diff options
| author | Ira Weiny <ira.weiny@intel.com> | 2019-06-05 18:45:34 -0700 |
|---|---|---|
| committer | Jeff Layton <jlayton@kernel.org> | 2019-06-19 08:49:37 -0400 |
| commit | d51f527f44f96276a94c191bc160de051f64aeea (patch) | |
| tree | ca76d089fdc5fc6665eb30254a380b98060377f2 | |
| parent | 9e0babf2c06c73cda2c0cd37a1653d823adb40ec (diff) | |
locks: Add trace_leases_conflict
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
| -rw-r--r-- | fs/locks.c | 20 | ||||
| -rw-r--r-- | include/trace/events/filelock.h | 35 |
2 files changed, 50 insertions, 5 deletions
diff --git a/fs/locks.c b/fs/locks.c index ec1e4a5df629..0cc2b9f30e22 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1534,11 +1534,21 @@ static void time_out_leases(struct inode *inode, struct list_head *dispose) static bool leases_conflict(struct file_lock *lease, struct file_lock *breaker) { - if ((breaker->fl_flags & FL_LAYOUT) != (lease->fl_flags & FL_LAYOUT)) - return false; - if ((breaker->fl_flags & FL_DELEG) && (lease->fl_flags & FL_LEASE)) - return false; - return locks_conflict(breaker, lease); + bool rc; + + if ((breaker->fl_flags & FL_LAYOUT) != (lease->fl_flags & FL_LAYOUT)) { + rc = false; + goto trace; + } + if ((breaker->fl_flags & FL_DELEG) && (lease->fl_flags & FL_LEASE)) { + rc = false; + goto trace; + } + + rc = locks_conflict(breaker, lease); +trace: + trace_leases_conflict(rc, lease, breaker); + return rc; } static bool diff --git a/include/trace/events/filelock.h b/include/trace/events/filelock.h index fad7befa612d..4b735923f2ff 100644 --- a/include/trace/events/filelock.h +++ b/include/trace/events/filelock.h @@ -203,6 +203,41 @@ TRACE_EVENT(generic_add_lease, show_fl_type(__entry->fl_type)) ); +TRACE_EVENT(leases_conflict, + TP_PROTO(bool conflict, struct file_lock *lease, struct file_lock *breaker), + + TP_ARGS(conflict, lease, breaker), + + TP_STRUCT__entry( + __field(void *, lease) + __field(void *, breaker) + __field(unsigned int, l_fl_flags) + __field(unsigned int, b_fl_flags) + __field(unsigned char, l_fl_type) + __field(unsigned char, b_fl_type) + __field(bool, conflict) + ), + + TP_fast_assign( + __entry->lease = lease; + __entry->l_fl_flags = lease->fl_flags; + __entry->l_fl_type = lease->fl_type; + __entry->breaker = breaker; + __entry->b_fl_flags = breaker->fl_flags; + __entry->b_fl_type = breaker->fl_type; + __entry->conflict = conflict; + ), + + TP_printk("conflict %d: lease=0x%p fl_flags=%s fl_type=%s; breaker=0x%p fl_flags=%s fl_type=%s", + __entry->conflict, + __entry->lease, + show_fl_flags(__entry->l_fl_flags), + show_fl_type(__entry->l_fl_type), + __entry->breaker, + show_fl_flags(__entry->b_fl_flags), + show_fl_type(__entry->b_fl_type)) +); + #endif /* _TRACE_FILELOCK_H */ /* This part must be outside protection */ |