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Linux/fs/fscache/Kconfig

  1 
  2 config FSCACHE
  3         tristate "General filesystem local caching manager"
  4         help
  5           This option enables a generic filesystem caching manager that can be
  6           used by various network and other filesystems to cache data locally.
  7           Different sorts of caches can be plugged in, depending on the
  8           resources available.
  9 
 10           See Documentation/filesystems/caching/fscache.txt for more information.
 11 
 12 config FSCACHE_STATS
 13         bool "Gather statistical information on local caching"
 14         depends on FSCACHE && PROC_FS
 15         help
 16           This option causes statistical information to be gathered on local
 17           caching and exported through file:
 18 
 19                 /proc/fs/fscache/stats
 20 
 21           The gathering of statistics adds a certain amount of overhead to
 22           execution as there are a quite a few stats gathered, and on a
 23           multi-CPU system these may be on cachelines that keep bouncing
 24           between CPUs.  On the other hand, the stats are very useful for
 25           debugging purposes.  Saying 'Y' here is recommended.
 26 
 27           See Documentation/filesystems/caching/fscache.txt for more information.
 28 
 29 config FSCACHE_HISTOGRAM
 30         bool "Gather latency information on local caching"
 31         depends on FSCACHE && PROC_FS
 32         help
 33           This option causes latency information to be gathered on local
 34           caching and exported through file:
 35 
 36                 /proc/fs/fscache/histogram
 37 
 38           The generation of this histogram adds a certain amount of overhead to
 39           execution as there are a number of points at which data is gathered,
 40           and on a multi-CPU system these may be on cachelines that keep
 41           bouncing between CPUs.  On the other hand, the histogram may be
 42           useful for debugging purposes.  Saying 'N' here is recommended.
 43 
 44           See Documentation/filesystems/caching/fscache.txt for more information.
 45 
 46 config FSCACHE_DEBUG
 47         bool "Debug FS-Cache"
 48         depends on FSCACHE
 49         help
 50           This permits debugging to be dynamically enabled in the local caching
 51           management module.  If this is set, the debugging output may be
 52           enabled by setting bits in /sys/modules/fscache/parameter/debug.
 53 
 54           See Documentation/filesystems/caching/fscache.txt for more information.
 55 
 56 config FSCACHE_OBJECT_LIST
 57         bool "Maintain global object list for debugging purposes"
 58         depends on FSCACHE && PROC_FS
 59         help
 60           Maintain a global list of active fscache objects that can be
 61           retrieved through /proc/fs/fscache/objects for debugging purposes

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