xref: /openbmc/linux/fs/fscache/Kconfig (revision 4f2c0a4acffbec01079c28f839422e64ddeff004)
1ec8f24b7SThomas Gleixner# SPDX-License-Identifier: GPL-2.0-only
206b3db1bSDavid 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.
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