X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=instrumentation%2Fevents%2Flttng-module%2Fwriteback.h;h=7ea3f8a3f2fa974c45540c32d58de5efbdc1105f;hb=380de059eeb77f1778586be0553c801e822c89c1;hp=b3d55387c436a8ad7a137a1e0c2c05ac7c4ce089;hpb=b87700e318c27267890cbd6fb5e50b687279131b;p=lttng-modules.git

diff --git a/instrumentation/events/lttng-module/writeback.h b/instrumentation/events/lttng-module/writeback.h
index b3d55387..7ea3f8a3 100644
--- a/instrumentation/events/lttng-module/writeback.h
+++ b/instrumentation/events/lttng-module/writeback.h
@@ -1,36 +1,19 @@
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM writeback
 
-#if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
-#define _TRACE_WRITEBACK_H
+#if !defined(LTTNG_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
+#define LTTNG_TRACE_WRITEBACK_H
 
+#include "../../../probes/lttng-tracepoint-event.h"
+#include <linux/tracepoint.h>
 #include <linux/backing-dev.h>
 #include <linux/writeback.h>
 #include <linux/version.h>
 
 #ifndef _TRACE_WRITEBACK_DEF_
 #define _TRACE_WRITEBACK_DEF_
-/* Have to duplicate it here from fs/fs-writeback.c */
-struct wb_writeback_work {
-	long nr_pages;
-	struct super_block *sb;
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
-	unsigned long *older_than_this;
-#endif
-	enum writeback_sync_modes sync_mode;
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
-	unsigned int tagged_writepages:1;
-#endif
-	unsigned int for_kupdate:1;
-	unsigned int range_cyclic:1;
-	unsigned int for_background:1;
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
-	enum wb_reason reason;		/* why was writeback initiated? */
-#endif
 
-	struct list_head list;		/* pending work list */
-	struct completion *done;	/* set if the caller waits */
-};
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(4,0,0))
 static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
 {
 	struct super_block *sb = inode->i_sb;
@@ -40,8 +23,26 @@ static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
 
