FM / events

/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/trace/events/

/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/trace/events

Name	Size	Mode	Actions
9p.h	5218	0644	edit dl rm
afs.h	17619	0644	edit dl rm
alarmtimer.h	2087	0644	edit dl rm
asoc.h	5300	0644	edit dl rm
avc.h	1292	0644	edit dl rm
bcache.h	11165	0644	edit dl rm
block.h	16779	0644	edit dl rm
bpf_test_run.h	1048	0644	edit dl rm
bridge.h	3509	0644	edit dl rm
btrfs.h	49763	0644	edit dl rm
cachefiles.h	8350	0644	edit dl rm
cgroup.h	4387	0644	edit dl rm
clk.h	3777	0644	edit dl rm
cma.h	1339	0644	edit dl rm
compaction.h	8089	0644	edit dl rm
context_tracking.h	1177	0644	edit dl rm
cpuhp.h	1871	0644	edit dl rm
damon.h	1162	0644	edit dl rm
devlink.h	7376	0644	edit dl rm
dma_fence.h	1700	0644	edit dl rm
ext4.h	68625	0644	edit dl rm
f2fs.h	37224	0644	edit dl rm
fib.h	2285	0644	edit dl rm
fib6.h	2423	0644	edit dl rm
filelock.h	7394	0644	edit dl rm
filemap.h	2804	0644	edit dl rm
fs.h	3373	0644	edit dl rm
fscache.h	15208	0644	edit dl rm
fsi.h	2880	0644	edit dl rm
fsi_master_gpio.h	1576	0644	edit dl rm
fs_dax.h	8456	0644	edit dl rm
gpio.h	1158	0644	edit dl rm
host1x.h	5798	0644	edit dl rm
huge_memory.h	4531	0644	edit dl rm
i2c.h	4254	0644	edit dl rm
ib_mad.h	12719	0644	edit dl rm
ib_umad.h	4095	0644	edit dl rm
initcall.h	1310	0644	edit dl rm
intel-sst.h	2571	0644	edit dl rm
intel_ifs.h	860	0644	edit dl rm
intel_iommu.h	2297	0644	edit dl rm
intel_ish.h	556	0644	edit dl rm
iocost.h	5044	0644	edit dl rm
iommu.h	3201	0644	edit dl rm
io_uring.h	12079	0644	edit dl rm
ipi.h	2956	0644	edit dl rm
irq.h	3889	0644	edit dl rm
irq_matrix.h	5055	0644	edit dl rm
iscsi.h	2336	0644	edit dl rm
jbd2.h	10487	0644	edit dl rm
kmem.h	7811	0644	edit dl rm
kvm.h	11423	0644	edit dl rm
kyber.h	2435	0644	edit dl rm
libata.h	11812	0644	edit dl rm
lock.h	1737	0644	edit dl rm
mce.h	1897	0644	edit dl rm
mdio.h	1048	0644	edit dl rm
migrate.h	1958	0644	edit dl rm
mlxsw.h	2682	0644	edit dl rm
mmc.h	7412	0644	edit dl rm
mmflags.h	8509	0644	edit dl rm
module.h	2851	0644	edit dl rm
mptcp.h	4374	0644	edit dl rm
napi.h	1013	0644	edit dl rm
neigh.h	5882	0644	edit dl rm
net.h	7210	0644	edit dl rm
netlink.h	490	0644	edit dl rm
net_probe_common.h	1235	0644	edit dl rm
nfs.h	13994	0644	edit dl rm
nilfs2.h	5326	0644	edit dl rm
nmi.h	780	0644	edit dl rm
objagg.h	4691	0644	edit dl rm
oom.h	3973	0644	edit dl rm
osnoise.h	3010	0644	edit dl rm
pagemap.h	2191	0644	edit dl rm
page_isolation.h	943	0644	edit dl rm
page_pool.h	2650	0644	edit dl rm
page_ref.h	3034	0644	edit dl rm
percpu.h	2669	0644	edit dl rm
power.h	12169	0644	edit dl rm
power_cpu_migrate.h	1625	0644	edit dl rm
preemptirq.h	2163	0644	edit dl rm
printk.h	786	0644	edit dl rm
pwc.h	1714	0644	edit dl rm
qdisc.h	3847	0644	edit dl rm
qla.h	937	0644	edit dl rm
qrtr.h	2604	0644	edit dl rm
random.h	7621	0644	edit dl rm
rcu.h	24866	0644	edit dl rm
rdma.h	4337	0644	edit dl rm
rdma_core.h	7193	0644	edit dl rm
regulator.h	2456	0644	edit dl rm
rpcgss.h	14712	0644	edit dl rm
rpcrdma.h	50120	0644	edit dl rm
rpm.h	2394	0644	edit dl rm
rseq.h	1288	0644	edit dl rm
rtc.h	3354	0644	edit dl rm
rxrpc.h	41684	0644	edit dl rm
sched.h	15300	0644	edit dl rm
scsi.h	12614	0644	edit dl rm
sctp.h	2634	0644	edit dl rm
signal.h	3486	0644	edit dl rm
siox.h	2041	0644	edit dl rm
skb.h	1863	0644	edit dl rm
smbus.h	7715	0644	edit dl rm
sock.h	4547	0644	edit dl rm
sof.h	3364	0644	edit dl rm
sof_intel.h	4131	0644	edit dl rm
spi.h	3387	0644	edit dl rm
spmi.h	3336	0644	edit dl rm
sunrpc.h	56806	0644	edit dl rm
sunrpc_base.h	474	0644	edit dl rm
sunvnet.h	3129	0644	edit dl rm
swiotlb.h	1050	0644	edit dl rm
syscalls.h	1512	0644	edit dl rm
target.h	7697	0644	edit dl rm
task.h	1526	0644	edit dl rm
tcp.h	7111	0644	edit dl rm
thermal.h	5559	0644	edit dl rm
thermal_power_allocator.h	3297	0644	edit dl rm
thp.h	2137	0644	edit dl rm
timer.h	10321	0644	edit dl rm
tlb.h	1439	0644	edit dl rm
udp.h	632	0644	edit dl rm
ufs.h	7670	0644	edit dl rm
v4l2.h	9018	0644	edit dl rm
vb2.h	1769	0644	edit dl rm
vmscan.h	12784	0644	edit dl rm
vsock_virtio_transport_common.h	3572	0644	edit dl rm
wbt.h	3907	0644	edit dl rm
workqueue.h	2793	0644	edit dl rm
writeback.h	23360	0644	edit dl rm
xdp.h	10050	0644	edit dl rm
xen.h	14889	0644	edit dl rm

