[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_
/* 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 */
};
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)
		__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
	),
	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
	)
#endif
)
#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_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(balance_dirty_start)
DEFINE_WRITEBACK_EVENT(balance_dirty_wait)

TRACE_EVENT(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(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)
)

#define DEFINE_WBC_EVENT(name) \
DEFINE_EVENT(wbc_class, name, \
	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)
#endif
DEFINE_WBC_EVENT(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)
		__field(unsigned long,	older)
		__field(long,		age)
		__field(int,		moved)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
		__field(int,		reason)
#endif
	),
	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",
		__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",
		__entry->name,
		__entry->older,	/* older_than_this in jiffies */
		__entry->age,	/* older_than_this in relative milliseconds */
		__entry->moved
	)
#endif
)

TRACE_EVENT(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(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(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_
	13	/* Have to duplicate it here from fs/fs-writeback.c */
	14	struct wb_writeback_work {
	15	long nr_pages;
	16	struct super_block *sb;
	17	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
	18	unsigned long *older_than_this;
	19	#endif
	20	enum writeback_sync_modes sync_mode;
	21	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
	22	unsigned int tagged_writepages:1;
	23	#endif
	24	unsigned int for_kupdate:1;
	25	unsigned int range_cyclic:1;
	26	unsigned int for_background:1;
	27	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
	28	enum wb_reason reason; /* why was writeback initiated? */
	29	#endif
	30
	31	struct list_head list; /* pending work list */
	32	struct completion done; / set if the caller waits */
	33	};
	34	static inline struct backing_dev_info inode_to_bdi(struct inode inode)
	35	{
	36	struct super_block *sb = inode->i_sb;
	37
	38	if (strcmp(sb->s_type->name, "bdev") == 0)
	39	return inode->i_mapping->backing_dev_info;
	40
	41	return sb->s_bdi;
	42	}
	43	#endif
	44
	45	#define show_inode_state(state) \
	46	__print_flags(state, "\|", \
	47	{I_DIRTY_SYNC, "I_DIRTY_SYNC"}, \
	48	{I_DIRTY_DATASYNC, "I_DIRTY_DATASYNC"}, \
	49	{I_DIRTY_PAGES, "I_DIRTY_PAGES"}, \
	50	{I_NEW, "I_NEW"}, \
	51	{I_WILL_FREE, "I_WILL_FREE"}, \
	52	{I_FREEING, "I_FREEING"}, \
	53	{I_CLEAR, "I_CLEAR"}, \
	54	{I_SYNC, "I_SYNC"}, \
	55	{I_REFERENCED, "I_REFERENCED"} \
	56	)
	57
	58	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
	59	#define WB_WORK_REASON \
	60	{WB_REASON_BACKGROUND, "background"}, \
	61	{WB_REASON_TRY_TO_FREE_PAGES, "try_to_free_pages"}, \
	62	{WB_REASON_SYNC, "sync"}, \
	63	{WB_REASON_PERIODIC, "periodic"}, \
	64	{WB_REASON_LAPTOP_TIMER, "laptop_timer"}, \
65	{WB_REASON_FREE_MORE_MEM, "free_more_memory"}, \
66	{WB_REASON_FS_FREE_SPACE, "fs_free_space"}, \
67	{WB_REASON_FORKER_THREAD, "forker_thread"}
68	#endif
69
70	DECLARE_EVENT_CLASS(writeback_work_class,
71	TP_PROTO(struct backing_dev_info bdi, struct wb_writeback_work work),
72	TP_ARGS(bdi, work),
73	TP_STRUCT__entry(
74	__array(char, name, 32)
75	__field(long, nr_pages)
76	__field(dev_t, sb_dev)
77	__field(int, sync_mode)
78	__field(int, for_kupdate)
79	__field(int, range_cyclic)
80	__field(int, for_background)
81	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
82	__field(int, reason)
83	#endif
84	),
85	TP_fast_assign(
86	tp_memcpy(name, dev_name(bdi->dev ? bdi->dev :
87	default_backing_dev_info.dev), 32)
88	tp_assign(nr_pages, work->nr_pages)
89	tp_assign(sb_dev, work->sb ? work->sb->s_dev : 0)
90	tp_assign(sync_mode, work->sync_mode)
91	tp_assign(for_kupdate, work->for_kupdate)
92	tp_assign(range_cyclic, work->range_cyclic)
93	tp_assign(for_background, work->for_background)
94	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
95	tp_assign(reason, work->reason)
96	#endif
97	),
98	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
99	TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
100	"kupdate=%d range_cyclic=%d background=%d reason=%s",
101	__entry->name,
102	MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
103	__entry->nr_pages,
104	__entry->sync_mode,
105	__entry->for_kupdate,
106	__entry->range_cyclic,
107	__entry->for_background,
108	__print_symbolic(__entry->reason, WB_WORK_REASON)
109	)
110	#else
111	TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
112	"kupdate=%d range_cyclic=%d background=%d",
113	__entry->name,
114	MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev),
115	__entry->nr_pages,
116	__entry->sync_mode,
117	__entry->for_kupdate,
118	__entry->range_cyclic,
119	__entry->for_background
120	)
121	#endif
122	)
123	#define DEFINE_WRITEBACK_WORK_EVENT(name) \
124	DEFINE_EVENT(writeback_work_class, name, \
125	TP_PROTO(struct backing_dev_info bdi, struct wb_writeback_work work), \
126	TP_ARGS(bdi, work))
127	DEFINE_WRITEBACK_WORK_EVENT(writeback_nothread)
128	DEFINE_WRITEBACK_WORK_EVENT(writeback_queue)
129	DEFINE_WRITEBACK_WORK_EVENT(writeback_exec)
130	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
131	DEFINE_WRITEBACK_WORK_EVENT(writeback_start)
132	DEFINE_WRITEBACK_WORK_EVENT(writeback_written)
133	DEFINE_WRITEBACK_WORK_EVENT(writeback_wait)
134	#endif
135
136	TRACE_EVENT(writeback_pages_written,
137	TP_PROTO(long pages_written),
138	TP_ARGS(pages_written),
139	TP_STRUCT__entry(
140	__field(long, pages)
141	),
142	TP_fast_assign(
143	tp_assign(pages, pages_written)
144	),
145	TP_printk("%ld", __entry->pages)
146	)
147
148	DECLARE_EVENT_CLASS(writeback_class,
149	TP_PROTO(struct backing_dev_info *bdi),
150	TP_ARGS(bdi),
151	TP_STRUCT__entry(
152	__array(char, name, 32)
153	),
154	TP_fast_assign(
155	tp_memcpy(name, dev_name(bdi->dev), 32)
156	),
157	TP_printk("bdi %s",
158	__entry->name
159	)
160	)
161	#define DEFINE_WRITEBACK_EVENT(name) \
162	DEFINE_EVENT(writeback_class, name, \
163	TP_PROTO(struct backing_dev_info *bdi), \
164	TP_ARGS(bdi))
165
166	DEFINE_WRITEBACK_EVENT(writeback_nowork)
167	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,38))
168	DEFINE_WRITEBACK_EVENT(writeback_wake_background)
169	#endif
170	DEFINE_WRITEBACK_EVENT(writeback_wake_thread)
171	DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread)
172	DEFINE_WRITEBACK_EVENT(writeback_bdi_register)
173	DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister)
174	DEFINE_WRITEBACK_EVENT(writeback_thread_start)
175	DEFINE_WRITEBACK_EVENT(writeback_thread_stop)
176	#if (LTTNG_KERNEL_RANGE(3,1,0, 3,2,0))
177	DEFINE_WRITEBACK_EVENT(balance_dirty_start)
178	DEFINE_WRITEBACK_EVENT(balance_dirty_wait)
179
180	TRACE_EVENT(balance_dirty_written,
181
182	TP_PROTO(struct backing_dev_info *bdi, int written),
183
184	TP_ARGS(bdi, written),
185
186	TP_STRUCT__entry(
187	__array(char, name, 32)
188	__field(int, written)
189	),
190
191	TP_fast_assign(
192	tp_memcpy(name, dev_name(bdi->dev), 32)
193	tp_assign(written, written)
194	),
195
196	TP_printk("bdi %s written %d",
197	__entry->name,
198	__entry->written
199	)
200	)
201	#endif
202
203	DECLARE_EVENT_CLASS(wbc_class,
204	TP_PROTO(struct writeback_control wbc, struct backing_dev_info bdi),
205	TP_ARGS(wbc, bdi),
206	TP_STRUCT__entry(
207	__array(char, name, 32)
208	__field(long, nr_to_write)
209	__field(long, pages_skipped)
210	__field(int, sync_mode)
211	__field(int, for_kupdate)
212	__field(int, for_background)
213	__field(int, for_reclaim)
214	__field(int, range_cyclic)
215	#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
216	__field(int, more_io)
217	__field(unsigned long, older_than_this)
218	#endif
219	__field(long, range_start)
220	__field(long, range_end)
221	),
222
223	TP_fast_assign(
224	tp_memcpy(name, dev_name(bdi->dev), 32)
225	tp_assign(nr_to_write, wbc->nr_to_write)
226	tp_assign(pages_skipped, wbc->pages_skipped)
227	tp_assign(sync_mode, wbc->sync_mode)
228	tp_assign(for_kupdate, wbc->for_kupdate)
229	tp_assign(for_background, wbc->for_background)
230	tp_assign(for_reclaim, wbc->for_reclaim)
231	tp_assign(range_cyclic, wbc->range_cyclic)
232	#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
233	tp_assign(more_io, wbc->more_io)
234	tp_assign(older_than_this, wbc->older_than_this ?
