perf: add -F +symline support

Author: slicklash

gprofiler/utils/perf.py

@@ -47,6 +47,7 @@
     r"(?:(?P<freq>\d+)\s+)?(?P<event_family>[\w\-_/]+):(?:(?P<event>[\w-]+):)?(?P<suffix>[^\n]*)(?:\n(?P<stack>.*))?",
     re.MULTILINE | re.DOTALL,
 )
+SYMLINE_REGEX = re.compile(r"(?:\+([^+]+):(\d+)){2}$")
 
 
 class SupportedPerfEvent(Enum):
@@ -160,7 +161,8 @@ def collapse_stack(comm: str, stack: str, insert_dso_name: bool = False) -> str:
         m = FRAME_REGEX.match(line)
         assert m is not None, f"bad line: {line}"
         sym, dso = m.group("symbol"), m.group("dso_brackets") or m.group("dso_plain")
-        sym = sym.split("+")[0]  # strip the offset part.
+        if not SYMLINE_REGEX.search(sym):
+            sym = sym.split("+")[0]  # strip the offset part.
         if sym == "[unknown]" and dso != "unknown":
             sym = f"({dso})"
         # append kernel annotation

scripts/perf_build.sh

@@ -17,7 +17,7 @@
 set -euo pipefail
 
 # downloading the zip because the git is very large (this is also very large, but still smaller)
-curl -SL https://codeload.github.com/Granulate/linux/zip/5c103bf97fb268e4ea157f5e1c2a5bd6ad8c40dc -o linux.zip
+curl -SL https://codeload.github.com/Granulate/linux/zip/9909d736d8b8927d79003dfa9732050a08c11221 -o linux.zip
 unzip -qq linux.zip
 rm linux.zip
 cd linux-*/

tests/test_perf.py

@@ -397,6 +397,14 @@ def test_get_average_frame_count(samples: str, count: float) -> None:
             ),
             id="frame_with_space_parenthesis",
         ),
+        pytest.param(
+            "   4af76b main.cpuIntensiveWork+bar.go:21+bar.go:14 (/tmp/perf/my_go_app)",
+            dict(
+                dso_true="main.cpuIntensiveWork+bar.go:21+bar.go:14 (/tmp/perf/my_go_app)",
+                dso_false="main.cpuIntensiveWork+bar.go:21+bar.go:14",
+            ),
+            id="frame_with_symline",
+        ),
     ],
 )
 def test_collapse_stack_consider_dso(stack: str, insert_dso_name: bool, outcome_dict: Dict[str, str]) -> None: