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CONFIG_SLUB_MEMCG_SYSFS_ON: Enable memcg SLUB sysfs support by default

General informations

The Linux kernel configuration item CONFIG_SLUB_MEMCG_SYSFS_ON:

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SLUB creates a directory under /sys/kernel/slab for each allocation cache to host info and debug files. If memory cgroup is enabled, each cache can have per memory cgroup caches. SLUB can create the same sysfs directories for these caches under /sys/kernel/slab/CACHE/cgroup but it can lead to a very high number of debug files being created. This is controlled by slub_memcg_sysfs boot parameter and this config option determines the parameter's default value.

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