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kernel_arpi/include/trace/events
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Chuck Lever 622db5b643 RDMA/core: Add trace points to follow MR allocation 
Track the lifetime of ib_mr objects. Here's sample output from a test run
with NFS/RDMA:

           <...>-361   [009] 79238.772782: mr_alloc:             pd.id=3 mr.id=11 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79238.772812: mr_alloc:             pd.id=3 mr.id=12 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79238.772839: mr_alloc:             pd.id=3 mr.id=13 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79238.772866: mr_alloc:             pd.id=3 mr.id=14 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79238.772893: mr_alloc:             pd.id=3 mr.id=15 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79238.772921: mr_alloc:             pd.id=3 mr.id=16 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79238.772947: mr_alloc:             pd.id=3 mr.id=17 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79238.772974: mr_alloc:             pd.id=3 mr.id=18 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79238.773001: mr_alloc:             pd.id=3 mr.id=19 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79238.773028: mr_alloc:             pd.id=3 mr.id=20 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79238.773055: mr_alloc:             pd.id=3 mr.id=21 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79240.270942: mr_alloc:             pd.id=3 mr.id=22 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79240.270975: mr_alloc:             pd.id=3 mr.id=23 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79240.271007: mr_alloc:             pd.id=3 mr.id=24 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79240.271036: mr_alloc:             pd.id=3 mr.id=25 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79240.271067: mr_alloc:             pd.id=3 mr.id=26 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79240.271095: mr_alloc:             pd.id=3 mr.id=27 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79240.271121: mr_alloc:             pd.id=3 mr.id=28 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79240.271153: mr_alloc:             pd.id=3 mr.id=29 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79240.271181: mr_alloc:             pd.id=3 mr.id=30 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79240.271208: mr_alloc:             pd.id=3 mr.id=31 type=MEM_REG max_num_sg=30 rc=0
           <...>-361   [009] 79240.271236: mr_alloc:             pd.id=3 mr.id=32 type=MEM_REG max_num_sg=30 rc=0
           <...>-4351  [001] 79242.299400: mr_dereg:             mr.id=32
           <...>-4351  [001] 79242.299467: mr_dereg:             mr.id=31
           <...>-4351  [001] 79242.299554: mr_dereg:             mr.id=30
           <...>-4351  [001] 79242.299615: mr_dereg:             mr.id=29
           <...>-4351  [001] 79242.299684: mr_dereg:             mr.id=28
           <...>-4351  [001] 79242.299748: mr_dereg:             mr.id=27
           <...>-4351  [001] 79242.299812: mr_dereg:             mr.id=26
           <...>-4351  [001] 79242.299874: mr_dereg:             mr.id=25
           <...>-4351  [001] 79242.299944: mr_dereg:             mr.id=24
           <...>-4351  [001] 79242.300009: mr_dereg:             mr.id=23
           <...>-4351  [001] 79242.300190: mr_dereg:             mr.id=22
           <...>-4351  [001] 79242.300263: mr_dereg:             mr.id=21
           <...>-4351  [001] 79242.300326: mr_dereg:             mr.id=20
           <...>-4351  [001] 79242.300388: mr_dereg:             mr.id=19
           <...>-4351  [001] 79242.300450: mr_dereg:             mr.id=18
           <...>-4351  [001] 79242.300516: mr_dereg:             mr.id=17
           <...>-4351  [001] 79242.300629: mr_dereg:             mr.id=16
           <...>-4351  [001] 79242.300718: mr_dereg:             mr.id=15
           <...>-4351  [001] 79242.300784: mr_dereg:             mr.id=14
           <...>-4351  [001] 79242.300879: mr_dereg:             mr.id=13
           <...>-4351  [001] 79242.300945: mr_dereg:             mr.id=12
           <...>-4351  [001] 79242.301012: mr_dereg:             mr.id=11

Some features of the output:
- The lifetime and owner PD of each MR is clearly visible.
- The type of MR is captured, as is the SGE array size.
