Reduce staking miner reward (companion substrate/pull/9395) (#3465)

* Reduce staking miner reward

* Add EOF

* Fix stuff

* remove import

* Add tyoe

* remove redundant stuff

* update Substrate

Co-authored-by: kianenigma <kian@parity.io>
Co-authored-by: parity-processbot <>

polkadot/runtime/kusama/src/lib.rs

@@ -35,7 +35,7 @@ use runtime_common::{
 	claims, paras_registrar, xcm_sender, slots, auctions, crowdloan,
 	SlowAdjustingFeeUpdate, CurrencyToVote, impls::DealWithFees,
 	BlockHashCount, RocksDbWeight, BlockWeights, BlockLength,
-	OffchainSolutionWeightLimit, OffchainSolutionLengthLimit, elections::fee_for_submit_call,
+	OffchainSolutionWeightLimit, OffchainSolutionLengthLimit,
 	ToAuthor,
 };
 
@@ -66,7 +66,7 @@ use xcm_executor::XcmExecutor;
 use sp_arithmetic::Perquintill;
 use sp_runtime::{
 	create_runtime_str, generic, impl_opaque_keys, ApplyExtrinsicResult, KeyTypeId, Percent,
-	Permill, Perbill, FixedPointNumber,
+	Permill, Perbill,
 	transaction_validity::{TransactionValidity, TransactionSource, TransactionPriority},
 	traits::{
 		BlakeTwo256, Block as BlockT, OpaqueKeys, ConvertInto, AccountIdLookup,
@@ -347,7 +347,6 @@ impl pallet_session::historical::Config for Runtime {
 	type FullIdentificationOf = pallet_staking::ExposureOf<Runtime>;
 }
 
-use pallet_election_provider_multi_phase::WeightInfo;
 parameter_types! {
 	// phase durations. 1/4 of the last session for each.
 	pub const SignedPhase: u32 = EPOCH_DURATION_IN_SLOTS / 4;
@@ -360,15 +359,8 @@ parameter_types! {
 	// This formula is currently adjusted such that a typical solution will spend an amount equal
 	// to the base deposit for every 50 kb.
 	pub const SignedDepositByte: Balance = deposit(1, 0) / (50 * 1024);
-	pub SignedRewardBase: Balance = fee_for_submit_call::<Runtime>(
-		// give 20% threshold.
-		sp_runtime::FixedU128::saturating_from_rational(12, 10),
-		// maximum weight possible.
-		weights::pallet_election_provider_multi_phase::WeightInfo::<Runtime>::submit(SignedMaxSubmissions::get()),
-		// assume a solution of 100kb length.
-		100 * 1024
-	);
-
+	// Each good submission will get 1/10 KSM as reward
+	pub SignedRewardBase: Balance =  UNITS / 10;
 	// fallback: emergency phase.
 	pub const Fallback: pallet_election_provider_multi_phase::FallbackStrategy =
 		pallet_election_provider_multi_phase::FallbackStrategy::Nothing;
@@ -391,6 +383,7 @@ sp_npos_elections::generate_solution_type!(
 impl pallet_election_provider_multi_phase::Config for Runtime {
 	type Event = Event;
 	type Currency = Balances;
+	type EstimateCallFee = TransactionPayment;
 	type UnsignedPhase = UnsignedPhase;
 	type SignedMaxSubmissions = SignedMaxSubmissions;
 	type SignedRewardBase = SignedRewardBase;