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bcachefs: Add tracepoints for bch2_sync_fs() and bch2_fsync()

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Add trace_bch2_sync_fs() and trace_bch2_fsync() implementations.

The output in trace is as follows:
  sync-29779   [000] .....   193.700935: bch2_sync_fs: dev 254,16 wait 1
  <...>-40027  [002] .....   342.535227: bch2_fsync: dev 254,32 ino 4099 parent 4096 datasync 1

Signed-off-by: Youling Tang <tangyouling@kylinos.cn>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Youling Tang 2024-05-31 10:35:09 +08:00 committed by Kent Overstreet
parent 8b0882505d
commit 747d1d6c7e
3 changed files with 55 additions and 0 deletions
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2
fs/bcachefs/fs-io.c
View File

@ -194,6 +194,8 @@ int bch2_fsync(struct file *file, loff_t start, loff_t end, int datasync)
struct bch_fs *c = inode->v.i_sb->s_fs_info;
int ret, err;
trace_bch2_fsync(file, datasync);
ret = file_write_and_wait_range(file, start, end);
if (ret)
goto out;

3
fs/bcachefs/fs.c
View File

@ -26,6 +26,7 @@
#include "snapshot.h"
#include "super.h"
#include "xattr.h"
#include "trace.h"
#include <linux/aio.h>
#include <linux/backing-dev.h>
@ -1697,6 +1698,8 @@ static int bch2_sync_fs(struct super_block *sb, int wait)
struct bch_fs *c = sb->s_fs_info;
int ret;
trace_bch2_sync_fs(sb, wait);
if (c->opts.journal_flush_disabled)
return 0;

50
fs/bcachefs/trace.h
View File

@ -200,6 +200,56 @@ DECLARE_EVENT_CLASS(bio,
(unsigned long long)__entry->sector, __entry->nr_sector)
);
/* fs.c: */
TRACE_EVENT(bch2_sync_fs,
TP_PROTO(struct super_block *sb, int wait),
TP_ARGS(sb, wait),
TP_STRUCT__entry(
__field( dev_t, dev )
__field( int, wait )
),
TP_fast_assign(
__entry->dev = sb->s_dev;
__entry->wait = wait;
),
TP_printk("dev %d,%d wait %d",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->wait)
);
/* fs-io.c: */
TRACE_EVENT(bch2_fsync,
TP_PROTO(struct file *file, int datasync),
TP_ARGS(file, datasync),
TP_STRUCT__entry(
__field( dev_t, dev )
__field( ino_t, ino )
__field( ino_t, parent )
__field( int, datasync )
),
TP_fast_assign(
struct dentry *dentry = file->f_path.dentry;
__entry->dev = dentry->d_sb->s_dev;
__entry->ino = d_inode(dentry)->i_ino;
__entry->parent = d_inode(dentry->d_parent)->i_ino;
__entry->datasync = datasync;
),
TP_printk("dev %d,%d ino %lu parent %lu datasync %d ",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
(unsigned long) __entry->parent, __entry->datasync)
);
/* super-io.c: */
TRACE_EVENT(write_super,
TP_PROTO(struct bch_fs *c, unsigned long ip),