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Date:   Fri, 5 Aug 2022 11:14:44 -0400
From:   Steven Rostedt <rostedt@goodmis.org>
To:     Linus Torvalds <torvalds@linux-foundation.org>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Ingo Molnar <mingo@kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Daniel Bristot de Oliveira <bristot@kernel.org>,
        Douglas Anderson <dianders@chromium.org>,
        Li kunyu <kunyu@nfschina.com>, Li zeming <zeming@nfschina.com>,
        Linyu Yuan <quic_linyyuan@quicinc.com>,
        "Masami Hiramatsu (Google)" <mhiramat@kernel.org>,
        Slark Xiao <slark_xiao@163.com>,
        Tiezhu Yang <yangtiezhu@loongson.cn>,
        Xiang wangx <wangxiang@cdjrlc.com>,
        Zheng Yejian <zhengyejian1@huawei.com>,
        Zhiqiang Liu <liuzhiqiang26@huawei.com>,
        sunliming <sunliming@kylinos.cn>,
        Dan Carpenter <dan.carpenter@oracle.com>
Subject: [GIT PULL v2.5] tracing: Updates for 5.20 / 6.0
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[ This time trimming the diff from the email ]

Linus,

Tracing updates for 5.20 / 6.0

- Runtime verification infrastructure
  This is the biggest change for this pull request. It introduces the
  runtime verification that is necessary for running Linux on safety
  critical systems. It allows for deterministic automata models to be
  inserted into the kernel that will attach to tracepoints, where the
  information on these tracepoints will move the model from state to state.
  If a state is encountered that does not belong to the model, it will then
  activate a given reactor, that could just inform the user or even panic
  the kernel (for which safety critical systems will detect and can recover
  from).

- Two monitor models are also added: Wakeup In Preemptive (WIP - not to be
  confused with "work in progress"), and Wakeup While Not Running (WWNR).

- Added __vstring() helper to the TRACE_EVENT() macro to replace several
  vsnprintf() usages that were all doing it wrong.

- eprobes now can have their event autogenerated when the event name is left
  off.

- The rest is various cleanups and fixes.


Please pull the latest trace-v6.0 tree, which can be found at:


  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
trace-v6.0

Tag SHA1: b5e67427372a18ccdde74202fcc3628027fec0de
Head SHA1: f1a15b977ff864513133ecb611eb28603d32c1b4


Dan Carpenter (1):
      rv: Unlock on error path in rv_unregister_reactor()

Daniel Bristot de Oliveira (16):
      rv: Add Runtime Verification (RV) interface
      rv: Add runtime reactors interface
      rv/include: Add helper functions for deterministic automata
      rv/include: Add deterministic automata monitor definition via C macros
      rv/include: Add instrumentation helper functions
      Documentation/rv: Add a basic documentation
      tools/rv: Add dot2c
      Documentation/rv: Add deterministic automaton documentation
      tools/rv: Add dot2k
      Documentation/rv: Add deterministic automata monitor synthesis documentation
      Documentation/rv: Add deterministic automata instrumentation documentation
      rv/monitor: Add the wip monitor skeleton created by dot2k
      rv/monitor: Add the wip monitor
      rv/monitor: Add the wwnr monitor
      rv/reactor: Add the printk reactor
      rv/reactor: Add the panic reactor

Douglas Anderson (1):
      tracing: Fix sleeping while atomic in kdb ftdump

Li kunyu (1):
      blk-iocost: tracing: atomic64_read(&ioc->vtime_rate) is assigned an extra semicolon

Li zeming (1):
      tracepoints: It is CONFIG_TRACEPOINTS not CONFIG_TRACEPOINT

Linyu Yuan (4):
      tracing: eprobe: Add missing log index
      tracing: eprobe: Remove duplicate is_good_name() operation
      tracing: Auto generate event name when creating a group of events
      selftests/ftrace: Add test case for GRP/ only input

Masami Hiramatsu (Google) (2):
      selftests/kprobe: Update test for no event name syntax error
      tracing/eprobe: Show syntax error logs in error_log file

