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62 lines
2.3 KiB
62 lines
2.3 KiB
# SPDX-License-Identifier: GPL-2.0-only |
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config FSCACHE |
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tristate "General filesystem local caching manager" |
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help |
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This option enables a generic filesystem caching manager that can be |
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used by various network and other filesystems to cache data locally. |
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Different sorts of caches can be plugged in, depending on the |
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resources available. |
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See Documentation/filesystems/caching/fscache.rst for more information. |
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config FSCACHE_STATS |
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bool "Gather statistical information on local caching" |
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depends on FSCACHE && PROC_FS |
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help |
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This option causes statistical information to be gathered on local |
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caching and exported through file: |
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/proc/fs/fscache/stats |
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The gathering of statistics adds a certain amount of overhead to |
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execution as there are a quite a few stats gathered, and on a |
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multi-CPU system these may be on cachelines that keep bouncing |
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between CPUs. On the other hand, the stats are very useful for |
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debugging purposes. Saying 'Y' here is recommended. |
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See Documentation/filesystems/caching/fscache.rst for more information. |
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config FSCACHE_HISTOGRAM |
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bool "Gather latency information on local caching" |
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depends on FSCACHE && PROC_FS |
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help |
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This option causes latency information to be gathered on local |
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caching and exported through file: |
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/proc/fs/fscache/histogram |
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The generation of this histogram adds a certain amount of overhead to |
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execution as there are a number of points at which data is gathered, |
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and on a multi-CPU system these may be on cachelines that keep |
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bouncing between CPUs. On the other hand, the histogram may be |
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useful for debugging purposes. Saying 'N' here is recommended. |
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See Documentation/filesystems/caching/fscache.rst for more information. |
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config FSCACHE_DEBUG |
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bool "Debug FS-Cache" |
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depends on FSCACHE |
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help |
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This permits debugging to be dynamically enabled in the local caching |
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management module. If this is set, the debugging output may be |
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enabled by setting bits in /sys/modules/fscache/parameter/debug. |
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See Documentation/filesystems/caching/fscache.rst for more information. |
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config FSCACHE_OBJECT_LIST |
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bool "Maintain global object list for debugging purposes" |
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depends on FSCACHE && PROC_FS |
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help |
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Maintain a global list of active fscache objects that can be |
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retrieved through /proc/fs/fscache/objects for debugging purposes
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