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Subject[PATCH RESEND v1 00/11] perf mem: Support AUX trace and Arm SPE
Date
This patch set is to support AUX trace and Arm SPE as the first enabled
hardware tracing for Perf memory tool.

Patches 01 ~ 04 are preparasion patches which mainly resolve the issue
for memory events, since the existed code is hard coded the memory
events which based on x86 and PowerPC architectures, so patches 01 ~ 04
extend to support more flexible memory event name, and introduce weak
functions so can allow every architecture to define its own memory
events structure and returning event pointer and name respectively.

Patch 05 is used to extend Perf memory tool to support AUX trace.

Patch 06 ~ 11 are to support Arm SPE with Perf memory tool. Firstly it
registers SPE events for memory events, then it extends the SPE packet
to pass addresses info and operation types, and also set 'data_src'
field so can allow the tool to display readable string in the result.

This patch set has been tested on ARMv8 Hisilicon D06 platform. I noted
now the 'data object' cannot be displayed properly, this should be
another issue so need to check separately. Below is testing result:

# Samples: 73 of event 'l1d-miss'
# Total weight : 73
# Sort order : local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked
#
# Overhead Samples Local Weight Memory access Symbol Shared Object Data Symbol Data Object Snoop TLB access Locked
# ........ ............ ............ ........................ .................................. ................. ............................................................ .................. ............ ...................... ......
#
2.74% 2 0 L1 or L1 miss [k] perf_iterate_ctx.constprop.151 [kernel.kallsyms] [k] 0xffff2027aacb08a8 [unknown] N/A N/A No
2.74% 2 0 L1 or L1 miss [k] perf_iterate_ctx.constprop.151 [kernel.kallsyms] [k] 0xffff2027be6488a8 [unknown] N/A N/A No
2.74% 2 0 L1 or L1 miss [k] perf_iterate_ctx.constprop.151 [kernel.kallsyms] [k] 0xffff2027c432f8a8 [unknown] N/A N/A No
1.37% 1 0 L1 or L1 miss [k] __arch_copy_to_user [kernel.kallsyms] [k] 0xffff0027a65352a0 [unknown] N/A N/A No
1.37% 1 0 L1 or L1 miss [k] __d_lookup_rcu [kernel.kallsyms] [k] 0xffff0027d3cbf468 [unknown] N/A N/A No
1.37% 1 0 L1 or L1 miss [k] __d_lookup_rcu [kernel.kallsyms] [k] 0xffff0027d8f44490 [unknown] N/A N/A No
[...]


# Samples: 101 of event 'l1d-access'
# Total weight : 101
# Sort order : local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked
#
# Overhead Samples Local Weight Memory access Symbol Shared Object Data Symbol Data Object Snoop TLB access Locked
# ........ ............ ............ ........................ .................................. ................. ............................................................ ...................... ............ ...................... ......
#
2.97% 3 0 L1 or L1 hit [k] perf_event_mmap [kernel.kallsyms] [k] perf_swevent+0x5c [kernel.kallsyms].data N/A N/A No
1.98% 2 0 L1 or L1 hit [k] kmem_cache_alloc [kernel.kallsyms] [k] 0xffff2027af40e3d0 [unknown] N/A N/A No
1.98% 2 0 L1 or L1 hit [k] perf_iterate_ctx.constprop.151 [kernel.kallsyms] [k] 0xffff2027aacb08a8 [unknown] N/A N/A No
1.98% 2 0 L1 or L1 hit [k] perf_iterate_ctx.constprop.151 [kernel.kallsyms] [k] 0xffff2027be6488a8 [unknown] N/A N/A No
1.98% 2 0 L1 or L1 hit [k] perf_iterate_ctx.constprop.151 [kernel.kallsyms] [k] 0xffff2027c432f8a8 [unknown] N/A N/A No
0.99% 1 0 L1 or L1 hit [k] __arch_copy_to_user [kernel.kallsyms] [k] 0xffff0027a65352a0 [unknown] N/A N/A No
0.99% 1 0 L1 or L1 hit [k] __d_lookup_rcu [kernel.kallsyms] [k] 0xffff0027d3cbf468 [unknown] N/A N/A No
0.99% 1 0 L1 or L1 hit [k] __d_lookup_rcu [kernel.kallsyms] [k] 0xffff0027d8f44490 [unknown] N/A N/A No
[...]


