linux/fs/fscache/Kconfig
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   1
   2config 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
  12config 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
  29config 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
  46config 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
  56config 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
  62
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