companion for substrate/10377 (#4379)

* companion for substrate/10377

* udpate substrate (cargo update -p sp-io)

* fmt

polkadot/runtime/common/src/lib.rs

@@ -41,7 +41,7 @@ pub use frame_support::weights::constants::{
 };
 use frame_support::{
 	parameter_types,
-	traits::{Currency, OneSessionHandler},
+	traits::{ConstU32, Currency, OneSessionHandler},
 	weights::{constants::WEIGHT_PER_SECOND, DispatchClass, Weight},
 };
 use frame_system::limits;
@@ -182,6 +182,13 @@ impl<T: pallet_session::Config> OneSessionHandler<T::AccountId>
 	fn on_disabled(_: u32) {}
 }
 
+/// A reasonable benchmarking config for staking pallet.
+pub struct StakingBenchmarkingConfig;
+impl pallet_staking::BenchmarkingConfig for StakingBenchmarkingConfig {
+	type MaxValidators = ConstU32<1000>;
+	type MaxNominators = ConstU32<1000>;
+}
+
 #[cfg(test)]
 mod multiplier_tests {
 	use super::*;

polkadot/runtime/kusama/src/lib.rs

@@ -555,6 +555,7 @@ impl pallet_staking::Config for Runtime {
 	type OffendingValidatorsThreshold = OffendingValidatorsThreshold;
 	// Use the nominators map to iter voters, but also keep bags-list up-to-date.
 	type SortedListProvider = BagsList;
+	type BenchmarkingConfig = runtime_common::StakingBenchmarkingConfig;
 	type WeightInfo = weights::pallet_staking::WeightInfo<Runtime>;
 }
 

polkadot/runtime/polkadot/src/lib.rs

@@ -550,6 +550,7 @@ impl pallet_staking::Config for Runtime {
 	type GenesisElectionProvider = runtime_common::elections::GenesisElectionOf<Self>;
 	// Use the nominators map to iter voters, but also keep bags-list up-to-date.
 	type SortedListProvider = runtime_common::elections::UseNominatorsAndUpdateBagsList<Runtime>;
+	type BenchmarkingConfig = runtime_common::StakingBenchmarkingConfig;
 	type WeightInfo = weights::pallet_staking::WeightInfo<Runtime>;
 }
 

polkadot/runtime/test-runtime/src/lib.rs

@@ -345,6 +345,7 @@ impl pallet_staking::Config for Runtime {
 	// Use the nominator map to iter voter AND no-ops for all SortedListProvider hooks. The migration
 	// to bags-list is a no-op, but the storage version will be updated.
 	type SortedListProvider = pallet_staking::UseNominatorsMap<Runtime>;
+	type BenchmarkingConfig = runtime_common::StakingBenchmarkingConfig;
 	type WeightInfo = ();
 }
 

polkadot/runtime/westend/src/lib.rs

@@ -459,6 +459,7 @@ impl pallet_staking::Config for Runtime {
 	type GenesisElectionProvider = runtime_common::elections::GenesisElectionOf<Self>;
 	// Use the nominators map to iter voters, but also keep bags-list up-to-date.
 	type SortedListProvider = BagsList;
+	type BenchmarkingConfig = runtime_common::StakingBenchmarkingConfig;
 	type WeightInfo = weights::pallet_staking::WeightInfo<Runtime>;
 }