Root/fs/cachefiles/Kconfig

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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