Doug / smarc-fsl-linux-kernel

09 Dec, 2006

1 commit

  • de1ba09b2   [PATCH] fault injection: documentation and scripts ... Browse Code ยป

    This patch set provides some fault-injection capabilities.

    - kmalloc() failures

    - alloc_pages() failures

    - disk IO errors

    We can see what really happens if those failures happen.

    In order to enable these fault-injection capabilities:

    1. Enable relevant config options (CONFIG_FAILSLAB, CONFIG_PAGE_ALLOC,
    CONFIG_MAKE_REQUEST) and if you want to configure them via debugfs,
    enable CONFIG_FAULT_INJECTION_DEBUG_FS.

    2. Build and boot with this kernel

    3. Configure fault-injection capabilities behavior by boot option or debugfs

    - Boot option

    failslab=
    fail_page_alloc=
    fail_make_request=

    - Debugfs

    /debug/failslab/*
    /debug/fail_page_alloc/*
    /debug/fail_make_request/*

    Please refer to the Documentation/fault-injection/fault-injection.txt
    for details.

    4. See what really happens.

    Signed-off-by: Akinobu Mita
    Signed-off-by: Don Mullis
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Akinobu Mita