[Qemu-devel] [Bug 1391942] [NEW] Unnecessary events option of the trace argument with UST backend

[Francis Deslauriers]

Public bug reported:

When running configure with the --enable-trace-backends=ust option and 
compiling. 
The user should not have to specify a the "events" and "file" options because 
they are not used with that tracing framework.

Right now, in order the use this option the need to specify a dummy
events file.

This fails:
$> qemu-system-x86_64 -hda debian_wheezy_amd64_standard.qcow2 -trace -m 512
qemu-system-x86_64: -trace -m: Invalid parameter '-m'

This works:
$> qemu-system-x86_64 -hda debian_wheezy_amd64_standard.qcow2 -trace 
events=dummy-events.txt -m 512
VNC server running on `127.0.0.1:5900'

I am using version:
$> qemu-system-x86_64 --version
QEMU emulator version 2.1.90, Copyright (c) 2003-2008 Fabrice Bellard

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: lttng trace ust

** Description changed:

- When running configure with the --enable-trace-backends=ust option the
- user should not have to specify a the "events" and "file" options
- because they are not used with that tracing framework.
+ When running configure with the --enable-trace-backends=ust option and 
compiling. 
+ The user should not have to specify a the "events" and "file" options because 
they are not used with that tracing framework.
  
  Right now, in order the use this option the need to specify a dummy
  events file.
  
  This fails:
- $> qemu-system-x86_64 -hda debian_wheezy_amd64_standard.qcow2 -trace -m 512   
            
+ $> qemu-system-x86_64 -hda debian_wheezy_amd64_standard.qcow2 -trace -m 512
  qemu-system-x86_64: -trace -m: Invalid parameter '-m'
  
  This works:
  $> qemu-system-x86_64 -hda debian_wheezy_amd64_standard.qcow2 -trace 
events=dummy-events.txt -m 512
  VNC server running on `127.0.0.1:5900'
  
  I am using version:
- $> qemu-system-x86_64 --version 
+ $> qemu-system-x86_64 --version
  QEMU emulator version 2.1.90, Copyright (c) 2003-2008 Fabrice Bellard

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1391942

Title:
  Unnecessary events option of the trace argument with UST backend

Status in QEMU:
  New

Bug description:
  When running configure with the --enable-trace-backends=ust option and 
compiling. 
  The user should not have to specify a the "events" and "file" options because 
they are not used with that tracing framework.

  Right now, in order the use this option the need to specify a dummy
  events file.

  This fails:
  $> qemu-system-x86_64 -hda debian_wheezy_amd64_standard.qcow2 -trace -m 512
  qemu-system-x86_64: -trace -m: Invalid parameter '-m'

  This works:
  $> qemu-system-x86_64 -hda debian_wheezy_amd64_standard.qcow2 -trace 
events=dummy-events.txt -m 512
  VNC server running on `127.0.0.1:5900'

  I am using version:
  $> qemu-system-x86_64 --version
  QEMU emulator version 2.1.90, Copyright (c) 2003-2008 Fabrice Bellard

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1391942/+subscriptions