diff options
| author | Jeff Layton <jlayton@kernel.org> | 2024-10-02 17:27:21 -0400 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2024-10-10 10:20:52 +0200 |
| commit | c86e3c47187ad7fa17f8533a4142453991684b46 (patch) | |
| tree | 4d9609aa5c132674f99acf4bf1a2ef73c3a71f39 /fs/inode.c | |
| parent | 7f2c86cba3c584c7227cddaabdf0ab54c8151e60 (diff) | |
fs: tracepoints around multigrain timestamp events
Add some tracepoints around various multigrain timestamp events.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org> # documentation bits
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20241002-mgtime-v10-6-d1c4717f5284@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/inode.c')
| -rw-r--r-- | fs/inode.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/inode.c b/fs/inode.c index 7d1ede60e549..f7a25c511d6b 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -22,6 +22,9 @@ #include <linux/iversion.h> #include <linux/rw_hint.h> #include <trace/events/writeback.h> +#define CREATE_TRACE_POINTS +#include <trace/events/timestamp.h> + #include "internal.h" /* @@ -2603,6 +2606,7 @@ EXPORT_SYMBOL(inode_nohighmem); struct timespec64 inode_set_ctime_to_ts(struct inode *inode, struct timespec64 ts) { + trace_inode_set_ctime_to_ts(inode, &ts); set_normalized_timespec64(&ts, ts.tv_sec, ts.tv_nsec); inode->i_ctime_sec = ts.tv_sec; inode->i_ctime_nsec = ts.tv_nsec; @@ -2689,14 +2693,17 @@ struct timespec64 inode_set_ctime_current(struct inode *inode) } /* No need to cmpxchg if it's exactly the same */ - if (cns == now.tv_nsec && inode->i_ctime_sec == now.tv_sec) + if (cns == now.tv_nsec && inode->i_ctime_sec == now.tv_sec) { + trace_ctime_xchg_skip(inode, &now); goto out; + } cur = cns; retry: /* Try to swap the nsec value into place. */ if (try_cmpxchg(&inode->i_ctime_nsec, &cur, now.tv_nsec)) { /* If swap occurred, then we're (mostly) done */ inode->i_ctime_sec = now.tv_sec; + trace_ctime_ns_xchg(inode, cns, now.tv_nsec, cur); } else { /* * Was the change due to someone marking the old ctime QUERIED? |