Commit a2a4a7e4 authored by Namjae Jeon's avatar Namjae Jeon Committed by Jaegeuk Kim
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f2fs: add tracepoints for sync & inode operations



Add tracepoints in f2fs for tracing the syncing
operations like filesystem sync, file sync enter/exit.
It will helf to trace the code under debugging scenarios.

Also add tracepoints for tracing the various inode operations
like building inode, eviction of inode, link/unlike of
inodes.
Signed-off-by: default avatarNamjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: default avatarPankaj Kumar <pankaj.km@samsung.com>
Acked-by: default avatarSteven Rostedt <rostedt@goodmis.org>
[Jaegeuk: combine and modify the tracepoint structures]
Signed-off-by: default avatarJaegeuk Kim <jaegeuk.kim@samsung.com>
parent e66509f0
......@@ -25,6 +25,7 @@
#include "segment.h"
#include "xattr.h"
#include "acl.h"
#include <trace/events/f2fs.h>
static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma,
struct vm_fault *vmf)
......@@ -116,9 +117,12 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
if (inode->i_sb->s_flags & MS_RDONLY)
return 0;
trace_f2fs_sync_file_enter(inode);
ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
if (ret)
if (ret) {
trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
return ret;
}
/* guarantee free sections for fsync */
f2fs_balance_fs(sbi);
......@@ -153,6 +157,7 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
}
out:
mutex_unlock(&inode->i_mutex);
trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
return ret;
}
......
......@@ -16,6 +16,8 @@
#include "f2fs.h"
#include "node.h"
#include <trace/events/f2fs.h>
void f2fs_set_inode_flags(struct inode *inode)
{
unsigned int flags = F2FS_I(inode)->i_flags;
......@@ -91,13 +93,16 @@ struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
struct inode *inode;
int ret;
int ret = 0;
inode = iget_locked(sb, ino);
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
if (!(inode->i_state & I_NEW)) {
trace_f2fs_iget(inode);
return inode;
}
if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
goto make_now;
......@@ -139,11 +144,12 @@ struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
goto bad_inode;
}
unlock_new_inode(inode);
trace_f2fs_iget(inode);
return inode;
bad_inode:
iget_failed(inode);
trace_f2fs_iget_exit(inode, ret);
return ERR_PTR(ret);
}
......@@ -239,6 +245,7 @@ void f2fs_evict_inode(struct inode *inode)
struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
int ilock;
trace_f2fs_evict_inode(inode);
truncate_inode_pages(&inode->i_data, 0);
if (inode->i_ino == F2FS_NODE_INO(sbi) ||
......
......@@ -18,6 +18,7 @@
#include "node.h"
#include "xattr.h"
#include "acl.h"
#include <trace/events/f2fs.h>
static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
{
......@@ -235,6 +236,7 @@ static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
int err = -ENOENT;
int ilock;
trace_f2fs_unlink_enter(dir, dentry);
f2fs_balance_fs(sbi);
de = f2fs_find_entry(dir, &dentry->d_name, &page);
......@@ -255,6 +257,7 @@ static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
/* In order to evict this inode, we set it dirty */
mark_inode_dirty(inode);
fail:
trace_f2fs_unlink_exit(inode, err);
return err;
}
......
......@@ -29,6 +29,9 @@
#include "segment.h"
#include "xattr.h"
#define CREATE_TRACE_POINTS
#include <trace/events/f2fs.h>
static struct kmem_cache *f2fs_inode_cachep;
enum {
......@@ -134,6 +137,8 @@ int f2fs_sync_fs(struct super_block *sb, int sync)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
trace_f2fs_sync_fs(sb, sync);
if (!sbi->s_dirty && !get_pages(sbi, F2FS_DIRTY_NODES))
return 0;
......
