xref: /openbmc/linux/fs/fscache/Kconfig (revision 4f2c0a4acffbec01079c28f839422e64ddeff004)
1 ec8f24b7SThomas Gleixner# SPDX-License-Identifier: GPL-2.0-only
2 06b3db1bSDavid Howells
3 *1e1236b8SDavid Howellsconfig FSCACHE
4 *1e1236b8SDavid Howells	tristate "General filesystem local caching manager"
5 *1e1236b8SDavid Howells	select NETFS_SUPPORT
6 *1e1236b8SDavid Howells	help
7 *1e1236b8SDavid Howells	  This option enables a generic filesystem caching manager that can be
8 *1e1236b8SDavid Howells	  used by various network and other filesystems to cache data locally.
9 *1e1236b8SDavid Howells	  Different sorts of caches can be plugged in, depending on the
10 *1e1236b8SDavid Howells	  resources available.
11 *1e1236b8SDavid Howells
12 *1e1236b8SDavid Howells	  See Documentation/filesystems/caching/fscache.rst for more information.
13 *1e1236b8SDavid Howells
14 *1e1236b8SDavid Howellsconfig FSCACHE_STATS
15 *1e1236b8SDavid Howells	bool "Gather statistical information on local caching"
16 *1e1236b8SDavid Howells	depends on FSCACHE && PROC_FS
17 *1e1236b8SDavid Howells	select NETFS_STATS
18 *1e1236b8SDavid Howells	help
19 *1e1236b8SDavid Howells	  This option causes statistical information to be gathered on local
20 *1e1236b8SDavid Howells	  caching and exported through file:
21 *1e1236b8SDavid Howells
22 *1e1236b8SDavid Howells		/proc/fs/fscache/stats
23 *1e1236b8SDavid Howells
24 *1e1236b8SDavid Howells	  The gathering of statistics adds a certain amount of overhead to
25 *1e1236b8SDavid Howells	  execution as there are a quite a few stats gathered, and on a
26 *1e1236b8SDavid Howells	  multi-CPU system these may be on cachelines that keep bouncing
27 *1e1236b8SDavid Howells	  between CPUs.  On the other hand, the stats are very useful for
28 *1e1236b8SDavid Howells	  debugging purposes.  Saying 'Y' here is recommended.
29 *1e1236b8SDavid Howells
30 *1e1236b8SDavid Howells	  See Documentation/filesystems/caching/fscache.rst for more information.
31 *1e1236b8SDavid Howells
32 *1e1236b8SDavid Howellsconfig FSCACHE_DEBUG
33 *1e1236b8SDavid Howells	bool "Debug FS-Cache"
34 *1e1236b8SDavid Howells	depends on FSCACHE
35 *1e1236b8SDavid Howells	help
36 *1e1236b8SDavid Howells	  This permits debugging to be dynamically enabled in the local caching
37 *1e1236b8SDavid Howells	  management module.  If this is set, the debugging output may be
38 *1e1236b8SDavid Howells	  enabled by setting bits in /sys/modules/fscache/parameter/debug.
39 *1e1236b8SDavid Howells
40 *1e1236b8SDavid Howells	  See Documentation/filesystems/caching/fscache.rst for more information.
41