- cost_tracker is data member of a bank, it can report metrics when bank is frozen (#20802)

- removed cost_tracker_stats and histogram
- move stats reporting outside of bank freeze

ledger-tool/src/main.rs

@@ -31,7 +31,6 @@ use solana_runtime::{
     bank_forks::BankForks,
     cost_model::CostModel,
     cost_tracker::CostTracker,
-    cost_tracker_stats::CostTrackerStats,
     hardened_unpack::{open_genesis_config, MAX_GENESIS_ARCHIVE_UNPACKED_SIZE},
     snapshot_archive_info::SnapshotArchiveInfoGetter,
     snapshot_config::SnapshotConfig,
@@ -773,7 +772,6 @@ fn compute_slot_cost(blockstore: &Blockstore, slot: Slot) -> Result<(), String>
     let mut cost_model = CostModel::default();
     cost_model.initialize_cost_table(&blockstore.read_program_costs().unwrap());
     let mut cost_tracker = CostTracker::default();
-    let mut cost_tracker_stats = CostTrackerStats::default();
 
     for entry in entries {
         num_transactions += entry.transactions.len();
@@ -796,15 +794,11 @@ fn compute_slot_cost(blockstore: &Blockstore, slot: Slot) -> Result<(), String>
                     &transaction,
                     true, // demote_program_write_locks
                 );
-                if cost_tracker
-                    .try_add(&transaction, &tx_cost, &mut cost_tracker_stats)
-                    .is_err()
-                {
+                let result = cost_tracker.try_add(&transaction, &tx_cost);
+                if result.is_err() {
                     println!(
-                        "Slot: {}, CostModel rejected transaction {:?}, stats {:?}!",
-                        slot,
-                        transaction,
-                        cost_tracker.get_stats()
+                        "Slot: {}, CostModel rejected transaction {:?}, reason {:?}",
+                        slot, transaction, result,
                     );
                 }
                 for (program_id, _instruction) in transaction.message().program_instructions_iter()
@@ -815,12 +809,8 @@ fn compute_slot_cost(blockstore: &Blockstore, slot: Slot) -> Result<(), String>
     }
 
     println!(
-        "Slot: {}, Entries: {}, Transactions: {}, Programs {}, {:?}",
-        slot,
-        num_entries,
-        num_transactions,
-        num_programs,
-        cost_tracker.get_stats()
+        "Slot: {}, Entries: {}, Transactions: {}, Programs {}",
+        slot, num_entries, num_transactions, num_programs,
     );
     println!("  Programs: {:?}", program_ids);