[Bug 1844814] [NEW] trace: SystemTap documentation out of date

* [Bug 1844814] [NEW] trace: SystemTap documentation out of date
@ 2019-09-20 15:36 Philippe Mathieu-Daudé
  2019-11-08 13:59 ` [Bug 1844814] " Philippe Mathieu-Daudé
  2019-12-16 12:18 ` Philippe Mathieu-Daudé
  0 siblings, 2 replies; 3+ messages in thread
From: Philippe Mathieu-Daudé @ 2019-09-20 15:36 UTC (permalink / raw)
  To: qemu-devel

Public bug reported:

The docs/devel/tracing.txt help suggest:

    scripts/tracetool.py --backends=dtrace --format=stap \
                         --binary path/to/qemu-binary \
                         --target-type system \
                         --target-name x86_64 \
                         <trace-events-all >qemu.stp

but since commit 2098c56a9bc this comment is outdated:

  $ scripts/tracetool.py --backends=dtrace --format=stap \
    --binary mips-softmmu/qemu-system-mips \
    --target-type system \
    --target-name mips trace-events-all
  Error: group name is required

The offending commit seems:

commit 2098c56a9bc5901e145fa5d4759f075808811685
Author: Daniel P. Berrange <berrange@redhat.com>
Date:   Wed Jan 25 16:14:14 2017 +0000

    trace: move setting of group name into Makefiles

** Affects: qemu
     Importance: Undecided
         Status: New

** Tags: trace

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https://bugs.launchpad.net/bugs/1844814

Title:
  trace: SystemTap documentation out of date

Status in QEMU:
  New

Bug description:
  The docs/devel/tracing.txt help suggest:

      scripts/tracetool.py --backends=dtrace --format=stap \
                           --binary path/to/qemu-binary \
                           --target-type system \
                           --target-name x86_64 \
                           <trace-events-all >qemu.stp

  but since commit 2098c56a9bc this comment is outdated:

    $ scripts/tracetool.py --backends=dtrace --format=stap \
      --binary mips-softmmu/qemu-system-mips \
      --target-type system \
      --target-name mips trace-events-all
    Error: group name is required

  The offending commit seems:

  commit 2098c56a9bc5901e145fa5d4759f075808811685
  Author: Daniel P. Berrange <berrange@redhat.com>
  Date:   Wed Jan 25 16:14:14 2017 +0000

      trace: move setting of group name into Makefiles

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