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* [PATCH v1 0/5] perf kvm: Add stat support on arm64
@ 2019-06-12  9:08 Zenghui Yu
  2019-06-12  9:08 ` [PATCH v1 1/5] KVM: arm/arm64: Remove kvm_mmio_emulate tracepoint Zenghui Yu
                   ` (4 more replies)
  0 siblings, 5 replies; 12+ messages in thread
From: Zenghui Yu @ 2019-06-12  9:08 UTC (permalink / raw)
  To: linux-arm-kernel, kvmarm, kvm, linux-kernel, linux-perf-users
  Cc: christoffer.dall, marc.zyngier, acme, peterz, mingo,
	ganapatrao.kulkarni, catalin.marinas, will.deacon, mark.rutland,
	acme, alexander.shishkin, jolsa, namhyung, wanghaibin.wang,
	xiexiangyou, linuxarm, Zenghui Yu

'perf kvm stat report/record' generates a statistical analysis of KVM
events and can be used to analyze guest exit reasons. This series tries
to add stat support on arm64 (Port perf-kvm-stat to arm64 - this is
already supported on x86).

"record" enables recording of two pair of tracepoints:
 - "kvm:kvm_entry" and "kvm:kvm_exit"
 - "kvm:kvm_trap_enter" and "kvm:kvm_trap_exit"
"report" reports statistical analysis of guest exit&trap events.

To record kvm events on the host:
 # perf kvm stat record -a

To report kvm VM EXIT events:
 # perf kvm stat report --event=vmexit

To report kvm VM TRAP (synchronous exceptions) events:
 # perf kvm stat report --event=trap

More information can be found at tools/perf/Documentation/perf-kvm.txt.

* Patch 1-2 touch KVM/ARM side, with #1 is cleanup and #2 is preparation
  for perf-kvm-stat support.
* Patch 3-5 touch perf side.
* Patch 3 adds support for get_cpuid() function on arm64. *RFC!*
* Patch 4 adds support for perf-kvm-stat on arm64, with VM-EXIT events.
* Patch 5 adds support to report TRAP-EVENT events.

Any suggestions, comments and test results will be appreciated.

Thanks,
zenghui

---

Zenghui Yu (5):
  KVM: arm/arm64: Remove kvm_mmio_emulate tracepoint
  KVM: arm/arm64: Adjust entry/exit and trap related tracepoints
  perf tools arm64: Add support for get_cpuid() function
  perf,kvm/arm64: Add stat support on arm64
  perf,kvm/arm64: perf-kvm-stat to report VM TRAP

 arch/arm64/kvm/handle_exit.c                     |   3 +
 arch/arm64/kvm/trace.h                           |  35 +++++++
 tools/perf/arch/arm64/Makefile                   |   2 +
 tools/perf/arch/arm64/util/Build                 |   1 +
 tools/perf/arch/arm64/util/aarch64_guest_exits.h |  91 +++++++++++++++++
 tools/perf/arch/arm64/util/header.c              |  74 +++++++++-----
 tools/perf/arch/arm64/util/kvm-stat.c            | 125 +++++++++++++++++++++++
 virt/kvm/arm/arm.c                               |   4 +-
 virt/kvm/arm/trace.h                             |  42 ++------
 9 files changed, 317 insertions(+), 60 deletions(-)
 create mode 100644 tools/perf/arch/arm64/util/aarch64_guest_exits.h
 create mode 100644 tools/perf/arch/arm64/util/kvm-stat.c

-- 
1.8.3.1



^ permalink raw reply	[flat|nested] 12+ messages in thread

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Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-06-12  9:08 [PATCH v1 0/5] perf kvm: Add stat support on arm64 Zenghui Yu
2019-06-12  9:08 ` [PATCH v1 1/5] KVM: arm/arm64: Remove kvm_mmio_emulate tracepoint Zenghui Yu
2019-06-12 12:48   ` James Morse
2019-06-13 11:20     ` Zenghui Yu
2019-06-12  9:08 ` [PATCH v1 2/5] KVM: arm/arm64: Adjust entry/exit and trap related tracepoints Zenghui Yu
2019-06-12 12:49   ` James Morse
2019-06-13 11:28     ` Zenghui Yu
2019-06-17 11:19       ` James Morse
2019-06-21 13:25         ` Zenghui Yu
2019-06-12  9:08 ` [PATCH v1 3/5] perf tools arm64: Add support for get_cpuid() function Zenghui Yu
2019-06-12  9:08 ` [PATCH v1 4/5] perf,kvm/arm64: Add stat support on arm64 Zenghui Yu
2019-06-12  9:08 ` [PATCH v1 5/5] perf,kvm/arm64: perf-kvm-stat to report VM TRAP Zenghui Yu

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