[igt-dev] [PATCH i-g-t 11/12] tools/intel_gpu_top: Add per client memory info

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

JSON output has the full breakdown but for now the interactive mode only
shows total and resident aggregated for all memory regions.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
 tools/intel_gpu_top.c | 114 +++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 112 insertions(+), 2 deletions(-)

diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index 27503ac03ebd..c239a0d4f350 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -133,11 +133,24 @@ struct intel_clients {
 	const char *pci_slot;
 	struct igt_drm_client_engines classes;
 	struct igt_drm_clients *clients;
+	struct igt_drm_client_regions *regions; /* Borrowed from first client */
 };
 
 static struct termios termios_orig;
 static bool class_view;
 
+/* Maps i915 fdinfo names to indices */
+static const char *memory_region_map[] = {
+	"system0",
+	"local0",
+};
+
+/* For JSON, 1:1 with indices above. */
+static const char *json_memory_region_names[] = {
+	"system",
+	"local",
+};
+
 __attribute__((format(scanf,3,4)))
 static int igt_sysfs_scanf(int dir, const char *attr, const char *fmt, ...)
 {
@@ -884,6 +897,9 @@ static struct igt_drm_clients *display_clients(struct igt_drm_clients *clients)
 			ac->val = calloc(c->engines->max_engine_id + 1,
 					 sizeof(ac->val[0]));
 			assert(ac->val);
+			ac->regions = c->regions;
+			ac->memory = calloc(c->regions->max_region_id + 1,
+					    sizeof(ac->memory[0]));
 			ac->samples = 1;
 		}
 
@@ -898,6 +914,14 @@ static struct igt_drm_clients *display_clients(struct igt_drm_clients *clients)
 
 		for (i = 0; i <= c->engines->max_engine_id; i++)
 			ac->val[i] += c->val[i];
+
+		for (i = 0; i <= c->regions->max_region_id; i++) {
+			ac->memory[i].total += c->memory[i].total;
+			ac->memory[i].shared += c->memory[i].shared;
+			ac->memory[i].resident += c->memory[i].resident;
+			ac->memory[i].purgeable += c->memory[i].purgeable;
+			ac->memory[i].active += c->memory[i].active;
+		}
 	}
 
 	aggregated->num_clients = num;
@@ -922,8 +946,10 @@ static void free_display_clients(struct igt_drm_clients *clients)
 	 * "display" clients are not proper clients and have un-initialized
 	 * or borrowed fields which we don't want the library to try and free.
 	 */
-	igt_for_each_drm_client(clients, c, tmp)
+	igt_for_each_drm_client(clients, c, tmp) {
 		free(c->val);
+		free(c->memory);
+	}
 
 	free(clients->client);
 	free(clients);
@@ -2016,6 +2042,9 @@ print_clients_header(struct igt_drm_clients *clients, int lines,
 		if (lines++ >= con_h || len >= con_w)
 			return lines;
 
+		if (iclients->regions)
+			len += printf("     MEM      RSS ");
+
 		if (iclients->classes.num_engines) {
 			unsigned int i;
 			int width;
@@ -2059,6 +2088,20 @@ print_clients_header(struct igt_drm_clients *clients, int lines,
 static bool numeric_clients;
 static bool filter_idle;
 
+static int print_size(uint64_t sz)
+{
+	char units[] = { ' ', 'K', 'M', 'G' };
+	unsigned int u;
+
+	for (u = 0; u < ARRAY_SIZE(units) - 1; u++) {
+		if (sz & 1023 || sz < 1024)
+			break;
+		sz /= 1024;
+	}
+
+	return printf("%7"PRIu64"%c ", sz, units[u]);
+}
+
 static int
 print_client(struct igt_drm_client *c, struct engines *engines, double t, int lines,
 	     int con_w, int con_h, unsigned int period_us, int *class_w)
@@ -2076,6 +2119,18 @@ print_client(struct igt_drm_client *c, struct engines *engines, double t, int li
 
 		len = printf("%*s ", clients->max_pid_len, c->pid_str);
 
+		if (iclients->regions) {
+			uint64_t sz;
+
+			for (sz = 0, i = 0; i <= c->regions->max_region_id; i++)
+				sz += c->memory[i].total;
+			len += print_size(sz);
+
+			for (sz = 0, i = 0; i <= c->regions->max_region_id; i++)
+				sz += c->memory[i].resident;
+			len += print_size(sz);
+		}
+
 		for (i = 0; i <= iclients->classes.max_engine_id; i++) {
 			double pct, max;
 
@@ -2115,6 +2170,42 @@ print_client(struct igt_drm_client *c, struct engines *engines, double t, int li
 		snprintf(buf, sizeof(buf), "%u", c->pid);
 		__json_add_member("pid", buf);
 
+		if (iclients->regions) {
+			pops->open_struct("memory");
+
+			for (i = 0; i < ARRAY_SIZE(json_memory_region_names);
+			     i++) {
+				if (i > c->regions->max_region_id)
+					break;
+
+				pops->open_struct(json_memory_region_names[i]);
+
+				snprintf(buf, sizeof(buf), "%" PRIu64,
+					 c->memory[i].total);
+				__json_add_member("total", buf);
+
+				snprintf(buf, sizeof(buf), "%" PRIu64,
+					 c->memory[i].shared);
+				__json_add_member("shared", buf);
+
+				snprintf(buf, sizeof(buf), "%" PRIu64,
+					 c->memory[i].resident);
+				__json_add_member("resident", buf);
+
+				snprintf(buf, sizeof(buf), "%" PRIu64,
+					 c->memory[i].purgeable);
+				__json_add_member("purgeable", buf);
+
+				snprintf(buf, sizeof(buf), "%" PRIu64,
+					 c->memory[i].active);
+				__json_add_member("active", buf);
+
+				pops->close_struct();
+			}
+
+			pops->close_struct();
+		}
+
 		if (c->samples > 1) {
 			pops->open_struct("engine-classes");
 
@@ -2460,10 +2551,29 @@ static void intel_scan_clients(struct intel_clients *iclients)
 		"video-enhance",
 		"compute",
 	};
+	struct igt_drm_client *c;
+	unsigned int i;
 
 	igt_drm_clients_scan(iclients->clients, client_match,
 			     engine_map, ARRAY_SIZE(engine_map),
-			     NULL, 0);
+			     memory_region_map, ARRAY_SIZE(memory_region_map));
+
+	iclients->regions = NULL;
+
+	if (!iclients->clients)
+		return;
+
+	/*
+	 * Borrow memory region data from first client so we can use it
+	 * when displaying stuff. All regions are the same due our client_match.
+	 */
+	igt_for_each_drm_client(iclients->clients, c, i) {
+		if (c->status == IGT_DRM_CLIENT_ALIVE) {
+			if (c->regions->num_regions)
+				iclients->regions = c->regions;
+			break;
+		}
+	}
 }
 
 int main(int argc, char **argv)
-- 
2.39.2