 	return sb->s_bdi;
 }
+#endif /* #if (LINUX_VERSION_CODE < KERNEL_VERSION(4,0,0)) */
+
 #endif
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0))
+#define show_inode_state(state)					\
+	__print_flags(state, "|",				\
+		{I_DIRTY_SYNC,		"I_DIRTY_SYNC"},	\
+		{I_DIRTY_DATASYNC,	"I_DIRTY_DATASYNC"},	\
+		{I_DIRTY_PAGES,		"I_DIRTY_PAGES"},	\
+		{I_NEW,			"I_NEW"},		\
+		{I_WILL_FREE,		"I_WILL_FREE"},		\
+		{I_FREEING,		"I_FREEING"},		\
+		{I_CLEAR,		"I_CLEAR"},		\
+		{I_SYNC,		"I_SYNC"},		\
+		{I_DIRTY_TIME,		"I_DIRTY_TIME"},	\
+		{I_DIRTY_TIME_EXPIRED,	"I_DIRTY_TIME_EXPIRED"}, \
+		{I_REFERENCED,		"I_REFERENCED"}		\
+	)
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)) */
 #define show_inode_state(state)					\
 	__print_flags(state, "|",				\
 		{I_DIRTY_SYNC,		"I_DIRTY_SYNC"},	\
@@ -54,86 +55,223 @@ static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
 		{I_SYNC,		"I_SYNC"},		\
 		{I_REFERENCED,		"I_REFERENCED"}		\
 	)
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)) */
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
-#define WB_WORK_REASON							\
-		{WB_REASON_BACKGROUND,		"background"},		\
-		{WB_REASON_TRY_TO_FREE_PAGES,	"try_to_free_pages"},	\
-		{WB_REASON_SYNC,		"sync"},		\
-		{WB_REASON_PERIODIC,		"periodic"},		\
-		{WB_REASON_LAPTOP_TIMER,	"laptop_timer"},	\
-		{WB_REASON_FREE_MORE_MEM,	"free_more_memory"},	\
-		{WB_REASON_FS_FREE_SPACE,	"fs_free_space"},	\
-		{WB_REASON_FORKER_THREAD,	"forker_thread"}
-#endif
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0))
+
+LTTNG_TRACEPOINT_EVENT(writeback_dirty_page,
+	TP_PROTO(struct page *page, struct address_space *mapping),
+	TP_ARGS(page, mapping),
+	TP_STRUCT__entry (
+		__array_text(char, name, 32)
+		__field(unsigned long, ino)
+		__field(pgoff_t, index)
+	),
+	TP_fast_assign(
+		tp_memcpy(name,
+			mapping ? dev_name(inode_to_bdi(mapping->host)->dev) : "(unknown)", 32)
+		tp_assign(ino, mapping ? mapping->host->i_ino : 0)
+		tp_assign(index, page->index)
+	),
+	TP_printk("bdi %s: ino=%lu index=%lu",
+		__entry->name,
+		__entry->ino,
+		__entry->index
+	)
+)
+
+LTTNG_TRACEPOINT_EVENT_CLASS(writeback_dirty_inode_template,
+	TP_PROTO(struct inode *inode, int flags),
+	TP_ARGS(inode, flags),
+	TP_STRUCT__entry (
+		__array_text(char, name, 32)
+		__field(unsigned long, ino)
+		__field(unsigned long, state)
+		__field(unsigned long, flags)
+	),
+	TP_fast_assign(
+		/* may be called for files on pseudo FSes w/ unregistered bdi */
+		tp_memcpy(name,
+			inode_to_bdi(inode)->dev ?
+				dev_name(inode_to_bdi(inode)->dev) : "(unknown)", 32)
+		tp_assign(ino, inode->i_ino)
+		tp_assign(state, inode->i_state)
+		tp_assign(flags, flags)
+	),
+	TP_printk("bdi %s: ino=%lu flags=%s",
+		__entry->name,
+		__entry->ino,
+		show_inode_state(__entry->flags)
+	)
+)
+#define LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(name) \
+LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_dirty_inode_template, name, \
+	TP_PROTO(struct inode *inode, int flags), \
+	TP_ARGS(inode, flags))
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode_start)
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode)
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_mark_inode_dirty)
+
+LTTNG_TRACEPOINT_EVENT_CLASS(writeback_write_inode_template,
+	TP_PROTO(struct inode *inode, struct writeback_control *wbc),
+	TP_ARGS(inode, wbc),
+	TP_STRUCT__entry (
+		__array_text(char, name, 32)
+		__field(unsigned long, ino)
+		__field(int, sync_mode)
+	),
+	TP_fast_assign(
+		tp_memcpy(name,
+			dev_name(inode_to_bdi(inode)->dev), 32)
+		tp_assign(ino, inode->i_ino)
+		tp_assign(sync_mode, wbc->sync_mode)
+	),
+	TP_printk("bdi %s: ino=%lu sync_mode=%d",
+		__entry->name,
+		__entry->ino,
+		__entry->sync_mode
+	)
+)
+
+#define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(name) \
+LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_write_inode_template, name, \
+	TP_PROTO(struct inode *inode, struct writeback_control *wbc), \
+	TP_ARGS(inode, wbc))
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode_start)
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode)
+
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
+
+LTTNG_TRACEPOINT_EVENT(writeback_dirty_page,
+	TP_PROTO(struct page *page, struct address_space *mapping),
+	TP_ARGS(page, mapping),
+	TP_STRUCT__entry (
+		__array_text(char, name, 32)
+		__field(unsigned long, ino)
+		__field(pgoff_t, index)
+	),
+	TP_fast_assign(
+		tp_memcpy(name,
+			mapping ? dev_name(mapping->backing_dev_info->dev) : "(unknown)", 32)
+		tp_assign(ino, mapping ? mapping->host->i_ino : 0)
+		tp_assign(index, page->index)
+	),
+	TP_printk("bdi %s: ino=%lu index=%lu",
+		__entry->name,
+		__entry->ino,
+		__entry->index
+	)
+)
+
+LTTNG_TRACEPOINT_EVENT_CLASS(writeback_dirty_inode_template,
+	TP_PROTO(struct inode *inode, int flags),
+	TP_ARGS(inode, flags),
+	TP_STRUCT__entry (
+		__array_text(char, name, 32)
+		__field(unsigned long, ino)
+		__field(unsigned long, flags)
+	),
+	TP_fast_assign(
+		/* may be called for files on pseudo FSes w/ unregistered bdi */
+		tp_memcpy(name,
+			inode->i_mapping->backing_dev_info->dev ?
+				dev_name(inode->i_mapping->backing_dev_info->dev) : "(unknown)", 32)
+		tp_assign(ino, inode->i_ino)
+		tp_assign(flags, flags)
+	),
+	TP_printk("bdi %s: ino=%lu flags=%s",
+		__entry->name,
+		__entry->ino,
+		show_inode_state(__entry->flags)
+	)
+)
+#define LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(name) \
+LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_dirty_inode_template, name, \
+	TP_PROTO(struct inode *inode, int flags), \
+	TP_ARGS(inode, flags))
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode_start)
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_DIRTY_INODE_TEMPLATE(writeback_dirty_inode)
+
+LTTNG_TRACEPOINT_EVENT_CLASS(writeback_write_inode_template,
+	TP_PROTO(struct inode *inode, struct writeback_control *wbc),
+	TP_ARGS(inode, wbc),
+	TP_STRUCT__entry (
+		__array_text(char, name, 32)
+		__field(unsigned long, ino)
+		__field(int, sync_mode)
+	),
+	TP_fast_assign(
+		tp_memcpy(name,
+			dev_name(inode->i_mapping->backing_dev_info->dev), 32)
+		tp_assign(ino, inode->i_ino)
+		tp_assign(sync_mode, wbc->sync_mode)
+	),
+	TP_printk("bdi %s: ino=%lu sync_mode=%d",
+		__entry->name,
+		__entry->ino,
+		__entry->sync_mode
+	)
+)
+
+#define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(name) \
+LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_write_inode_template, name, \
+	TP_PROTO(struct inode *inode, struct writeback_control *wbc), \
+	TP_ARGS(inode, wbc))
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode_start)
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_WRITE_INODE(writeback_write_inode)
 
