linux-imx

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

    select CRASH_CORE

    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_VMCORE_DEVICE_DUMP

    bool "Device Hardware/Firmware Log Collection"

    depends on PROC_VMCORE

    default n

    help

      After kernel panic, device drivers can collect the device

      specific snapshot of their hardware or firmware before the

      underlying devices are initialized in crash recovery kernel.

      Note that the device driver must be present in the crash

      recovery kernel's initramfs to collect its underlying device

      snapshot.

​

      If you say Y here, the collected device dumps will be added

      as ELF notes to /proc/vmcore.

​

config PROC_SYSCTL

    bool "Sysctl support (/proc/sys)" if EXPERT