[lttng-modules.git] / instrumentation / events / lttng-module / writeback.h

#undef TRACE_SYSTEM
#define TRACE_SYSTEM writeback

#if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_WRITEBACK_H

#include <linux/backing-dev.h>
#include <linux/writeback.h>
#include <linux/version.h>

#ifndef _TRACE_WRITEBACK_DEF_
#define _TRACE_WRITEBACK_DEF_
static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
{
	struct super_block *sb = inode->i_sb;

	if (strcmp(sb->s_type->name, "bdev") == 0)
		return inode->i_mapping->backing_dev_info;

	return sb->s_bdi;
}
#endif

#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_REFERENCED,		"I_REFERENCED"}		\
	)

#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

DECLARE_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)
	),
	TP_fast_assign(
		tp_memcpy(name, dev_name(bdi->dev ? bdi->dev :
				default_backing_dev_info.dev), 32)
	),
	TP_printk("bdi %s",
		  __entry->name
	)
)
#define DEFINE_WRITEBACK_WORK_EVENT(name) \
DEFINE_EVENT(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)
#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)
#endif

TRACE_EVENT(writeback_pages_written,
	TP_PROTO(long pages_written),
	TP_ARGS(pages_written),
	TP_STRUCT__entry(
		__field(long,		pages)
	),
	TP_fast_assign(
		tp_assign(pages, pages_written)
	),
	TP_printk("%ld", __entry->pages)
)

DECLARE_EVENT_CLASS(writeback_class,
	TP_PROTO(struct backing_dev_info *bdi),
	TP_ARGS(bdi),
	TP_STRUCT__entry(
		__array(char, name, 32)
	),
	TP_fast_assign(
		tp_memcpy(name, dev_name(bdi->dev), 32)
	),
	TP_printk("bdi %s",
		  __entry->name
	)
)
#define DEFINE_WRITEBACK_EVENT(name) \
DEFINE_EVENT(writeback_class, name, \
	TP_PROTO(struct backing_dev_info *bdi), \
	TP_ARGS(bdi))

#define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
DEFINE_EVENT_MAP(writeback_class, name, map, \
	TP_PROTO(struct backing_dev_info *bdi), \
	TP_ARGS(bdi))

DEFINE_WRITEBACK_EVENT(writeback_nowork)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
DEFINE_WRITEBACK_EVENT(writeback_wake_background)
#endif
DEFINE_WRITEBACK_EVENT(writeback_wake_thread)
DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread)
DEFINE_WRITEBACK_EVENT(writeback_bdi_register)
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_MAP(balance_dirty_start, writeback_balance_dirty_start)
DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_wait, writeback_balance_dirty_wait)

TRACE_EVENT_MAP(balance_dirty_written,

	writeback_balance_dirty_written,

	TP_PROTO(struct backing_dev_info *bdi, int written),

	TP_ARGS(bdi, written),

	TP_STRUCT__entry(
		__array(char,	name, 32)
		__field(int,	written)
	),

	TP_fast_assign(
		tp_memcpy(name, dev_name(bdi->dev), 32)
		tp_assign(written, written)
	),

	TP_printk("bdi %s written %d",
		  __entry->name,
		  __entry->written
	)
)
#endif

DECLARE_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)
		__field(long, nr_to_write)
		__field(long, pages_skipped)
		__field(int, sync_mode)
		__field(int, for_kupdate)
		__field(int, for_background)
		__field(int, for_reclaim)
		__field(int, range_cyclic)
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
		__field(int, more_io)
		__field(unsigned long, older_than_this)
#endif
		__field(long, range_start)
		__field(long, range_end)
	),

	TP_fast_assign(
		tp_memcpy(name, dev_name(bdi->dev), 32)
		tp_assign(nr_to_write, wbc->nr_to_write)
		tp_assign(pages_skipped, wbc->pages_skipped)
		tp_assign(sync_mode, wbc->sync_mode)
		tp_assign(for_kupdate, wbc->for_kupdate)
		tp_assign(for_background, wbc->for_background)
		tp_assign(for_reclaim, wbc->for_reclaim)
		tp_assign(range_cyclic, wbc->range_cyclic)
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
		tp_assign(more_io, wbc->more_io)
		tp_assign(older_than_this, wbc->older_than_this ?
						*wbc->older_than_this : 0)
#endif
		tp_assign(range_start, (long)wbc->range_start)
		tp_assign(range_end, (long)wbc->range_end)
	),

	TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
		"bgrd=%d reclm=%d cyclic=%d more=%d older=0x%lx "
#else
		"bgrd=%d reclm=%d cyclic=%d "
#endif
		"start=0x%lx end=0x%lx",
		__entry->name,
		__entry->nr_to_write,
		__entry->pages_skipped,
		__entry->sync_mode,
		__entry->for_kupdate,
		__entry->for_background,
		__entry->for_reclaim,
		__entry->range_cyclic,
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
		__entry->more_io,
		__entry->older_than_this,
#endif
		__entry->range_start,
		__entry->range_end)
)

