Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / cachefiles / Kconfig

diff --git a/kernel/fs/cachefiles/Kconfig b/kernel/fs/cachefiles/Kconfig
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+
+config CACHEFILES
+       tristate "Filesystem caching on files"
+       depends on FSCACHE && BLOCK
+       help
+         This permits use of a mounted filesystem as a cache for other
+         filesystems - primarily networking filesystems - thus allowing fast
+         local disk to enhance the speed of slower devices.
+
+         See Documentation/filesystems/caching/cachefiles.txt for more
+         information.
+
+config CACHEFILES_DEBUG
+       bool "Debug CacheFiles"
+       depends on CACHEFILES
+       help
+         This permits debugging to be dynamically enabled in the filesystem
+         caching on files module.  If this is set, the debugging output may be
+         enabled by setting bits in /sys/modules/cachefiles/parameter/debug or
+         by including a debugging specifier in /etc/cachefilesd.conf.
+
+config CACHEFILES_HISTOGRAM
+       bool "Gather latency information on CacheFiles"
+       depends on CACHEFILES && PROC_FS
+       help
+
+         This option causes latency information to be gathered on CacheFiles
+         operation and exported through file:
+
+               /proc/fs/cachefiles/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/cachefiles.txt for more
+         information.