Added gpu_governor role

2026-08-26 08:19:42 +02:00
parent 75f68198ce
commit 4340f5d6c2
4 changed files with 226 additions and 1 deletions
@@ -0,0 +1,99 @@
+- name: Check if the governor is already installed
+  ansible.builtin.command:
+    argv:
+      - pacman
+      - -Qq
+      - cyan-skillfish-governor-smu
+  register: is_gov_installed
+  changed_when: false
+  failed_when: false
+
+- name: Build and install the governor from the AUR
+  when: is_gov_installed.rc != 0
+  block:
+    - name: Create temporary dir for build
+      ansible.builtin.tempfile:
+        state: directory
+        suffix: csgov
+      register: gov_tmp
+
+    - name: Download the AUR snapshot
+      ansible.builtin.get_url:
+        url: "https://aur.archlinux.org/cgit/aur.git/snapshot/cyan-skillfish-governor-smu.tar.gz"
+        dest: "{{ gov_tmp.path }}/cyan-skillfish-governor-smu.tar.gz"
+
+    - name: Extract the snapshot
+      ansible.builtin.unarchive:
+        src: "{{ gov_tmp.path }}/cyan-skillfish-governor-smu.tar.gz"
+        dest: "{{ gov_tmp.path }}"
+        remote_src: true
+
+    - name: Read the package metadata
+      ansible.builtin.slurp:
+        src: "{{ gov_tmp.path }}/cyan-skillfish-governor-smu/.SRCINFO"
+      register: gov_srcinfo
+
+    - name: Extract build and runtime dependencies
+      ansible.builtin.set_fact:
+        gov_build_deps: >-
+          {{ (gov_srcinfo.content | b64decode)
+             | regex_findall('(?m)^\s*(?:make|check)?depends(?:_\w+)?\s*=\s*([^\s<>=]+)')
+             | unique }}
+
+    - name: Ensure build prerequisites are present
+      become: true
+      ansible.builtin.pacman:
+        name: "{{ ['base-devel', 'fakeroot'] + gov_build_deps }}"
+        state: present
+
+    # Rust build, expect several minutes on Zen 2.
+    - name: Build the package (no install)
+      ansible.builtin.command:
+        argv:
+          - makepkg
+          - --noconfirm
+        chdir: "{{ gov_tmp.path }}/cyan-skillfish-governor-smu"
+      environment:
+        PKGDEST: "{{ gov_tmp.path }}/cyan-skillfish-governor-smu"
+
+    - name: Locate built package(s)
+      ansible.builtin.find:
+        paths: "{{ gov_tmp.path }}/cyan-skillfish-governor-smu"
+        patterns: "*.pkg.tar.zst"
+        excludes: "*-debug-*"
+        file_type: file
+      register: gov_built_pkgs
+
+    # Install with root, but OUTSIDE makepkg
+    - name: Install built package(s)
+      become: true
+      ansible.builtin.command:
+        argv:
+          - pacman
+          - -U
+          - --noconfirm
+          - "{{ item.path }}"
+      loop: "{{ gov_built_pkgs.files }}"
+      notify: Restart the GPU governor
+
+  always:
+    - name: Remove temporary directory
+      ansible.builtin.file:
+        path: "{{ gov_tmp.path }}"
+        state: absent
+      when: gov_tmp.path is defined
+
+- name: Deploy the governor configuration
+  become: true
+  ansible.builtin.template:
+    src: config.toml.j2
+    dest: /etc/cyan-skillfish-governor-smu/config.toml
+    mode: '0644'
+  notify: Restart the GPU governor
+
+- name: Enable and start the GPU governor
+  become: true
+  ansible.builtin.systemd_service:
+    name: cyan-skillfish-governor-smu
+    enabled: true
+    state: started