[RFC patch 40/41] EXT4: instrumentation with tracepoints

From: Mathieu Desnoyers
Date: Thu Mar 05 2009 - 18:38:48 EST

Took the instrumentation from "ext4: Add markers for better debuggability" and
moved it to tracepoints.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
CC: Theodore Ts'o <tytso@xxxxxxx>
CC: Stephen C. Tweedie <sct@xxxxxxxxxx>
CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
CC: Ext4 Developers List <linux-ext4@xxxxxxxxxxxxxxx>
---
fs/ext4/fsync.c | 8 +--
fs/ext4/ialloc.c | 17 +++---
fs/ext4/inode.c | 79 +++++++++----------------------
fs/ext4/mballoc.c | 71 +++++++++-------------------
fs/ext4/mballoc.h | 2
fs/ext4/super.c | 6 +-
include/trace/ext4.h | 129 +++++++++++++++++++++++++++++++++++++++++++++++++++
7 files changed, 194 insertions(+), 118 deletions(-)

Index: linux-2.6-lttng/fs/ext4/fsync.c
===================================================================
--- linux-2.6-lttng.orig/fs/ext4/fsync.c 2009-03-05 15:21:54.000000000 -0500
+++ linux-2.6-lttng/fs/ext4/fsync.c 2009-03-05 15:49:28.000000000 -0500
@@ -28,10 +28,12 @@
#include <linux/writeback.h>
#include <linux/jbd2.h>
#include <linux/blkdev.h>
-#include <linux/marker.h>
+#include <trace/ext4.h>
#include "ext4.h"
#include "ext4_jbd2.h"

+DEFINE_TRACE(ext4_sync_file);
+
/*
* akpm: A new design for ext4_sync_file().
*
@@ -52,9 +54,7 @@ int ext4_sync_file(struct file *file, st

J_ASSERT(ext4_journal_current_handle() == NULL);

- trace_mark(ext4_sync_file, "dev %s datasync %d ino %ld parent %ld",
- inode->i_sb->s_id, datasync, inode->i_ino,
- dentry->d_parent->d_inode->i_ino);
+ trace_ext4_sync_file(file, dentry, datasync);

/*
* data=writeback:
Index: linux-2.6-lttng/fs/ext4/ialloc.c
===================================================================
--- linux-2.6-lttng.orig/fs/ext4/ialloc.c 2009-03-05 15:21:54.000000000 -0500
+++ linux-2.6-lttng/fs/ext4/ialloc.c 2009-03-05 15:49:28.000000000 -0500
@@ -22,6 +22,7 @@
#include <linux/random.h>
#include <linux/bitops.h>
#include <linux/blkdev.h>
+#include <trace/ext4.h>
#include <asm/byteorder.h>
#include "ext4.h"
#include "ext4_jbd2.h"
@@ -29,6 +30,10 @@
#include "acl.h"
#include "group.h"

+DEFINE_TRACE(ext4_free_inode);
+DEFINE_TRACE(ext4_request_inode);
+DEFINE_TRACE(ext4_allocate_inode);
+
/*
* ialloc.c contains the inodes allocation and deallocation routines
*/
@@ -210,11 +215,7 @@ void ext4_free_inode(handle_t *handle, s

ino = inode->i_ino;
ext4_debug("freeing inode %lu\n", ino);
- trace_mark(ext4_free_inode,
- "dev %s ino %lu mode %d uid %lu gid %lu bocks %llu",
- sb->s_id, inode->i_ino, inode->i_mode,
- (unsigned long) inode->i_uid, (unsigned long) inode->i_gid,
- (unsigned long long) inode->i_blocks);
+ trace_ext4_free_inode(inode);

/*
* Note: we must free any quota before locking the superblock,
@@ -703,8 +704,7 @@ struct inode *ext4_new_inode(handle_t *h
return ERR_PTR(-EPERM);

sb = dir->i_sb;
- trace_mark(ext4_request_inode, "dev %s dir %lu mode %d", sb->s_id,
- dir->i_ino, mode);
+ trace_ext4_request_inode(dir, mode);
inode = new_inode(sb);
if (!inode)
return ERR_PTR(-ENOMEM);
@@ -939,8 +939,7 @@ got:
}

ext4_debug("allocating inode %lu\n", inode->i_ino);
- trace_mark(ext4_allocate_inode, "dev %s ino %lu dir %lu mode %d",
- sb->s_id, inode->i_ino, dir->i_ino, mode);
+ trace_ext4_allocate_inode(inode, dir, mode);
goto really_out;
fail:
ext4_std_error(sb, err);
Index: linux-2.6-lttng/fs/ext4/inode.c
===================================================================
--- linux-2.6-lttng.orig/fs/ext4/inode.c 2009-03-05 15:21:54.000000000 -0500
+++ linux-2.6-lttng/fs/ext4/inode.c 2009-03-05 15:49:28.000000000 -0500
@@ -37,11 +37,24 @@
#include <linux/namei.h>
#include <linux/uio.h>
#include <linux/bio.h>
+#include <trace/ext4.h>
#include "ext4_jbd2.h"
#include "xattr.h"
#include "acl.h"
#include "ext4_extents.h"

+DEFINE_TRACE(ext4_write_begin);
+DEFINE_TRACE(ext4_ordered_write_end);
+DEFINE_TRACE(ext4_writeback_write_end);
+DEFINE_TRACE(ext4_journalled_write_end);
+DEFINE_TRACE(ext4_da_writepage);
+DEFINE_TRACE(ext4_da_writepages);
+DEFINE_TRACE(ext4_da_writepages_result);
+DEFINE_TRACE(ext4_da_write_begin);
+DEFINE_TRACE(ext4_da_write_end);
+DEFINE_TRACE(ext4_normal_writepage);
+DEFINE_TRACE(ext4_journalled_writepage);
+
#define MPAGE_DA_EXTENT_TAIL 0x01

static inline int ext4_begin_ordered_truncate(struct inode *inode,
@@ -1353,10 +1366,7 @@ static int ext4_write_begin(struct file
pgoff_t index;
unsigned from, to;

- trace_mark(ext4_write_begin,
- "dev %s ino %lu pos %llu len %u flags %u",
- inode->i_sb->s_id, inode->i_ino,
- (unsigned long long) pos, len, flags);
+ trace_ext4_write_begin(inode, pos, len, flags);
index = pos >> PAGE_CACHE_SHIFT;
from = pos & (PAGE_CACHE_SIZE - 1);
to = from + len;
@@ -1432,10 +1442,7 @@ static int ext4_ordered_write_end(struct
struct inode *inode = mapping->host;
int ret = 0, ret2;

- trace_mark(ext4_ordered_write_end,
- "dev %s ino %lu pos %llu len %u copied %u",
- inode->i_sb->s_id, inode->i_ino,
- (unsigned long long) pos, len, copied);
+ trace_ext4_ordered_write_end(inode, pos, len, copied);
ret = ext4_jbd2_file_inode(handle, inode);

if (ret == 0) {
@@ -1474,10 +1481,7 @@ static int ext4_writeback_write_end(stru
int ret = 0, ret2;
loff_t new_i_size;

- trace_mark(ext4_writeback_write_end,
- "dev %s ino %lu pos %llu len %u copied %u",
- inode->i_sb->s_id, inode->i_ino,
- (unsigned long long) pos, len, copied);
+ trace_ext4_writeback_write_end(inode, pos, len, copied);
new_i_size = pos + copied;
if (new_i_size > EXT4_I(inode)->i_disksize) {
ext4_update_i_disksize(inode, new_i_size);
@@ -1513,10 +1517,7 @@ static int ext4_journalled_write_end(str
unsigned from, to;
loff_t new_i_size;

- trace_mark(ext4_journalled_write_end,
- "dev %s ino %lu pos %llu len %u copied %u",
- inode->i_sb->s_id, inode->i_ino,
- (unsigned long long) pos, len, copied);
+ trace_ext4_journalled_write_end(inode, pos, len, copied);
from = pos & (PAGE_CACHE_SIZE - 1);
to = from + len;

@@ -2333,9 +2334,7 @@ static int ext4_da_writepage(struct page
struct buffer_head *page_bufs;
struct inode *inode = page->mapping->host;

- trace_mark(ext4_da_writepage,
- "dev %s ino %lu page_index %lu",
- inode->i_sb->s_id, inode->i_ino, page->index);
+ trace_ext4_da_writepage(inode, page);
size = i_size_read(inode);
if (page->index == size >> PAGE_CACHE_SHIFT)
len = size & ~PAGE_CACHE_MASK;
@@ -2447,19 +2446,7 @@ static int ext4_da_writepages(struct add
int needed_blocks, ret = 0, nr_to_writebump = 0;
struct ext4_sb_info *sbi = EXT4_SB(mapping->host->i_sb);

- trace_mark(ext4_da_writepages,
- "dev %s ino %lu nr_t_write %ld "
- "pages_skipped %ld range_start %llu "
- "range_end %llu nonblocking %d "
- "for_kupdate %d for_reclaim %d "
- "for_writepages %d range_cyclic %d",
- inode->i_sb->s_id, inode->i_ino,
- wbc->nr_to_write, wbc->pages_skipped,
- (unsigned long long) wbc->range_start,
- (unsigned long long) wbc->range_end,
- wbc->nonblocking, wbc->for_kupdate,
- wbc->for_reclaim, wbc->for_writepages,
- wbc->range_cyclic);
+ trace_ext4_da_writepages(inode, wbc);

/*
* No pages to write? This is mainly a kludge to avoid starting
@@ -2595,14 +2582,7 @@ out_writepages:
if (!no_nrwrite_index_update)
wbc->no_nrwrite_index_update = 0;
wbc->nr_to_write -= nr_to_writebump;
- trace_mark(ext4_da_writepage_result,
- "dev %s ino %lu ret %d pages_written %d "
- "pages_skipped %ld congestion %d "
- "more_io %d no_nrwrite_index_update %d",
- inode->i_sb->s_id, inode->i_ino, ret,
- pages_written, wbc->pages_skipped,
- wbc->encountered_congestion, wbc->more_io,
- wbc->no_nrwrite_index_update);
+ trace_ext4_da_writepages_result(inode, wbc, ret, pages_written);
return ret;
}

@@ -2654,11 +2634,7 @@ static int ext4_da_write_begin(struct fi
len, flags, pagep, fsdata);
}
*fsdata = (void *)0;
-
- trace_mark(ext4_da_write_begin,
- "dev %s ino %lu pos %llu len %u flags %u",
- inode->i_sb->s_id, inode->i_ino,
- (unsigned long long) pos, len, flags);
+ trace_ext4_da_write_begin(inode, pos, len, flags);
retry:
/*
* With delayed allocation, we don't log the i_disksize update
@@ -2751,10 +2727,7 @@ static int ext4_da_write_end(struct file
}
}

- trace_mark(ext4_da_write_end,
- "dev %s ino %lu pos %llu len %u copied %u",
- inode->i_sb->s_id, inode->i_ino,
- (unsigned long long) pos, len, copied);
+ trace_ext4_da_write_end(inode, pos, len, copied);
start = pos & (PAGE_CACHE_SIZE - 1);
end = start + copied - 1;

@@ -2965,9 +2938,7 @@ static int ext4_normal_writepage(struct
loff_t size = i_size_read(inode);
loff_t len;

- trace_mark(ext4_normal_writepage,
- "dev %s ino %lu page_index %lu",
- inode->i_sb->s_id, inode->i_ino, page->index);
+ trace_ext4_normal_writepage(inode, page);
J_ASSERT(PageLocked(page));
if (page->index == size >> PAGE_CACHE_SHIFT)
len = size & ~PAGE_CACHE_MASK;
@@ -3053,9 +3024,7 @@ static int ext4_journalled_writepage(str
loff_t size = i_size_read(inode);
loff_t len;

- trace_mark(ext4_journalled_writepage,
- "dev %s ino %lu page_index %lu",
- inode->i_sb->s_id, inode->i_ino, page->index);
+ trace_ext4_journalled_writepage(inode, page);
J_ASSERT(PageLocked(page));
if (page->index == size >> PAGE_CACHE_SHIFT)
len = size & ~PAGE_CACHE_MASK;
Index: linux-2.6-lttng/fs/ext4/mballoc.c
===================================================================
--- linux-2.6-lttng.orig/fs/ext4/mballoc.c 2009-03-05 15:21:54.000000000 -0500
+++ linux-2.6-lttng/fs/ext4/mballoc.c 2009-03-05 15:49:28.000000000 -0500
@@ -343,6 +343,17 @@ static void release_blocks_on_commit(jou



+DEFINE_TRACE(ext4_discard_blocks);
+DEFINE_TRACE(ext4_mb_new_inode_pa);
+DEFINE_TRACE(ext4_mb_new_group_pa);
+DEFINE_TRACE(ext4_mb_release_inode_pa);
+DEFINE_TRACE(ext4_mb_release_group_pa);
+DEFINE_TRACE(ext4_discard_preallocations);
+DEFINE_TRACE(ext4_mb_discard_preallocations);
+DEFINE_TRACE(ext4_request_blocks);
+DEFINE_TRACE(ext4_allocate_blocks);
+DEFINE_TRACE(ext4_free_blocks);
+
static inline void *mb_correct_addr_and_bit(int *bit, void *addr)
{
#if BITS_PER_LONG == 64
@@ -2878,9 +2889,8 @@ static void release_blocks_on_commit(jou
discard_block = (ext4_fsblk_t) entry->group * EXT4_BLOCKS_PER_GROUP(sb)
+ entry->start_blk
+ le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block);
- trace_mark(ext4_discard_blocks, "dev %s blk %llu count %u",
- sb->s_id, (unsigned long long) discard_block,
- entry->count);
+ trace_ext4_discard_blocks(sb, (unsigned long long)discard_block,
+ entry);
sb_issue_discard(sb, discard_block, entry->count);

kmem_cache_free(ext4_free_ext_cachep, entry);
@@ -3700,10 +3710,7 @@ ext4_mb_new_inode_pa(struct ext4_allocat

mb_debug("new inode pa %p: %llu/%u for %u\n", pa,
pa->pa_pstart, pa->pa_len, pa->pa_lstart);
- trace_mark(ext4_mb_new_inode_pa,
- "dev %s ino %lu pstart %llu len %u lstart %u",
- sb->s_id, ac->ac_inode->i_ino,
- pa->pa_pstart, pa->pa_len, pa->pa_lstart);
+ trace_ext4_mb_new_inode_pa(ac, pa);

ext4_mb_use_inode_pa(ac, pa);
atomic_add(pa->pa_free, &EXT4_SB(sb)->s_mb_preallocated);
@@ -3762,9 +3769,8 @@ ext4_mb_new_group_pa(struct ext4_allocat
pa->pa_linear = 1;

mb_debug("new group pa %p: %llu/%u for %u\n", pa,
- pa->pa_pstart, pa->pa_len, pa->pa_lstart);
- trace_mark(ext4_mb_new_group_pa, "dev %s pstart %llu len %u lstart %u",
- sb->s_id, pa->pa_pstart, pa->pa_len, pa->pa_lstart);
+ pa->pa_pstart, pa->pa_len, pa->pa_lstart);
+ trace_ext4_mb_new_group_pa(ac, pa);

ext4_mb_use_group_pa(ac, pa);
atomic_add(pa->pa_free, &EXT4_SB(sb)->s_mb_preallocated);
@@ -3854,10 +3860,8 @@ ext4_mb_release_inode_pa(struct ext4_bud
ext4_mb_store_history(ac);
}