Edit: /usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/trace/events/writeback.h (23360B)

/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM writeback

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

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

#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_REFERENCED,		"I_REFERENCED"}		\
	)

/* enums need to be exported to user space */
#undef EM
#undef EMe
#define EM(a,b) 	TRACE_DEFINE_ENUM(a);
#define EMe(a,b)	TRACE_DEFINE_ENUM(a);

#define WB_WORK_REASON							\
	EM( WB_REASON_BACKGROUND,		"background")		\
	EM( WB_REASON_VMSCAN,			"vmscan")		\
	EM( WB_REASON_SYNC,			"sync")			\
	EM( WB_REASON_PERIODIC,			"periodic")		\
	EM( WB_REASON_LAPTOP_TIMER,		"laptop_timer")		\
	EM( WB_REASON_FREE_MORE_MEM,		"free_more_memory")	\
	EM( WB_REASON_FS_FREE_SPACE,		"fs_free_space")	\
	EMe(WB_REASON_FORKER_THREAD,		"forker_thread")

WB_WORK_REASON

/*
 * Now redefine the EM() and EMe() macros to map the enums to the strings
 * that will be printed in the output.
 */
#undef EM
#undef EMe
#define EM(a,b)		{ a, b },
#define EMe(a,b)	{ a, b }

struct wb_writeback_work;

