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kernel: provide better control & help for SLUB configuration

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Allow selecting KERNEL_SLUB_DEBUG and KERNEL_SLUB_DEBUG_ON manually and
provide detailed help for both.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki 2023-11-07 23:25:52 +01:00
parent 3b63208443
commit 4fb8e68bc4
1 changed files with 15 additions and 2 deletions
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17
config/Config-kernel.in
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@ -682,10 +682,23 @@ config KERNEL_PRINTK_TIME
default y default y
config KERNEL_SLUB_DEBUG config KERNEL_SLUB_DEBUG
bool bool "Enable SLUB debugging support"
help
This enables various debugging features:
- Accepts "slub_debug" kernel parameter
- Provides caches debugging options (e.g. tracing, validating)
- Adds /sys/kernel/slab/ attrs for reading amounts of *objects*
- Enables /proc/slabinfo support
- Prints info when running out of memory
Enabling this can result in a significant increase of code size.
config KERNEL_SLUB_DEBUG_ON config KERNEL_SLUB_DEBUG_ON
bool depends on KERNEL_SLUB_DEBUG
bool "Boot kernel with basic caches debugging enabled"
help
This enables by default sanity_checks, red_zone, poison and store_user
debugging options for all caches.
config KERNEL_SLABINFO config KERNEL_SLABINFO
select KERNEL_SLUB_DEBUG select KERNEL_SLUB_DEBUG