ARM: S3C24XX: CPUFREQ: Add core support.

[safe/jmp/linux-2.6] / fs / fscache / Kconfig

diff --git a/fs/fscache/Kconfig b/fs/fscache/Kconfig
index 7c7bccd..9bbb8ce 100644 (file)
--- a/fs/fscache/Kconfig
+++ b/fs/fscache/Kconfig
@@ -11,6 +11,40 @@ config FSCACHE
 
          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