linux/fs/cachefiles/Kconfig
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   1
   2config CACHEFILES
   3        tristate "Filesystem caching on files"
   4        depends on FSCACHE && BLOCK
   5        help
   6          This permits use of a mounted filesystem as a cache for other
   7          filesystems - primarily networking filesystems - thus allowing fast
   8          local disk to enhance the speed of slower devices.
   9
  10          See Documentation/filesystems/caching/cachefiles.txt for more
  11          information.
  12
  13config CACHEFILES_DEBUG
  14        bool "Debug CacheFiles"
  15        depends on CACHEFILES
  16        help
  17          This permits debugging to be dynamically enabled in the filesystem
  18          caching on files module.  If this is set, the debugging output may be
  19          enabled by setting bits in /sys/modules/cachefiles/parameter/debug or
  20          by including a debugging specifier in /etc/cachefilesd.conf.
  21
  22config CACHEFILES_HISTOGRAM
  23        bool "Gather latency information on CacheFiles"
  24        depends on CACHEFILES && PROC_FS
  25        help
  26
  27          This option causes latency information to be gathered on CacheFiles
  28          operation and exported through file:
  29
  30                /proc/fs/cachefiles/histogram
  31
  32          The generation of this histogram adds a certain amount of overhead to
  33          execution as there are a number of points at which data is gathered,
  34          and on a multi-CPU system these may be on cachelines that keep
  35          bouncing between CPUs.  On the other hand, the histogram may be
  36          useful for debugging purposes.  Saying 'N' here is recommended.
  37
  38          See Documentation/filesystems/caching/cachefiles.txt for more
  39          information.
  40
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