#undef DEFINE_WBC_EVENT
#define DEFINE_WBC_EVENT(name, map) \
DEFINE_EVENT_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, writeback_wbc_writeback_start)
DEFINE_WBC_EVENT(wbc_writeback_written, writeback_wbc_writeback_written)
DEFINE_WBC_EVENT(wbc_writeback_wait, writeback_wbc_writeback_wait)
DEFINE_WBC_EVENT(wbc_balance_dirty_start, writeback_wbc_balance_dirty_start)
DEFINE_WBC_EVENT(wbc_balance_dirty_written, writeback_wbc_balance_dirty_written)
DEFINE_WBC_EVENT(wbc_balance_dirty_wait, writeback_wbc_balance_dirty_wait)
#endif
DEFINE_WBC_EVENT(wbc_writepage, writeback_wbc_writepage)

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
TRACE_EVENT(writeback_queue_io,
	TP_PROTO(struct bdi_writeback *wb,
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
		 struct wb_writeback_work *work,
#else
		 unsigned long *older_than_this,
#endif
		 int moved),
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
	TP_ARGS(wb, work, moved),
#else
	TP_ARGS(wb, older_than_this, moved),
#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)
#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))
#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_printk("bdi %s: enqueue=%d",
		__entry->name,
		__entry->moved,
	)
#else
	TP_printk("bdi %s: older=%lu age=%ld enqueue=%d",
		__entry->name,
		__entry->older,	/* older_than_this in jiffies */
		__entry->age,	/* older_than_this in relative milliseconds */
		__entry->moved
	)
#endif
)

TRACE_EVENT_MAP(global_dirty_state,

	writeback_global_dirty_state,

	TP_PROTO(unsigned long background_thresh,
		 unsigned long dirty_thresh
	),

	TP_ARGS(background_thresh,
		dirty_thresh
	),

	TP_STRUCT__entry(
		__field(unsigned long,	nr_dirty)
		__field(unsigned long,	nr_writeback)
		__field(unsigned long,	nr_unstable)
		__field(unsigned long,	background_thresh)
		__field(unsigned long,	dirty_thresh)
		__field(unsigned long,	dirty_limit)
		__field(unsigned long,	nr_dirtied)
		__field(unsigned long,	nr_written)
	),

	TP_fast_assign(
		tp_assign(nr_dirty, global_page_state(NR_FILE_DIRTY))
		tp_assign(nr_writeback, global_page_state(NR_WRITEBACK))
		tp_assign(nr_unstable, global_page_state(NR_UNSTABLE_NFS))
		tp_assign(nr_dirtied, global_page_state(NR_DIRTIED))
		tp_assign(nr_written, global_page_state(NR_WRITTEN))
		tp_assign(background_thresh, background_thresh)
		tp_assign(dirty_thresh, dirty_thresh)
		tp_assign(dirty_limit, global_dirty_limit)
	),

	TP_printk("dirty=%lu writeback=%lu unstable=%lu "
		  "bg_thresh=%lu thresh=%lu limit=%lu "
		  "dirtied=%lu written=%lu",
		  __entry->nr_dirty,
		  __entry->nr_writeback,
		  __entry->nr_unstable,
		  __entry->background_thresh,
		  __entry->dirty_thresh,
		  __entry->dirty_limit,
		  __entry->nr_dirtied,
		  __entry->nr_written
	)
)
#endif

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))

#define KBps(x)			((x) << (PAGE_SHIFT - 10))

TRACE_EVENT_MAP(bdi_dirty_ratelimit,

	writeback_bdi_dirty_ratelimit,

	TP_PROTO(struct backing_dev_info *bdi,
		 unsigned long dirty_rate,
		 unsigned long task_ratelimit),

	TP_ARGS(bdi, dirty_rate, task_ratelimit),

	TP_STRUCT__entry(
		__array(char,		bdi, 32)
		__field(unsigned long,	write_bw)
		__field(unsigned long,	avg_write_bw)
		__field(unsigned long,	dirty_rate)
		__field(unsigned long,	dirty_ratelimit)
		__field(unsigned long,	task_ratelimit)
		__field(unsigned long,	balanced_dirty_ratelimit)
	),

	TP_fast_assign(
		tp_memcpy(bdi, dev_name(bdi->dev), 32)
		tp_assign(write_bw, KBps(bdi->write_bandwidth))
		tp_assign(avg_write_bw, KBps(bdi->avg_write_bandwidth))
		tp_assign(dirty_rate, KBps(dirty_rate))
		tp_assign(dirty_ratelimit, KBps(bdi->dirty_ratelimit))
		tp_assign(task_ratelimit, KBps(task_ratelimit))
		tp_assign(balanced_dirty_ratelimit,
					KBps(bdi->balanced_dirty_ratelimit))
	),

	TP_printk("bdi %s: "
		  "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
		  "dirty_ratelimit=%lu task_ratelimit=%lu "
		  "balanced_dirty_ratelimit=%lu",
		  __entry->bdi,
		  __entry->write_bw,		/* write bandwidth */
		  __entry->avg_write_bw,	/* avg write bandwidth */
		  __entry->dirty_rate,		/* bdi dirty rate */
		  __entry->dirty_ratelimit,	/* base ratelimit */
		  __entry->task_ratelimit, /* ratelimit with position control */
		  __entry->balanced_dirty_ratelimit /* the balanced ratelimit */
	)
)

TRACE_EVENT_MAP(balance_dirty_pages,

	writeback_balance_dirty_pages,

	TP_PROTO(struct backing_dev_info *bdi,
		 unsigned long thresh,
		 unsigned long bg_thresh,
		 unsigned long dirty,
		 unsigned long bdi_thresh,
		 unsigned long bdi_dirty,
		 unsigned long dirty_ratelimit,
		 unsigned long task_ratelimit,
		 unsigned long dirtied,
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
		 unsigned long period,
#endif
		 long pause,
		 unsigned long start_time),

	TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
		dirty_ratelimit, task_ratelimit,
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
		dirtied, period, pause, start_time),
#else
		dirtied, pause, start_time),
#endif
	TP_STRUCT__entry(
		__array(	 char,	bdi, 32)
		__field(unsigned long,	limit)
		__field(unsigned long,	setpoint)
		__field(unsigned long,	dirty)
		__field(unsigned long,	bdi_setpoint)
		__field(unsigned long,	bdi_dirty)
		__field(unsigned long,	dirty_ratelimit)
		__field(unsigned long,	task_ratelimit)
		__field(unsigned int,	dirtied)
		__field(unsigned int,	dirtied_pause)
		__field(unsigned long,	paused)
		__field(	 long,	pause)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
		__field(unsigned long,	period)
		__field(	 long,	think)
#endif
	),

	TP_fast_assign(
		tp_memcpy(bdi, dev_name(bdi->dev), 32)
		tp_assign(limit, global_dirty_limit)
		tp_assign(setpoint,
			(global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
		tp_assign(dirty, dirty)
		tp_assign(bdi_setpoint,
			((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
			bdi_thresh / (thresh + 1))
		tp_assign(bdi_dirty, bdi_dirty)
		tp_assign(dirty_ratelimit, KBps(dirty_ratelimit))
		tp_assign(task_ratelimit, KBps(task_ratelimit))
		tp_assign(dirtied, dirtied)
		tp_assign(dirtied_pause, current->nr_dirtied_pause)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
		tp_assign(think, current->dirty_paused_when == 0 ? 0 :
			(long)(jiffies - current->dirty_paused_when) * 1000/HZ)
		tp_assign(period, period * 1000 / HZ)
#endif
		tp_assign(pause, pause * 1000 / HZ)
		tp_assign(paused, (jiffies - start_time) * 1000 / HZ)
	),


#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
	TP_printk("bdi %s: "
		  "limit=%lu setpoint=%lu dirty=%lu "
		  "bdi_setpoint=%lu bdi_dirty=%lu "
		  "dirty_ratelimit=%lu task_ratelimit=%lu "
		  "dirtied=%u dirtied_pause=%u "
		  "paused=%lu pause=%ld period=%lu think=%ld",
		  __entry->bdi,
		  __entry->limit,
		  __entry->setpoint,
		  __entry->dirty,
		  __entry->bdi_setpoint,
		  __entry->bdi_dirty,
		  __entry->dirty_ratelimit,
		  __entry->task_ratelimit,
		  __entry->dirtied,
		  __entry->dirtied_pause,
		  __entry->paused,	/* ms */
		  __entry->pause,	/* ms */
		  __entry->period,	/* ms */
		  __entry->think	/* ms */
	  )
#else
	TP_printk("bdi %s: "
		  "limit=%lu setpoint=%lu dirty=%lu "
		  "bdi_setpoint=%lu bdi_dirty=%lu "
		  "dirty_ratelimit=%lu task_ratelimit=%lu "
		  "dirtied=%u dirtied_pause=%u "
		  "paused=%lu pause=%ld",
		  __entry->bdi,
		  __entry->limit,
		  __entry->setpoint,
		  __entry->dirty,
		  __entry->bdi_setpoint,
		  __entry->bdi_dirty,
		  __entry->dirty_ratelimit,
		  __entry->task_ratelimit,
		  __entry->dirtied,
		  __entry->dirtied_pause,
		  __entry->paused,	/* ms */
		  __entry->pause	/* ms */
	  )
#endif
)
#endif

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0))
TRACE_EVENT(writeback_sb_inodes_requeue,

	TP_PROTO(struct inode *inode),
	TP_ARGS(inode),

	TP_STRUCT__entry(
		__array(char, name, 32)
		__field(unsigned long, ino)
		__field(unsigned long, state)
		__field(unsigned long, dirtied_when)
	),

	TP_fast_assign(
		tp_memcpy(name, dev_name(inode_to_bdi(inode)->dev), 32)
		tp_assign(ino, inode->i_ino)
		tp_assign(state, inode->i_state)
		tp_assign(dirtied_when, inode->dirtied_when)
	),

	TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu",
		  __entry->name,
		  __entry->ino,
		  show_inode_state(__entry->state),
		  __entry->dirtied_when,
		  (jiffies - __entry->dirtied_when) / HZ
	)
)
#endif

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
DECLARE_EVENT_CLASS(writeback_congest_waited_template,

	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),

	TP_ARGS(usec_timeout, usec_delayed),

	TP_STRUCT__entry(
		__field(	unsigned int,	usec_timeout	)
		__field(	unsigned int,	usec_delayed	)
	),

	TP_fast_assign(
		tp_assign(usec_timeout, usec_timeout)
		tp_assign(usec_delayed, usec_delayed)
	),

	TP_printk("usec_timeout=%u usec_delayed=%u",
			__entry->usec_timeout,
			__entry->usec_delayed)
)

DEFINE_EVENT(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,

	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),

	TP_ARGS(usec_timeout, usec_delayed)
)
#endif

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
DECLARE_EVENT_CLASS(writeback_single_inode_template,

	TP_PROTO(struct inode *inode,
		 struct writeback_control *wbc,
		 unsigned long nr_to_write
	),

