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To make debug parameters configurable at run time, use the fault injection framework to reconstruct the debugfs interface, and retain the legacy fault injection interface. Now, the file emulate_failures and fault_attr files control whether to enable fault emmulation. The file emulate_failures receives a mask that controls type and process of fault injection. Generally, for ease of use, you can directly enter a mask with all 1s. echo 0xffff > /sys/kernel/debug/ubi/ubi0/emulate_failures And you need to configure other fault-injection capabilities for testing purpose: echo 100 > /sys/kernel/debug/ubi/fault_inject/emulate_power_cut/probability echo 15 > /sys/kernel/debug/ubi/fault_inject/emulate_power_cut/space echo 2 > /sys/kernel/debug/ubi/fault_inject/emulate_power_cut/verbose echo -1 > /sys/kernel/debug/ubi/fault_inject/emulate_power_cut/times The CONFIG_MTD_UBI_FAULT_INJECTION to enable the Fault Injection is added to kconfig. Signed-off-by: ZhaoLong Wang <wangzhaolong1@huawei.com> Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.