[PATCH v3 17/38] filelock: add a tracepoint to start of break_lease()
From: Jeff Layton <jlayton@kernel.org>
Date: 2025-09-24 18:07:13
Also in:
linux-cifs, linux-doc, linux-fsdevel, linux-nfs, linux-unionfs, linux-xfs, lkml, netfs
Subsystem:
file locking (flock() and fcntl()/lockf()), filesystems (vfs and infrastructure), the rest, tracing · Maintainers:
Jeff Layton, Chuck Lever, Alexander Viro, Christian Brauner, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
...mostly to show the LEASE_BREAK_* flags. Signed-off-by: Jeff Layton <jlayton@kernel.org> --- fs/locks.c | 2 ++ include/trace/events/filelock.h | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 35 insertions(+)
diff --git a/fs/locks.c b/fs/locks.c
index ff5f5a85680a2c8511f5828947e829c7ffc1bd59..d26372ea890cbcd1a47209adeca6778ec23449ab 100644
--- a/fs/locks.c
+++ b/fs/locks.c@@ -1582,6 +1582,8 @@ int __break_lease(struct inode *inode, unsigned int flags) bool want_write = !(flags & LEASE_BREAK_OPEN_RDONLY); int error = 0; + trace_break_lease(inode, flags); + new_fl = lease_alloc(NULL, want_write ? F_WRLCK : F_RDLCK); if (IS_ERR(new_fl)) return PTR_ERR(new_fl);
diff --git a/include/trace/events/filelock.h b/include/trace/events/filelock.h
index 4988804908478912c6b8044dfb3b147fc50e4823..2d45cfad18fa7b2139fb75c1aa327c00521ed9f9 100644
--- a/include/trace/events/filelock.h
+++ b/include/trace/events/filelock.h@@ -120,6 +120,39 @@ DEFINE_EVENT(filelock_lock, flock_lock_inode, TP_PROTO(struct inode *inode, struct file_lock *fl, int ret), TP_ARGS(inode, fl, ret)); +#define show_lease_break_flags(val) \ + __print_flags(val, "|", \ + { LEASE_BREAK_LEASE, "LEASE" }, \ + { LEASE_BREAK_DELEG, "DELEG" }, \ + { LEASE_BREAK_LAYOUT, "LAYOUT" }, \ + { LEASE_BREAK_NONBLOCK, "NONBLOCK" }, \ + { LEASE_BREAK_OPEN_RDONLY, "OPEN_RDONLY" }, \ + { LEASE_BREAK_DIR_CREATE, "DIR_CREATE" }, \ + { LEASE_BREAK_DIR_DELETE, "DIR_DELETE" }, \ + { LEASE_BREAK_DIR_RENAME, "DIR_RENAME" }) + +TRACE_EVENT(break_lease, + TP_PROTO(struct inode *inode, unsigned int flags), + + TP_ARGS(inode, flags), + + TP_STRUCT__entry( + __field(unsigned long, i_ino) + __field(dev_t, s_dev) + __field(unsigned int, flags) + ), + + TP_fast_assign( + __entry->s_dev = inode->i_sb->s_dev; + __entry->i_ino = inode->i_ino; + __entry->flags = flags; + ), + + TP_printk("dev=0x%x:0x%x ino=0x%lx flags=%s", + MAJOR(__entry->s_dev), MINOR(__entry->s_dev), + __entry->i_ino, show_lease_break_flags(flags)) +); + DECLARE_EVENT_CLASS(filelock_lease, TP_PROTO(struct inode *inode, struct file_lease *fl),
--
2.51.0