DECLARE_EVENT_CLASS(writeback_page_template,

TP_PROTO(struct page *page, struct address_space *mapping),

TP_ARGS(page, mapping),

TP_STRUCT__entry (
		__array(char, name, 32)
		__field(unsigned long, ino)
		__field(pgoff_t, index)
	),

TP_fast_assign(
		strscpy_pad(__entry->name,
			    bdi_dev_name(mapping ? inode_to_bdi(mapping->host) :
					 NULL), 32);
		__entry->ino = (mapping && mapping->host) ? mapping->host->i_ino : 0;
		__entry->index = page->index;
	),

TP_printk("bdi %s: ino=%lu index=%lu",
		__entry->name,
		__entry->ino,
		__entry->index
	)
);

DEFINE_EVENT(writeback_page_template, writeback_dirty_page,

TP_PROTO(struct page *page, struct address_space *mapping),

TP_ARGS(page, mapping)
);

DEFINE_EVENT(writeback_page_template, wait_on_page_writeback,

TP_PROTO(struct page *page, struct address_space *mapping),

TP_ARGS(page, mapping)
);

DECLARE_EVENT_CLASS(writeback_dirty_inode_template,

TP_PROTO(struct inode *inode, int flags),

TP_ARGS(inode, flags),

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

TP_fast_assign(
		struct backing_dev_info *bdi = inode_to_bdi(inode);

/* may be called for files on pseudo FSes w/ unregistered bdi */
		strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
		__entry->ino		= inode->i_ino;
		__entry->state		= inode->i_state;
		__entry->flags		= flags;
	),

TP_printk("bdi %s: ino=%lu state=%s flags=%s",
		__entry->name,
		__entry->ino,
		show_inode_state(__entry->state),
		show_inode_state(__entry->flags)
	)
);

DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty,

TP_PROTO(struct inode *inode, int flags),

TP_ARGS(inode, flags)
);

DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,

TP_PROTO(struct inode *inode, int flags),

TP_ARGS(inode, flags)
);

DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode,

TP_PROTO(struct inode *inode, int flags),

TP_ARGS(inode, flags)
);

#ifdef CREATE_TRACE_POINTS
#ifdef CONFIG_CGROUP_WRITEBACK

static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb)
{
	return cgroup_ino(wb->memcg_css->cgroup);
}

static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc)
{
	if (wbc->wb)
		return __trace_wb_assign_cgroup(wbc->wb);
	else
		return -1U;
}
#else	/* CONFIG_CGROUP_WRITEBACK */

static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb)
{
	return -1U;
}

static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc)
{
	return -1U;
}

#endif	/* CONFIG_CGROUP_WRITEBACK */
#endif	/* CREATE_TRACE_POINTS */

#ifdef CONFIG_CGROUP_WRITEBACK
TRACE_EVENT(inode_foreign_history,

TP_PROTO(struct inode *inode, struct writeback_control *wbc,
		 unsigned int history),

TP_ARGS(inode, wbc, history),

TP_STRUCT__entry(
		__array(char,		name, 32)
		__field(unsigned long,	ino)
		__field(unsigned int,	cgroup_ino)
		__field(unsigned int,	history)
	),

TP_fast_assign(
		strncpy(__entry->name, dev_name(inode_to_bdi(inode)->dev), 32);
		__entry->ino		= inode->i_ino;
		__entry->cgroup_ino	= __trace_wbc_assign_cgroup(wbc);
		__entry->history	= history;
	),

TP_printk("bdi %s: ino=%lu cgroup_ino=%u history=0x%x",
		__entry->name,
		__entry->ino,
		__entry->cgroup_ino,
		__entry->history
	)
);

TRACE_EVENT(inode_switch_wbs,

TP_PROTO(struct inode *inode, struct bdi_writeback *old_wb,
		 struct bdi_writeback *new_wb),

