Qu Wenruo b8bea09a45 btrfs: add trace event for submitted RAID56 bio ... Add tracepoint for better insight to how the RAID56 data are submitted. The output looks like this: (trace event header and UUID skipped) raid56_read_partial: full_stripe=389152768 devid=3 type=DATA1 offset=32768 opf=0x0 physical=323059712 len=32768 raid56_read_partial: full_stripe=389152768 devid=1 type=DATA2 offset=0 opf=0x0 physical=67174400 len=65536 raid56_write_stripe: full_stripe=389152768 devid=3 type=DATA1 offset=0 opf=0x1 physical=323026944 len=32768 raid56_write_stripe: full_stripe=389152768 devid=2 type=PQ1 offset=0 opf=0x1 physical=323026944 len=32768 The above debug output is from a 32K data write into an empty RAID56 data chunk. Some explanation on the event output: full_stripe: the logical bytenr of the full stripe devid: btrfs devid type: raid stripe type. DATA1: the first data stripe DATA2: the second data stripe PQ1: the P stripe PQ2: the Q stripe offset: the offset inside the stripe. opf: the bio op type physical: the physical offset the bio is for len: the length of the bio The first two lines are from partial RMW read, which is reading the remaining data stripes from disks. The last two lines are for full stripe RMW write, which is writing the involved two 16K stripes (one for DATA1 stripe, one for P stripe). The stripe for DATA2 doesn't need to be written. There are 5 types of trace events: - raid56_read_partial Read remaining data for regular read/write path. - raid56_write_stripe Write the modified stripes for regular read/write path. - raid56_scrub_read_recover Read remaining data for scrub recovery path. - raid56_scrub_write_stripe Write the modified stripes for scrub path. - raid56_scrub_read Read remaining data for scrub path. Also, since the trace events are included at super.c, we have to export needed structure definitions to 'raid56.h' and include the header in super.c, or we're unable to access those members. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> [ reformat comments ] Signed-off-by: David Sterba <dsterba@suse.com>		2022-07-25 17:44:34 +02:00
..
9p.h
afs.h	netfs, 9p, afs, ceph: Use folios	2021-11-10 21:16:56 +00:00
alarmtimer.h
asoc.h	ASoC: soc-core: tidyup jack.h	2020-11-30 12:54:01 +00:00
avc.h	selinux: add basic filtering for audit trace events	2020-08-21 17:07:29 -04:00
bcache.h	block: remove superfluous param in blk_fill_rwbs()	2021-02-22 06:37:41 -07:00
block.h	block: introduce block_rq_error tracepoint	2022-02-11 10:00:16 -07:00
bpf_test_run.h	selftests: bpf: test writable buffers in raw tps	2019-04-26 19:04:19 -07:00
bridge.h	net: bridge: fdb: br_fdb_update can take flags directly	2019-11-01 10:32:43 -07:00
btrfs.h	btrfs: add trace event for submitted RAID56 bio	2022-07-25 17:44:34 +02:00
cachefiles.h	cachefiles: add tracepoints for on-demand read mode	2022-05-18 00:11:18 +08:00
cgroup.h	cgroup: Trace event cgroup id fields should be u64	2021-12-01 07:23:35 -10:00
clk.h	clk: Trace clk_set_rate() "range" functions	2020-12-17 01:54:31 -08:00
cma.h	mm, tracing: unify PFN format strings	2021-06-29 10:53:52 -07:00
compaction.h	tracing: incorrect gfp_t conversion	2022-05-13 07:20:18 -07:00