-DECLARE_EVENT_CLASS(writeback_work_class,
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) */
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0))
+
+LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
 	TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
 	TP_ARGS(bdi, work),
 	TP_STRUCT__entry(
-		__array(char, name, 32)
-		__field(long, nr_pages)
-		__field(dev_t, sb_dev)
-		__field(int, sync_mode)
-		__field(int, for_kupdate)
-		__field(int, range_cyclic)
-		__field(int, for_background)
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
-		__field(int, reason)
-#endif
+		__array_text(char, name, 32)
+	),
+	TP_fast_assign(
+		tp_memcpy(name, bdi->dev ? dev_name(bdi->dev) :
+				"(unknown)", 32)
+	),
+	TP_printk("bdi %s",
+		  __entry->name
+	)
+)
+
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)) */
+
+LTTNG_TRACEPOINT_EVENT_CLASS(writeback_work_class,
+	TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work),
+	TP_ARGS(bdi, work),
+	TP_STRUCT__entry(
+		__array_text(char, name, 32)
 	),
 	TP_fast_assign(
 		tp_memcpy(name, dev_name(bdi->dev ? bdi->dev :
 				default_backing_dev_info.dev), 32)
-		tp_assign(nr_pages, work->nr_pages)
-		tp_assign(sb_dev, work->sb ? work->sb->s_dev : 0)
-		tp_assign(sync_mode, work->sync_mode)
-		tp_assign(for_kupdate, work->for_kupdate)
-		tp_assign(range_cyclic, work->range_cyclic)
-		tp_assign(for_background, work->for_background)
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
-		tp_assign(reason, work->reason)
-#endif
 	),
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
-	TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
-		  "kupdate=%d range_cyclic=%d background=%d reason=%s",
-		  __entry->name,
-		  MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
-		  __entry->nr_pages,
-		  __entry->sync_mode,
-		  __entry->for_kupdate,
-		  __entry->range_cyclic,
-		  __entry->for_background,
-		  __print_symbolic(__entry->reason, WB_WORK_REASON)
-	)
-#else
-	TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
-		  "kupdate=%d range_cyclic=%d background=%d",
-		  __entry->name,
-		  MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
-		  __entry->nr_pages,
-		  __entry->sync_mode,
-		  __entry->for_kupdate,
-		  __entry->range_cyclic,
-		  __entry->for_background
+	TP_printk("bdi %s",
+		  __entry->name
 	)
-#endif
 )
-#define DEFINE_WRITEBACK_WORK_EVENT(name) \
-DEFINE_EVENT(writeback_work_class, name, \
+
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)) */
+
+#define LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(name) \
+LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_work_class, name, \
 	TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
 	TP_ARGS(bdi, work))
-DEFINE_WRITEBACK_WORK_EVENT(writeback_nothread)
-DEFINE_WRITEBACK_WORK_EVENT(writeback_queue)
-DEFINE_WRITEBACK_WORK_EVENT(writeback_exec)
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_nothread)
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_queue)
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_exec)
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
-DEFINE_WRITEBACK_WORK_EVENT(writeback_start)
-DEFINE_WRITEBACK_WORK_EVENT(writeback_written)
-DEFINE_WRITEBACK_WORK_EVENT(writeback_wait)
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_start)
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_written)
+LTTNG_TRACEPOINT_EVENT_WRITEBACK_WORK_INSTANCE(writeback_wait)
 #endif
 
-TRACE_EVENT(writeback_pages_written,
+LTTNG_TRACEPOINT_EVENT(writeback_pages_written,
 	TP_PROTO(long pages_written),
 	TP_ARGS(pages_written),
 	TP_STRUCT__entry(
@@ -145,11 +283,11 @@ TRACE_EVENT(writeback_pages_written,
 	TP_printk("%ld", __entry->pages)
 )
 
-DECLARE_EVENT_CLASS(writeback_class,
+LTTNG_TRACEPOINT_EVENT_CLASS(writeback_class,
 	TP_PROTO(struct backing_dev_info *bdi),
 	TP_ARGS(bdi),
 	TP_STRUCT__entry(
-		__array(char, name, 32)
+		__array_text(char, name, 32)
 	),
 	TP_fast_assign(
 		tp_memcpy(name, dev_name(bdi->dev), 32)
@@ -158,8 +296,14 @@ DECLARE_EVENT_CLASS(writeback_class,
 		  __entry->name
 	)
 )
+#undef DEFINE_WRITEBACK_EVENT
 #define DEFINE_WRITEBACK_EVENT(name) \
-DEFINE_EVENT(writeback_class, name, \
+LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_class, name, \
+	TP_PROTO(struct backing_dev_info *bdi), \
+	TP_ARGS(bdi))
+
+#define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
+LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_class, name, map, \
 	TP_PROTO(struct backing_dev_info *bdi), \
 	TP_ARGS(bdi))
 
@@ -174,10 +318,12 @@ DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister)
 DEFINE_WRITEBACK_EVENT(writeback_thread_start)
 DEFINE_WRITEBACK_EVENT(writeback_thread_stop)
 #if (LTTNG_KERNEL_RANGE(3,1,0, 3,2,0))
-DEFINE_WRITEBACK_EVENT(balance_dirty_start)
-DEFINE_WRITEBACK_EVENT(balance_dirty_wait)
+DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_start, writeback_balance_dirty_start)
+DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_wait, writeback_balance_dirty_wait)
+
+LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_written,
 
