[PATCH] trace: add --group=all to tracing.txt

[PATCH] trace: add --group=all to tracing.txt

[Stefan Hajnoczi]

tracetool needs to know the group name ("all", "root", or a specific
subdirectory).  Also remove the stdin redirection because tracetool.py
needs the path to the trace-events file.  Update the documentation.

Fixes: 2098c56a9bc5901e145fa5d4759f075808811685
       ("trace: move setting of group name into Makefiles")
Launchpad: https://bugs.launchpad.net/bugs/1844814
Reported-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Cc: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 docs/devel/tracing.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/docs/devel/tracing.txt b/docs/devel/tracing.txt
index 8231bbf5d1..8c0376fefa 100644
--- a/docs/devel/tracing.txt
+++ b/docs/devel/tracing.txt
@@ -317,7 +317,8 @@ probes:
                          --binary path/to/qemu-binary \
                          --target-type system \
                          --target-name x86_64 \
-                         <trace-events-all >qemu.stp
+                         --group=all \
+                         trace-events-all >qemu.stp
 
 To facilitate simple usage of systemtap where there merely needs to be printf
 logging of certain probes, a helper script "qemu-trace-stap" is provided.
-- 
2.21.0

Re: [PATCH] trace: add --group=all to tracing.txt

[Daniel P. Berrangé]

On Wed, Oct 09, 2019 at 02:51:54PM +0100, Stefan Hajnoczi wrote:
> tracetool needs to know the group name ("all", "root", or a specific
> subdirectory).  Also remove the stdin redirection because tracetool.py
> needs the path to the trace-events file.  Update the documentation.
> 
> Fixes: 2098c56a9bc5901e145fa5d4759f075808811685
>        ("trace: move setting of group name into Makefiles")
> Launchpad: https://bugs.launchpad.net/bugs/1844814
> Reported-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Cc: Daniel P. Berrange <berrange@redhat.com>
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
> ---
>  docs/devel/tracing.txt | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

Regards,
Daniel
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Re: [PATCH] trace: add --group=all to tracing.txt

[Philippe Mathieu-Daudé]

On 10/9/19 3:51 PM, Stefan Hajnoczi wrote:
> tracetool needs to know the group name ("all", "root", or a specific
> subdirectory).  Also remove the stdin redirection because tracetool.py
> needs the path to the trace-events file.  Update the documentation.

Thanks!

> 
> Fixes: 2098c56a9bc5901e145fa5d4759f075808811685
>         ("trace: move setting of group name into Makefiles")
> Launchpad: https://bugs.launchpad.net/bugs/1844814
> Reported-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Cc: Daniel P. Berrange <berrange@redhat.com>
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
> ---
>   docs/devel/tracing.txt | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/docs/devel/tracing.txt b/docs/devel/tracing.txt
> index 8231bbf5d1..8c0376fefa 100644
> --- a/docs/devel/tracing.txt
> +++ b/docs/devel/tracing.txt
> @@ -317,7 +317,8 @@ probes:
>                            --binary path/to/qemu-binary \
>                            --target-type system \
>                            --target-name x86_64 \
> -                         <trace-events-all >qemu.stp
> +                         --group=all \
> +                         trace-events-all >qemu.stp
>   
>   To facilitate simple usage of systemtap where there merely needs to be printf
>   logging of certain probes, a helper script "qemu-trace-stap" is provided.
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH] trace: add --group=all to tracing.txt

[Stefan Hajnoczi]

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On Wed, Oct 09, 2019 at 02:51:54PM +0100, Stefan Hajnoczi wrote:
> tracetool needs to know the group name ("all", "root", or a specific
> subdirectory).  Also remove the stdin redirection because tracetool.py
> needs the path to the trace-events file.  Update the documentation.
> 
> Fixes: 2098c56a9bc5901e145fa5d4759f075808811685
>        ("trace: move setting of group name into Makefiles")
> Launchpad: https://bugs.launchpad.net/bugs/1844814
> Reported-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Cc: Daniel P. Berrange <berrange@redhat.com>
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
> ---
>  docs/devel/tracing.txt | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Thanks, applied to my tracing tree:
https://github.com/stefanha/qemu/commits/tracing

Stefan

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