TP_ARGS(inode, old_wb, new_wb),

TP_STRUCT__entry(
		__array(char,		name, 32)
		__field(unsigned long,	ino)
		__field(unsigned int,	old_cgroup_ino)
		__field(unsigned int,	new_cgroup_ino)
	),

TP_fast_assign(
		strncpy(__entry->name,	dev_name(old_wb->bdi->dev), 32);
		__entry->ino		= inode->i_ino;
		__entry->old_cgroup_ino	= __trace_wb_assign_cgroup(old_wb);
		__entry->new_cgroup_ino	= __trace_wb_assign_cgroup(new_wb);
	),

TP_printk("bdi %s: ino=%lu old_cgroup_ino=%u new_cgroup_ino=%u",
		__entry->name,
		__entry->ino,
		__entry->old_cgroup_ino,
		__entry->new_cgroup_ino
	)
);

TRACE_EVENT(track_foreign_dirty,

TP_PROTO(struct page *page, struct bdi_writeback *wb),

TP_ARGS(page, wb),

TP_STRUCT__entry(
		__array(char,		name, 32)
		__field(u64,		bdi_id)
		__field(unsigned long,	ino)
		__field(unsigned int,	memcg_id)
		__field(unsigned int,	cgroup_ino)
		__field(unsigned int,	page_cgroup_ino)
	),

TP_fast_assign(
		struct address_space *mapping = page_mapping(page);
		struct inode *inode = mapping ? mapping->host : NULL;

strncpy(__entry->name,	dev_name(wb->bdi->dev), 32);
		__entry->bdi_id		= wb->bdi->id;
		__entry->ino		= inode ? inode->i_ino : 0;
		__entry->memcg_id	= wb->memcg_css->id;
		__entry->cgroup_ino	= __trace_wb_assign_cgroup(wb);
		__entry->page_cgroup_ino = cgroup_ino(page_memcg(page)->css.cgroup);
	),

TP_printk("bdi %s[%llu]: ino=%lu memcg_id=%u cgroup_ino=%u page_cgroup_ino=%u",
		__entry->name,
		__entry->bdi_id,
		__entry->ino,
		__entry->memcg_id,
		__entry->cgroup_ino,
		__entry->page_cgroup_ino
	)
);

TRACE_EVENT(flush_foreign,

TP_PROTO(struct bdi_writeback *wb, unsigned int frn_bdi_id,
		 unsigned int frn_memcg_id),

TP_ARGS(wb, frn_bdi_id, frn_memcg_id),

TP_STRUCT__entry(
		__array(char,		name, 32)
		__field(unsigned int,	cgroup_ino)
		__field(unsigned int,	frn_bdi_id)
		__field(unsigned int,	frn_memcg_id)
	),

TP_fast_assign(
		strncpy(__entry->name,	dev_name(wb->bdi->dev), 32);
		__entry->cgroup_ino	= __trace_wb_assign_cgroup(wb);
		__entry->frn_bdi_id	= frn_bdi_id;
		__entry->frn_memcg_id	= frn_memcg_id;
	),

TP_printk("bdi %s: cgroup_ino=%u frn_bdi_id=%u frn_memcg_id=%u",
		__entry->name,
		__entry->cgroup_ino,
		__entry->frn_bdi_id,
		__entry->frn_memcg_id
	)
);
#endif

DECLARE_EVENT_CLASS(writeback_write_inode_template,

TP_PROTO(struct inode *inode, struct writeback_control *wbc),

TP_ARGS(inode, wbc),

TP_STRUCT__entry (
		__array(char, name, 32)
		__field(unsigned long, ino)
		__field(int, sync_mode)
		__field(unsigned int, cgroup_ino)
	),

TP_fast_assign(
		strscpy_pad(__entry->name,
			    bdi_dev_name(inode_to_bdi(inode)), 32);
		__entry->ino		= inode->i_ino;
		__entry->sync_mode	= wbc->sync_mode;
		__entry->cgroup_ino	= __trace_wbc_assign_cgroup(wbc);
	),

