diff options
| author | David Howells <dhowells@redhat.com> | 2024-04-04 15:51:36 +0300 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2024-04-20 00:02:09 +0300 |
| commit | afc23febd51c7e24361e3a9c09f3e892eb0a41ea (patch) | |
| tree | 9859f9daaf1dcd518c60df378ec8c09b32f209eb /fs/smb/client/fscache.c | |
| parent | dad80c6bff770d25f67ec25fe011730e4a463008 (diff) | |
| download | linux-afc23febd51c7e24361e3a9c09f3e892eb0a41ea.tar.xz | |
cifs: Add tracing for the cifs_tcon struct refcounting
Add tracing for the refcounting/lifecycle of the cifs_tcon struct, marking
different events with different labels and giving each tcon its own debug
ID so that the tracelines corresponding to individual tcons can be
distinguished. This can be enabled with:
echo 1 >/sys/kernel/debug/tracing/events/cifs/smb3_tcon_ref/enable
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: linux-cifs@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/smb/client/fscache.c')
| -rw-r--r-- | fs/smb/client/fscache.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/smb/client/fscache.c b/fs/smb/client/fscache.c index 113bde8f1e61..1a895e6243ee 100644 --- a/fs/smb/client/fscache.c +++ b/fs/smb/client/fscache.c @@ -94,6 +94,11 @@ int cifs_fscache_get_super_cookie(struct cifs_tcon *tcon) } pr_err("Cache volume key already in use (%s)\n", key); vcookie = NULL; + trace_smb3_tcon_ref(tcon->debug_id, tcon->tc_count, + netfs_trace_tcon_ref_see_fscache_collision); + } else { + trace_smb3_tcon_ref(tcon->debug_id, tcon->tc_count, + netfs_trace_tcon_ref_see_fscache_okay); } tcon->fscache = vcookie; @@ -115,6 +120,8 @@ void cifs_fscache_release_super_cookie(struct cifs_tcon *tcon) cifs_fscache_fill_volume_coherency(tcon, &cd); fscache_relinquish_volume(tcon->fscache, &cd, false); tcon->fscache = NULL; + trace_smb3_tcon_ref(tcon->debug_id, tcon->tc_count, + netfs_trace_tcon_ref_see_fscache_relinq); } void cifs_fscache_get_inode_cookie(struct inode *inode) |