context_tracking.h
cpuhp.h	treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively	2019-04-09 14:19:06 +02:00
damon.h	mm/damon: hide kernel pointer from tracepoint event	2022-01-15 16:30:33 +02:00
devfreq.h	PM / devfreq: Add tracepoint for frequency changes	2020-10-26 10:52:37 +09:00
devlink.h	devlink: Reduce struct devlink exposure	2021-10-12 16:29:16 -07:00
dlm.h	fs: dlm: trace socket handling	2021-11-02 14:39:20 -05:00
dma_fence.h	treewide: Add missing semicolons to __assign_str uses	2021-06-30 09:19:14 -04:00
erofs.h	erofs: clean up erofs_map_blocks tracepoints	2021-12-09 10:02:10 +08:00
error_report.h	panic: use error_report_end tracepoint on warnings	2022-01-20 08:52:55 +02:00
ext4.h	fs: Remove flags parameter from aops->write_begin	2022-05-08 14:28:19 -04:00
f2fs.h	f2fs-for-5.19	2022-05-31 16:52:59 -07:00
fib.h	net: Replace nhc_has_gw with nhc_gw_family	2019-04-08 15:22:40 -07:00
fib6.h	ipv6: Add fib6_type and fib6_flags to fib6_result	2019-04-17 23:11:30 -07:00
filelock.h	locks: Remove extra "0x" in tracepoint format specifier	2020-09-01 18:09:34 -04:00
filemap.h	filemap: Convert tracing of page cache operations to folio	2022-01-04 13:15:33 -05:00
fs.h	NFS: Move generic FS show macros to global header	2021-11-02 12:31:23 -04:00
fs_dax.h
fscache.h	fscache: Add a tracepoint for cookie use/unuse	2022-01-11 22:13:01 +00:00
fsi.h	fsi: Add trace events in initialization path	2022-02-21 19:38:54 +10:30
fsi_master_aspeed.h	fsi: Add trace events in initialization path	2022-02-21 19:38:54 +10:30
fsi_master_ast_cf.h
fsi_master_gpio.h
gpio.h	tracing: stop making gpio tracing configurable	2019-04-08 15:11:48 +02:00
gpu_mem.h	gpu/trace: Minor comment updates for gpu_mem_total tracepoint	2020-05-07 13:32:57 -04:00
host1x.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1	2019-05-21 11:28:39 +02:00
huge_memory.h	mm/khugepaged: remove reuse_swap_page() usage	2022-03-24 19:06:51 -07:00
hwmon.h
i2c.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36	2019-05-24 17:27:11 +02:00
i2c_slave.h	i2c: add tracepoints for I2C slave events	2022-03-20 00:11:05 +01:00
ib_mad.h	IB/MAD: Add SMP details to MAD tracing	2019-03-27 15:52:01 -03:00
ib_umad.h	IB/UMAD: Add umad trace points	2019-03-27 15:52:01 -03:00
initcall.h
intel-sst.h
intel_ifs.h	trace: platform/x86/intel/ifs: Add trace point to track Intel IFS operations	2022-05-12 15:35:29 +02:00
intel_iommu.h	iommu/vt-d: Add prq_report trace event	2021-06-10 09:06:13 +02:00
intel_ish.h
io_uring.h	io_uring: move io_uring_get_opcode out of TP_printk	2022-06-23 08:40:36 -06:00
iocost.h	blk-iocost: tracing: atomic64_read(&ioc->vtime_rate) is assigned an extra semicolon	2022-07-12 16:36:37 -04:00
iommu.h	iommu: Log iova range in map/unmap trace events	2021-12-06 11:59:31 +01:00
ipi.h
irq.h
irq_matrix.h
iscsi.h	scsi: iscsi: Capture iscsi debug messages using tracepoints	2018-12-20 20:03:55 -05:00
jbd2.h	jbd2,ext4: add a shrinker to release checkpointed buffers	2021-06-24 10:54:49 -04:00
kmem.h	mm/page_alloc: fix tracepoint mm_page_alloc_zone_locked()	2022-05-19 14:08:54 -07:00
kvm.h	KVM: x86/mmu: Drop trace_kvm_age_page() tracepoint	2021-04-17 08:30:56 -04:00
