summaryrefslogtreecommitdiff
path: root/fs/proc/Kconfig
diff options
context:
space:
mode:
Diffstat (limited to 'fs/proc/Kconfig')
-rw-r--r--fs/proc/Kconfig73
1 files changed, 73 insertions, 0 deletions
diff --git a/fs/proc/Kconfig b/fs/proc/Kconfig
new file mode 100644
index 000000000..2183fcf41
--- /dev/null
+++ b/fs/proc/Kconfig
@@ -0,0 +1,73 @@
+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.