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lf-6.6.y
linux-imx/drivers/block/null_blk/Kconfig
Akinobu Mita bb4c19e030 block: null_blk: make fault-injection dynamically configurable per device 
The null_blk driver has multiple driver-specific fault injection
mechanisms.  Each fault injection configuration can only be specified by a
module parameter and cannot be reconfigured without reloading the driver.
Also, each configuration is common to all devices and is initialized every
time a new device is added.

This change adds the following subdirectories for each null_blk device.

/sys/kernel/config/nullb/<disk>/timeout_inject
/sys/kernel/config/nullb/<disk>/requeue_inject
/sys/kernel/config/nullb/<disk>/init_hctx_fault_inject

Each fault injection attribute can be dynamically set per device by a
corresponding file in these directories.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Link: https://lore.kernel.org/r/20230327143733.14599-3-akinobu.mita@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-04-13 07:38:55 -06:00

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SPDX-License-Identifier: GPL-2.0

Null block device driver configuration

config BLK_DEV_NULL_BLK tristate "Null test block driver" select CONFIGFS_FS

config BLK_DEV_NULL_BLK_FAULT_INJECTION bool "Support fault injection for Null test block driver" depends on BLK_DEV_NULL_BLK && FAULT_INJECTION_CONFIGFS