kyber.h	kyber: avoid q->disk dereferences in trace points	2021-10-15 21:02:57 -06:00
libata.h	ata: libata: add qc->flags in ata_qc_complete_template tracepoint	2022-06-17 16:30:03 +09:00
lock.h	locking/mutex: Make contention tracepoints more consistent wrt adaptive spinning	2022-04-05 10:24:36 +02:00
mce.h
mctp.h	mctp: Add SIOCMCTP{ALLOC,DROP}TAG ioctls for tag control	2022-02-09 12:00:11 +00:00
mdio.h
migrate.h	mm/migration: add trace events for base page and HugeTLB migrations	2022-03-24 19:06:45 -07:00
mlxsw.h	mlxsw: spectrum_acl: Rename rehash_dis trace	2019-03-31 11:01:23 -07:00
mmap.h	mm: mmap: add trace point of vm_unmapped_area	2020-04-02 09:35:30 -07:00
mmap_lock.h	mm: mmap_lock: use DECLARE_EVENT_CLASS and DEFINE_EVENT_FN	2021-11-06 13:30:36 -07:00
mmc.h
mmflags.h	include/trace/events/mmflags.h: cleanup for "tracing: incorrect gfp_t conversion"	2022-05-25 10:47:47 -07:00
module.h
mptcp.h	mptcp: dump infinite_map field in mptcp_dump_mpext	2022-04-23 11:51:05 +01:00
napi.h	tracing: Fix header include guards in trace event headers	2019-07-30 21:49:06 -04:00
nbd.h	nbd: add tracepoints for send/receive timing	2019-04-26 19:04:19 -07:00
neigh.h	neighbor: Add tracepoint to __neigh_create	2019-05-22 17:50:24 -07:00
net.h	net: dev: Makes sure netif_rx() can be invoked in any context.	2022-02-14 13:38:35 +00:00
net_probe_common.h
netfs.h	netfs: Add a function to consolidate beginning a read	2022-03-18 09:29:05 +00:00
netlink.h	netlink: add tracepoint at NL_SET_ERR_MSG	2021-02-04 18:05:59 -08:00
nfs.h	NFS: Move NFS protocol display macros to global header	2021-11-02 12:31:23 -04:00
nilfs2.h
nmi.h
objagg.h	lib: introduce initial implementation of object aggregation manager	2018-11-15 14:43:43 -08:00
oom.h
osnoise.h	tracing: Fix spelling in osnoise tracer "interferences" -> "interference"	2021-06-28 14:12:27 -04:00
page_isolation.h
page_pool.h	mm, tracing: unify PFN format strings	2021-06-29 10:53:52 -07:00
page_ref.h	mm: introduce PAGEFLAGS_MASK to replace ((1UL << NR_PAGEFLAGS) - 1)	2021-09-08 11:50:24 -07:00
pagemap.h	mm/lru: Convert __pagevec_lru_add_fn to take a folio	2021-10-18 07:49:40 -04:00
percpu.h	include/trace/events/percpu.h: cleanup for "percpu: improve percpu_alloc_percpu event trace"	2022-05-25 10:47:48 -07:00
power.h	PM: QoS: Simplify definitions of CPU latency QoS trace events	2020-02-13 11:26:39 +01:00
power_cpu_migrate.h
preemptirq.h	tracing: Change offset type to s32 in preempt/irq tracepoints	2020-01-03 11:34:37 -05:00
printk.h
pwc.h	media: usb: pwc: Introduce TRACE_EVENTs for pwc_isoc_handler()	2019-01-16 11:15:11 -05:00
pwm.h	pwm: Implement tracing for .get_state() and .apply_state()	2020-01-20 12:28:37 +01:00
qdisc.h	qdisc: add new field for qdisc_enqueue tracepoint	2021-07-27 14:16:38 +01:00
qla.h	scsi: qla2xxx: Suppress two recently introduced compiler warnings	2020-05-19 21:43:01 -04:00
qrtr.h	net: qrtr: Add tracepoint support	2020-04-22 12:55:54 -07:00
rcu.h	rcu: Refactor rcu_barrier() empty-list handling	2022-02-08 10:12:28 -08:00
rdma.h	RDMA/core: Move the rdma_show_ib_cm_event() macro	2020-08-24 16:01:47 -03:00