TP_printk("bdi %s: ino=%lu sync_mode=%d cgroup_ino=%u",
		__entry->name,
		__entry->ino,
		__entry->sync_mode,
		__entry->cgroup_ino
	)
);

DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode_start,

TP_PROTO(struct inode *inode, struct writeback_control *wbc),

TP_ARGS(inode, wbc)
);

DEFINE_EVENT(writeback_write_inode_template, writeback_write_inode,

TP_PROTO(struct inode *inode, struct writeback_control *wbc),

TP_ARGS(inode, wbc)
);

DECLARE_EVENT_CLASS(writeback_work_class,
	TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work),
	TP_ARGS(wb, 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)
		__field(int, reason)
		__field(unsigned int, cgroup_ino)
	),
	TP_fast_assign(
		strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
		__entry->nr_pages = work->nr_pages;
		__entry->sb_dev = work->sb ? work->sb->s_dev : 0;
		__entry->sync_mode = work->sync_mode;
		__entry->for_kupdate = work->for_kupdate;
		__entry->range_cyclic = work->range_cyclic;
		__entry->for_background	= work->for_background;
		__entry->reason = work->reason;
		__entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
	),
	TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d "
		  "kupdate=%d range_cyclic=%d background=%d reason=%s cgroup_ino=%u",
		  __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),
		  __entry->cgroup_ino
	)
);
#define DEFINE_WRITEBACK_WORK_EVENT(name) \
DEFINE_EVENT(writeback_work_class, name, \
	TP_PROTO(struct bdi_writeback *wb, struct wb_writeback_work *work), \
	TP_ARGS(wb, work))
DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
DEFINE_WRITEBACK_WORK_EVENT(writeback_written);
DEFINE_WRITEBACK_WORK_EVENT(writeback_wait);

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

DECLARE_EVENT_CLASS(writeback_class,
	TP_PROTO(struct bdi_writeback *wb),
	TP_ARGS(wb),
	TP_STRUCT__entry(
		__array(char, name, 32)
		__field(unsigned int, cgroup_ino)
	),
	TP_fast_assign(
		strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
		__entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
	),
	TP_printk("bdi %s: cgroup_ino=%u",
		  __entry->name,
		  __entry->cgroup_ino
	)
);
#define DEFINE_WRITEBACK_EVENT(name) \
DEFINE_EVENT(writeback_class, name, \
	TP_PROTO(struct bdi_writeback *wb), \
	TP_ARGS(wb))

DEFINE_WRITEBACK_EVENT(writeback_wake_background);

TRACE_EVENT(writeback_bdi_register,
	TP_PROTO(struct backing_dev_info *bdi),
	TP_ARGS(bdi),
	TP_STRUCT__entry(
		__array(char, name, 32)
	),
	TP_fast_assign(
		strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
	),
	TP_printk("bdi %s",
		__entry->name
	)
);

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)
		__field(long, range_start)
		__field(long, range_end)
		__field(unsigned int, cgroup_ino)
	),

TP_fast_assign(
		strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
		__entry->nr_to_write	= wbc->nr_to_write;
		__entry->pages_skipped	= wbc->pages_skipped;
		__entry->sync_mode	= wbc->sync_mode;
		__entry->for_kupdate	= wbc->for_kupdate;
		__entry->for_background	= wbc->for_background;
		__entry->for_reclaim	= wbc->for_reclaim;
		__entry->range_cyclic	= wbc->range_cyclic;
		__entry->range_start	= (long)wbc->range_start;
		__entry->range_end	= (long)wbc->range_end;
		__entry->cgroup_ino	= __trace_wbc_assign_cgroup(wbc);
	),

TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d "
		"bgrd=%d reclm=%d cyclic=%d "
		"start=0x%lx end=0x%lx cgroup_ino=%u",
		__entry->name,
		__entry->nr_to_write,
		__entry->pages_skipped,
		__entry->sync_mode,
		__entry->for_kupdate,
		__entry->for_background,
		__entry->for_reclaim,
		__entry->range_cyclic,
		__entry->range_start,
		__entry->range_end,
		__entry->cgroup_ino
	)
)