-TRACE_EVENT(balance_dirty_written,
+	writeback_balance_dirty_written,
 
 	TP_PROTO(struct backing_dev_info *bdi, int written),
 
@@ -200,11 +346,11 @@ TRACE_EVENT(balance_dirty_written,
 )
 #endif
 
-DECLARE_EVENT_CLASS(wbc_class,
+LTTNG_TRACEPOINT_EVENT_CLASS(writeback_wbc_class,
 	TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
 	TP_ARGS(wbc, bdi),
 	TP_STRUCT__entry(
-		__array(char, name, 32)
+		__array_text(char, name, 32)
 		__field(long, nr_to_write)
 		__field(long, pages_skipped)
 		__field(int, sync_mode)
@@ -261,22 +407,23 @@ DECLARE_EVENT_CLASS(wbc_class,
 		__entry->range_end)
 )
 
-#define DEFINE_WBC_EVENT(name) \
-DEFINE_EVENT(wbc_class, name, \
+#undef DEFINE_WBC_EVENT
+#define LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(name, map) \
+LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(writeback_wbc_class, name, map, \
 	TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \
 	TP_ARGS(wbc, bdi))
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
-DEFINE_WBC_EVENT(wbc_writeback_start)
-DEFINE_WBC_EVENT(wbc_writeback_written)
-DEFINE_WBC_EVENT(wbc_writeback_wait)
-DEFINE_WBC_EVENT(wbc_balance_dirty_start)
-DEFINE_WBC_EVENT(wbc_balance_dirty_written)
-DEFINE_WBC_EVENT(wbc_balance_dirty_wait)
+LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_start, writeback_wbc_writeback_start)
+LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_written, writeback_wbc_writeback_written)
+LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writeback_wait, writeback_wbc_writeback_wait)
+LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_start, writeback_wbc_balance_dirty_start)
+LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_written, writeback_wbc_balance_dirty_written)
+LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_wait, writeback_wbc_balance_dirty_wait)
 #endif
-DEFINE_WBC_EVENT(wbc_writepage)
+LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writepage, writeback_wbc_writepage)
 
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
-TRACE_EVENT(writeback_queue_io,
+LTTNG_TRACEPOINT_EVENT(writeback_queue_io,
 	TP_PROTO(struct bdi_writeback *wb,
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
 		 struct wb_writeback_work *work,
@@ -291,37 +438,27 @@ TRACE_EVENT(writeback_queue_io,
 #endif
 	TP_STRUCT__entry(
 		__array(char,		name, 32)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
+#else
 		__field(unsigned long,	older)
 		__field(long,		age)
-		__field(int,		moved)
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
-		__field(int,		reason)
 #endif
+		__field(int,		moved)
 	),
 	TP_fast_assign(
 		tp_memcpy(name, dev_name(wb->bdi->dev), 32)
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
-		tp_assign(older,
-			work->older_than_this ? *(work->older_than_this) : 0)
-		tp_assign(age, work->older_than_this ?
-			(jiffies - *(work->older_than_this)) * 1000 / HZ : -1)
 #else
 		tp_assign(older, older_than_this ?  *older_than_this : 0)
 		tp_assign(age, older_than_this ?
 			(jiffies - *older_than_this) * 1000 / HZ : -1)
 #endif
 		tp_assign(moved, moved)
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
-		tp_assign(reason, work->reason)
-#endif
 	),
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
-	TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s",
+	TP_printk("bdi %s: enqueue=%d",
 		__entry->name,
-		__entry->older,	/* older_than_this in jiffies */
-		__entry->age,	/* older_than_this in relative milliseconds */
 		__entry->moved,
-		__print_symbolic(__entry->reason, WB_WORK_REASON)
 	)
 #else
 	TP_printk("bdi %s: older=%lu age=%ld enqueue=%d",
@@ -333,7 +470,9 @@ TRACE_EVENT(writeback_queue_io,
 #endif
 )
 
-TRACE_EVENT(global_dirty_state,
+LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state,
+
+	writeback_global_dirty_state,
 
