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fault-inject: allow configuration via configfs

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This provides a helper function to allow configuration of fault-injection
for configfs-based drivers.

The config items created by this function have the same interface as the
one created under debugfs by fault_create_debugfs_attr().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Link: https://lore.kernel.org/r/20230327143733.14599-2-akinobu.mita@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Akinobu Mita
2023-03-27 23:37:32 +09:00
committed by Jens Axboe
parent 4d5bba5bee
commit 4668c7a294
3 changed files with 225 additions and 1 deletions
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13
lib/Kconfig.debug
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@@ -1958,9 +1958,20 @@ config FAIL_SUNRPC
Provide fault-injection capability for SunRPC and
its consumers.
config FAULT_INJECTION_CONFIGFS
bool "Configfs interface for fault-injection capabilities"
depends on FAULT_INJECTION && CONFIGFS_FS
help
This option allows configfs-based drivers to dynamically configure
fault-injection via configfs. Each parameter for driver-specific
fault-injection can be made visible as a configfs attribute in a
configfs group.
config FAULT_INJECTION_STACKTRACE_FILTER
bool "stacktrace filter for fault-injection capabilities"
depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
depends on FAULT_INJECTION
depends on (FAULT_INJECTION_DEBUG_FS || FAULT_INJECTION_CONFIGFS) && STACKTRACE_SUPPORT
select STACKTRACE
depends on FRAME_POINTER || MIPS || PPC || S390 || MICROBLAZE || ARM || ARC || X86
help