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 <[email protected]>
Suggested-by: Daniel P. Berrangé <[email protected]>
Signed-off-by: Stefan Hajnoczi <[email protected]>
---
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 <[email protected]>
