model/profile: add location information

.chloggen/profiles-location-folded.yaml

@@ -0,0 +1,22 @@
+# Use this changelog template to create an entry for release notes.
+#
+# If your change doesn't affect end users you should instead start
+# your pull request title with [chore] or use the "Skip Changelog" label.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the area of concern in the attributes-registry, (e.g. http, cloud, db)
+component: profile
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: add pprof specific attribute for location.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+# The values here must be integers.
+issues: []
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:

docs/registry/attributes/profile.md

@@ -39,10 +39,19 @@ Attributes specific to pprof that helps to convert Profiling signals.
 
 | Attribute | Type | Description | Examples | Stability |
 |---|---|---|---|---|
+| <a id="profile-pprof-location" href="#profile-pprof-location">`profile.pprof.location`</a> | string | Describes the relation between symbols and a location. | `is_folded` | ![Development](https://img.shields.io/badge/-development-blue) |
 | <a id="profile-pprof-mapping" href="#profile-pprof-mapping">`profile.pprof.mapping`</a> | string | Describes the resolution of symbolic information. | `has_filenames` | ![Development](https://img.shields.io/badge/-development-blue) |
 
 ---
 
+`profile.pprof.location` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
+
+| Value  | Description | Stability |
+|---|---|---|
+| `is_folded` | Provides an indication that multiple symbols map to this location's address, for example due to identical code folding by the linker. In that case the line information represents one of the multiple symbols. This field must be recomputed when the symbolization state of the profile changes. | ![Development](https://img.shields.io/badge/-development-blue) |
+
+---
+
 `profile.pprof.mapping` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
 
 | Value  | Description | Stability |

model/profile/common.yaml

@@ -14,3 +14,5 @@ groups:
     attributes:
       - ref: profile.pprof.mapping
         requirement_level: recommended
+      - ref: profile.pprof.location
+        requirement_level: recommended

model/profile/registry.yaml

@@ -111,3 +111,19 @@ groups:
                 Indicates that there are inlined frames related to this mapping.
               value: "has_inline_frames"
               stability: development
+      - id: profile.pprof.location
+        stability: development
+        brief: >
+          Describes the relation between symbols and a location.
+        examples: ['is_folded']
+        type:
+          members:
+            - id: is_folded
+              brief: >
+                Provides an indication that multiple symbols map to this location's
+                address, for example due to identical code folding by the linker. In
+                that case the line information represents one of the multiple symbols.
+                This field must be recomputed when the symbolization state of the
+                profile changes.
+              value: "is_folded"
+              stability: development