### What this PR does / why we need it?
Some parameters of Triton operators are unnecessarily modified with the
"constexpr" modifier. When these parameters change, recompilation is
triggered, which significantly affects the model performance. Therefore,
these parameters need to be rectified.
backport: https://github.com/vllm-project/vllm-ascend/pull/7482
Signed-off-by: w30012745 <wangxiaoshuai2@h-partners.com>
Co-authored-by: w30012745 <wangxiaoshuai2@h-partners.com>
### What this PR does / why we need it?
Add layernormFn triton op for qwen3Next model for better performance.
<img width="248" height="526" alt="image"
src="https://github.com/user-attachments/assets/27b47157-5df5-4db1-aa88-1dae799b2bf6"
/>
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
- vLLM version: v0.13.0
- vLLM main:
2f4e6548ef
---------
Signed-off-by: SunnyLee219 <3294305115@qq.com>