235	*wbc->older_than_this : 0)
236	#endif
237	tp_assign(range_start, (long)wbc->range_start)
238	tp_assign(range_end, (long)wbc->range_end)
239	),
240
241	TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
242	#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
243	"bgrd=%d reclm=%d cyclic=%d more=%d older=0x%lx "
244	#else
245	"bgrd=%d reclm=%d cyclic=%d "
246	#endif
247	"start=0x%lx end=0x%lx",
248	__entry->name,
249	__entry->nr_to_write,
250	__entry->pages_skipped,
251	__entry->sync_mode,
252	__entry->for_kupdate,
253	__entry->for_background,
254	__entry->for_reclaim,
255	__entry->range_cyclic,
256	#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
257	__entry->more_io,
258	__entry->older_than_this,
259	#endif
260	__entry->range_start,
261	__entry->range_end)
262	)
263
264	#define DEFINE_WBC_EVENT(name) \
265	DEFINE_EVENT(wbc_class, name, \
266	TP_PROTO(struct writeback_control wbc, struct backing_dev_info bdi), \
267	TP_ARGS(wbc, bdi))
268	#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0))
269	DEFINE_WBC_EVENT(wbc_writeback_start)
270	DEFINE_WBC_EVENT(wbc_writeback_written)
271	DEFINE_WBC_EVENT(wbc_writeback_wait)
272	DEFINE_WBC_EVENT(wbc_balance_dirty_start)
273	DEFINE_WBC_EVENT(wbc_balance_dirty_written)
274	DEFINE_WBC_EVENT(wbc_balance_dirty_wait)
275	#endif
276	DEFINE_WBC_EVENT(wbc_writepage)
277
278	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
279	TRACE_EVENT(writeback_queue_io,
280	TP_PROTO(struct bdi_writeback *wb,
281	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
282	struct wb_writeback_work *work,
283	#else
284	unsigned long *older_than_this,
285	#endif
286	int moved),
287	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
288	TP_ARGS(wb, work, moved),
289	#else
290	TP_ARGS(wb, older_than_this, moved),
291	#endif
292	TP_STRUCT__entry(
293	__array(char, name, 32)
294	__field(unsigned long, older)
295	__field(long, age)
296	__field(int, moved)
297	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
298	__field(int, reason)
299	#endif
300	),
301	TP_fast_assign(
302	tp_memcpy(name, dev_name(wb->bdi->dev), 32)
303	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
304	tp_assign(older,
305	work->older_than_this ? *(work->older_than_this) : 0)
306	tp_assign(age, work->older_than_this ?
307	(jiffies - (work->older_than_this)) 1000 / HZ : -1)
308	#else
309	tp_assign(older, older_than_this ? *older_than_this : 0)
310	tp_assign(age, older_than_this ?