- Failing MR allocation can be recorded.

Link: https://lore.kernel.org/r/20191218201820.30584.34636.stgit@manet.1015granger.net
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-01-07 16:10:53 -04:00
..
9p.h
…
afs.h
Merge tag 'afs-next-20190628' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
2019-07-10 20:55:33 -07:00
alarmtimer.h
…
asoc.h
…
bcache.h
bcache: print number of keys in trace_bcache_journal_write
2018-12-13 08:15:54 -07:00
block.h
…
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: rename btrfs_block_group_cache
2019-11-18 17:51:51 +01:00
cachefiles.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
cgroup.h
cgroup: use cgrp->kn->id as the cgroup ID
2019-11-12 08:18:04 -08:00
clk.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282
2019-06-05 17:36:37 +02:00
cma.h
…
compaction.h
mm, compaction: some tracepoints should be defined only when CONFIG_COMPACTION is set
2019-05-14 09:47:46 -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
devfreq.h
trace: events: add devfreq trace event file
2019-04-16 09:29:18 +09:00
devlink.h
devlink: Add support for direct reporter health state update
2019-03-04 11:00:43 -08:00
dma_fence.h
tracing: Fix header include guards in trace event headers
2019-07-30 21:49:06 -04:00
erofs.h
erofs: use erofs_inode naming
2019-09-05 20:10:07 +02:00
ext4.h
ext4: Reserve revoke credits for freed blocks
2019-11-05 16:00:49 -05:00
f2fs.h
Merge tag 'f2fs-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
2019-07-12 17:28:24 -07:00
fib6.h
ipv6: Add fib6_type and fib6_flags to fib6_result
2019-04-17 23:11:30 -07:00
fib.h
net: Replace nhc_has_gw with nhc_gw_family
2019-04-08 15:22:40 -07:00
filelock.h
locks: revise generic_add_lease tracepoint
2019-07-22 06:54:41 -04:00
filemap.h
…
fs_dax.h
…
fscache.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
fsi_master_aspeed.h
fsi: aspeed: Add trace points
2019-11-08 11:28:20 +01:00
fsi_master_ast_cf.h
…
fsi_master_gpio.h
…
fsi.h
trace: fsi: Print transfer size unsigned
2019-11-08 11:23:37 +01:00
gpio.h
tracing: stop making gpio tracing configurable
2019-04-08 15:11:48 +02:00
host1x.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
hswadsp.h
…
huge_memory.h
…
hwmon.h
hwmon: (core) Add trace events to _attr_show/store functions
2018-10-11 20:07:35 -07:00
i2c.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
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_iommu.h
iommu/vt-d: Add trace events for device dma map/unmap
2019-09-11 12:34:30 +02:00
intel_ish.h
…
intel-sst.h
…
io_uring.h
io_uring: improve trace_io_uring_defer() trace point
2019-11-25 19:56:10 -07:00
iocost.h
blkcg: blk-iocost: predeclare used structs
2019-08-29 09:43:34 -06:00
iommu.h
…
ipi.h
…
irq_matrix.h
…
irq.h
…
iscsi.h
scsi: iscsi: Capture iscsi debug messages using tracepoints
2018-12-20 20:03:55 -05:00
jbd2.h
jbd2: Provide trace event for handle restarts
2019-11-05 16:00:49 -05:00
kmem.h
rss_stat: add support to detect RSS updates of external mm
2019-12-01 06:29:18 -08:00
kvm.h
…
kyber.h
kyber: fix wrong strlcpy() size in trace_kyber_latency()
2018-11-12 08:28:37 -07:00
libata.h
…
lock.h
…
mce.h
…
mdio.h
…
migrate.h
mm, sched/numa: Remove rate-limiting of automatic NUMA balancing migration
2018-10-02 11:31:14 +02:00
mlxsw.h