	TP_ARGS(inode, wbc, nr_to_write),

	TP_STRUCT__entry(
		__array(char, name, 32)
		__field(unsigned long, ino)
		__field(unsigned long, state)
		__field(unsigned long, dirtied_when)
		__field(unsigned long, writeback_index)
		__field(long, nr_to_write)
		__field(unsigned long, wrote)
	),

	TP_fast_assign(
		tp_memcpy(name, dev_name(inode_to_bdi(inode)->dev), 32)
		tp_assign(ino, inode->i_ino)
		tp_assign(state, inode->i_state)
		tp_assign(dirtied_when, inode->dirtied_when)
		tp_assign(writeback_index, inode->i_mapping->writeback_index)
		tp_assign(nr_to_write, nr_to_write)
		tp_assign(wrote, nr_to_write - wbc->nr_to_write)
	),

	TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
		  "index=%lu to_write=%ld wrote=%lu",
		  __entry->name,
		  __entry->ino,
		  show_inode_state(__entry->state),
		  __entry->dirtied_when,
		  (jiffies - __entry->dirtied_when) / HZ,
		  __entry->writeback_index,
		  __entry->nr_to_write,
		  __entry->wrote
	)
)

#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0))
DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_requeue,
	TP_PROTO(struct inode *inode,
		struct writeback_control *wbc,
		unsigned long nr_to_write),
	TP_ARGS(inode, wbc, nr_to_write)
)
#endif

DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
	TP_PROTO(struct inode *inode,
		 struct writeback_control *wbc,
		 unsigned long nr_to_write),
	TP_ARGS(inode, wbc, nr_to_write)
)
#endif

