60 lines
2.5 KiB
Plaintext
60 lines
2.5 KiB
Plaintext
|
config PROC_FS
|
||
|
|
bool "/proc file system support" if EMBEDDED
|
||
|
|
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
|
||
|
|
|
||
|
|
config PROC_VMCORE
|
||
|
|
bool "/proc/vmcore support (EXPERIMENTAL)"
|
||
|
|
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 EMBEDDED
|
||
|
|
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.
|