f2fs: add tracepoints to debug checkpoint request

Add tracepoints to debug checkpoint request.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
[Jaegeuk: change expressions]
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index be6aa2eef89446f018f3520b0932a403e8aa6478..f54b83b4d90b14ae6e3834120655999e4ff88b54 100644 (file)
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -20,6 +20,7 @@
 #include "f2fs.h"
 #include "node.h"
 #include "segment.h"
+#include <trace/events/f2fs.h>
 
 static struct kmem_cache *orphan_entry_slab;
 static struct kmem_cache *inode_entry_slab;
@@ -714,9 +715,13 @@ void write_checkpoint(struct f2fs_sb_info *sbi, bool is_umount)
        struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
        unsigned long long ckpt_ver;
 
+       trace_f2fs_write_checkpoint(sbi->sb, is_umount, "start block_ops");
+
        mutex_lock(&sbi->cp_mutex);
        block_operations(sbi);
 
+       trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish block_ops");
+
        f2fs_submit_bio(sbi, DATA, true);
        f2fs_submit_bio(sbi, NODE, true);
        f2fs_submit_bio(sbi, META, true);
@@ -738,6 +743,8 @@ void write_checkpoint(struct f2fs_sb_info *sbi, bool is_umount)
 
        unblock_operations(sbi);
        mutex_unlock(&sbi->cp_mutex);
+
+       trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish checkpoint");
 }
 
 void init_orphan_info(struct f2fs_sb_info *sbi)

diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index ae2da92e0768844d152ccb1ad1c943261cdcbfb4..b2b2f72a023d894bdb25f2aa276370307520d595 100644 (file)
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -645,6 +645,30 @@ TRACE_EVENT(f2fs_submit_write_page,
                (unsigned long long)__entry->block)
 );
 
+TRACE_EVENT(f2fs_write_checkpoint,
+
+       TP_PROTO(struct super_block *sb, bool is_umount, char *msg),
+
+       TP_ARGS(sb, is_umount, msg),
+
+       TP_STRUCT__entry(
+               __field(dev_t,  dev)
+               __field(bool,   is_umount)
+               __field(char *, msg)
+       ),
+
+       TP_fast_assign(
+               __entry->dev            = sb->s_dev;
+               __entry->is_umount      = is_umount;
+               __entry->msg            = msg;
+       ),
+
+       TP_printk("dev = (%d,%d), checkpoint for %s, state = %s",
+               show_dev(__entry),
+               __entry->is_umount ? "clean umount" : "consistency",
+               __entry->msg)
+);
+
 #endif /* _TRACE_F2FS_H */
 
  /* This part must be outside protection */