[CI 4/6] lib/igt_drm_fdinfo: Parse drm-total-cycles

[Lucas De Marchi]

Parse drm-total-cycles and annotate what are the possible engine
utilization types that can be used. Currently there are 2 possible ways
to calculate utilization:

1) via drm-engine, that uses the time and derive the utilization by
   comparing to the CPU time
2) via drm-cycles + drm-total-cycles, that uses the GPU time

igt_drm_fdinfo just marks the presence of the keys, letting the caller
decide which method to use.

It is assumed that if any drm-engine, drm-cycles or drm-total-cycles is
available, it's available for all engines with non-zero utilization.

Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa at intel.com>
Link: https://lore.kernel.org/r/20240504064643.25863-12-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
 lib/igt_drm_fdinfo.c | 4 ++++
 lib/igt_drm_fdinfo.h | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/lib/igt_drm_fdinfo.c b/lib/igt_drm_fdinfo.c
index 9622d05b7..539d15056 100644
--- a/lib/igt_drm_fdinfo.c
+++ b/lib/igt_drm_fdinfo.c
@@ -265,6 +265,10 @@ __igt_parse_drm_fdinfo(int dir, const char *fd, struct drm_client_fdinfo *info,
 			idx = parse_engine(l + keylen, info,
 					   name_map, map_entries, &val);
 			UPDATE_ENGINE(idx, cycles, val, DRM_FDINFO_UTILIZATION_CYCLES);
+		} else if (strstartswith(l, "drm-total-cycles-", &keylen)) {
+			idx = parse_engine(l + keylen, info,
+					   name_map, map_entries, &val);
+			UPDATE_ENGINE(idx, total_cycles, val, DRM_FDINFO_UTILIZATION_TOTAL_CYCLES);
 		} else if (strstartswith(l, "drm-total-", &keylen)) {
 			idx = parse_region(l + keylen, info,
 					   region_map, region_entries, &val);
diff --git a/lib/igt_drm_fdinfo.h b/lib/igt_drm_fdinfo.h
index ea90edd79..35f43305b 100644
--- a/lib/igt_drm_fdinfo.h
+++ b/lib/igt_drm_fdinfo.h
@@ -44,6 +44,7 @@ struct drm_client_meminfo {
 enum drm_fdinfo_utilization {
 	DRM_FDINFO_UTILIZATION_ENGINE_TIME	= 1U << 0,
 	DRM_FDINFO_UTILIZATION_CYCLES		= 1U << 1,
+	DRM_FDINFO_UTILIZATION_TOTAL_CYCLES	= 1U << 2,
 };
 
 struct drm_client_fdinfo {
@@ -63,6 +64,8 @@ struct drm_client_fdinfo {
 	uint64_t engine_time[DRM_CLIENT_FDINFO_MAX_ENGINES];
 	/* drm-cycles-<engine> values */
 	uint64_t cycles[DRM_CLIENT_FDINFO_MAX_ENGINES];
+	/* drm-total-cycles-<engine> values */
+	uint64_t total_cycles[DRM_CLIENT_FDINFO_MAX_ENGINES];
 
 	unsigned int num_regions;
 	unsigned int last_region_index;
-- 
2.43.0