Re: [PATCH v4 5/5] mtd: Add several functions to the fail_function list

From: Zhihao Cheng
Date: Fri Nov 03 2023 - 07:39:30 EST


在 2023/11/3 14:55, ZhaoLong Wang 写道:
add mtd_read(), mtd_write(), mtd_erase(), mtd_block_markbad() to
fail_function list for testing purpose

- Specify the function to inject the fault
echo mtd_read > /sys/kernel/debug/fail_function/inject

- Specifies the return value of the function to inject the fault
printf %#x -12 > /sys/kernel/debug/fail_function/mtd_read/retval

- Specify other fault injection configuration parameters.
echo -1 > /sys/kernel/debug/fail_function/times
echo 100 > /sys/kernel/debug/fail_function/probability
echo 15 > /sys/kernel/debug/fail_function/space

Signed-off-by: ZhaoLong Wang <wangzhaolong1@xxxxxxxxxx>
---
drivers/mtd/mtdcore.c | 5 +++++
1 file changed, 5 insertions(+)


Reviewed-by: Zhihao Cheng <chengzhihao1@xxxxxxxxxx>