xref: /openbmc/linux/fs/fscache/Kconfig (revision ba61bb17)
1
2config FSCACHE
3	tristate "General filesystem local caching manager"
4	help
5	  This option enables a generic filesystem caching manager that can be
6	  used by various network and other filesystems to cache data locally.
7	  Different sorts of caches can be plugged in, depending on the
8	  resources available.
9
10	  See Documentation/filesystems/caching/fscache.txt for more information.
11
12config FSCACHE_STATS
13	bool "Gather statistical information on local caching"
14	depends on FSCACHE && PROC_FS
15	help
16	  This option causes statistical information to be gathered on local
17	  caching and exported through file:
18
19		/proc/fs/fscache/stats
20
21	  The gathering of statistics adds a certain amount of overhead to
22	  execution as there are a quite a few stats gathered, and on a
23	  multi-CPU system these may be on cachelines that keep bouncing
24	  between CPUs.  On the other hand, the stats are very useful for
25	  debugging purposes.  Saying 'Y' here is recommended.
26
27	  See Documentation/filesystems/caching/fscache.txt for more information.
28
29config FSCACHE_HISTOGRAM
30	bool "Gather latency information on local caching"
31	depends on FSCACHE && PROC_FS
32	help
33	  This option causes latency information to be gathered on local
34	  caching and exported through file:
35
36		/proc/fs/fscache/histogram
37
38	  The generation of this histogram adds a certain amount of overhead to
39	  execution as there are a number of points at which data is gathered,
40	  and on a multi-CPU system these may be on cachelines that keep
41	  bouncing between CPUs.  On the other hand, the histogram may be
42	  useful for debugging purposes.  Saying 'N' here is recommended.
43
44	  See Documentation/filesystems/caching/fscache.txt for more information.
45
46config FSCACHE_DEBUG
47	bool "Debug FS-Cache"
48	depends on FSCACHE
49	help
50	  This permits debugging to be dynamically enabled in the local caching
51	  management module.  If this is set, the debugging output may be
52	  enabled by setting bits in /sys/modules/fscache/parameter/debug.
53
54	  See Documentation/filesystems/caching/fscache.txt for more information.
55
56config FSCACHE_OBJECT_LIST
57	bool "Maintain global object list for debugging purposes"
58	depends on FSCACHE && PROC_FS
59	help
60	  Maintain a global list of active fscache objects that can be
61	  retrieved through /proc/fs/fscache/objects for debugging purposes
62