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f2fs: trace f2fs_readdir 

This patch adds trace for f2fs_readdir.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2017-10-13 18:01:33 +08:00 committed by Jaegeuk Kim
parent 0c5e36db17
commit e97a3c4c6f
2 changed files with 38 additions and 5 deletions
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14
fs/f2fs/dir.c
View File

@ -14,6 +14,7 @@
#include "node.h"
#include "acl.h"
#include "xattr.h"
#include <trace/events/f2fs.h>
static unsigned long dir_blocks(struct inode *inode)
{
@ -847,6 +848,7 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx)
struct f2fs_dentry_block *dentry_blk = NULL;
struct page *dentry_page = NULL;
struct file_ra_state *ra = &file->f_ra;
loff_t start_pos = ctx->pos;
unsigned int n = ((unsigned long)ctx->pos / NR_DENTRY_IN_BLOCK);
struct f2fs_dentry_ptr d;
struct fscrypt_str fstr = FSTR_INIT(NULL, 0);
@ -855,16 +857,16 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx)
if (f2fs_encrypted_inode(inode)) {
err = fscrypt_get_encryption_info(inode);
if (err && err != -ENOKEY)
return err;
goto out;
err = fscrypt_fname_alloc_buffer(inode, F2FS_NAME_LEN, &fstr);
if (err < 0)
return err;
goto out;
}
if (f2fs_has_inline_dentry(inode)) {
err = f2fs_read_inline_dir(file, ctx, &fstr);
goto out;
goto out_free;
}
/* readahead for multi pages of dir */
@ -880,7 +882,7 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx)
err = 0;
continue;
} else {
goto out;
goto out_free;
}
}
@ -900,8 +902,10 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx)
kunmap(dentry_page);
f2fs_put_page(dentry_page, 1);
}
out:
out_free:
fscrypt_fname_free_buffer(&fstr);
out:
trace_f2fs_readdir(inode, start_pos, ctx->pos, err);
return err < 0 ? err : 0;
}

29
include/trace/events/f2fs.h
View File

@ -784,6 +784,35 @@ TRACE_EVENT(f2fs_lookup_end,
__entry->err)
);
TRACE_EVENT(f2fs_readdir,
TP_PROTO(struct inode *dir, loff_t start_pos, loff_t end_pos, int err),
TP_ARGS(dir, start_pos, end_pos, err),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(ino_t, ino)
__field(loff_t, start)
__field(loff_t, end)
__field(int, err)
),
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->ino = dir->i_ino;
__entry->start = start_pos;
__entry->end = end_pos;
__entry->err = err;
),
TP_printk("dev = (%d,%d), ino = %lu, start_pos:%llu, end_pos:%llu, err:%d",
show_dev_ino(__entry),
__entry->start,
__entry->end,
__entry->err)
);
TRACE_EVENT(f2fs_fallocate,
TP_PROTO(struct inode *inode, int mode,