[BugFix] Fix duplicate symbol for custom QuantLightningIndexer operator (vllm-project#10744)

### What this PR does / why we need it?
This PR fixes a duplicate symbol conflict between the custom AscendC
operator and the torch-level ACLNN operator for
`AclNNQuantLightningIndexer`.

**Problem:**

The custom operator defined in `csrc/attention/quant_lightning_indexer/`
shared the same symbol name `AclNNQuantLightningIndexer` with the ACLNN
operator invoked via `EXEC_NPU_CMD` in `csrc/torch_binding.cpp`. This
caused a symbol duplication conflict during linking/compilation,
preventing the custom operator from being registered and loaded
correctly.

**Solution:**

Rename all custom operator symbols from `AclNNQuantLightningIndexer` →
`AclNNQuantLightningIndexerCustom` to disambiguate from the torch-layer
`aclnnQuantLightningIndexer`. The changes include:

- **OpDef class**: `QuantLightningIndexer` →
`QuantLightningIndexerCustom`
- **Tiling class**: `QuantLightningIndexerTiling` →
`QuantLightningIndexerCustomTiling`
- **Kernel function**: `quant_lightning_indexer` →
`quant_lightning_indexer_custom`
- **CMake registration**: `OP_NAME` and `OPTYPE` updated to
`QuantLightningIndexerCustom` / `quant_lightning_indexer_custom`
- **File rename**: `quant_lightning_indexer_def.cpp` →
`quant_lightning_indexer_custom_def.cpp`
- **Template tiling key**: `ASCENDC_TPL_ARGS_DECL(QuantLightningIndexer`
→ `ASCENDC_TPL_ARGS_DECL(QuantLightningIndexerCustom`
- **Torch binding**: `aclnnQuantLightningIndexer` →
`aclnnQuantLightningIndexerCustom`

All `OP_LOGD`/`OP_LOGE` log tags are also updated accordingly for
consistent debugging.

### Does this PR introduce _any_ user-facing change?
No. This is a purely internal renaming of operator symbols. The external
API and behavior remain unchanged.

### How was this patch tested?


- vLLM version: v0.22.1
- vLLM main:
vllm-project/vllm@967c5c3

Signed-off-by: Li Jiahang <216526138+lijiahang226@users.noreply.github.com>

Author: lijiahang226

…n/quant_lightning_indexer/CMakeLists.txt …_lightning_indexer_custom/CMakeLists.txtcsrc/attention/quant_lightning_indexer/CMakeLists.txt renamed to csrc/attention/quant_lightning_indexer_custom/CMakeLists.txt csrc/attention/quant_lightning_indexer/CMakeLists.txt renamed to csrc/attention/quant_lightning_indexer_custom/CMakeLists.txt

@@ -11,12 +11,12 @@ add_op_to_compiled_list()
 
 if (BUILD_OPEN_PROJECT)
     target_sources(op_host_aclnn PRIVATE
-        quant_lightning_indexer_def.cpp
+        quant_lightning_indexer_custom_def.cpp
      )
 endif()
 
 add_ops_compile_options(
-    OP_NAME QuantLightningIndexer
+    OP_NAME QuantLightningIndexerCustom
     OPTIONS --cce-auto-sync=off
             -Wno-deprecated-declarations
             -Werror
@@ -25,5 +25,5 @@ add_ops_compile_options(
 )
 
 if (NOT BUILD_OPS_RTY_KERNEL)
-    add_modules_sources(OPTYPE quant_lightning_indexer ACLNNTYPE aclnn)
+    add_modules_sources(OPTYPE quant_lightning_indexer_custom ACLNNTYPE aclnn)
 endif()

…ention/quant_lightning_indexer/README.md …quant_lightning_indexer_custom/README.mdcsrc/attention/quant_lightning_indexer/README.md renamed to csrc/attention/quant_lightning_indexer_custom/README.md csrc/attention/quant_lightning_indexer/README.md renamed to csrc/attention/quant_lightning_indexer_custom/README.md

@@ -1,24 +1,24 @@
 /**
- * Copyright (c) 2026 Huawei Technologies Co., Ltd.
- * This program is free software, you can redistribute it and/or modify it under the terms and conditions of
- * CANN Open Software License Agreement Version 2.0 (the "License").
- * Please refer to the License for details. You may not use this file except in compliance with the License.
- * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
- * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
- * See LICENSE in the root of the software repository for the full text of the License.
- */
+ * Copyright (c) 2026 Huawei Technologies Co., Ltd.
+ * This program is free software, you can redistribute it and/or modify it under the terms and conditions of
+ * CANN Open Software License Agreement Version 2.0 (the "License").
+ * Please refer to the License for details. You may not use this file except in compliance with the License.
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See LICENSE in the root of the software repository for the full text of the License.
+ */
 
 /*!
- * \file quant_lightning_indexer_def.cpp
+ * \file quant_lightning_indexer_custom_def.cpp
  * \brief
  */
 
 #include "register/op_def_registry.h"
 
 namespace ops {
-class QuantLightningIndexer : public OpDef {
+class QuantLightningIndexerCustom : public OpDef {
 public:
-    explicit QuantLightningIndexer(const char *name) : OpDef(name)
+    explicit QuantLightningIndexerCustom(const char *name) : OpDef(name)
     {
         this->Input("query")
             .ParamType(REQUIRED)
@@ -149,5 +149,5 @@ class QuantLightningIndexer : public OpDef {
         this->AICore().AddConfig("ascend950", aicore_config_950);
     }
 };
-OP_ADD(QuantLightningIndexer);
+OP_ADD(QuantLightningIndexerCustom);
 }  // namespace ops

…lightning_indexer/op_host/CMakeLists.txt …ng_indexer_custom/op_host/CMakeLists.txtcsrc/attention/quant_lightning_indexer/op_host/CMakeLists.txt renamed to csrc/attention/quant_lightning_indexer_custom/op_host/CMakeLists.txt csrc/attention/quant_lightning_indexer/op_host/CMakeLists.txt renamed to csrc/attention/quant_lightning_indexer_custom/op_host/CMakeLists.txt

@@ -33,7 +33,7 @@ constexpr uint32_t DIM_NUM_4 = 4;
 static ge::graphStatus InferShapeQuantLightningIndexer(gert::InferShapeContext *context)
 {
     if (context == nullptr) {
-        OP_LOGE("QuantLightningIndexer", "context is nullptr!");
+        OP_LOGE("QuantLightningIndexerCustom", "context is nullptr!");
         return ge::GRAPH_FAILED;
     }
     const gert::Shape *queryShape = context->GetInputShape(QUERY_INDEX);
@@ -82,25 +82,25 @@ static ge::graphStatus InferShapeQuantLightningIndexer(gert::InferShapeContext *
         sparseValuesShape->SetDim(0, 0);
     }
 
-    OP_LOGD(context->GetNodeName(), "QuantLightningIndexer InferShape end.");
+    OP_LOGD(context->GetNodeName(), "QuantLightningIndexerCustom InferShape end.");
     return ge::GRAPH_SUCCESS;
 }
 
 static ge::graphStatus InferDataTypeQuantLightningIndexer(gert::InferDataTypeContext *context)
 {
     if (context == nullptr) {
-        OP_LOGE("QuantLightningIndexer", "InferDataTypeContext context is nullptr!");
+        OP_LOGE("QuantLightningIndexerCustom", "InferDataTypeContext context is nullptr!");
         return ge::GRAPH_FAILED;
     }
-    OP_LOGD(context->GetNodeName(), "Enter QuantLightningIndexer InferDataType impl.");
+    OP_LOGD(context->GetNodeName(), "Enter QuantLightningIndexerCustom InferDataType impl.");
     // default index data type is int32
     ge::DataType outputType = ge::DT_INT32;
     context->SetOutputDataType(0, outputType);
-    OP_LOGD(context->GetNodeName(), "QuantLightningIndexer InferDataType end.");
+    OP_LOGD(context->GetNodeName(), "QuantLightningIndexerCustom InferDataType end.");
     return GRAPH_SUCCESS;
 }
 
-IMPL_OP_INFERSHAPE(QuantLightningIndexer)
+IMPL_OP_INFERSHAPE(QuantLightningIndexerCustom)
     .InferShape(InferShapeQuantLightningIndexer)
     .InferDataType(InferDataTypeQuantLightningIndexer);
 }  // namespace ops

…/op_host/quant_lightning_indexer_def.cpp …t/quant_lightning_indexer_custom_def.cppcsrc/attention/quant_lightning_indexer/op_host/quant_lightning_indexer_def.cpp renamed to csrc/attention/quant_lightning_indexer_custom/op_host/quant_lightning_indexer_custom_def.cpp csrc/attention/quant_lightning_indexer/op_host/quant_lightning_indexer_def.cpp renamed to csrc/attention/quant_lightning_indexer_custom/op_host/quant_lightning_indexer_custom_def.cpp