- trace_mark(ext4_mb_release_inode_pa,
- "dev %s ino %lu block %llu count %u",
- sb->s_id, pa->pa_inode->i_ino, grp_blk_start + bit,
- next - bit);
+ trace_ext4_mb_release_inode_pa(ac, pa, grp_blk_start + bit,
+ next - bit);
mb_free_blocks(pa->pa_inode, e4b, bit, next - bit);
bit = next + 1;
}
@@ -3891,8 +3895,7 @@ ext4_mb_release_group_pa(struct ext4_bud
if (ac)
ac->ac_op = EXT4_MB_HISTORY_DISCARD;

- trace_mark(ext4_mb_release_group_pa, "dev %s pstart %llu len %d",
- sb->s_id, pa->pa_pstart, pa->pa_len);
+ trace_ext4_mb_release_group_pa(ac, pa);
BUG_ON(pa->pa_deleted == 0);
ext4_get_group_no_and_offset(sb, pa->pa_pstart, &group, &bit);
BUG_ON(group != e4b->bd_group && pa->pa_len != 0);
@@ -4058,8 +4061,7 @@ void ext4_discard_preallocations(struct
}

mb_debug("discard preallocation for inode %lu\n", inode->i_ino);
- trace_mark(ext4_discard_preallocations, "dev %s ino %lu", sb->s_id,
- inode->i_ino);
+ trace_ext4_discard_preallocations(inode);

INIT_LIST_HEAD(&list);

@@ -4515,8 +4517,7 @@ static int ext4_mb_discard_preallocation
int ret;
int freed = 0;

- trace_mark(ext4_mb_discard_preallocations, "dev %s needed %d",
- sb->s_id, needed);
+ trace_ext4_mb_discard_preallocations(sb, needed);
for (i = 0; i < EXT4_SB(sb)->s_groups_count && needed > 0; i++) {
ret = ext4_mb_discard_group_preallocations(sb, i, needed);
freed += ret;
@@ -4545,17 +4546,7 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t
sb = ar->inode->i_sb;
sbi = EXT4_SB(sb);

- trace_mark(ext4_request_blocks, "dev %s flags %u len %u ino %lu "
- "lblk %llu goal %llu lleft %llu lright %llu "
- "pleft %llu pright %llu ",
- sb->s_id, ar->flags, ar->len,
- ar->inode ? ar->inode->i_ino : 0,
- (unsigned long long) ar->logical,
- (unsigned long long) ar->goal,
- (unsigned long long) ar->lleft,
- (unsigned long long) ar->lright,
- (unsigned long long) ar->pleft,
- (unsigned long long) ar->pright);
+ trace_ext4_request_blocks(ar);

if (!EXT4_I(ar->inode)->i_delalloc_reserved_flag) {
/*
@@ -4659,18 +4650,7 @@ out3:
reserv_blks);
}

- trace_mark(ext4_allocate_blocks,
- "dev %s block %llu flags %u len %u ino %lu "
- "logical %llu goal %llu lleft %llu lright %llu "
- "pleft %llu pright %llu ",
- sb->s_id, (unsigned long long) block,
- ar->flags, ar->len, ar->inode ? ar->inode->i_ino : 0,
- (unsigned long long) ar->logical,
- (unsigned long long) ar->goal,
- (unsigned long long) ar->lleft,
- (unsigned long long) ar->lright,
- (unsigned long long) ar->pleft,
- (unsigned long long) ar->pright);
+ trace_ext4_allocate_blocks(ar, (unsigned long long)block);

return block;
}
@@ -4805,10 +4785,7 @@ void ext4_mb_free_blocks(handle_t *handl
}

ext4_debug("freeing block %lu\n", block);
- trace_mark(ext4_free_blocks,
- "dev %s block %llu count %lu metadata %d ino %lu",
- sb->s_id, (unsigned long long) block, count, metadata,
- inode ? inode->i_ino : 0);
+ trace_ext4_free_blocks(inode, block, count, metadata);