#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))
DEFINE_WBC_EVENT(wbc_writepage);

TRACE_EVENT(writeback_queue_io,
	TP_PROTO(struct bdi_writeback *wb,
		 struct wb_writeback_work *work,
		 unsigned long dirtied_before,
		 int moved),
	TP_ARGS(wb, work, dirtied_before, moved),
	TP_STRUCT__entry(
		__array(char,		name, 32)
		__field(unsigned long,	older)
		__field(long,		age)
		__field(int,		moved)
		__field(int,		reason)
		__field(unsigned int,	cgroup_ino)
	),
	TP_fast_assign(
		strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
		__entry->older	= dirtied_before;
		__entry->age	= (jiffies - dirtied_before) * 1000 / HZ;
		__entry->moved	= moved;
		__entry->reason	= work->reason;
		__entry->cgroup_ino	= __trace_wb_assign_cgroup(wb);
	),
	TP_printk("bdi %s: older=%lu age=%ld enqueue=%d reason=%s cgroup_ino=%u",
		__entry->name,
		__entry->older,	/* dirtied_before in jiffies */
		__entry->age,	/* dirtied_before in relative milliseconds */
		__entry->moved,
		__print_symbolic(__entry->reason, WB_WORK_REASON),
		__entry->cgroup_ino
	)
);

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,	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(
		__entry->nr_dirty	= global_node_page_state(NR_FILE_DIRTY);
		__entry->nr_writeback	= global_node_page_state(NR_WRITEBACK);
		__entry->nr_dirtied	= global_node_page_state(NR_DIRTIED);
		__entry->nr_written	= global_node_page_state(NR_WRITTEN);
		__entry->background_thresh = background_thresh;
		__entry->dirty_thresh	= dirty_thresh;
		__entry->dirty_limit	= global_wb_domain.dirty_limit;
	),

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

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

TRACE_EVENT(bdi_dirty_ratelimit,

TP_PROTO(struct bdi_writeback *wb,
		 unsigned long dirty_rate,
		 unsigned long task_ratelimit),

TP_ARGS(wb, 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)
		__field(unsigned int,	cgroup_ino)
	),

TP_fast_assign(
		strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
		__entry->write_bw	= KBps(wb->write_bandwidth);
		__entry->avg_write_bw	= KBps(wb->avg_write_bandwidth);
		__entry->dirty_rate	= KBps(dirty_rate);
		__entry->dirty_ratelimit = KBps(wb->dirty_ratelimit);
		__entry->task_ratelimit	= KBps(task_ratelimit);
		__entry->balanced_dirty_ratelimit =
					KBps(wb->balanced_dirty_ratelimit);
		__entry->cgroup_ino	= __trace_wb_assign_cgroup(wb);
	),

TP_printk("bdi %s: "
		  "write_bw=%lu awrite_bw=%lu dirty_rate=%lu "
		  "dirty_ratelimit=%lu task_ratelimit=%lu "
		  "balanced_dirty_ratelimit=%lu cgroup_ino=%u",
		  __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 */
		  __entry->cgroup_ino
	)
);

TRACE_EVENT(balance_dirty_pages,

TP_PROTO(struct bdi_writeback *wb,
		 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,
		 unsigned long period,
		 long pause,
		 unsigned long start_time),

TP_ARGS(wb, thresh, bg_thresh, dirty, bdi_thresh, bdi_dirty,
		dirty_ratelimit, task_ratelimit,
		dirtied, period, pause, start_time),

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)
		__field(unsigned long,	period)
		__field(	 long,	think)
		__field(unsigned int,	cgroup_ino)
	),

TP_fast_assign(
		unsigned long freerun = (thresh + bg_thresh) / 2;
		strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);