Slark Xiao (1):
      scripts/tracing: Fix typo 'the the' in comment

Steven Rostedt (Google) (23):
      ftrace: Be more specific about arch impact when function tracer is enabled
      tracing: devlink: Use static array for string in devlink_trap_report event
      tracing/ipv4/ipv6: Use static array for name field in fib*_lookup_table event
      neighbor: tracing: Have neigh_create event use __string()
      tracing/events: Add __vstring() and __assign_vstr() helper macros
      tracing/IB/hfi1: Use the new __vstring() helper
      tracing/ath: Use the new __vstring() helper
      tracing/brcm: Use the new __vstring() helper
      tracing/iwlwifi: Use the new __vstring() helper
      usb: chipidea: tracing: Use the new __vstring() helper
      xhci: tracing: Use the new __vstring() helper
      usb: musb: tracing: Use the new __vstring() helper
      scsi: iscsi: tracing: Use the new __vstring() helper
      scsi: qla2xxx: tracing: Use the new __vstring() helper
      mac80211: tracing: Use the new __vstring() helper
      selftests/kprobe: Do not test for GRP/ without event failures
      tracing: Add example and documentation for new __vstring() macro
      USB: mtu3: tracing: Use the new __vstring() helper
      batman-adv: tracing: Use the new __vstring() helper
      tracing: Use a copy of the va_list for __assign_vstr()
      ftrace/x86: Add back ftrace_expected assignment
      tracing: Use a struct alignof to determine trace event field alignment
      tracing: Use alignof__(struct {type b;}) instead of offsetof()

Tiezhu Yang (1):
      samples: Use KSYM_NAME_LEN for kprobes

Xiang wangx (1):
      tracing/user_events: Fix syntax errors in comments

Zheng Yejian (2):
      tracing/histograms: Fix memory leak problem
      tracing/histograms: Simplify create_hist_fields()

Zhiqiang Liu (1):
      tracing: Use free_trace_buffer() in allocate_trace_buffers()

