# \[PATCH v6 3/9\] rv: Add tlob model DOT file

- From: \<hidden\>
- Date: 2026-08-20 16:45:50 
- List: linux-trace-kernel
- Page: https://ratatoskr.run/linux-trace-kernel/2026/08/17440552
- Thread: https://ratatoskr.run/linux-trace-kernel/2026/08/17440549/t.md

```text
From: Wen Yang <redacted>

Add the Graphviz DOT specification of the tlob hybrid automaton to
tools/verification/models/.  The model has three states (running,
waiting, sleeping), five transitions (switch_in, preempt, wakeup,
sleep), and a single clock invariant clk_elapsed < BUDGET_NS() active
in all states.

Suggested-by: Gabriele Monaco <gmonaco@redhat.com>
Signed-off-by: Wen Yang <redacted>
---
 tools/verification/models/tlob.dot | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 tools/verification/models/tlob.dot

diff --git a/tools/verification/models/tlob.dot b/tools/verification/models/tlob.dot
new file mode 100644
index 000000000000..515695599cf0
--- /dev/null
+++ b/tools/verification/models/tlob.dot
@@ -0,0 +1,24 @@
+digraph state_automaton {
+	center = true;
+	size = "7,11";
+	{node [shape = plaintext, style=invis, label=""] "__init_stopped"};
+	{node [shape = plaintext] "running"};
+	{node [shape = plaintext] "waiting"};
+	{node [shape = plaintext] "sleeping"};
+	{node [shape = plaintext] "stopped"};
+	"__init_stopped" -> "stopped";
+	"running"  [label = "running\nclk_elapsed < BUDGET_NS()",  color = green3];
+	"waiting"  [label = "waiting\nclk_elapsed < BUDGET_NS()"];
+	"sleeping" [label = "sleeping\nclk_elapsed < BUDGET_NS()"];
+	"stopped"  [label = "stopped"];
+	"running"  -> "sleeping" [ label = "sleep" ];
+	"running"  -> "waiting"  [ label = "preempt" ];
+	"waiting"  -> "running"  [ label = "switch_in" ];
+	"sleeping" -> "waiting"  [ label = "wakeup" ];
+	"running"  -> "stopped"  [ label = "stop" ];
+	"stopped"  -> "running"  [ label = "start;reset(clk_elapsed)" ];
+	{ rank = min ;
+		"__init_stopped";
+		"stopped";
+	}
+}
-- 
2.25.1

```