[Inductor][Tritonparse] Get Inductor kernel params (pytorch#161953)

Summary:
X-link: meta-pytorch/tritonparse#89


Save the config args that Inductor burns into `inductor_metadata` so we can optionally pass them to any Jit Hooks that are set. This allows us to pass them to Tritonparse.

Reviewed By: davidberard98, FindHao

Differential Revision: D80994791

Author: NikhilAPatel

torch/_inductor/runtime/triton_heuristics.py

@@ -772,14 +772,25 @@ def _precompile_config(self, cfg: Config) -> CompileResult[_KernelType]:
             and getattr(knobs.runtime, "jit_post_compile_hook", None)
         ):
             try:
-                knobs.runtime.jit_post_compile_hook(
+                hook = knobs.runtime.jit_post_compile_hook
+
+                # base args everyone should get
+                call_kwargs = dict(
                     key=getattr(self.fn, "cache_key", self.kernel_hash or str(self.fn)),
                     repr=getattr(self.fn, "src", None),
                     fn=self.fn,
                     compile=binary,
                     is_manual_warmup=False,
                     already_compiled=True,
                 )
+
+                # only add inductor_args if the hook takes it
+                sig = inspect.signature(hook)
+                params = sig.parameters
+                if "inductor_args" in params:
+                    call_kwargs["inductor_args"] = self.inductor_meta["config_args"]
+
+                hook(**call_kwargs)
             except Exception:
                 log.exception("jit_post_compile_hook failed")
 

torch/_inductor/select_algorithm.py

@@ -613,6 +613,8 @@ def jit_lines(self):
             flops = self.estimate_flops()
             inductor_meta["kernel_flop"] = flops
 
+        inductor_meta["config_args"] = self.meta
+
         template_args = f"""
             num_stages={self.num_stages},
             num_warps={self.num_warps},