sunliming (1):
      fprobe/samples: Make sample_probe static

----
 Documentation/trace/index.rst                      |   1 +
 Documentation/trace/kprobetrace.rst                |   8 +-
 .../trace/rv/da_monitor_instrumentation.rst        | 171 +++++
 Documentation/trace/rv/da_monitor_synthesis.rst    | 147 ++++
 Documentation/trace/rv/deterministic_automata.rst  | 184 +++++
 Documentation/trace/rv/index.rst                   |  14 +
 Documentation/trace/rv/monitor_wip.rst             |  55 ++
 Documentation/trace/rv/monitor_wwnr.rst            |  45 ++
 Documentation/trace/rv/runtime-verification.rst    | 231 ++++++
 Documentation/trace/uprobetracer.rst               |   8 +-
 arch/x86/kernel/ftrace.c                           |   1 +
 drivers/infiniband/hw/hfi1/trace_dbg.h             |   8 +-
 drivers/net/wireless/ath/ath10k/trace.h            |  14 +-
 drivers/net/wireless/ath/ath11k/trace.h            |   7 +-
 drivers/net/wireless/ath/ath6kl/trace.h            |  14 +-
 drivers/net/wireless/ath/trace.h                   |   7 +-
 drivers/net/wireless/ath/wil6210/trace.h           |   7 +-
 .../broadcom/brcm80211/brcmfmac/tracepoint.h       |  12 +-
 .../brcm80211/brcmsmac/brcms_trace_brcmsmac_msg.h  |  12 +-
 .../net/wireless/intel/iwlwifi/iwl-devtrace-msg.h  |  12 +-
 drivers/usb/chipidea/trace.h                       |   4 +-
 drivers/usb/host/xhci-trace.h                      |   4 +-
 drivers/usb/mtu3/mtu3_trace.h                      |   6 +-
 drivers/usb/musb/musb_trace.h                      |   4 +-
 include/linux/rv.h                                 |  70 ++
 include/linux/sched.h                              |  11 +
 include/linux/trace_events.h                       |  18 +
 include/linux/tracepoint.h                         |   2 +-
 include/rv/automata.h                              |  75 ++
 include/rv/da_monitor.h                            | 544 ++++++++++++++
 include/rv/instrumentation.h                       |  29 +
 include/trace/events/devlink.h                     |   7 +-
 include/trace/events/fib.h                         |   6 +-
 include/trace/events/fib6.h                        |   8 +-
 include/trace/events/iocost.h                      |   2 +-
 include/trace/events/iscsi.h                       |   4 +-
 include/trace/events/neigh.h                       |   2 +-
 include/trace/events/qla.h                         |   4 +-
 include/trace/events/rv.h                          | 142 ++++
 include/trace/stages/stage1_struct_define.h        |   3 +
 include/trace/stages/stage2_data_offsets.h         |   3 +
 include/trace/stages/stage4_event_fields.h         |  11 +-
 include/trace/stages/stage5_get_offsets.h          |   4 +
 include/trace/stages/stage6_event_callback.h       |  12 +
 kernel/fork.c                                      |  14 +
 kernel/trace/Kconfig                               |   5 +-
 kernel/trace/Makefile                              |   1 +
 kernel/trace/rv/Kconfig                            |  78 ++
 kernel/trace/rv/Makefile                           |   8 +
 kernel/trace/rv/monitors/wip/wip.c                 |  88 +++
 kernel/trace/rv/monitors/wip/wip.h                 |  46 ++
 kernel/trace/rv/monitors/wwnr/wwnr.c               |  87 +++
 kernel/trace/rv/monitors/wwnr/wwnr.h               |  46 ++
 kernel/trace/rv/reactor_panic.c                    |  43 ++
 kernel/trace/rv/reactor_printk.c                   |  42 ++
 kernel/trace/rv/rv.c                               | 799 +++++++++++++++++++++
 kernel/trace/rv/rv.h                               |  68 ++
 kernel/trace/rv/rv_reactors.c                      | 510 +++++++++++++
 kernel/trace/trace.c                               |  46 +-
 kernel/trace/trace.h                               |   9 +
 kernel/trace/trace_dynevent.c                      |   2 +-
 kernel/trace/trace_eprobe.c                        |  37 +-
 kernel/trace/trace_events_hist.c                   |   7 +-
 kernel/trace/trace_events_user.c                   |   2 +-
 kernel/trace/trace_kprobe.c                        |  16 +-
 kernel/trace/trace_probe.c                         |   4 +
 kernel/trace/trace_probe.h                         |   5 +-
 kernel/trace/trace_uprobe.c                        |  12 +-
 net/batman-adv/trace.h                             |   9 +-
 net/mac80211/trace_msg.h                           |   6 +-
 samples/fprobe/fprobe_example.c                    |   2 +-
 samples/kprobes/kprobe_example.c                   |   5 +-
 samples/kprobes/kretprobe_example.c                |   5 +-
 samples/trace_events/trace-events-sample.c         |  14 +-
 samples/trace_events/trace-events-sample.h         |  32 +-
 scripts/tracing/draw_functrace.py                  |   2 +-
 .../ftrace/test.d/dynevent/add_remove_eprobe.tc    |   9 +-
 .../ftrace/test.d/dynevent/add_remove_kprobe.tc    |   7 +
 .../ftrace/test.d/kprobe/kprobe_syntax_errors.tc   |   2 +-
 tools/verification/dot2/Makefile                   |  26 +
 tools/verification/dot2/automata.py                | 174 +++++
 tools/verification/dot2/dot2c                      |  26 +
 tools/verification/dot2/dot2c.py                   | 254 +++++++
 tools/verification/dot2/dot2k                      |  47 ++
 tools/verification/dot2/dot2k.py                   | 177 +++++
 .../dot2/dot2k_templates/main_global.c             |  91 +++
 .../dot2/dot2k_templates/main_per_cpu.c            |  91 +++
 .../dot2/dot2k_templates/main_per_task.c           |  91 +++
 tools/verification/models/wip.dot                  |  16 +
 tools/verification/models/wwnr.dot                 |  16 +
 90 files changed, 4824 insertions(+), 186 deletions(-)
 create mode 100644 Documentation/trace/rv/da_monitor_instrumentation.rst
 create mode 100644 Documentation/trace/rv/da_monitor_synthesis.rst
 create mode 100644 Documentation/trace/rv/deterministic_automata.rst
 create mode 100644 Documentation/trace/rv/index.rst
 create mode 100644 Documentation/trace/rv/monitor_wip.rst
 create mode 100644 Documentation/trace/rv/monitor_wwnr.rst
 create mode 100644 Documentation/trace/rv/runtime-verification.rst
 create mode 100644 include/linux/rv.h
 create mode 100644 include/rv/automata.h
 create mode 100644 include/rv/da_monitor.h
 create mode 100644 include/rv/instrumentation.h
 create mode 100644 include/trace/events/rv.h
 create mode 100644 kernel/trace/rv/Kconfig
 create mode 100644 kernel/trace/rv/Makefile
 create mode 100644 kernel/trace/rv/monitors/wip/wip.c
 create mode 100644 kernel/trace/rv/monitors/wip/wip.h
 create mode 100644 kernel/trace/rv/monitors/wwnr/wwnr.c
 create mode 100644 kernel/trace/rv/monitors/wwnr/wwnr.h
 create mode 100644 kernel/trace/rv/reactor_panic.c
 create mode 100644 kernel/trace/rv/reactor_printk.c
 create mode 100644 kernel/trace/rv/rv.c
 create mode 100644 kernel/trace/rv/rv.h
 create mode 100644 kernel/trace/rv/rv_reactors.c
 create mode 100644 tools/verification/dot2/Makefile
 create mode 100644 tools/verification/dot2/automata.py
 create mode 100644 tools/verification/dot2/dot2c
 create mode 100644 tools/verification/dot2/dot2c.py
 create mode 100644 tools/verification/dot2/dot2k
 create mode 100644 tools/verification/dot2/dot2k.py
 create mode 100644 tools/verification/dot2/dot2k_templates/main_global.c
 create mode 100644 tools/verification/dot2/dot2k_templates/main_per_cpu.c
 create mode 100644 tools/verification/dot2/dot2k_templates/main_per_task.c
 create mode 100644 tools/verification/models/wip.dot
 create mode 100644 tools/verification/models/wwnr.dot
---------------------------