311	(jiffies - older_than_this) 1000 / HZ : -1)
312	#endif
313	tp_assign(moved, moved)
314	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
315	tp_assign(reason, work->reason)
316	#endif
317	),
318	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
319	TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s",
320	__entry->name,
321	__entry->older, /* older_than_this in jiffies */
322	__entry->age, /* older_than_this in relative milliseconds */
323	__entry->moved,
324	__print_symbolic(__entry->reason, WB_WORK_REASON)
325	)
326	#else
327	TP_printk("bdi %s: older=%lu age=%ld enqueue=%d",
328	__entry->name,
329	__entry->older, /* older_than_this in jiffies */
330	__entry->age, /* older_than_this in relative milliseconds */
331	__entry->moved
332	)
333	#endif
334	)
335
336	TRACE_EVENT(global_dirty_state,
337
338	TP_PROTO(unsigned long background_thresh,
339	unsigned long dirty_thresh
340	),
341
342	TP_ARGS(background_thresh,
343	dirty_thresh
344	),
345
346	TP_STRUCT__entry(
347	__field(unsigned long, nr_dirty)
348	__field(unsigned long, nr_writeback)
349	__field(unsigned long, nr_unstable)
350	__field(unsigned long, background_thresh)
351	__field(unsigned long, dirty_thresh)
352	__field(unsigned long, dirty_limit)
353	__field(unsigned long, nr_dirtied)
354	__field(unsigned long, nr_written)
355	),
356
357	TP_fast_assign(
358	tp_assign(nr_dirty, global_page_state(NR_FILE_DIRTY))
359	tp_assign(nr_writeback, global_page_state(NR_WRITEBACK))
360	tp_assign(nr_unstable, global_page_state(NR_UNSTABLE_NFS))
361	tp_assign(nr_dirtied, global_page_state(NR_DIRTIED))
362	tp_assign(nr_written, global_page_state(NR_WRITTEN))
363	tp_assign(background_thresh, background_thresh)
364	tp_assign(dirty_thresh, dirty_thresh)
365	tp_assign(dirty_limit, global_dirty_limit)
366	),
367
368	TP_printk("dirty=%lu writeback=%lu unstable=%lu "
369	"bg_thresh=%lu thresh=%lu limit=%lu "
370	"dirtied=%lu written=%lu",
371	__entry->nr_dirty,
372	__entry->nr_writeback,
373	__entry->nr_unstable,
374	__entry->background_thresh,
375	__entry->dirty_thresh,
376	__entry->dirty_limit,
377	__entry->nr_dirtied,
378	__entry->nr_written
379	)
380	)
381	#endif
382
383	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
384
385	#define KBps(x) ((x) << (PAGE_SHIFT - 10))
386
387	TRACE_EVENT(bdi_dirty_ratelimit,
388
389	TP_PROTO(struct backing_dev_info *bdi,
390	unsigned long dirty_rate,
391	unsigned long task_ratelimit),
392
393	TP_ARGS(bdi, dirty_rate, task_ratelimit),
394
395	TP_STRUCT__entry(
396	__array(char, bdi, 32)
397	__field(unsigned long, write_bw)
398	__field(unsigned long, avg_write_bw)
399	__field(unsigned long, dirty_rate)
400	__field(unsigned long, dirty_ratelimit)
401	__field(unsigned long, task_ratelimit)
402	__field(unsigned long, balanced_dirty_ratelimit)
403	),
404
405	TP_fast_assign(
406	tp_memcpy(bdi, dev_name(bdi->dev), 32)
407	tp_assign(write_bw, KBps(bdi->write_bandwidth))
408	tp_assign(avg_write_bw, KBps(bdi->avg_write_bandwidth))
409	tp_assign(dirty_rate, KBps(dirty_rate))
410	tp_assign(dirty_ratelimit, KBps(bdi->dirty_ratelimit))
411	tp_assign(task_ratelimit, KBps(task_ratelimit))
412	tp_assign(balanced_dirty_ratelimit,
413	KBps(bdi->balanced_dirty_ratelimit))
414	),
415
416	TP_printk("bdi %s: "
417	"write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
418	"dirty_ratelimit=%lu task_ratelimit=%lu "
419	"balanced_dirty_ratelimit=%lu",
420	__entry->bdi,
421	__entry->write_bw, /* write bandwidth */
422	__entry->avg_write_bw, /* avg write bandwidth */
423	__entry->dirty_rate, /* bdi dirty rate */
424	__entry->dirty_ratelimit, /* base ratelimit */
