[Kernel] correct cpu worker function parameter type (#19745)

Signed-off-by: Andy Xie <andy.xning@gmail.com>

vllm/attention/ops/ipex_attn.py

@@ -29,7 +29,7 @@ class _PagedAttention:
         head_size: int,
         *args,
     ) -> Tuple[int, ...]:
-        return (2, num_blocks, block_size * num_kv_heads * head_size)
+        return 2, num_blocks, block_size * num_kv_heads * head_size
 
     @staticmethod
     def split_kv_cache(

vllm/worker/cpu_worker.py

@@ -3,7 +3,7 @@
 """A CPU worker class."""
 import os
 from importlib import util
-from typing import Dict, List, Optional, Set, Tuple, Type
+from typing import List, Optional, Set, Tuple, Type
 
 import torch
 import torch.distributed
@@ -88,13 +88,13 @@ class CPUCacheEngine:
                 torch.empty(kv_cache_shape, dtype=self.dtype, device="cpu"))
         return kv_cache
 
-    def swap_in(self, src_to_dst: Dict[int, int]) -> None:
+    def swap_in(self, src_to_dst: torch.Tensor) -> None:
         raise NotImplementedError("Swap is not supported in CPUCacheEngine.")
 
-    def swap_out(self, src_to_dst: Dict[int, int]) -> None:
+    def swap_out(self, src_to_dst: torch.Tensor) -> None:
         raise NotImplementedError("Swap is not supported in CPUCacheEngine.")
 
-    def copy(self, src_to_dsts: Dict[int, List[int]]) -> None:
+    def copy(self, src_to_dsts: torch.Tensor) -> None:
         self.attn_backend.copy_blocks(self.cpu_cache, src_to_dsts)
 
     @staticmethod