gate taskdump to linux only

Author: AhmedSoliman

crates/core/Cargo.toml

@@ -20,7 +20,7 @@ test-util = [
   "restate-types/test-util",
   "tokio/test-util"
 ]
-taskdump = ["tokio/taskdump"]
+taskdump = []
 
 [dependencies]
 restate-workspace-hack = { workspace = true }
@@ -83,3 +83,6 @@ googletest = { workspace = true }
 test-log = { workspace = true }
 tracing-subscriber = { workspace = true }
 tracing-test = { workspace = true }
+
+[target.'cfg(all(target_os = "linux", any(target_arch = "aarch64", target_arch = "x86", target_arch = "x86_64")))'.dependencies]
+tokio = { workspace = true, features = ["taskdump"] }

crates/core/src/task_center.rs

@@ -802,12 +802,20 @@ impl TaskCenterInner {
         }
     }
 
-    #[cfg(not(feature = "taskdump"))]
+    #[cfg(not(all(
+        feature = "taskdump",
+        target_os = "linux",
+        any(target_arch = "aarch64", target_arch = "x86", target_arch = "x86_64")
+    )))]
     async fn dump_tasks(self: &Arc<Self>, _: impl std::io::Write) {
         warn!("Cannot dump tokio tasks; taskdump feature was not enabled at compile time")
     }
 
-    #[cfg(feature = "taskdump")]
+    #[cfg(all(
+        feature = "taskdump",
+        target_os = "linux",
+        any(target_arch = "aarch64", target_arch = "x86", target_arch = "x86_64")
+    ))]
     async fn dump_tasks(self: &Arc<Self>, mut writer: impl std::io::Write) {
         let managed_tasks: HashMap<_, _> = self
             .managed_tasks