mlxsw: spectrum_acl: Rename rehash_dis trace
2019-03-31 11:01:23 -07:00
mmc.h
…
mmflags.h
mm: workingset: tell cache transitions from workingset thrashing
2018-10-26 16:26:32 -07:00
module.h
…
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_probe_common.h
…
net.h
net: add a generic tracepoint for TX queue timeout
2019-05-04 00:41:41 -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
…
page_isolation.h
…
page_pool.h
page_pool: Add API to update numa node
2019-11-20 11:47:36 -08:00
page_ref.h
…
pagemap.h
…
percpu.h
…
power_cpu_migrate.h
…
power.h
PM: QoS: Get rid of unused flags
2019-08-21 00:38:54 +02:00
preemptirq.h
treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively
2019-04-09 14:19:06 +02:00
printk.h
…
pwc.h
media: usb: pwc: Introduce TRACE_EVENTs for pwc_isoc_handler()
2019-01-16 11:15:11 -05:00
qdisc.h
tracing: Fix header include guards in trace event headers
2019-07-30 21:49:06 -04:00
random.h
random: only read from /dev/random after its pool has received 128 bits
2019-04-17 10:30:21 -04:00
rcu.h
rcu: Update descriptions for rcu_future_grace_period tracepoint
2019-10-30 08:34:52 -07:00
rdma_core.h
RDMA/core: Add trace points to follow MR allocation
2020-01-07 16:10:53 -04:00
rdma.h
…
regulator.h
…
rpcgss.h
SUNRPC: Trace gssproxy upcall results
2019-10-30 16:32:07 -04:00
rpcrdma.h
Merge tag 'nfsd-5.5' of git://linux-nfs.org/~bfields/linux
2019-12-07 16:56:00 -08:00
rpm.h
…
rseq.h
…
rtc.h
…
rxrpc.h
rxrpc: Fix trace-after-put looking at the put call record
2019-10-07 11:05:05 +01:00
sched.h
sched/debug: Add sched_overutilized tracepoint
2019-06-24 19:23:42 +02:00
scsi.h
…
sctp.h
…
signal.h
signal: Distinguish between kernel_siginfo and siginfo
2018-10-03 16:47:43 +02:00
siox.h
…
skb.h
…
smbus.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
sock.h
tcp: annotate sk->sk_wmem_queued lockless reads
2019-10-13 10:13:08 -07:00
spi.h
spi/trace: Cap buffer contents at 64 bytes
2019-05-02 10:37:52 +09:00
spmi.h
…
sunrpc.h
Merge tag 'nfsd-5.5' of git://linux-nfs.org/~bfields/linux
2019-12-07 16:56:00 -08:00
sunvnet.h
…
swiotlb.h
…
syscalls.h
syscalls: Remove start and number from syscall_get_arguments() args
2019-04-05 09:26:43 -04:00
target.h
…
task.h
…
tcp.h
tcp: remove redundant new line from tcp_event_sk_skb
2019-11-09 19:41:50 -08:00
tegra_apb_dma.h
tracing: Fix header include guards in trace event headers
2019-07-30 21:49:06 -04:00
thermal_power_allocator.h
…
thermal.h
…
thp.h
…
timer.h
Merge tag 'y2038-cleanups-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground
2019-12-01 14:00:59 -08:00
tlb.h
…
udp.h
…
ufs.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284
2019-06-05 17:36:37 +02:00
v4l2.h
…
vb2.h
…
vmscan.h
mm/vmscan: simplify trace_reclaim_flags and trace_shrink_flags
2019-05-14 09:47:51 -07:00
vsock_virtio_transport_common.h
…
wbt.h
block: Fix writeback throttling W=1 compiler warnings
2019-10-07 08:31:59 -06:00
workqueue.h
treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively
2019-04-09 14:19:06 +02:00
writeback.h
writeback: fix -Wformat compilation warnings
2019-11-25 07:50:41 -08:00
xdp.h
page_pool: do not release pool until inflight == 0.
2019-11-16 12:39:10 -08:00
xen.h
treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively
2019-04-09 14:19:06 +02:00