ac = kmem_cache_alloc(ext4_ac_cachep, GFP_NOFS);
if (ac) {
Index: linux-2.6-lttng/fs/ext4/mballoc.h
===================================================================
--- linux-2.6-lttng.orig/fs/ext4/mballoc.h 2009-03-05 15:21:54.000000000 -0500
+++ linux-2.6-lttng/fs/ext4/mballoc.h 2009-03-05 15:49:28.000000000 -0500
@@ -19,8 +19,8 @@
#include <linux/seq_file.h>
#include <linux/version.h>
#include <linux/blkdev.h>
-#include <linux/marker.h>
#include <linux/mutex.h>
+#include <trace/ext4.h>
#include "ext4_jbd2.h"
#include "ext4.h"
#include "group.h"
Index: linux-2.6-lttng/fs/ext4/super.c
===================================================================
--- linux-2.6-lttng.orig/fs/ext4/super.c 2009-03-05 15:21:54.000000000 -0500
+++ linux-2.6-lttng/fs/ext4/super.c 2009-03-05 15:49:28.000000000 -0500
@@ -35,9 +35,9 @@
#include <linux/quotaops.h>
#include <linux/seq_file.h>
#include <linux/proc_fs.h>
-#include <linux/marker.h>
#include <linux/log2.h>
#include <linux/crc16.h>
+#include <trace/ext4.h>
#include <asm/uaccess.h>

#include "ext4.h"
@@ -47,6 +47,8 @@
#include "namei.h"
#include "group.h"

+DEFINE_TRACE(ext4_sync_fs);
+
struct proc_dir_entry *ext4_proc_root;

static int ext4_load_journal(struct super_block *, struct ext4_super_block *,
@@ -3048,7 +3050,7 @@ static int ext4_sync_fs(struct super_blo
int ret = 0;
tid_t target;

- trace_mark(ext4_sync_fs, "dev %s wait %d", sb->s_id, wait);
+ trace_ext4_sync_fs(sb, wait);
sb->s_dirt = 0;
if (EXT4_SB(sb)->s_journal) {
if (jbd2_journal_start_commit(EXT4_SB(sb)->s_journal,
Index: linux-2.6-lttng/include/trace/ext4.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6-lttng/include/trace/ext4.h 2009-03-05 15:49:28.000000000 -0500
@@ -0,0 +1,129 @@
+#ifndef _TRACE_EXT4_H
+#define _TRACE_EXT4_H
+
+#include <linux/tracepoint.h>
+
+struct ext4_free_data;
+struct ext4_prealloc_space;
+struct ext4_allocation_context;
+struct ext4_allocation_request;
+
+DECLARE_TRACE(ext4_free_inode,
+ TPPROTO(struct inode *inode),
+ TPARGS(inode));
+
+DECLARE_TRACE(ext4_request_inode,
+ TPPROTO(struct inode *dir, int mode),
+ TPARGS(dir, mode));
+
+DECLARE_TRACE(ext4_allocate_inode,
+ TPPROTO(struct inode *inode, struct inode *dir, int mode),
+ TPARGS(inode, dir, mode));
+
+DECLARE_TRACE(ext4_write_begin,
+ TPPROTO(struct inode *inode, loff_t pos, unsigned int len,
+ unsigned int flags),
+ TPARGS(inode, pos, len, flags));
+
+DECLARE_TRACE(ext4_ordered_write_end,
+ TPPROTO(struct inode *inode, loff_t pos, unsigned int len,
+ unsigned int copied),
+ TPARGS(inode, pos, len, copied));
+
+DECLARE_TRACE(ext4_writeback_write_end,
+ TPPROTO(struct inode *inode, loff_t pos, unsigned int len,
+ unsigned int copied),
+ TPARGS(inode, pos, len, copied));
+
+DECLARE_TRACE(ext4_journalled_write_end,
+ TPPROTO(struct inode *inode, loff_t pos, unsigned int len,
+ unsigned int copied),
+ TPARGS(inode, pos, len, copied));
+
+DECLARE_TRACE(ext4_da_writepage,
+ TPPROTO(struct inode *inode, struct page *page),
+ TPARGS(inode, page));
+
+DECLARE_TRACE(ext4_da_writepages,
+ TPPROTO(struct inode *inode, struct writeback_control *wbc),
+ TPARGS(inode, wbc));
+
+DECLARE_TRACE(ext4_da_writepages_result,
+ TPPROTO(struct inode *inode, struct writeback_control *wbc,
+ int ret, int pages_written),
+ TPARGS(inode, wbc, ret, pages_written));
+
+DECLARE_TRACE(ext4_da_write_begin,
+ TPPROTO(struct inode *inode, loff_t pos, unsigned int len,
+ unsigned int flags),
+ TPARGS(inode, pos, len, flags));
+
+DECLARE_TRACE(ext4_da_write_end,
+ TPPROTO(struct inode *inode, loff_t pos, unsigned int len,
+ unsigned int copied),
+ TPARGS(inode, pos, len, copied));
+
+DECLARE_TRACE(ext4_normal_writepage,
+ TPPROTO(struct inode *inode, struct page *page),
+ TPARGS(inode, page));
+
+DECLARE_TRACE(ext4_journalled_writepage,
+ TPPROTO(struct inode *inode, struct page *page),
+ TPARGS(inode, page));
+
+DECLARE_TRACE(ext4_discard_blocks,
+ TPPROTO(struct super_block *sb, unsigned long long blk,
+ struct ext4_free_data *entry),
+ TPARGS(sb, blk, entry));
+
+DECLARE_TRACE(ext4_mb_new_inode_pa,
+ TPPROTO(struct ext4_allocation_context *ac,
+ struct ext4_prealloc_space *pa),
+ TPARGS(ac, pa));
+
+DECLARE_TRACE(ext4_mb_new_group_pa,
+ TPPROTO(struct ext4_allocation_context *ac,
+ struct ext4_prealloc_space *pa),
+ TPARGS(ac, pa));
+
+DECLARE_TRACE(ext4_mb_release_inode_pa,
+ TPPROTO(struct ext4_allocation_context *ac,
+ struct ext4_prealloc_space *pa,
+ unsigned long long block, unsigned int count),
+ TPARGS(ac, pa, block, count));
+
+DECLARE_TRACE(ext4_mb_release_group_pa,
+ TPPROTO(struct ext4_allocation_context *ac,
+ struct ext4_prealloc_space *pa),
+ TPARGS(ac, pa));
+
+DECLARE_TRACE(ext4_discard_preallocations,
+ TPPROTO(struct inode *inode),
+ TPARGS(inode));
+
+DECLARE_TRACE(ext4_mb_discard_preallocations,
+ TPPROTO(struct super_block *sb, int needed),
+ TPARGS(sb, needed));
+
+DECLARE_TRACE(ext4_request_blocks,
+ TPPROTO(struct ext4_allocation_request *ar),
+ TPARGS(ar));
+
+DECLARE_TRACE(ext4_allocate_blocks,
+ TPPROTO(struct ext4_allocation_request *ar, unsigned long long block),
+ TPARGS(ar, block));
+
+DECLARE_TRACE(ext4_free_blocks,
+ TPPROTO(struct inode *inode, unsigned long block, unsigned long count,
+ int metadata),
+ TPARGS(inode, block, count, metadata));
+
+DECLARE_TRACE(ext4_sync_file,
+ TPPROTO(struct file *file, struct dentry *dentry, int datasync),
+ TPARGS(file, dentry, datasync));
+
+DECLARE_TRACE(ext4_sync_fs,
+ TPPROTO(struct super_block *sb, int wait),
+ TPARGS(sb, wait));
+
+#endif

--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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