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