# Samples: 46 of event 'llc-miss'
# Total weight : 46
# Sort order : local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked
#
# Overhead Samples Local Weight Memory access Symbol Shared Object Data Symbol Data Object Snoop TLB access Locked
# ........ ............ ............ ........................ .................................. ................. ............................................................ .................. ............ ...................... ......
#
2.17% 1 0 L3 or L3 miss [k] __arch_copy_to_user [kernel.kallsyms] [k] 0xffff0027a65352a0 [unknown] N/A N/A No
2.17% 1 0 L3 or L3 miss [k] __d_lookup_rcu [kernel.kallsyms] [k] 0xffff0027d3cbf468 [unknown] N/A N/A No
2.17% 1 0 L3 or L3 miss [k] __d_lookup_rcu [kernel.kallsyms] [k] 0xffff0027d8f44490 [unknown] N/A N/A No
2.17% 1 0 L3 or L3 miss [k] __tty_buffer_request_room [kernel.kallsyms] [k] 0xffff2027c424ac08 [unknown] N/A N/A No
2.17% 1 0 L3 or L3 miss [.] _dl_addr libc-2.28.so [.] 0x0000ffff9afc94c4 libc-2.28.so N/A N/A No
2.17% 1 0 L3 or L3 miss [.] _dl_addr libc-2.28.so [.] 0x0000ffff9afc98b6 libc-2.28.so N/A N/A No
2.17% 1 0 L3 or L3 miss [.] _dl_lookup_symbol_x ld-2.28.so [.] 0x0000ffff9af38703 libdl-2.28.so N/A N/A No
[...]


# Samples: 6 of event 'llc-access'
# Total weight : 6
# Sort order : local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked
#
# Overhead Samples Local Weight Memory access Symbol Shared Object Data Symbol Data Object Snoop TLB access Locked
# ........ ............ ............ ........................ ....................... ................. ...................... ................ ............ ...................... ......
#
16.67% 1 0 L3 or L3 hit [.] _dl_addr libc-2.28.so [.] 0x0000ffff9afc98b6 libc-2.28.so N/A N/A No
16.67% 1 0 L3 or L3 hit [.] _dl_lookup_symbol_x ld-2.28.so [.] 0x0000ffff9af38703 libdl-2.28.so N/A N/A No
16.67% 1 0 L3 or L3 hit [.] _dl_relocate_object ld-2.28.so [.] 0x0000aaaadc9e4dd0 ls N/A N/A No
16.67% 1 0 L3 or L3 hit [.] _dl_relocate_object ld-2.28.so [.] 0x0000aaaadc9e5970 ls N/A N/A No
16.67% 1 0 L3 or L3 hit [k] copy_page [kernel.kallsyms] [k] 0xffff0027a8528be0 [unknown] N/A N/A No
16.67% 1 0 L3 or L3 hit [k] copy_page [kernel.kallsyms] [k] 0xffff2027c66a65e0 [unknown] N/A N/A No


# Samples: 32 of event 'tlb-miss'
# Total weight : 32
# Sort order : local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked
#
# Overhead Samples Local Weight Memory access Symbol Shared Object Data Symbol Data Object Snoop TLB access Locked
# ........ ............ ............ ........................ .................................. ................. ...................... .................. ............ ...................... ......
#
6.25% 2 0 N/A [k] perf_iterate_ctx.constprop.151 [kernel.kallsyms] [k] 0xffff2027be6488a8 [unknown] N/A Walker miss No
6.25% 2 0 N/A [k] perf_iterate_ctx.constprop.151 [kernel.kallsyms] [k] 0xffff2027c432f8a8 [unknown] N/A Walker miss No
3.12% 1 0 N/A [k] __arch_clear_user [kernel.kallsyms] [k] 0x0000aaaadca14658 [unknown] N/A Walker miss No
3.12% 1 0 N/A [.] _dl_map_object_deps ld-2.28.so [.] 0x0000ffffdd807c50 [stack] N/A Walker miss No
3.12% 1 0 N/A [.] _dl_map_object_from_fd ld-2.28.so [.] 0x0000ffff9af32d50 libpthread-2.28.so N/A Walker miss No
[...]