__entry->limit		= global_wb_domain.dirty_limit;
		__entry->setpoint	= (global_wb_domain.dirty_limit +
						freerun) / 2;
		__entry->dirty		= dirty;
		__entry->bdi_setpoint	= __entry->setpoint *
						bdi_thresh / (thresh + 1);
		__entry->bdi_dirty	= bdi_dirty;
		__entry->dirty_ratelimit = KBps(dirty_ratelimit);
		__entry->task_ratelimit	= KBps(task_ratelimit);
		__entry->dirtied	= dirtied;
		__entry->dirtied_pause	= current->nr_dirtied_pause;
		__entry->think		= current->dirty_paused_when == 0 ? 0 :
			 (long)(jiffies - current->dirty_paused_when) * 1000/HZ;
		__entry->period		= period * 1000 / HZ;
		__entry->pause		= pause * 1000 / HZ;
		__entry->paused		= (jiffies - start_time) * 1000 / HZ;
		__entry->cgroup_ino	= __trace_wb_assign_cgroup(wb);
	),

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 cgroup_ino=%u",
		  __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 */
		  __entry->cgroup_ino
	  )
);

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)
		__field(unsigned int, cgroup_ino)
	),

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

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(
		__entry->usec_timeout	= usec_timeout;
		__entry->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)
);

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)
		__field(unsigned int, cgroup_ino)
	),

TP_fast_assign(
		strscpy_pad(__entry->name,
			    bdi_dev_name(inode_to_bdi(inode)), 32);
		__entry->ino		= inode->i_ino;
		__entry->state		= inode->i_state;
		__entry->dirtied_when	= inode->dirtied_when;
		__entry->writeback_index = inode->i_mapping->writeback_index;
		__entry->nr_to_write	= nr_to_write;
		__entry->wrote		= nr_to_write - wbc->nr_to_write;
		__entry->cgroup_ino	= __trace_wbc_assign_cgroup(wbc);
	),

TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
		  "index=%lu to_write=%ld wrote=%lu cgroup_ino=%u",
		  __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,
		  __entry->cgroup_ino
	)
);

DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_start,
	TP_PROTO(struct inode *inode,
		 struct writeback_control *wbc,
		 unsigned long nr_to_write),
	TP_ARGS(inode, wbc, nr_to_write)
);

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)
);

DECLARE_EVENT_CLASS(writeback_inode_template,
	TP_PROTO(struct inode *inode),

TP_ARGS(inode),

TP_STRUCT__entry(
		__field(	dev_t,	dev			)
		__field(unsigned long,	ino			)
		__field(unsigned long,	state			)
		__field(	__u16, mode			)
		__field(unsigned long, dirtied_when		)
	),

TP_fast_assign(
		__entry->dev	= inode->i_sb->s_dev;
		__entry->ino	= inode->i_ino;
		__entry->state	= inode->i_state;
		__entry->mode	= inode->i_mode;
		__entry->dirtied_when = inode->dirtied_when;
	),

TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
		  MAJOR(__entry->dev), MINOR(__entry->dev),
		  __entry->ino, __entry->dirtied_when,
		  show_inode_state(__entry->state), __entry->mode)
);

DEFINE_EVENT(writeback_inode_template, writeback_lazytime,
	TP_PROTO(struct inode *inode),

TP_ARGS(inode)
);

DEFINE_EVENT(writeback_inode_template, writeback_lazytime_iput,
	TP_PROTO(struct inode *inode),

TP_ARGS(inode)
);

DEFINE_EVENT(writeback_inode_template, writeback_dirty_inode_enqueue,

TP_PROTO(struct inode *inode),

TP_ARGS(inode)
);

/*
 * Inode writeback list tracking.
 */

DEFINE_EVENT(writeback_inode_template, sb_mark_inode_writeback,
	TP_PROTO(struct inode *inode),
	TP_ARGS(inode)
);

DEFINE_EVENT(writeback_inode_template, sb_clear_inode_writeback,
	TP_PROTO(struct inode *inode),
	TP_ARGS(inode)
);

#endif /* _TRACE_WRITEBACK_H */

/* This part must be outside protection */
#include <trace/define_trace.h>

cmd: