lkml.org 
[lkml]   [2013]   [Feb]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 7/8] f2fs: add tracepoints for write page operations
Date
From: Namjae Jeon <namjae.jeon@samsung.com>

Add tracepoints to debug the various page write operation
like data pages, meta pages.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com>
---
fs/f2fs/checkpoint.c | 2 ++
fs/f2fs/data.c | 2 ++
include/trace/events/f2fs.h | 62 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 66 insertions(+)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 2b6fc13..a0fce2c 100644
--- 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;
@@ -82,6 +83,7 @@ static int f2fs_write_meta_page(struct page *page,
return AOP_WRITEPAGE_ACTIVATE;
}

+ trace_f2fs_write_page(page, META);
wait_on_page_writeback(page);

write_meta_page(sbi, page);
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index be96b0e..7f59bb9 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -495,6 +495,7 @@ static int f2fs_write_data_page(struct page *page,
unsigned offset;
int err = 0;

+ trace_f2fs_write_page(page, DATA);
if (page->index < end_index)
goto out;

@@ -603,6 +604,7 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping,
struct dnode_of_data dn;
int err = 0;

+ trace_f2fs_write_begin(inode, pos, len, flags);
/* for nobh_write_end */
*fsdata = NULL;

diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 88ee2c7..46856bd 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -440,6 +440,68 @@ TRACE_EVENT(f2fs_reserve_new_block,
__entry->nid)
);

+TRACE_EVENT(f2fs_write_begin,
+
+ TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
+ unsigned int flags),
+
+ TP_ARGS(inode, pos, len, flags),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(ino_t, ino)
+ __field(loff_t, pos)
+ __field(unsigned int, len)
+ __field(unsigned int, flags)
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->pos = pos;
+ __entry->len = len;
+ __entry->flags = flags;
+ ),
+
+ TP_printk("dev %d,%d ino %lu pos %lld len %u flags %u",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long) __entry->ino,
+ __entry->pos, __entry->len, __entry->flags)
+);
+
+DECLARE_EVENT_CLASS(f2fs_page_type_op,
+ TP_PROTO(struct page *page, int type),
+
+ TP_ARGS(page, type),
+
+ TP_STRUCT__entry(
+ __field(pgoff_t, index)
+ __field(int, type)
+ __field(ino_t, ino)
+ __field(dev_t, dev)
+
+ ),
+
+ TP_fast_assign(
+ __entry->index = page->index;
+ __entry->type = type;
+ __entry->ino = page->mapping->host->i_ino;
+ __entry->dev = page->mapping->host->i_sb->s_dev;
+ ),
+
+ TP_printk("dev %d,%d ino %lu page_index %lu type %d",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long) __entry->ino,
+ (unsigned long) __entry->index, __entry->type)
+);
+
+DEFINE_EVENT(f2fs_page_type_op, f2fs_write_page,
+
+ TP_PROTO(struct page *page, int type),
+
+ TP_ARGS(page, type)
+);
+
#endif /* _TRACE_F2FS_H */

/* This part must be outside protection */
--
1.7.9.5


\
 
 \ /
  Last update: 2013-02-19 04:21    [W:0.038 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site