425	__entry->task_ratelimit, /* ratelimit with position control */
426	__entry->balanced_dirty_ratelimit /* the balanced ratelimit */
427	)
428	)
429
430	TRACE_EVENT(balance_dirty_pages,
431
432	TP_PROTO(struct backing_dev_info *bdi,
433	unsigned long thresh,
434	unsigned long bg_thresh,
435	unsigned long dirty,
436	unsigned long bdi_thresh,
437	unsigned long bdi_dirty,
438	unsigned long dirty_ratelimit,
439	unsigned long task_ratelimit,
440	unsigned long dirtied,
441	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
442	unsigned long period,
443	#endif
444	long pause,
445	unsigned long start_time),
446
447	TP_ARGS(bdi, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
448	dirty_ratelimit, task_ratelimit,
449	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
450	dirtied, period, pause, start_time),
451	#else
452	dirtied, pause, start_time),
453	#endif
454	TP_STRUCT__entry(
455	__array( char, bdi, 32)
456	__field(unsigned long, limit)
457	__field(unsigned long, setpoint)
458	__field(unsigned long, dirty)
459	__field(unsigned long, bdi_setpoint)
460	__field(unsigned long, bdi_dirty)
461	__field(unsigned long, dirty_ratelimit)
462	__field(unsigned long, task_ratelimit)
463	__field(unsigned int, dirtied)
464	__field(unsigned int, dirtied_pause)
465	__field(unsigned long, paused)
466	__field( long, pause)
467	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
468	__field(unsigned long, period)
469	__field( long, think)
470	#endif
471	),
472
473	TP_fast_assign(
474	tp_memcpy(bdi, dev_name(bdi->dev), 32)
475	tp_assign(limit, global_dirty_limit)
476	tp_assign(setpoint,
477	(global_dirty_limit + (thresh + bg_thresh) / 2) / 2)
478	tp_assign(dirty, dirty)
479	tp_assign(bdi_setpoint,
480	((global_dirty_limit + (thresh + bg_thresh) / 2) / 2) *
481	bdi_thresh / (thresh + 1))
482	tp_assign(bdi_dirty, bdi_dirty)
483	tp_assign(dirty_ratelimit, KBps(dirty_ratelimit))
484	tp_assign(task_ratelimit, KBps(task_ratelimit))
485	tp_assign(dirtied, dirtied)
486	tp_assign(dirtied_pause, current->nr_dirtied_pause)
487	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
488	tp_assign(think, current->dirty_paused_when == 0 ? 0 :
489	(long)(jiffies - current->dirty_paused_when) * 1000/HZ)
490	tp_assign(period, period * 1000 / HZ)
491	#endif
492	tp_assign(pause, pause * 1000 / HZ)
493	tp_assign(paused, (jiffies - start_time) * 1000 / HZ)
494	),
495
496
497	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
498	TP_printk("bdi %s: "
499	"limit=%lu setpoint=%lu dirty=%lu "
500	"bdi_setpoint=%lu bdi_dirty=%lu "
501	"dirty_ratelimit=%lu task_ratelimit=%lu "
502	"dirtied=%u dirtied_pause=%u "
503	"paused=%lu pause=%ld period=%lu think=%ld",
504	__entry->bdi,
505	__entry->limit,
506	__entry->setpoint,
507	__entry->dirty,
508	__entry->bdi_setpoint,
509	__entry->bdi_dirty,
510	__entry->dirty_ratelimit,
511	__entry->task_ratelimit,
512	__entry->dirtied,
513	__entry->dirtied_pause,
514	__entry->paused, /* ms */
515	__entry->pause, /* ms */
516	__entry->period, /* ms */
517	__entry->think /* ms */
518	)
519	#else
520	TP_printk("bdi %s: "
521	"limit=%lu setpoint=%lu dirty=%lu "
522	"bdi_setpoint=%lu bdi_dirty=%lu "
523	"dirty_ratelimit=%lu task_ratelimit=%lu "
524	"dirtied=%u dirtied_pause=%u "
525	"paused=%lu pause=%ld",
526	__entry->bdi,
527	__entry->limit,
528	__entry->setpoint,
529	__entry->dirty,
530	__entry->bdi_setpoint,
531	__entry->bdi_dirty,
532	__entry->dirty_ratelimit,
533	__entry->task_ratelimit,
534	__entry->dirtied,
535	__entry->dirtied_pause,
536	__entry->paused, /* ms */
537	__entry->pause /* ms */
538	)
539	#endif
540	)
541	#endif
542
