ext4: convert instrumentation from markers to tracepoints

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

6 files changed, 55 insertions, 121 deletions

diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index 5afe437..83cf641 100644
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -28,10 +28,12 @@
 #include <linux/writeback.h>
 #include <linux/jbd2.h>
 #include <linux/blkdev.h>
-#include <linux/marker.h>
+
 #include "ext4.h"
 #include "ext4_jbd2.h"
 
+#include <trace/events/ext4.h>
+
 /*
  * akpm: A new design for ext4_sync_file().
  *
@@ -52,9 +54,7 @@ int ext4_sync_file(struct file *file, struct dentry *dentry, int datasync)
 
 	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:
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 3743bd8..7d502f3 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -23,11 +23,14 @@
 #include <linux/bitops.h>
 #include <linux/blkdev.h>
 #include <asm/byteorder.h>
+
 #include "ext4.h"
 #include "ext4_jbd2.h"
 #include "xattr.h"
 #include "acl.h"
 
+#include <trace/events/ext4.h>
+
 /*
  * ialloc.c contains the inodes allocation and deallocation routines
  */
@@ -208,11 +211,7 @@ void ext4_free_inode(handle_t *handle, struct inode *inode)
 
 	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,
@@ -815,8 +814,7 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, int mode)
 
 	sb = dir->i_sb;
 	ngroups = ext4_get_groups_count(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);
@@ -1047,8 +1045,7 @@ 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);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 875db94..2418ad3 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -37,11 +37,14 @@
 #include <linux/namei.h>
 #include <linux/uio.h>
 #include <linux/bio.h>
+
 #include "ext4_jbd2.h"
 #include "xattr.h"
 #include "acl.h"
 #include "ext4_extents.h"
 
+#include <trace/events/ext4.h>
+
 #define MPAGE_DA_EXTENT_TAIL 0x01
 
 static inline int ext4_begin_ordered_truncate(struct inode *inode,
@@ -1466,10 +1469,7 @@ static int ext4_write_begin(struct file *file, struct address_space *mapping,
  	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);
 	/*
 	 * Reserve one block more for addition to orphan list in case
 	 * we allocate blocks but write fails for some reason
@@ -1611,10 +1611,7 @@ static int ext4_ordered_write_end(struct file *file,
 	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) {
@@ -1658,10 +1655,7 @@ static int ext4_writeback_write_end(struct file *file,
 	struct inode *inode = mapping->host;
 	int ret = 0, ret2;
 
-	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);
 	ret2 = ext4_generic_write_end(file, mapping, pos, len, copied,
 							page, fsdata);
 	copied = ret2;
@@ -1705,10 +1699,7 @@ static int ext4_journalled_write_end(struct file *file,
 	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;
 
@@ -2554,9 +2545,7 @@ static int ext4_da_writepage(struct page *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;
@@ -2667,19 +2656,7 @@ static int ext4_da_writepages(struct address_space *mapping,
 	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
@@ -2845,14 +2822,7 @@ 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;
 }
 
@@ -2904,11 +2874,7 @@ static int ext4_da_write_begin(struct file *file, struct address_space *mapping,
 					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
@@ -3001,10 +2967,7 @@ static int ext4_da_write_end(struct file *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;
 
@@ -3255,9 +3218,7 @@ static int ext4_normal_writepage(struct page *page,
 	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;
@@ -3343,9 +3304,7 @@ static int ext4_journalled_writepage(struct page *page,
 	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;
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index ed8482e..8d98070 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -22,6 +22,8 @@
  */
 
 #include "mballoc.h"
+#include <trace/events/ext4.h>
+
 /*
  * MUSTDO:
  *   - test ext4_ext_search_left() and ext4_ext_search_right()
@@ -340,8 +342,6 @@ static void ext4_mb_generate_from_freelist(struct super_block *sb, void *bitmap,
 						ext4_group_t group);
 static void release_blocks_on_commit(journal_t *journal, transaction_t *txn);
 
-
-
 static inline void *mb_correct_addr_and_bit(int *bit, void *addr)
 {
 #if BITS_PER_LONG == 64
@@ -2859,9 +2859,8 @@ static void release_blocks_on_commit(journal_t *journal, transaction_t *txn)
 		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->count);
 		sb_issue_discard(sb, discard_block, entry->count);
 
 		kmem_cache_free(ext4_free_ext_cachep, entry);
@@ -3629,10 +3628,7 @@ ext4_mb_new_inode_pa(struct ext4_allocation_context *ac)
 
 	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);
@@ -3691,9 +3687,8 @@ ext4_mb_new_group_pa(struct ext4_allocation_context *ac)
 	pa->pa_type = MB_GROUP_PA;
 
 	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);
@@ -3783,10 +3778,8 @@ ext4_mb_release_inode_pa(struct ext4_buddy *e4b, struct buffer_head *bitmap_bh,
 			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;
 	}
@@ -3820,8 +3813,7 @@ ext4_mb_release_group_pa(struct ext4_buddy *e4b,
 	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);
@@ -3889,6 +3881,8 @@ ext4_mb_discard_group_preallocations(struct super_block *sb,
 
 	INIT_LIST_HEAD(&list);
 	ac = kmem_cache_alloc(ext4_ac_cachep, GFP_NOFS);
+	if (ac)
+		ac->ac_sb = sb;
 repeat:
 	ext4_lock_group(sb, group);
 	list_for_each_entry_safe(pa, tmp,
@@ -3987,12 +3981,15 @@ void ext4_discard_preallocations(struct inode *inode)
 	}
 
 	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);
 
 	ac = kmem_cache_alloc(ext4_ac_cachep, GFP_NOFS);
+	if (ac) {
+		ac->ac_sb = sb;
+		ac->ac_inode = inode;
+	}
 repeat:
 	/* first, collect all pa's in the inode */
 	spin_lock(&ei->i_prealloc_lock);
@@ -4276,6 +4273,8 @@ ext4_mb_discard_lg_preallocations(struct super_block *sb,
 
 	INIT_LIST_HEAD(&discard_list);
 	ac = kmem_cache_alloc(ext4_ac_cachep, GFP_NOFS);
+	if (ac)
+		ac->ac_sb = sb;
 
 	spin_lock(&lg->lg_prealloc_lock);
 	list_for_each_entry_rcu(pa, &lg->lg_prealloc_list[order],
@@ -4445,8 +4444,7 @@ static int ext4_mb_discard_preallocations(struct super_block *sb, int needed)
 	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 < ngroups && needed > 0; i++) {
 		ret = ext4_mb_discard_group_preallocations(sb, i, needed);
 		freed += ret;
@@ -4475,17 +4473,7 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
 	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);
 
 	/*
 	 * For delayed allocation, we could skip the ENOSPC and
@@ -4521,7 +4509,10 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
 	}
 
 	ac = kmem_cache_alloc(ext4_ac_cachep, GFP_NOFS);
-	if (!ac) {
+	if (ac) {
+		ac->ac_sb = sb;
+		ac->ac_inode = ar->inode;
+	} else {
 		ar->len = 0;
 		*errp = -ENOMEM;
 		goto out1;
@@ -4594,18 +4585,7 @@ 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;
 }
@@ -4740,10 +4720,7 @@ void ext4_mb_free_blocks(handle_t *handle, struct inode *inode,
 	}
 
 	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) {
diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h
index 75e34f6..c96bb19 100644
--- a/fs/ext4/mballoc.h
+++ b/fs/ext4/mballoc.h
@@ -19,7 +19,6 @@
 #include <linux/seq_file.h>
 #include <linux/version.h>
 #include <linux/blkdev.h>
-#include <linux/marker.h>
 #include <linux/mutex.h>
 #include "ext4_jbd2.h"
 #include "ext4.h"
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 012c425..e8f0b2a 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -37,7 +37,6 @@
 #include <linux/seq_file.h>
 #include <linux/proc_fs.h>
 #include <linux/ctype.h>
-#include <linux/marker.h>
 #include <linux/log2.h>
 #include <linux/crc16.h>
 #include <asm/uaccess.h>
@@ -47,6 +46,9 @@
 #include "xattr.h"
 #include "acl.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/ext4.h>
+
 static int default_mb_history_length = 1000;
 
 module_param_named(default_mb_history_length, default_mb_history_length,
@@ -3346,7 +3348,7 @@ static int ext4_sync_fs(struct super_block *sb, int wait)
 	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);
 	if (jbd2_journal_start_commit(EXT4_SB(sb)->s_journal, &target)) {
 		if (wait)
 			jbd2_log_wait_commit(EXT4_SB(sb)->s_journal, target);