# Samples: 114 of event 'tlb-access'
# Total weight : 114
# Sort order : local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked
#
# Overhead Samples Local Weight Memory access Symbol Shared Object Data Symbol Data Object Snoop TLB access Locked
# ........ ............ ............ ........................ .................................. ................. ............................................................ ...................... ............ ...................... ......
#
2.63% 3 0 N/A [k] perf_event_mmap [kernel.kallsyms] [k] perf_swevent+0x5c [kernel.kallsyms].data N/A Walker hit No
1.75% 2 0 N/A [k] kmem_cache_alloc [kernel.kallsyms] [k] 0xffff2027af40e3d0 [unknown] N/A Walker hit No
1.75% 2 0 N/A [k] perf_iterate_ctx.constprop.151 [kernel.kallsyms] [k] 0xffff2027aacb08a8 [unknown] N/A Walker hit No
1.75% 2 0 N/A [k] perf_iterate_ctx.constprop.151 [kernel.kallsyms] [k] 0xffff2027be6488a8 [unknown] N/A Walker hit No
1.75% 2 0 N/A [k] perf_iterate_ctx.constprop.151 [kernel.kallsyms] [k] 0xffff2027c432f8a8 [unknown] N/A Walker hit No
0.88% 1 0 N/A [k] __arch_clear_user [kernel.kallsyms] [k] 0x0000aaaadca14658 [unknown] N/A Walker hit No
0.88% 1 0 N/A [k] __arch_clear_user [kernel.kallsyms] [k] 0x0000ffff9b1963f8 [unknown] N/A Walker hit No
[...]


# Samples: 21 of event 'remote-access'
# Total weight : 21
# Sort order : local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked
#
# Overhead Samples Local Weight Memory access Symbol Shared Object Data Symbol Data Object Snoop TLB access Locked
# ........ ............ ............ ........................ .......................... ................. ............................................................ .................. ............ ...................... ......
#
4.76% 1 0 Remote Cache (1 hop) or Any cache hit [k] __arch_copy_to_user [kernel.kallsyms] [k] 0xffff0027a65352a0 [unknown] N/A N/A No
4.76% 1 0 Remote Cache (1 hop) or Any cache hit [k] __d_lookup_rcu [kernel.kallsyms] [k] 0xffff0027d3cbf468 [unknown] N/A N/A No
4.76% 1 0 Remote Cache (1 hop) or Any cache hit [k] __d_lookup_rcu [kernel.kallsyms] [k] 0xffff0027d8f44490 [unknown] N/A N/A No
4.76% 1 0 Remote Cache (1 hop) or Any cache hit [.] _dl_addr libc-2.28.so [.] 0x0000ffff9afc94c4 libc-2.28.so N/A N/A No
[...]


Notes: the networking was not stable at my side and git didn't send
out all patches at last time, so resend this patch set. I did a bit
improvement for patch 01's commit log for this resending patch set.
Sorry for spamming and introducing inconvenience.


Leo Yan (11):
perf mem: Search event name with more flexible path
perf mem: Introduce weak function perf_mem_events__ptr()
perf mem: Support new memory event PERF_MEM_EVENTS__LOAD_STORE
perf mem: Only initialize memory event for recording
perf mem: Support AUX trace
perf mem: Support Arm SPE events
perf arm-spe: Enable attribution PERF_SAMPLE_DATA_SRC
perf arm-spe: Save memory addresses in packet
perf arm-spe: Store operation types in packet
perf arm-spe: Fill address info for memory samples
perf arm-spe: Set sample's data source field

tools/perf/arch/arm64/util/Build | 2 +-
tools/perf/arch/arm64/util/mem-events.c | 46 +++++++
tools/perf/builtin-c2c.c | 18 ++-
tools/perf/builtin-mem.c | 71 ++++++++--
.../util/arm-spe-decoder/arm-spe-decoder.c | 15 +++
.../util/arm-spe-decoder/arm-spe-decoder.h | 8 ++
tools/perf/util/arm-spe.c | 125 +++++++++++++++---
tools/perf/util/mem-events.c | 32 +++--
tools/perf/util/mem-events.h | 3 +-
9 files changed, 266 insertions(+), 54 deletions(-)
create mode 100644 tools/perf/arch/arm64/util/mem-events.c

--
2.17.1

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