@@ -85,7 +85,7 @@ ge::graphStatus QLIInfoParser::CheckRequiredParaExistence() const
 ge::graphStatus QLIInfoParser::GetOpName()
 {
     if (context_->GetNodeName() == nullptr) {
-        OP_LOGE("QuantLightningIndexer", "opName got from TilingContext is nullptr");
+        OP_LOGE("QuantLightningIndexerCustom", "opName got from TilingContext is nullptr");
         return ge::GRAPH_FAILED;
     }
     opName_ = context_->GetNodeName();
@@ -849,8 +849,8 @@ static ge::graphStatus TilingPrepareForQuantLightningIndexer(gert::TilingParseCo
     return ge::GRAPH_SUCCESS;
 }
 
-// --------------------------QuantLightningIndexerTiling类成员函数定义-----------------------
-ge::graphStatus QuantLightningIndexerTiling::DoTiling(QLITilingInfo *tilingInfo)
+// --------------------------QuantLightningIndexerCustomTiling类成员函数定义-----------------------
+ge::graphStatus QuantLightningIndexerCustomTiling::DoTiling(QLITilingInfo *tilingInfo)
 {
     // -------------set blockdim-----------------
     auto ascendcPlatform = platform_ascendc::PlatformAscendC(tilingInfo->platformInfo);
@@ -929,19 +929,19 @@ ge::graphStatus QuantLightningIndexerTiling::DoTiling(QLITilingInfo *tilingInfo)
 // --------------------------Tiling函数定义---------------------------
 ge::graphStatus TilingForQuantLightningIndexer(gert::TilingContext *context)
 {
-    OP_CHECK_IF(context == nullptr, OP_LOGE("QuantLightningIndexer", "Tiling context is null."),
+    OP_CHECK_IF(context == nullptr, OP_LOGE("QuantLightningIndexerCustom", "Tiling context is null."),
                return ge::GRAPH_FAILED);
     QLITilingInfo QLIInfo;
     QLIInfoParser QLIInfoParser(context);
     if (QLIInfoParser.ParseAndCheck(QLIInfo) != ge::GRAPH_SUCCESS) {
         return ge::GRAPH_FAILED;
     }
-    QuantLightningIndexerTiling QLITiling(context);
+    QuantLightningIndexerCustomTiling QLITiling(context);
     return QLITiling.DoTiling(&QLIInfo);
 }
 
 // --------------------------Tiling及函数TilingPrepare函数注册--------
-IMPL_OP_OPTILING(QuantLightningIndexer)
+IMPL_OP_OPTILING(QuantLightningIndexerCustom)
     .Tiling(TilingForQuantLightningIndexer)
     .TilingParse<QLICompileInfo>(TilingPrepareForQuantLightningIndexer);
 

…t/quant_lightning_indexer_infershape.cpp …t/quant_lightning_indexer_infershape.cppcsrc/attention/quant_lightning_indexer/op_host/quant_lightning_indexer_infershape.cpp renamed to csrc/attention/quant_lightning_indexer_custom/op_host/quant_lightning_indexer_infershape.cpp csrc/attention/quant_lightning_indexer/op_host/quant_lightning_indexer_infershape.cpp renamed to csrc/attention/quant_lightning_indexer_custom/op_host/quant_lightning_indexer_infershape.cpp

@@ -103,7 +103,7 @@ TILING_DATA_FIELD_DEF(uint32_t, returnValues)
 TILING_DATA_FIELD_DEF(int64_t, stride)
 TILING_DATA_FIELD_DEF(int64_t, scaleStride)
 END_TILING_DATA_DEF
-REGISTER_TILING_DATA_CLASS(QuantLightningIndexer, QLITilingData)
+REGISTER_TILING_DATA_CLASS(QuantLightningIndexerCustom, QLITilingData)
 
 // -----------算子CompileInfo定义-------------------
 struct QLICompileInfo {};
@@ -249,9 +249,9 @@ class QLIInfoParser {
 };
 
 // ---------------算子Tiling类---------------
-class QuantLightningIndexerTiling {
+class QuantLightningIndexerCustomTiling {
 public:
-    explicit QuantLightningIndexerTiling(gert::TilingContext *context) : context_(context) {};
+    explicit QuantLightningIndexerCustomTiling(gert::TilingContext *context) : context_(context) {};
     ge::graphStatus DoTiling(QLITilingInfo *tilingInfo);
 
 private: