[PATCH i-g-t v2 14/21] lib/igt_drm_clients: Move engine fields to substruct

[Lucas De Marchi <lucas.demarchi@intel.com>]

Instead of keep adding arrays, move all the arrays indexed by engine to
a substruct.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
---
 lib/igt_drm_clients.c | 19 ++++++++-----------
 lib/igt_drm_clients.h |  6 ++++--
 tools/gputop.c        |  2 +-
 tools/intel_gpu_top.c | 14 +++++++-------
 4 files changed, 20 insertions(+), 21 deletions(-)

diff --git a/lib/igt_drm_clients.c b/lib/igt_drm_clients.c
index 940c95381..71a938b18 100644
--- a/lib/igt_drm_clients.c
+++ b/lib/igt_drm_clients.c
@@ -109,13 +109,13 @@ igt_drm_client_update(struct igt_drm_client *c, unsigned int pid, char *name,
 	for (i = 0; i <= c->engines->max_engine_id; i++) {
 		assert(i < ARRAY_SIZE(info->busy));
 
-		if (info->busy[i] < c->last_busy[i])
+		if (info->busy[i] < c->u[i].last_busy)
 			continue; /* It will catch up soon. */
 
 		c->total_runtime += info->busy[i];
-		c->delta_busy[i] = info->busy[i] - c->last_busy[i];
-		c->last_runtime += c->delta_busy[i];
-		c->last_busy[i] = info->busy[i];
+		c->u[i].delta_busy = info->busy[i] - c->u[i].last_busy;
+		c->last_runtime += c->u[i].delta_busy;
+		c->u[i].last_busy = info->busy[i];
 	}
 
 	/* Memory regions */
@@ -183,11 +183,9 @@ igt_drm_client_add(struct igt_drm_clients *clients,
 		c->engines->max_engine_id = i;
 	}
 
-	c->delta_busy = calloc(c->engines->max_engine_id + 1,
-			       sizeof(*c->delta_busy));
-	c->last_busy = calloc(c->engines->max_engine_id + 1,
-			      sizeof(*c->last_busy));
-	assert(c->delta_busy && c->last_busy);
+	c->u = calloc(c->engines->max_engine_id + 1,
+		      sizeof(*c->u));
+	assert(c->u);
 
 	/* Memory regions */
 	c->regions = calloc(1, sizeof(*c->regions));
@@ -225,8 +223,7 @@ void igt_drm_client_free(struct igt_drm_client *c, bool clear)
 	}
 	free(c->engines);
 
-	free(c->delta_busy);
-	free(c->last_busy);
+	free(c->u);
 
 	if (c->regions) {
 		for (i = 0; i <= c->regions->max_region_id; i++)
diff --git a/lib/igt_drm_clients.h b/lib/igt_drm_clients.h
index 06b29cfd1..5c6130ff1 100644
--- a/lib/igt_drm_clients.h
+++ b/lib/igt_drm_clients.h
@@ -65,8 +65,10 @@ struct igt_drm_client {
 	unsigned int samples; /* Count of times scanning updated this client. */
 	unsigned long total_runtime; /* Aggregate busyness on all engines since client start. */
 	unsigned long last_runtime; /* Aggregate busyness on all engines since previous scan. */
-	unsigned long *delta_busy; /* Array of engine busyness data, relative to previous scan. */
-	uint64_t *last_busy; /* Array of engine busyness data as parsed from fdinfo. */
+	struct igt_drm_client_utilization {
+		unsigned long delta_busy; /* Engine busyness data, relative to previous scan. */
+		uint64_t last_busy; /* Engine busyness data as parsed from fdinfo. */
+	} *u; /* Array of engine utilization */
 	struct drm_client_meminfo *memory; /* Array of region memory utilisation as parsed from fdinfo. */
 };
 
diff --git a/tools/gputop.c b/tools/gputop.c
index 2946aaa5e..bca7f4bc7 100644
--- a/tools/gputop.c
+++ b/tools/gputop.c
@@ -208,7 +208,7 @@ print_client(struct igt_drm_client *c, struct igt_drm_client **prevc,
 		if (!c->engines->capacity[i])
 			continue;
 
-		pct = (double)c->delta_busy[i] / period_us / 1e3 * 100 /
+		pct = (double)c->u[i].delta_busy / period_us / 1e3 * 100 /
 		      c->engines->capacity[i];
 
 		/*
diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index adc95a95e..a4aa8414b 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -893,9 +893,9 @@ static struct igt_drm_clients *display_clients(struct igt_drm_clients *clients)
 			strcpy(ac->pid_str, c->pid_str);
 			strcpy(ac->print_name, c->print_name);
 			ac->engines = c->engines;
-			ac->delta_busy = calloc(c->engines->max_engine_id + 1,
-						sizeof(ac->delta_busy[0]));
-			assert(ac->delta_busy);
+			ac->u = calloc(c->engines->max_engine_id + 1,
+				       sizeof(*ac->u));
+			assert(ac->u);
 			ac->regions = c->regions;
 			ac->memory = calloc(c->regions->max_region_id + 1,
 					    sizeof(ac->memory[0]));
@@ -912,7 +912,7 @@ static struct igt_drm_clients *display_clients(struct igt_drm_clients *clients)
 		ac->last_runtime += c->last_runtime;
 
 		for (i = 0; i <= c->engines->max_engine_id; i++)
-			ac->delta_busy[i] += c->delta_busy[i];
+			ac->u[i].delta_busy += c->u[i].delta_busy;
 
 		for (i = 0; i <= c->regions->max_region_id; i++) {
 			ac->memory[i].total += c->memory[i].total;
@@ -946,7 +946,7 @@ static void free_display_clients(struct igt_drm_clients *clients)
 	 * or borrowed fields which we don't want the library to try and free.
 	 */
 	igt_for_each_drm_client(clients, c, tmp) {
-		free(c->delta_busy);
+		free(c->u);
 		free(c->memory);
 	}
 
@@ -2161,7 +2161,7 @@ print_client(struct igt_drm_client *c, struct engines *engines, double t, int li
 				continue;
 			}
 
-			pct = (double)c->delta_busy[i] / period_us / 1e3 * 100;
+			pct = (double)c->u[i].delta_busy / period_us / 1e3 * 100;
 
 			/*
 			 * Guard against possible time-drift between sampling
@@ -2235,7 +2235,7 @@ print_client(struct igt_drm_client *c, struct engines *engines, double t, int li
 					 iclients->classes.names[i]);
 				pops->open_struct(buf);
 
-				pct = (double)c->delta_busy[i] / period_us / 1e3 * 100;
+				pct = (double)c->u[i].delta_busy / period_us / 1e3 * 100;
 				snprintf(buf, sizeof(buf), "%f", pct);
 				__json_add_member("busy", buf);
 
-- 
2.43.0