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- config PROC_FS
- bool "/proc file system support" if EXPERT
- default y
- help
- This is a virtual file system providing information about the status
- of the system. "Virtual" means that it doesn't take up any space on
- your hard disk: the files are created on the fly by the kernel when
- you try to access them. Also, you cannot read the files with older
- version of the program less: you need to use more or cat.
- It's totally cool; for example, "cat /proc/interrupts" gives
- information about what the different IRQs are used for at the moment
- (there is a small number of Interrupt ReQuest lines in your computer
- that are used by the attached devices to gain the CPU's attention --
- often a source of trouble if two devices are mistakenly configured
- to use the same IRQ). The program procinfo to display some
- information about your system gathered from the /proc file system.
- Before you can use the /proc file system, it has to be mounted,
- meaning it has to be given a location in the directory hierarchy.
- That location should be /proc. A command such as "mount -t proc proc
- /proc" or the equivalent line in /etc/fstab does the job.
- The /proc file system is explained in the file
- <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
- ("man 5 proc").
- This option will enlarge your kernel by about 67 KB. Several
- programs depend on this, so everyone should say Y here.
- config PROC_KCORE
- bool "/proc/kcore support" if !ARM
- depends on PROC_FS && MMU
- help
- Provides a virtual ELF core file of the live kernel. This can
- be read with gdb and other ELF tools. No modifications can be
- made using this mechanism.
- config PROC_VMCORE
- bool "/proc/vmcore support"
- depends on PROC_FS && CRASH_DUMP
- default y
- help
- Exports the dump image of crashed kernel in ELF format.
- config PROC_SYSCTL
- bool "Sysctl support (/proc/sys)" if EXPERT
- depends on PROC_FS
- select SYSCTL
- default y
- ---help---
- The sysctl interface provides a means of dynamically changing
- certain kernel parameters and variables on the fly without requiring
- a recompile of the kernel or reboot of the system. The primary
- interface is through /proc/sys. If you say Y here a tree of
- modifiable sysctl entries will be generated beneath the
- /proc/sys directory. They are explained in the files
- in <file:Documentation/sysctl/>. Note that enabling this
- option will enlarge the kernel by at least 8 KB.
- As it is generally a good thing, you should say Y here unless
- building a kernel for install/rescue disks or your system is very
- limited in memory.
- config PROC_PAGE_MONITOR
- default y
- depends on PROC_FS && MMU
- bool "Enable /proc page monitoring" if EXPERT
- 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.
- config PROC_CHILDREN
- bool "Include /proc/<pid>/task/<tid>/children file"
- default n
- help
- Provides a fast way to retrieve first level children pids of a task. See
- <file:Documentation/filesystems/proc.txt> for more information.
- Say Y if you are running any user-space software which takes benefit from
- this interface. For example, rkt is such a piece of software.
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