diff mbox series

scripts/tracetool: silence SystemTap dtrace(1) long long warnings

Message ID 20201020094043.159935-1-stefanha@redhat.com
State Accepted
Commit 35e28cb0f210cae3d9c98113d519fe5a4bef5866
Headers show
Series scripts/tracetool: silence SystemTap dtrace(1) long long warnings | expand

Commit Message

Stefan Hajnoczi Oct. 20, 2020, 9:40 a.m. UTC
SystemTap's dtrace(1) prints the following warning when it encounters
long long arguments:

  Warning: /usr/bin/dtrace:trace/trace-dtrace-hw_virtio.dtrace:76: syntax error near:
  probe vhost_vdpa_dev_start

  Warning: Proceeding as if --no-pyparsing was given.

Use the uint64_t and int64_t types, respectively. This works with all
host CPU 32- and 64-bit data models (ILP32, LP64, and LLP64) that QEMU
supports.

Reported-by: Markus Armbruster <armbru@redhat.com>
Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 scripts/tracetool/format/d.py | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

Daniel P. Berrangé Oct. 20, 2020, 9:45 a.m. UTC | #1
On Tue, Oct 20, 2020 at 10:40:43AM +0100, Stefan Hajnoczi wrote:
> SystemTap's dtrace(1) prints the following warning when it encounters

> long long arguments:

> 

>   Warning: /usr/bin/dtrace:trace/trace-dtrace-hw_virtio.dtrace:76: syntax error near:

>   probe vhost_vdpa_dev_start

> 

>   Warning: Proceeding as if --no-pyparsing was given.

> 

> Use the uint64_t and int64_t types, respectively. This works with all

> host CPU 32- and 64-bit data models (ILP32, LP64, and LLP64) that QEMU

> supports.

> 

> Reported-by: Markus Armbruster <armbru@redhat.com>

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

> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

> ---

>  scripts/tracetool/format/d.py | 6 ++++++

>  1 file changed, 6 insertions(+)

> 

> diff --git a/scripts/tracetool/format/d.py b/scripts/tracetool/format/d.py

> index 353722f89c..ebfb714200 100644

> --- a/scripts/tracetool/format/d.py

> +++ b/scripts/tracetool/format/d.py

> @@ -57,6 +57,12 @@ def generate(events, backend, group):

>                  # Avoid it by changing probe type to signed char * beforehand.

>                  if type_ == 'int8_t *':

>                      type_ = 'signed char *'

> +

> +            # SystemTap dtrace(1) emits a warning when long long is used

> +            type_ = type_.replace('unsigned long long', 'uint64_t')

> +            type_ = type_.replace('signed long long', 'int64_t')

> +            type_ = type_.replace('long long', 'int64_t')

> +

>              if name in RESERVED_WORDS:

>                  name += '_'

>              args.append(type_ + ' ' + name)


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



Regards,
Daniel
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Philippe Mathieu-Daudé Oct. 20, 2020, 10:06 a.m. UTC | #2
On 10/20/20 11:40 AM, Stefan Hajnoczi wrote:
> SystemTap's dtrace(1) prints the following warning when it encounters

> long long arguments:

> 

>    Warning: /usr/bin/dtrace:trace/trace-dtrace-hw_virtio.dtrace:76: syntax error near:

>    probe vhost_vdpa_dev_start

> 

>    Warning: Proceeding as if --no-pyparsing was given.

> 

> Use the uint64_t and int64_t types, respectively. This works with all

> host CPU 32- and 64-bit data models (ILP32, LP64, and LLP64) that QEMU

> supports.

> 

> Reported-by: Markus Armbruster <armbru@redhat.com>

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

> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

> ---

>   scripts/tracetool/format/d.py | 6 ++++++

>   1 file changed, 6 insertions(+)

> 

> diff --git a/scripts/tracetool/format/d.py b/scripts/tracetool/format/d.py

> index 353722f89c..ebfb714200 100644

> --- a/scripts/tracetool/format/d.py

> +++ b/scripts/tracetool/format/d.py

> @@ -57,6 +57,12 @@ def generate(events, backend, group):

>                   # Avoid it by changing probe type to signed char * beforehand.

>                   if type_ == 'int8_t *':

>                       type_ = 'signed char *'

> +

> +            # SystemTap dtrace(1) emits a warning when long long is used

> +            type_ = type_.replace('unsigned long long', 'uint64_t')

> +            type_ = type_.replace('signed long long', 'int64_t')

> +            type_ = type_.replace('long long', 'int64_t')

> +

>               if name in RESERVED_WORDS:

>                   name += '_'

>               args.append(type_ + ' ' + name)

> 


Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Stefan Hajnoczi Nov. 11, 2020, 1:10 p.m. UTC | #3
On Tue, Oct 20, 2020 at 10:40:43AM +0100, Stefan Hajnoczi wrote:
> SystemTap's dtrace(1) prints the following warning when it encounters

> long long arguments:

> 

>   Warning: /usr/bin/dtrace:trace/trace-dtrace-hw_virtio.dtrace:76: syntax error near:

>   probe vhost_vdpa_dev_start

> 

>   Warning: Proceeding as if --no-pyparsing was given.

> 

> Use the uint64_t and int64_t types, respectively. This works with all

> host CPU 32- and 64-bit data models (ILP32, LP64, and LLP64) that QEMU

> supports.

> 

> Reported-by: Markus Armbruster <armbru@redhat.com>

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

> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

> ---

>  scripts/tracetool/format/d.py | 6 ++++++

>  1 file changed, 6 insertions(+)


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

Stefan
diff mbox series

Patch

diff --git a/scripts/tracetool/format/d.py b/scripts/tracetool/format/d.py
index 353722f89c..ebfb714200 100644
--- a/scripts/tracetool/format/d.py
+++ b/scripts/tracetool/format/d.py
@@ -57,6 +57,12 @@  def generate(events, backend, group):
                 # Avoid it by changing probe type to signed char * beforehand.
                 if type_ == 'int8_t *':
                     type_ = 'signed char *'
+
+            # SystemTap dtrace(1) emits a warning when long long is used
+            type_ = type_.replace('unsigned long long', 'uint64_t')
+            type_ = type_.replace('signed long long', 'int64_t')
+            type_ = type_.replace('long long', 'int64_t')
+
             if name in RESERVED_WORDS:
                 name += '_'
             args.append(type_ + ' ' + name)