rdma_core.h	RDMA/core: Add trace points to follow MR allocation	2020-01-07 16:10:53 -04:00
regulator.h	regulator: core: Add regulator bypass trace points	2020-05-29 17:17:02 +01:00
rpcgss.h	sunrpc: fix header include guard in trace header	2021-11-17 18:27:32 -05:00
rpcrdma.h	A slow cycle for nfsd: mainly cleanup, including Neil's patch dropping	2021-11-10 16:45:54 -08:00
rpm.h	PM-runtime: add tracepoints for usage_count changes	2020-01-13 12:28:29 +01:00
rseq.h
rtc.h
rxrpc.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-05-23 21:19:17 -07:00
sched.h	sched/tracing: Append prev_state to tp args instead	2022-05-12 00:37:11 +02:00
scmi.h	include: trace: Add new scmi_xfer_response_wait event	2021-12-13 17:45:36 +00:00
scsi.h	scsi: core: Kill message byte	2021-05-31 22:48:24 -04:00
sctp.h	sctp: move trace_sctp_probe_path into sctp_outq_sack	2019-12-26 13:06:45 -08:00
signal.h
siox.h
skb.h	tcp: add drop reason support to tcp_ofo_queue()	2022-04-17 13:31:32 +01:00
smbus.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36	2019-05-24 17:27:11 +02:00
sock.h	net: sock: tracing: Fix sock_exceed_buf_limit not to dereference stale pointer	2022-07-08 12:06:17 +01:00
spi.h	spi: Enable tracing of the SPI setup CS selection	2021-05-26 21:22:13 +01:00
spmi.h
sunrpc.h	SUNRPC: Remove svc_rqst::rq_xprt_hlen	2022-05-19 12:25:39 -04:00
sunrpc_base.h	SUNRPC: Tracepoints should display tk_pid and cl_clid as a fixed-size field	2021-10-20 18:09:54 -04:00
sunvnet.h
swiotlb.h	swiotlb: make the swiotlb_init interface more useful	2022-04-18 07:21:11 +02:00
syscalls.h	syscalls: Remove start and number from syscall_get_arguments() args	2019-04-05 09:26:43 -04:00
target.h	scsi: target: core: Add CONTROL field for trace events	2020-10-02 18:36:19 -04:00
task.h
tcp.h	tcp: Add tracepoint for tcp_set_ca_state	2022-04-07 20:33:15 -07:00
tegra_apb_dma.h	tracing: Fix header include guards in trace event headers	2019-07-30 21:49:06 -04:00
thermal.h	thermal: devfreq_cooling: change tracing function and arguments	2020-12-11 14:10:44 +01:00
thermal_power_allocator.h
thermal_pressure.h	arch_topology: Trace the update thermal pressure	2022-05-06 09:57:38 +02:00
thp.h	mm/migration: add trace events for THP migrations	2022-03-24 19:06:45 -07:00
timer.h	tracing/timer: Add missing argument documentation of trace points	2022-04-14 16:14:49 +02:00
tlb.h
udp.h
ufs.h	scsi: ufs: core: Enable power management for wlun	2021-05-10 22:28:20 -04:00
v4l2.h	media: v4l2: abstract timeval handling in v4l2_buffer	2020-01-03 15:43:35 +01:00
vb2.h
vmscan.h	tracing: incorrect isolate_mote_t cast in mm_vmscan_lru_isolate	2022-05-19 14:08:55 -07:00
vsock_virtio_transport_common.h	virtio/vsock: update trace event for SEQPACKET	2021-06-11 13:32:47 -07:00
wbt.h	bdi: use bdi_dev_name() to get device name	2020-05-09 16:07:39 -06:00
workqueue.h	workqueue: Fix type of cpu in trace event	2022-06-07 07:09:47 -10:00
writeback.h	remove congestion tracking framework	2022-03-22 15:57:01 -07:00
xdp.h	xdp: Extend xdp_redirect_map with broadcast support	2021-05-26 09:46:16 +02:00
xen.h	x86/mm/tlb: Flush remote and local TLBs concurrently	2021-03-06 12:59:10 +01:00