[PATCH v3 1/5] ubi: Use the fault injection framework to enhance the fault injection capability

[Zhihao Cheng]

在 2023/10/20 14:47, ZhaoLong Wang 写道:
> 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 at huawei.com>


Reviewed-by: Zhihao Cheng <chengzhihao1 at huawei.com>