Files
vllm-ascend/csrc/mla_preprocess/op_kernel/kernel/common.h
Chen Chen bcc313e8f2 add mla_preprocess kernel (#3226)
### What this PR does / why we need it?

- Adds the `mla_preprocess` custom kernel to provide an optimized
pre-processing operator for Multi-head Latent Attention (MLA) on Ascend
NPUs.
- Wires the new kernel into the C++ extension pipeline so vLLM can
invoke it directly, cutting Python-side tensor shuffling and memory
copies that previously bottlenecked MLA compilation paths.

### Does this PR introduce any user-facing change?

- No. The change only introduces a low-level kernel; public APIs and
inference behavior remain unchanged.

### How was this patch tested?

- Dedicated Ascend kernels are not covered by our CI yet, so no extra
automated tests were added. Future MLA-focused regression runs will
cover this path.

- vLLM version: v0.11.0

Signed-off-by: Chen Chen <0109chenchen@gmail.com>
2025-10-12 07:39:45 +08:00

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1.1 KiB
C

/* Adapted from
* https://gitee.com/ascend/ascend-transformer-boost.git
*
* Copyright (c) 2024 Huawei Technologies Co., Ltd.
* This file is a part of the CANN Open Software.
* Licensed under CANN Open Software License Agreement Version 1.0 (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.
*/
#ifndef INCLUDE_COMMON_H
#define INCLUDE_COMMON_H
#define CONST_2 2
#define SET_FLAG(trigger, waiter, e) AscendC::SetFlag<AscendC::HardEvent::trigger##_##waiter>((e))
#define WAIT_FLAG(trigger, waiter, e) AscendC::WaitFlag<AscendC::HardEvent::trigger##_##waiter>((e))
#define PIPE_BARRIER(pipe) AscendC::PipeBarrier<PIPE_##pipe>()
#ifndef __force_inline__
#define __force_inline__ inline __attribute__((always_inline))
#endif
#endif