#endif /* _TRACE_WRITEBACK_H */

/* This part must be outside protection */
#include "../../../probes/define_trace.h"
Commit	Line	Data
b87700e3 AG	1	#undef TRACE_SYSTEM
	2	#define TRACE_SYSTEM writeback
	3
	4	#if !defined(_TRACE_WRITEBACK_H) \|\| defined(TRACE_HEADER_MULTI_READ)
	5	#define _TRACE_WRITEBACK_H
	6
	7	#include <linux/backing-dev.h>
	8	#include <linux/writeback.h>
	9	#include <linux/version.h>
	10
	11	#ifndef _TRACE_WRITEBACK_DEF_
	12	#define _TRACE_WRITEBACK_DEF_
b87700e3 AG	13	static inline struct backing_dev_info inode_to_bdi(struct inode inode)
	14	{
	15	struct super_block *sb = inode->i_sb;
	16
	17	if (strcmp(sb->s_type->name, "bdev") == 0)
	18	return inode->i_mapping->backing_dev_info;
	19
	20	return sb->s_bdi;
	21	}
	22	#endif
	23
	24	#define show_inode_state(state) \
	25	__print_flags(state, "\|", \
	26	{I_DIRTY_SYNC, "I_DIRTY_SYNC"}, \
	27	{I_DIRTY_DATASYNC, "I_DIRTY_DATASYNC"}, \
	28	{I_DIRTY_PAGES, "I_DIRTY_PAGES"}, \
	29	{I_NEW, "I_NEW"}, \
	30	{I_WILL_FREE, "I_WILL_FREE"}, \
	31	{I_FREEING, "I_FREEING"}, \
	32	{I_CLEAR, "I_CLEAR"}, \
	33	{I_SYNC, "I_SYNC"}, \
	34	{I_REFERENCED, "I_REFERENCED"} \
	35	)
	36
	37	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
	38	#define WB_WORK_REASON \
	39	{WB_REASON_BACKGROUND, "background"}, \
	40	{WB_REASON_TRY_TO_FREE_PAGES, "try_to_free_pages"}, \
	41	{WB_REASON_SYNC, "sync"}, \
	42	{WB_REASON_PERIODIC, "periodic"}, \
	43	{WB_REASON_LAPTOP_TIMER, "laptop_timer"}, \
	44	{WB_REASON_FREE_MORE_MEM, "free_more_memory"}, \
	45	{WB_REASON_FS_FREE_SPACE, "fs_free_space"}, \
	46	{WB_REASON_FORKER_THREAD, "forker_thread"}
	47	#endif
	48
	49	DECLARE_EVENT_CLASS(writeback_work_class,
	50	TP_PROTO(struct backing_dev_info bdi, struct wb_writeback_work work),
	51	TP_ARGS(bdi, work),
	52	TP_STRUCT__entry(
	53	__array(char, name, 32)
b87700e3 AG	54	),
	55	TP_fast_assign(
	56	tp_memcpy(name, dev_name(bdi->dev ? bdi->dev :
	57	default_backing_dev_info.dev), 32)
b87700e3	58	),
88dc2c97 MD	59	TP_printk("bdi %s",
88dc2c97 MD	60	__entry->name
b87700e3	61	)
b87700e3 AG	62	)
	63	#define DEFINE_WRITEBACK_WORK_EVENT(name) \
	64	DEFINE_EVENT(writeback_work_class, name, \
	65	TP_PROTO(struct backing_dev_info bdi, struct wb_writeback_work work), \
	66	TP_ARGS(bdi, work))
	67	DEFINE_WRITEBACK_WORK_EVENT(writeback_nothread)
	68	DEFINE_WRITEBACK_WORK_EVENT(writeback_queue)
	69	DEFINE_WRITEBACK_WORK_EVENT(writeback_exec)
	70	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
	71	DEFINE_WRITEBACK_WORK_EVENT(writeback_start)
	72	DEFINE_WRITEBACK_WORK_EVENT(writeback_written)
	73	DEFINE_WRITEBACK_WORK_EVENT(writeback_wait)
	74	#endif
	75
	76	TRACE_EVENT(writeback_pages_written,
	77	TP_PROTO(long pages_written),
	78	TP_ARGS(pages_written),
	79	TP_STRUCT__entry(
	80	__field(long, pages)
	81	),
	82	TP_fast_assign(
	83	tp_assign(pages, pages_written)
	84	),
	85	TP_printk("%ld", __entry->pages)
	86	)
	87
	88	DECLARE_EVENT_CLASS(writeback_class,
	89	TP_PROTO(struct backing_dev_info *bdi),
	90	TP_ARGS(bdi),
	91	TP_STRUCT__entry(
	92	__array(char, name, 32)
	93	),
	94	TP_fast_assign(
	95	tp_memcpy(name, dev_name(bdi->dev), 32)
	96	),
	97	TP_printk("bdi %s",
	98	__entry->name
	99	)
	100	)
	101	#define DEFINE_WRITEBACK_EVENT(name) \
	102	DEFINE_EVENT(writeback_class, name, \
	103	TP_PROTO(struct backing_dev_info *bdi), \
	104	TP_ARGS(bdi))
	105
9cf29d3e MD	106	#define DEFINE_WRITEBACK_EVENT_MAP(name, map) \
	107	DEFINE_EVENT_MAP(writeback_class, name, map, \
	108	TP_PROTO(struct backing_dev_info *bdi), \
	109	TP_ARGS(bdi))
	110
b87700e3 AG	111	DEFINE_WRITEBACK_EVENT(writeback_nowork)
	112	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
	113	DEFINE_WRITEBACK_EVENT(writeback_wake_background)
	114	#endif
	115	DEFINE_WRITEBACK_EVENT(writeback_wake_thread)
	116	DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread)
	117	DEFINE_WRITEBACK_EVENT(writeback_bdi_register)
	118	DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister)
	119	DEFINE_WRITEBACK_EVENT(writeback_thread_start)
	120	DEFINE_WRITEBACK_EVENT(writeback_thread_stop)
	121	#if (LTTNG_KERNEL_RANGE(3,1,0, 3,2,0))
9cf29d3e MD	122	DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_start, writeback_balance_dirty_start)
	123	DEFINE_WRITEBACK_EVENT_MAP(balance_dirty_wait, writeback_balance_dirty_wait)
	124
	125	TRACE_EVENT_MAP(balance_dirty_written,
b87700e3	126
9cf29d3e	127	writeback_balance_dirty_written,
b87700e3 AG	128
	129	TP_PROTO(struct backing_dev_info *bdi, int written),
	130
	131	TP_ARGS(bdi, written),
	132
	133	TP_STRUCT__entry(
	134	__array(char, name, 32)
	135	__field(int, written)
	136	),
	137
	138	TP_fast_assign(
	139	tp_memcpy(name, dev_name(bdi->dev), 32)
	140	tp_assign(written, written)
	141	),
	142
	143	TP_printk("bdi %s written %d",
	144	__entry->name,
	145	__entry->written
	146	)
	147	)
	148	#endif
	149
9cf29d3e	150	DECLARE_EVENT_CLASS(writeback_wbc_class,
b87700e3 AG	151	TP_PROTO(struct writeback_control wbc, struct backing_dev_info bdi),
	152	TP_ARGS(wbc, bdi),
	153	TP_STRUCT__entry(
	154	__array(char, name, 32)
	155	__field(long, nr_to_write)
	156	__field(long, pages_skipped)
	157	__field(int, sync_mode)
	158	__field(int, for_kupdate)
	159	__field(int, for_background)
	160	__field(int, for_reclaim)
	161	__field(int, range_cyclic)
	162	#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
	163	__field(int, more_io)
	164	__field(unsigned long, older_than_this)
	165	#endif
	166	__field(long, range_start)
	167	__field(long, range_end)
	168	),
	169
	170	TP_fast_assign(
	171	tp_memcpy(name, dev_name(bdi->dev), 32)
	172	tp_assign(nr_to_write, wbc->nr_to_write)
	173	tp_assign(pages_skipped, wbc->pages_skipped)
	174	tp_assign(sync_mode, wbc->sync_mode)
	175	tp_assign(for_kupdate, wbc->for_kupdate)
	176	tp_assign(for_background, wbc->for_background)
	177	tp_assign(for_reclaim, wbc->for_reclaim)
	178	tp_assign(range_cyclic, wbc->range_cyclic)
	179	#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
	180	tp_assign(more_io, wbc->more_io)
	181	tp_assign(older_than_this, wbc->older_than_this ?
	182	*wbc->older_than_this : 0)
	183	#endif
	184	tp_assign(range_start, (long)wbc->range_start)
	185	tp_assign(range_end, (long)wbc->range_end)
	186	),
	187
	188	TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
	189	#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
	190	"bgrd=%d reclm=%d cyclic=%d more=%d older=0x%lx "
	191	#else
	192	"bgrd=%d reclm=%d cyclic=%d "
	193	#endif
	194	"start=0x%lx end=0x%lx",
	195	__entry->name,
	196	__entry->nr_to_write,
	197	__entry->pages_skipped,
	198	__entry->sync_mode,
	199	__entry->for_kupdate,
	200	__entry->for_background,
	201	__entry->for_reclaim,
	202	__entry->range_cyclic,
	203	#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
	204	__entry->more_io,
	205	__entry->older_than_this,
	206	#endif
	207	__entry->range_start,
	208	__entry->range_end)
	209	)
	210
9cf29d3e MD	211	#undef DEFINE_WBC_EVENT
	212	#define DEFINE_WBC_EVENT(name, map) \
	213	DEFINE_EVENT_MAP(writeback_wbc_class, name, map, \
b87700e3 AG	214	TP_PROTO(struct writeback_control wbc, struct backing_dev_info bdi), \
	215	TP_ARGS(wbc, bdi))
	216	#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
9cf29d3e MD	217	DEFINE_WBC_EVENT(wbc_writeback_start, writeback_wbc_writeback_start)
	218	DEFINE_WBC_EVENT(wbc_writeback_written, writeback_wbc_writeback_written)
	219	DEFINE_WBC_EVENT(wbc_writeback_wait, writeback_wbc_writeback_wait)
	220	DEFINE_WBC_EVENT(wbc_balance_dirty_start, writeback_wbc_balance_dirty_start)
	221	DEFINE_WBC_EVENT(wbc_balance_dirty_written, writeback_wbc_balance_dirty_written)
	222	DEFINE_WBC_EVENT(wbc_balance_dirty_wait, writeback_wbc_balance_dirty_wait)
b87700e3	223	#endif
9cf29d3e	224	DEFINE_WBC_EVENT(wbc_writepage, writeback_wbc_writepage)
b87700e3 AG	225
	226	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
	227	TRACE_EVENT(writeback_queue_io,
	228	TP_PROTO(struct bdi_writeback *wb,
	229	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
	230	struct wb_writeback_work *work,
	231	#else
	232	unsigned long *older_than_this,
	233	#endif
	234	int moved),
	235	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
	236	TP_ARGS(wb, work, moved),
	237	#else
	238	TP_ARGS(wb, older_than_this, moved),
	239	#endif
	240	TP_STRUCT__entry(
	241	__array(char, name, 32)
88dc2c97 MD	242	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
88dc2c97 MD	243	#else
b87700e3 AG	244	__field(unsigned long, older)
b87700e3 AG	245	__field(long, age)
b87700e3	246	#endif
88dc2c97	247	__field(int, moved)
b87700e3 AG	248	),
	249	TP_fast_assign(
	250	tp_memcpy(name, dev_name(wb->bdi->dev), 32)
	251	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
b87700e3 AG	252	#else
	253	tp_assign(older, older_than_this ? *older_than_this : 0)
	254	tp_assign(age, older_than_this ?
	255	(jiffies - older_than_this) 1000 / HZ : -1)
	256	#endif
	257	tp_assign(moved, moved)
b87700e3 AG	258	),
b87700e3 AG	259	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
88dc2c97	260	TP_printk("bdi %s: enqueue=%d",
b87700e3	261	__entry->name,
b87700e3	262	__entry->moved,
b87700e3 AG	263	)
	264	#else
	265	TP_printk("bdi %s: older=%lu age=%ld enqueue=%d",
	266	__entry->name,
	267	__entry->older, /* older_than_this in jiffies */
	268	__entry->age, /* older_than_this in relative milliseconds */
	269	__entry->moved
	270	)
	271	#endif
	272	)
	273
9cf29d3e MD	274	TRACE_EVENT_MAP(global_dirty_state,
	275
	276	writeback_global_dirty_state,
b87700e3 AG	277
	278	TP_PROTO(unsigned long background_thresh,
	279	unsigned long dirty_thresh
	280	),
	281
	282	TP_ARGS(background_thresh,
	283	dirty_thresh
	284	),
	285
	286	TP_STRUCT__entry(
	287	__field(unsigned long, nr_dirty)
	288	__field(unsigned long, nr_writeback)
	289	__field(unsigned long, nr_unstable)
	290	__field(unsigned long, background_thresh)
	291	__field(unsigned long, dirty_thresh)
	292	__field(unsigned long, dirty_limit)
