Minor fixes and benchmarking of auto-stake extrinsic.

pallets/subtensor/src/benchmarks.rs

@@ -1588,4 +1588,13 @@ mod pallet_benchmarks {
             Subtensor::<T>::get_commit_reveal_weights_version(),
         );
     }
+
+    #[benchmark]
+    fn set_coldkey_auto_stake_hotkey() {
+        let coldkey: T::AccountId = whitelisted_caller();
+        let hot: T::AccountId = account("A", 0, 1);
+
+        #[extrinsic_call]
+        _(RawOrigin::Signed(coldkey.clone()), hot.clone());
+    }
 }

pallets/subtensor/src/coinbase/run_coinbase.rs

@@ -510,9 +510,9 @@ impl<T: Config> Pallet<T> {
                 );
                 continue;
             }
-            let destination: T::AccountId;
+
             let owner: T::AccountId = Owner::<T>::get(&hotkey);
-            destination = AutoStakeDestination::<T>::get(&owner).unwrap_or(hotkey.clone());
+            let destination = AutoStakeDestination::<T>::get(&owner).unwrap_or(hotkey.clone());
             Self::increase_stake_for_hotkey_and_coldkey_on_subnet(
                 &destination,
                 &owner,

pallets/subtensor/src/macros/dispatches.rs

@@ -2062,16 +2062,17 @@ mod dispatches {
         /// * `hotkey` (T::AccountId):
         ///     - The hotkey account to designate as the autostake destination.
         #[pallet::call_index(114)]
-        #[pallet::weight((Weight::from_parts(64_530_000, 0)
-		.saturating_add(T::DbWeight::get().reads(7_u64))
-		.saturating_add(T::DbWeight::get().writes(2)), DispatchClass::Normal, Pays::Yes))]
+        #[pallet::weight(
+            Weight::from_parts(5_170_000, 0).saturating_add(T::DbWeight::get().writes(1_u64))
+        )]
         pub fn set_coldkey_auto_stake_hotkey(
             origin: T::RuntimeOrigin,
             hotkey: T::AccountId,
         ) -> DispatchResult {
             let coldkey = ensure_signed(origin)?;
-            log::debug!("set_coldkey_auto_stake_hotkey( origin:{coldkey:?} hotkey:{hotkey:?} )");
+
             AutoStakeDestination::<T>::insert(coldkey, hotkey.clone());
+
             Ok(())
         }
     }

pallets/subtensor/src/tests/coinbase.rs

@@ -2770,7 +2770,10 @@ fn test_incentive_is_autostaked_to_owner_destination() {
         Uids::<Test>::insert(netuid, dest_hk, 2);
 
         // Set autostake destination for the miner's coldkey
-        AutoStakeDestination::<Test>::insert(miner_ck, dest_hk);
+        assert_ok!(SubtensorModule::set_coldkey_auto_stake_hotkey(
+            RuntimeOrigin::signed(miner_ck),
+            dest_hk,
+        ));
 
         assert_eq!(
             SubtensorModule::get_stake_for_hotkey_on_subnet(&miner_hk, netuid),