[PATCH-v4 4/7] vfs: add lazytime tracepoints for better debugging
From: Theodore Ts'o <tytso@mit.edu>
Date: 2014-11-26 10:23:54
Also in:
linux-btrfs, linux-fsdevel, linux-xfs
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
Signed-off-by: Theodore Ts'o <tytso@mit.edu> --- fs/fs-writeback.c | 1 + fs/inode.c | 5 +++++ 2 files changed, 6 insertions(+)
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 529480a..3d87174 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c@@ -27,6 +27,7 @@ #include <linux/backing-dev.h> #include <linux/tracepoint.h> #include <linux/device.h> +#include <trace/events/fs.h> #include "internal.h" /*
diff --git a/fs/inode.c b/fs/inode.c
index 37c0429..b2fea60 100644
--- a/fs/inode.c
+++ b/fs/inode.c@@ -20,6 +20,9 @@ #include <linux/list_lru.h> #include "internal.h" +#define CREATE_TRACE_POINTS +#include <trace/events/fs.h> + /* * Inode locking rules: *
@@ -1443,6 +1446,7 @@ retry: inode->i_op->write_time(inode); else if (inode->i_sb->s_op->write_inode) mark_inode_dirty_sync(inode); + trace_fs_lazytime_iput(inode); goto retry; } iput_final(inode);
@@ -1561,6 +1565,7 @@ static int update_time(struct inode *inode, struct timespec *time, int flags) inode->i_ts_dirty_day = days_since_boot; spin_unlock(&inode->i_lock); inode_requeue_dirtytime(inode); + trace_fs_lazytime_defer(inode); return 0; } force_dirty:
--
2.1.0
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