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authorDavid Howells <dhowells@redhat.com>2018-04-04 13:41:27 +0100
committerDavid Howells <dhowells@redhat.com>2018-04-04 13:41:27 +0100
commita18feb55769b705a44c4107786c4045eae2e87b6 (patch)
tree3db7d160e672aa9f16a0437b767b3d3bbb10ecc8 /fs/fscache/netfs.c
parent2c98425720233ae3e135add0c7e869b32913502f (diff)
downloadlinux-a18feb55769b705a44c4107786c4045eae2e87b6.tar.bz2
fscache: Add tracepoints
Add some tracepoints to fscache: (*) fscache_cookie - Tracks a cookie's usage count. (*) fscache_netfs - Logs registration of a network filesystem, including the pointer to the cookie allocated. (*) fscache_acquire - Logs cookie acquisition. (*) fscache_relinquish - Logs cookie relinquishment. (*) fscache_enable - Logs enablement of a cookie. (*) fscache_disable - Logs disablement of a cookie. (*) fscache_osm - Tracks execution of states in the object state machine. and cachefiles: (*) cachefiles_ref - Tracks a cachefiles object's usage count. (*) cachefiles_lookup - Logs result of lookup_one_len(). (*) cachefiles_mkdir - Logs result of vfs_mkdir(). (*) cachefiles_create - Logs result of vfs_create(). (*) cachefiles_unlink - Logs calls to vfs_unlink(). (*) cachefiles_rename - Logs calls to vfs_rename(). (*) cachefiles_mark_active - Logs an object becoming active. (*) cachefiles_wait_active - Logs a wait for an old object to be destroyed. (*) cachefiles_mark_inactive - Logs an object becoming inactive. (*) cachefiles_mark_buried - Logs the burial of an object. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/fscache/netfs.c')
-rw-r--r--fs/fscache/netfs.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/fscache/netfs.c b/fs/fscache/netfs.c
index a8aa00be4444..c816600d1dde 100644
--- a/fs/fscache/netfs.c
+++ b/fs/fscache/netfs.c
@@ -60,7 +60,7 @@ int __fscache_register_netfs(struct fscache_netfs *netfs)
goto already_registered;
}
- atomic_inc(&cookie->parent->usage);
+ fscache_cookie_get(cookie->parent, fscache_cookie_get_register_netfs);
atomic_inc(&cookie->parent->n_children);
netfs->primary_index = cookie;
@@ -68,6 +68,7 @@ int __fscache_register_netfs(struct fscache_netfs *netfs)
ret = 0;
pr_notice("Netfs '%s' registered for caching\n", netfs->name);
+ trace_fscache_netfs(netfs);
already_registered:
up_write(&fscache_addremove_sem);