543	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0))
544	TRACE_EVENT(writeback_sb_inodes_requeue,
545
546	TP_PROTO(struct inode *inode),
547	TP_ARGS(inode),
548
549	TP_STRUCT__entry(
550	__array(char, name, 32)
551	__field(unsigned long, ino)
552	__field(unsigned long, state)
553	__field(unsigned long, dirtied_when)
554	),
555
556	TP_fast_assign(
557	tp_memcpy(name, dev_name(inode_to_bdi(inode)->dev), 32)
558	tp_assign(ino, inode->i_ino)
559	tp_assign(state, inode->i_state)
560	tp_assign(dirtied_when, inode->dirtied_when)
561	),
562
563	TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu",
564	__entry->name,
565	__entry->ino,
566	show_inode_state(__entry->state),
567	__entry->dirtied_when,
568	(jiffies - __entry->dirtied_when) / HZ
569	)
570	)
571	#endif
572
573	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
574	DECLARE_EVENT_CLASS(writeback_congest_waited_template,
575
576	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
577
578	TP_ARGS(usec_timeout, usec_delayed),
579
580	TP_STRUCT__entry(
581	__field( unsigned int, usec_timeout )
582	__field( unsigned int, usec_delayed )
583	),
584
585	TP_fast_assign(
586	tp_assign(usec_timeout, usec_timeout)
587	tp_assign(usec_delayed, usec_delayed)
588	),
589
590	TP_printk("usec_timeout=%u usec_delayed=%u",
591	__entry->usec_timeout,
592	__entry->usec_delayed)
593	)
594
595	DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait,
596
597	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
598
599	TP_ARGS(usec_timeout, usec_delayed)
600	)
601
602	DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested,
603
604	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),
605
606	TP_ARGS(usec_timeout, usec_delayed)
607	)
608	#endif
609
610	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
611	DECLARE_EVENT_CLASS(writeback_single_inode_template,
612
613	TP_PROTO(struct inode *inode,
614	struct writeback_control *wbc,
615	unsigned long nr_to_write
616	),
617
618	TP_ARGS(inode, wbc, nr_to_write),
619
620	TP_STRUCT__entry(
621	__array(char, name, 32)
622	__field(unsigned long, ino)
623	__field(unsigned long, state)
624	__field(unsigned long, dirtied_when)
625	__field(unsigned long, writeback_index)
626	__field(long, nr_to_write)
627	__field(unsigned long, wrote)
628	),
629
630	TP_fast_assign(
631	tp_memcpy(name, dev_name(inode_to_bdi(inode)->dev), 32)
632	tp_assign(ino, inode->i_ino)
633	tp_assign(state, inode->i_state)
634	tp_assign(dirtied_when, inode->dirtied_when)
635	tp_assign(writeback_index, inode->i_mapping->writeback_index)
636	tp_assign(nr_to_write, nr_to_write)
637	tp_assign(wrote, nr_to_write - wbc->nr_to_write)
638	),
639
640	TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
641	"index=%lu to_write=%ld wrote=%lu",
642	__entry->name,
643	__entry->ino,
644	show_inode_state(__entry->state),
645	__entry->dirtied_when,
646	(jiffies - __entry->dirtied_when) / HZ,
647	__entry->writeback_index,
648	__entry->nr_to_write,
649	__entry->wrote
650	)
651	)
652
653	#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0))
654	DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_requeue,
655	TP_PROTO(struct inode *inode,
656	struct writeback_control *wbc,
657	unsigned long nr_to_write),
658	TP_ARGS(inode, wbc, nr_to_write)
659	)
660	#endif
661
662	DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
663	TP_PROTO(struct inode *inode,
664	struct writeback_control *wbc,
665	unsigned long nr_to_write),
666	TP_ARGS(inode, wbc, nr_to_write)
667	)
668	#endif
669
670	#endif /* _TRACE_WRITEBACK_H */
671
672	/* This part must be outside protection */
673	#include "../../../probes/define_trace.h"