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authorDavid Howells <dhowells@redhat.com>2009-04-03 19:42:37 +0400
committerDavid Howells <dhowells@redhat.com>2009-04-03 19:42:37 +0400
commit7394daa8c61dfda4baa687f133748fa0b599b017 (patch)
tree32d2c55ed60596918ec62ce6ecca186337bf4660 /fs/fscache/main.c
parent06b3db1b9bccdc8c2c743122a89745279e5ecc46 (diff)
downloadlinux-7394daa8c61dfda4baa687f133748fa0b599b017.tar.xz
FS-Cache: Add use of /proc and presentation of statistics
Make FS-Cache create its /proc interface and present various statistical information through it. Also provide the functions for updating this information. These features are enabled by: CONFIG_FSCACHE_PROC CONFIG_FSCACHE_STATS CONFIG_FSCACHE_HISTOGRAM The /proc directory for FS-Cache is also exported so that caching modules can add their own statistics there too. The FS-Cache module is loadable at this point, and the statistics files can be examined by userspace: cat /proc/fs/fscache/stats cat /proc/fs/fscache/histogram Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Steve Dickson <steved@redhat.com> Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Tested-by: Daire Byrne <Daire.Byrne@framestore.com>
Diffstat (limited to 'fs/fscache/main.c')
-rw-r--r--fs/fscache/main.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/fscache/main.c b/fs/fscache/main.c
index 76f7c69079c0..7c734b7fb18e 100644
--- a/fs/fscache/main.c
+++ b/fs/fscache/main.c
@@ -52,9 +52,15 @@ static int __init fscache_init(void)
if (ret < 0)
goto error_slow_work;
+ ret = fscache_proc_init();
+ if (ret < 0)
+ goto error_proc;
+
printk(KERN_NOTICE "FS-Cache: Loaded\n");
return 0;
+error_proc:
+ slow_work_unregister_user();
error_slow_work:
return ret;
}
@@ -68,6 +74,7 @@ static void __exit fscache_exit(void)
{
_enter("");
+ fscache_proc_cleanup();
slow_work_unregister_user();
printk(KERN_NOTICE "FS-Cache: Unloaded\n");
}