	293	__field(unsigned long, nr_dirtied)
	294	__field(unsigned long, nr_written)
	295	),
	296
	297	TP_fast_assign(
	298	tp_assign(nr_dirty, global_page_state(NR_FILE_DIRTY))
	299	tp_assign(nr_writeback, global_page_state(NR_WRITEBACK))
	300	tp_assign(nr_unstable, global_page_state(NR_UNSTABLE_NFS))
	301	tp_assign(nr_dirtied, global_page_state(NR_DIRTIED))
	302	tp_assign(nr_written, global_page_state(NR_WRITTEN))
	303	tp_assign(background_thresh, background_thresh)
	304	tp_assign(dirty_thresh, dirty_thresh)
	305	tp_assign(dirty_limit, global_dirty_limit)
	306	),
	307
	308	TP_printk("dirty=%lu writeback=%lu unstable=%lu "
	309	"bg_thresh=%lu thresh=%lu limit=%lu "
	310	"dirtied=%lu written=%lu",
	311	__entry->nr_dirty,
	312	__entry->nr_writeback,
	313	__entry->nr_unstable,
	314	__entry->background_thresh,
	315	__entry->dirty_thresh,
	316	__entry->dirty_limit,
	317	__entry->nr_dirtied,
	318	__entry->nr_written
	319	)
	320	)
	321	#endif
	322
	323	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
	324
	325	#define KBps(x) ((x) << (PAGE_SHIFT - 10))
	326
9cf29d3e MD	327	TRACE_EVENT_MAP(bdi_dirty_ratelimit,
	328
	329	writeback_bdi_dirty_ratelimit,
b87700e3 AG	330
	331	TP_PROTO(struct backing_dev_info *bdi,
	332	unsigned long dirty_rate,
	333	unsigned long task_ratelimit),
	334
	335	TP_ARGS(bdi, dirty_rate, task_ratelimit),
	336
	337	TP_STRUCT__entry(
	338	__array(char, bdi, 32)
	339	__field(unsigned long, write_bw)
	340	__field(unsigned long, avg_write_bw)
	341	__field(unsigned long, dirty_rate)
	342	__field(unsigned long, dirty_ratelimit)
	343	__field(unsigned long, task_ratelimit)
	344	__field(unsigned long, balanced_dirty_ratelimit)
	345	),
	346
	347	TP_fast_assign(
	348	tp_memcpy(bdi, dev_name(bdi->dev), 32)
	349	tp_assign(write_bw, KBps(bdi->write_bandwidth))
	350	tp_assign(avg_write_bw, KBps(bdi->avg_write_bandwidth))
	351	tp_assign(dirty_rate, KBps(dirty_rate))
	352	tp_assign(dirty_ratelimit, KBps(bdi->dirty_ratelimit))
	353	tp_assign(task_ratelimit, KBps(task_ratelimit))
	354	tp_assign(balanced_dirty_ratelimit,
	355	KBps(bdi->balanced_dirty_ratelimit))
	356	),
	357
	358	TP_printk("bdi %s: "
	359	"write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
	360	"dirty_ratelimit=%lu task_ratelimit=%lu "
	361	"balanced_dirty_ratelimit=%lu",
	362	__entry->bdi,
	363	__entry->write_bw, /* write bandwidth */
	364	__entry->avg_write_bw, /* avg write bandwidth */
	365	__entry->dirty_rate, /* bdi dirty rate */
	366	__entry->dirty_ratelimit, /* base ratelimit */
	367	__entry->task_ratelimit, /* ratelimit with position control */
	368	__entry->balanced_dirty_ratelimit /* the balanced ratelimit */
	369	)
	370	)
	371
9cf29d3e MD	372	TRACE_EVENT_MAP(balance_dirty_pages,
	373
	374	writeback_balance_dirty_pages,
b87700e3 AG	375
	376	TP_PROTO(struct backing_dev_info *bdi,
	377	unsigned long thresh,
	378	unsigned long bg_thresh,
	379	unsigned long dirty,
	380	unsigned long bdi_thresh,
	381	unsigned long bdi_dirty,
	382	unsigned long dirty_ratelimit,
	383	unsigned long task_ratelimit,
	384	unsigned long dirtied,
	385	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
	386	unsigned long period,
	387	#endif
	388	long pause,
	389	unsigned long start_time),
	390
	391	TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
	392	dirty_ratelimit, task_ratelimit,
	393	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
	394	dirtied, period, pause, start_time),
	395	#else
	396	dirtied, pause, start_time),
	397	#endif
	398	TP_STRUCT__entry(
	399	__array( char, bdi, 32)
	400	__field(unsigned long, limit)
	401	__field(unsigned long, setpoint)
	402	__field(unsigned long, dirty)
	403	__field(unsigned long, bdi_setpoint)
	404	__field(unsigned long, bdi_dirty)
	405	__field(unsigned long, dirty_ratelimit)
	406	__field(unsigned long, task_ratelimit)
	407	__field(unsigned int, dirtied)
	408	__field(unsigned int, dirtied_pause)
	409	__field(unsigned long, paused)
	410	__field( long, pause)
	411	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
	412	__field(unsigned long, period)
	413	__field( long, think)
	414	#endif
	415	),
	416
	417	TP_fast_assign(
	418	tp_memcpy(bdi, dev_name(bdi->dev), 32)
	419	tp_assign(limit, global_dirty_limit)
	420	tp_assign(setpoint,
	421	(global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
	422	tp_assign(dirty, dirty)
	423	tp_assign(bdi_setpoint,
	424	((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
	425	bdi_thresh / (thresh + 1))
	426	tp_assign(bdi_dirty, bdi_dirty)
	427	tp_assign(dirty_ratelimit, KBps(dirty_ratelimit))
	428	tp_assign(task_ratelimit, KBps(task_ratelimit))
	429	tp_assign(dirtied, dirtied)
	430	tp_assign(dirtied_pause, current->nr_dirtied_pause)
	431	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
	432	tp_assign(think, current->dirty_paused_when == 0 ? 0 :
	433	(long)(jiffies - current->dirty_paused_when) * 1000/HZ)
	434	tp_assign(period, period * 1000 / HZ)
	435	#endif
