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Date: Thu, 23 May 2013 22:57:53 +0900
From: Namjae Jeon <linkinjeon@...il.com>
To: jaegeuk.kim@...sung.com
Cc: linux-f2fs-devel@...ts.sourceforge.net,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
Namjae Jeon <linkinjeon@...il.com>,
Namjae Jeon <namjae.jeon@...sung.com>,
Amit Sahrawat <a.sahrawat@...sung.com>
Subject: [PATCH 1/4] f2fs: push some variables to debug part
From: Namjae Jeon <namjae.jeon@...sung.com>
Some, counters are needed only for the statistical information
while debugging.
So, those can be controlled using CONFIG_F2FS_STAT_FS,
pushing the usage for few variables under this flag.
Signed-off-by: Namjae Jeon <namjae.jeon@...sung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@...sung.com>
---
fs/f2fs/checkpoint.c | 4 ++++
fs/f2fs/data.c | 6 ++++++
fs/f2fs/f2fs.h | 6 ++++--
fs/f2fs/gc.c | 2 ++
fs/f2fs/segment.c | 5 +++++
5 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 3d11449..01ddc91 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -478,7 +478,9 @@ retry:
}
}
list_add_tail(&new->list, head);
+#ifdef CONFIG_F2FS_STAT_FS
sbi->n_dirty_dirs++;
+#endif
BUG_ON(!S_ISDIR(inode->i_mode));
out:
@@ -508,7 +510,9 @@ void remove_dirty_dir_inode(struct inode *inode)
if (entry->inode == inode) {
list_del(&entry->list);
kmem_cache_free(inode_entry_slab, entry);
+#ifdef CONFIG_F2FS_STAT_FS
sbi->n_dirty_dirs--;
+#endif
break;
}
}
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 1644fff..93917e3 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -68,7 +68,9 @@ static int check_extent_cache(struct inode *inode, pgoff_t pgofs,
struct buffer_head *bh_result)
{
struct f2fs_inode_info *fi = F2FS_I(inode);
+#ifdef CONFIG_F2FS_STAT_FS
struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
+#endif
pgoff_t start_fofs, end_fofs;
block_t start_blkaddr;
@@ -78,7 +80,9 @@ static int check_extent_cache(struct inode *inode, pgoff_t pgofs,
return 0;
}
+#ifdef CONFIG_F2FS_STAT_FS
sbi->total_hit_ext++;
+#endif
start_fofs = fi->ext.fofs;
end_fofs = fi->ext.fofs + fi->ext.len - 1;
start_blkaddr = fi->ext.blk_addr;
@@ -96,7 +100,9 @@ static int check_extent_cache(struct inode *inode, pgoff_t pgofs,
else
bh_result->b_size = UINT_MAX;
+#ifdef CONFIG_F2FS_STAT_FS
sbi->read_hit_ext++;
+#endif
read_unlock(&fi->ext.ext_lock);
return 1;
}
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 7b05029..00c8c5f 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -369,7 +369,6 @@ struct f2fs_sb_info {
/* for directory inode management */
struct list_head dir_inode_list; /* dir inode list */
spinlock_t dir_inode_lock; /* for dir inode list lock */
- unsigned int n_dirty_dirs; /* # of dir inodes */
/* basic file system units */
unsigned int log_sectors_per_block; /* log2 sectors per block */
@@ -406,12 +405,15 @@ struct f2fs_sb_info {
* for stat information.
* one is for the LFS mode, and the other is for the SSR mode.
*/
+#ifdef CONFIG_F2FS_STAT_FS
struct f2fs_stat_info *stat_info; /* FS status information */
unsigned int segment_count[2]; /* # of allocated segments */
unsigned int block_count[2]; /* # of allocated blocks */
- unsigned int last_victim[2]; /* last victim segment # */
int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
int bg_gc; /* background gc calls */
+ unsigned int n_dirty_dirs; /* # of dir inodes */
+#endif
+ unsigned int last_victim[2]; /* last victim segment # */
spinlock_t stat_lock; /* lock for stat operations */
};
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 1496159..25b083c 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -76,7 +76,9 @@ static int gc_thread_func(void *data)
else
wait_ms = increase_sleep_time(wait_ms);
+#ifdef CONFIG_F2FS_STAT_FS
sbi->bg_gc++;
+#endif
/* if return value is not zero, no victim was selected */
if (f2fs_gc(sbi))
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 3a0d027..6ebad78 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -610,7 +610,10 @@ static void allocate_segment_by_default(struct f2fs_sb_info *sbi,
else
new_curseg(sbi, type, false);
out:
+#ifdef CONFIG_F2FS_STAT_FS
sbi->segment_count[curseg->alloc_type]++;
+#endif
+return;
}
void allocate_new_segments(struct f2fs_sb_info *sbi)
@@ -846,7 +849,9 @@ static void do_write_page(struct f2fs_sb_info *sbi, struct page *page,
mutex_lock(&sit_i->sentry_lock);
__refresh_next_blkoff(sbi, curseg);
+#ifdef CONFIG_F2FS_STAT_FS
sbi->block_count[curseg->alloc_type]++;
+#endif
/*
* SIT information should be updated before segment allocation,
--
1.7.9.5
--
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