#undef TRACE_SYSTEM
#define TRACE_SYSTEM f2fs
#if !defined(_TRACE_F2FS_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_F2FS_H
#include <linux/tracepoint.h>
#define show_dev(entry) MAJOR(entry->dev), MINOR(entry->dev)
#define show_dev_ino(entry) show_dev(entry), (unsigned long)entry->ino
DECLARE_EVENT_CLASS(f2fs__inode,
TP_PROTO(struct inode *inode),
TP_ARGS(inode),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(ino_t, ino)
__field(ino_t, pino)
__field(umode_t, mode)
__field(loff_t, size)
__field(unsigned int, nlink)
__field(blkcnt_t, blocks)
__field(__u8, advise)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->pino = F2FS_I(inode)->i_pino;
__entry->mode = inode->i_mode;
__entry->nlink = inode->i_nlink;
__entry->size = inode->i_size;
__entry->blocks = inode->i_blocks;
__entry->advise = F2FS_I(inode)->i_advise;
),
TP_printk("dev = (%d,%d), ino = %lu, pino = %lu, i_mode = 0x%hx, "
"i_size = %lld, i_nlink = %u, i_blocks = %llu, i_advise = 0x%x",
show_dev_ino(__entry),
(unsigned long)__entry->pino,
__entry->mode,
__entry->size,
(unsigned int)__entry->nlink,
(unsigned long long)__entry->blocks,
(unsigned char)__entry->advise)
);
DECLARE_EVENT_CLASS(f2fs__inode_exit,
TP_PROTO(struct inode *inode, int ret),
TP_ARGS(inode, ret),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(ino_t, ino)
__field(int, ret)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->ret = ret;
),
TP_printk("dev = (%d,%d), ino = %lu, ret = %d",
show_dev_ino(__entry),
__entry->ret)
);
DEFINE_EVENT(f2fs__inode, f2fs_sync_file_enter,
TP_PROTO(struct inode *inode),
TP_ARGS(inode)
);
TRACE_EVENT(f2fs_sync_file_exit,
TP_PROTO(struct inode *inode, bool need_cp, int datasync, int ret),
TP_ARGS(inode, need_cp, datasync, ret),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(ino_t, ino)
__field(bool, need_cp)
__field(int, datasync)
__field(int, ret)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->need_cp = need_cp;
__entry->datasync = datasync;
__entry->ret = ret;
),
TP_printk("dev = (%d,%d), ino = %lu, checkpoint is %s, "
"datasync = %d, ret = %d",
show_dev_ino(__entry),
__entry->need_cp ? "needed" : "not needed",
__entry->datasync,
__entry->ret)
);
TRACE_EVENT(f2fs_sync_fs,
TP_PROTO(struct super_block *sb, int wait),
TP_ARGS(sb, wait),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(int, dirty)
__field(int, wait)
),
TP_fast_assign(
__entry->dev = sb->s_dev;
__entry->dirty = F2FS_SB(sb)->s_dirty;
__entry->wait = wait;
),
TP_printk("dev = (%d,%d), superblock is %s, wait = %d",
show_dev(__entry),
__entry->dirty ? "dirty" : "not dirty",
__entry->wait)
);
DEFINE_EVENT(f2fs__inode, f2fs_iget,
TP_PROTO(struct inode *inode),
TP_ARGS(inode)
);
DEFINE_EVENT(f2fs__inode_exit, f2fs_iget_exit,
TP_PROTO(struct inode *inode, int ret),
TP_ARGS(inode, ret)
);
DEFINE_EVENT(f2fs__inode, f2fs_evict_inode,
TP_PROTO(struct inode *inode),
TP_ARGS(inode)
);
TRACE_EVENT(f2fs_unlink_enter,
TP_PROTO(struct inode *dir, struct dentry *dentry),
TP_ARGS(dir, dentry),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(ino_t, ino)
__field(loff_t, size)
__field(blkcnt_t, blocks)
__field(const char *, name)
),
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->ino = dir->i_ino;
__entry->size = dir->i_size;
__entry->blocks = dir->i_blocks;
__entry->name = dentry->d_name.name;
),
TP_printk("dev = (%d,%d), dir ino = %lu, i_size = %lld, "
"i_blocks = %llu, name = %s",
show_dev_ino(__entry),
__entry->size,
(unsigned long long)__entry->blocks,
__entry->name)
);
DEFINE_EVENT(f2fs__inode_exit, f2fs_unlink_exit,
TP_PROTO(struct inode *inode, int ret),
TP_ARGS(inode, ret)
);
#endif /* _TRACE_F2FS_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
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