	436	tp_assign(pause, pause * 1000 / HZ)
	437	tp_assign(paused, (jiffies - start_time) * 1000 / HZ)
	438	),
439
440
441	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
442	TP_printk("bdi %s: "
443	"limit=%lu setpoint=%lu dirty=%lu "
444	"bdi_setpoint=%lu bdi_dirty=%lu "
445	"dirty_ratelimit=%lu task_ratelimit=%lu "
446	"dirtied=%u dirtied_pause=%u "
447	"paused=%lu pause=%ld period=%lu think=%ld",
448	__entry->bdi,
449	__entry->limit,
450	__entry->setpoint,
451	__entry->dirty,
452	__entry->bdi_setpoint,
453	__entry->bdi_dirty,
454	__entry->dirty_ratelimit,
455	__entry->task_ratelimit,
456	__entry->dirtied,
457	__entry->dirtied_pause,
458	__entry->paused, /* ms */
459	__entry->pause, /* ms */
460	__entry->period, /* ms */
461	__entry->think /* ms */
462	)
463	#else
464	TP_printk("bdi %s: "
465	"limit=%lu setpoint=%lu dirty=%lu "
466	"bdi_setpoint=%lu bdi_dirty=%lu "
467	"dirty_ratelimit=%lu task_ratelimit=%lu "
468	"dirtied=%u dirtied_pause=%u "
469	"paused=%lu pause=%ld",
470	__entry->bdi,
471	__entry->limit,
472	__entry->setpoint,
473	__entry->dirty,
474	__entry->bdi_setpoint,
475	__entry->bdi_dirty,
476	__entry->dirty_ratelimit,
477	__entry->task_ratelimit,
478	__entry->dirtied,
479	__entry->dirtied_pause,
480	__entry->paused, /* ms */
481	__entry->pause /* ms */
482	)
483	#endif
484	)
485	#endif
486
487	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0))
488	TRACE_EVENT(writeback_sb_inodes_requeue,
489
490	TP_PROTO(struct inode *inode),
491	TP_ARGS(inode),
492
493	TP_STRUCT__entry(
494	__array(char, name, 32)
495	__field(unsigned long, ino)
496	__field(unsigned long, state)
497	__field(unsigned long, dirtied_when)
498	),
499
500	TP_fast_assign(
501	tp_memcpy(name, dev_name(inode_to_bdi(inode)->dev), 32)
502	tp_assign(ino, inode->i_ino)
503	tp_assign(state, inode->i_state)
504	tp_assign(dirtied_when, inode->dirtied_when)
505	),
506
507	TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu",
508	__entry->name,
509	__entry->ino,
510	show_inode_state(__entry->state),
511	__entry->dirtied_when,
512	(jiffies - __entry->dirtied_when) / HZ
513	)
514	)
515	#endif
516
517	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
518	DECLARE_EVENT_CLASS(writeback_congest_waited_template,
519
520	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
521
522	TP_ARGS(usec_timeout, usec_delayed),
523
524	TP_STRUCT__entry(
525	__field( unsigned int, usec_timeout )
526	__field( unsigned int, usec_delayed )
527	),
528
529	TP_fast_assign(
530	tp_assign(usec_timeout, usec_timeout)
531	tp_assign(usec_delayed, usec_delayed)
532	),
533
534	TP_printk("usec_timeout=%u usec_delayed=%u",
535	__entry->usec_timeout,
536	__entry->usec_delayed)
537	)
538
539	DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
540
541	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
542
543	TP_ARGS(usec_timeout, usec_delayed)
544	)
545
546	DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
547
548	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
549
550	TP_ARGS(usec_timeout, usec_delayed)
551	)
552	#endif
553
554	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
555	DECLARE_EVENT_CLASS(writeback_single_inode_template,
556
557	TP_PROTO(struct inode *inode,
558	struct writeback_control *wbc,
559	unsigned long nr_to_write
560	),
561
562	TP_ARGS(inode, wbc, nr_to_write),
563
564	TP_STRUCT__entry(
565	__array(char, name, 32)
566	__field(unsigned long, ino)
567	__field(unsigned long, state)
568	__field(unsigned long, dirtied_when)
569	__field(unsigned long, writeback_index)
570	__field(long, nr_to_write)
571	__field(unsigned long, wrote)
572	),
573
574	TP_fast_assign(
575	tp_memcpy(name, dev_name(inode_to_bdi(inode)->dev), 32)
576	tp_assign(ino, inode->i_ino)
577	tp_assign(state, inode->i_state)
578	tp_assign(dirtied_when, inode->dirtied_when)
579	tp_assign(writeback_index, inode->i_mapping->writeback_index)
580	tp_assign(nr_to_write, nr_to_write)
581	tp_assign(wrote, nr_to_write - wbc->nr_to_write)
582	),
583
584	TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
585	"index=%lu to_write=%ld wrote=%lu",
586	__entry->name,
587	__entry->ino,
588	show_inode_state(__entry->state),
589	__entry->dirtied_when,
590	(jiffies - __entry->dirtied_when) / HZ,
591	__entry->writeback_index,
592	__entry->nr_to_write,
593	__entry->wrote
594	)
595	)
596
597	#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0))
598	DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_requeue,
599	TP_PROTO(struct inode *inode,
600	struct writeback_control *wbc,
601	unsigned long nr_to_write),
602	TP_ARGS(inode, wbc, nr_to_write)
603	)
604	#endif
605
606	DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
607	TP_PROTO(struct inode *inode,
608	struct writeback_control *wbc,
609	unsigned long nr_to_write),
610	TP_ARGS(inode, wbc, nr_to_write)
611	)
612	#endif
613
614	#endif /* _TRACE_WRITEBACK_H */
615
616	/* This part must be outside protection */
617	#include "../../../probes/define_trace.h"