[PATCH i-g-t 6/6] intel_gpu_top: Add a sanity check discovered busy metric is per engine

[Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx>]

From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

Adding a cross-check with ABI config name space and not just relying on
sysfs names.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Dmitry Rogozhkin <dmitry.v.rogozhkin@xxxxxxxxx>
---
 tools/intel_gpu_top.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index 41c59a72c09d..81c724d1fe1c 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -376,6 +376,12 @@ static struct engines *discover_engines(char *device)
 			break;
 		}
 
+		/* Double check config is an engine config. */
+		if (engine->busy.config >= __I915_PMU_OTHER(0)) {
+			free((void *)engine->name);
+			continue;
+		}
+
 		engine->class = (engine->busy.config &
 				 (__I915_PMU_OTHER(0) - 1)) >>
 				I915_PMU_CLASS_SHIFT;
-- 
2.32.0