lock for all operations) and is also highly - susceptible to fragmentation. SLUB can accomplish a higher object - density. It is usually better to use SLUB instead of SLOB. + SLOB replaces the stock allocator with a drastically simpler + allocator. SLOB is generally more space efficient but + does not perform as well on large systems. endchoice +config PROFILING + bool "Profiling support (EXPERIMENTAL)" + help + Say Y here to enable the extended profiling support mechanisms used + by profilers such as OProfile. + +config MARKERS + bool "Activate markers" + help + Place an empty function call at each marker site. Can be + dynamically changed for a probe function. + +source "arch/Kconfig" + +config PROC_PAGE_MONITOR + default y + depends on PROC_FS && MMU + bool "Enable /proc page monitoring" if EMBEDDED + help + Various /proc files exist to monitor process memory utilization: + /proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap, + /proc/kpagecount, and /proc/kpageflags. Disabling these + interfaces will reduce the size of the kernel by approximately 4kb. + endmenu # General setup config SLABINFO @@ -762,3 +834,39 @@ source "block/Kconfig" config PREEMPT_NOTIFIERS bool + +choice + prompt "RCU implementation type:" + default CLASSIC_RCU + help + This allows you to choose either the classic RCU implementation + that is designed for best read-side performance on non-realtime + systems, or the preemptible RCU implementation for best latency + on realtime systems. Note that some kernel preemption modes + will restrict your choice. + + Select the default if you are unsure. + +config CLASSIC_RCU + bool "Classic RCU" + help + This option selects the classic RCU implementation that is + designed for best read-side performance on non-realtime + systems. + + Say Y if you are unsure. + +config PREEMPT_RCU + bool "Preemptible RCU" + depends on PREEMPT + help + This option reduces the latency of the kernel by making certain + RCU sections preemptible. Normally RCU code is non-preemptible, if + this option is selected then read-only RCU sections become + preemptible. This helps latency, but may expose bugs due to + now-naive assumptions about each RCU read-side critical section + remaining on a given CPU through its execution. + + Say N if you are unsure. + +endchoice