[DOCS] Restore the documentation workflow (#1503)

Not sure if it works at this moment, but at least we can restore the
workflow first.

.github/workflows/documentation.yml

@@ -0,0 +1,52 @@
+name: Documentation
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 0 * * *"
+
+jobs:
+
+  Build-Documentation:
+
+    runs-on: [self-hosted, V100]
+
+    steps:
+
+      - name: Checkout gh-pages
+        uses: actions/checkout@v2
+        with:
+          ref: 'gh-pages'
+
+      - name: Clear docs
+        run: |
+          rm -r /tmp/triton-docs
+        continue-on-error: true
+
+      - name: Checkout branch
+        uses: actions/checkout@v2
+
+      - name: Build docs
+        run: |
+          git fetch origin main
+          cd docs
+          sphinx-multiversion . _build/html/
+
+      - name: Publish docs
+        run: |
+          git branch
+          # update docs
+          mkdir /tmp/triton-docs;
+          mv docs/_build/html/* /tmp/triton-docs/
+          git checkout gh-pages
+          cp -r CNAME /tmp/triton-docs/
+          cp -r index.html /tmp/triton-docs/
+          cp -r .nojekyll /tmp/triton-docs/
+          rm -r *
+          cp -r /tmp/triton-docs/* .
+          git add .
+          git commit -am "[GH-PAGES] Updated website"
+          # publish docs
+          eval `ssh-agent -s`
+          DISPLAY=:0 SSH_ASKPASS=~/.ssh/give_pass.sh ssh-add ${{ secrets.SSH_KEY }} <<< ${{ secrets.SSH_PASS }}
+          git remote set-url origin git@github.com:openai/triton.git
+          git push

README.md

@@ -2,7 +2,7 @@
   <img src="https://cdn.openai.com/triton/assets/triton-logo.png" alt="Triton logo" width="88" height="100">
 </div>
 
-[![Wheels](https://github.com/openai/triton/actions/workflows/wheels.yml/badge.svg)](https://github.com/openai/triton/actions/workflows/wheels.yml)
+[![Wheels](https://github.com/openai/triton/actions/workflows/wheels.yml/badge.svg?branch=release/2.0.x)](https://github.com/openai/triton/actions/workflows/wheels.yml)
 
 
 **`Documentation`** |

docs/conf.py

@@ -50,7 +50,7 @@ def setup(app):
 
         def wrapped(obj, **kwargs):
             import triton
-            if isinstance(obj, triton.code_gen.JITFunction):
+            if isinstance(obj, triton.runtime.JITFunction):
                 obj = obj.fn
             return old(obj)
 
@@ -60,7 +60,7 @@ def setup(app):
 
     def documenter(app, obj, parent):
         import triton
-        if isinstance(obj, triton.code_gen.JITFunction):
+        if isinstance(obj, triton.runtime.JITFunction):
             obj = obj.fn
         return old_documenter(app, obj, parent)