 	TP_PROTO(unsigned long background_thresh,
 		 unsigned long dirty_thresh
@@ -384,7 +523,9 @@ TRACE_EVENT(global_dirty_state,
 
 #define KBps(x)			((x) << (PAGE_SHIFT - 10))
 
-TRACE_EVENT(bdi_dirty_ratelimit,
+LTTNG_TRACEPOINT_EVENT_MAP(bdi_dirty_ratelimit,
+
+	writeback_bdi_dirty_ratelimit,
 
 	TP_PROTO(struct backing_dev_info *bdi,
 		 unsigned long dirty_rate,
@@ -427,7 +568,9 @@ TRACE_EVENT(bdi_dirty_ratelimit,
 	)
 )
 
-TRACE_EVENT(balance_dirty_pages,
+LTTNG_TRACEPOINT_EVENT_MAP(balance_dirty_pages,
+
+	writeback_balance_dirty_pages,
 
 	TP_PROTO(struct backing_dev_info *bdi,
 		 unsigned long thresh,
@@ -541,13 +684,13 @@ TRACE_EVENT(balance_dirty_pages,
 #endif
 
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0))
-TRACE_EVENT(writeback_sb_inodes_requeue,
+LTTNG_TRACEPOINT_EVENT(writeback_sb_inodes_requeue,
 
 	TP_PROTO(struct inode *inode),
 	TP_ARGS(inode),
 
 	TP_STRUCT__entry(
-		__array(char, name, 32)
+		__array_text(char, name, 32)
 		__field(unsigned long, ino)
 		__field(unsigned long, state)
 		__field(unsigned long, dirtied_when)
@@ -571,7 +714,7 @@ TRACE_EVENT(writeback_sb_inodes_requeue,
 #endif
 
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
-DECLARE_EVENT_CLASS(writeback_congest_waited_template,
+LTTNG_TRACEPOINT_EVENT_CLASS(writeback_congest_waited_template,
 
 	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 
@@ -592,14 +735,14 @@ DECLARE_EVENT_CLASS(writeback_congest_waited_template,
 			__entry->usec_delayed)
 )
 
-DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
+LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_congestion_wait,
 
 	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 
 	TP_ARGS(usec_timeout, usec_delayed)
 )
 
-DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
+LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_congest_waited_template, writeback_wait_iff_congested,
 
 	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
 
@@ -608,7 +751,7 @@ DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
 #endif
 
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
-DECLARE_EVENT_CLASS(writeback_single_inode_template,
+LTTNG_TRACEPOINT_EVENT_CLASS(writeback_single_inode_template,
 
 	TP_PROTO(struct inode *inode,
 		 struct writeback_control *wbc,
@@ -618,7 +761,7 @@ DECLARE_EVENT_CLASS(writeback_single_inode_template,
 	TP_ARGS(inode, wbc, nr_to_write),
 
 	TP_STRUCT__entry(
-		__array(char, name, 32)
+		__array_text(char, name, 32)
 		__field(unsigned long, ino)
 		__field(unsigned long, state)
 		__field(unsigned long, dirtied_when)
@@ -651,7 +794,7 @@ DECLARE_EVENT_CLASS(writeback_single_inode_template,
 )
 
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0))
-DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_requeue,
+LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode_requeue,
 	TP_PROTO(struct inode *inode,
 		struct writeback_control *wbc,
 		unsigned long nr_to_write),
@@ -659,7 +802,7 @@ DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_requeue,
 )
 #endif
 
-DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
+LTTNG_TRACEPOINT_EVENT_INSTANCE(writeback_single_inode_template, writeback_single_inode,
 	TP_PROTO(struct inode *inode,
 		 struct writeback_control *wbc,
 		 unsigned long nr_to_write),
@@ -667,7 +810,7 @@ DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
 )
 #endif
 
-#endif /* _TRACE_WRITEBACK_H */
+#endif /* LTTNG_TRACE_WRITEBACK_H */
 
 /* This part must be outside protection */
 #include "../../../probes/define_trace.h"