[Misc] parametrize 'dtype' in test_flash_mla (#22641)

Signed-off-by: RUTHLESS-BOT <wujiafeng@cmbchina.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

tests/kernels/attention/test_flashmla.py

@@ -35,11 +35,10 @@ FLASH_MLA_UNSUPPORTED_REASON = is_flashmla_supported()[1] \
 @pytest.mark.parametrize("block_size", [64])
 @pytest.mark.parametrize("causal", [True])
 @pytest.mark.parametrize("varlen", [False, True])
+@pytest.mark.parametrize("dtype", [torch.bfloat16, torch.float16])
 @torch.inference_mode()
 def test_flash_mla(b, s_q, mean_sk, h_q, h_kv, d, dv, block_size, causal,
-                   varlen):
-    # TODO: parametrize using pytest
-    dtype = torch.bfloat16
+                   varlen, dtype):
     device = torch.device("cuda:0")
     torch.set_default_dtype(dtype)
     torch.set_default_device(device)
@@ -48,7 +47,7 @@ def test_flash_mla(b, s_q, mean_sk, h_q, h_kv, d, dv, block_size, causal,
     random.seed(0)
 
     print(f"{b=}, {s_q=}, {mean_sk=}, {h_q=}, {h_kv=}, "
-          f"{d=}, {dv=}, {causal=}, {varlen=}")
+          f"{d=}, {dv=}, {causal=}, {varlen=}, {dtype=}")
 
     cache_seqlens = torch.full((b, ), mean_sk, dtype=torch.int32)
     if varlen: