[RFC,3/3] intel-gpu-top: Support for client stats

Submitted by Tvrtko Ursulin on Feb. 14, 2018, 6:52 p.m.

Details

Message ID 20180214185207.8111-4-tvrtko.ursulin@linux.intel.com
State New
Series "New intel-gpu-top"
Headers show

Commit Message

Tvrtko Ursulin Feb. 14, 2018, 6:52 p.m.
From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 tools/intel_gpu_top.c | 268 +++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 263 insertions(+), 5 deletions(-)

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diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index 59a112240092..63f0c1941258 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -407,8 +407,222 @@  static void pmu_sample(struct engines *engines)
 	}
 }
 
+enum client_status {
+	FREE = 0, /* mbz */
+	ALIVE,
+	PROBE
+};
+
+struct client {
+	enum client_status status;
+	unsigned int id;
+	unsigned int pid;
+	char name[128];
+	unsigned int samples;
+	unsigned long total;
+	struct engines *engines;
+	unsigned long *val;
+	uint64_t *last;
+};
+
+#define SYSFS_ENABLE "/sys/class/drm/card0/clients/enable_stats"
+#define SYSFS_CLIENTS "/sys/class/drm/card0/clients/"
+
+#define PERIOD_US (1000e3)
+
+static struct client *clients;
+static unsigned int num_clients;
+
+#define for_each_client(c, tmp) \
+	for (tmp = num_clients, c = clients; tmp > 0; tmp--, c++)
+
+static uint64_t read_client_busy(unsigned int id, const char *engine)
+{
+	char buf[256];
+	ssize_t ret;
+
+	ret = snprintf(buf, sizeof(buf), SYSFS_CLIENTS "/%u/busy/%s",
+		       id, engine);
+	assert(ret > 0);
+
+	return filename_to_u64(buf, 10);
+}
+
+static struct client *find_client(enum client_status status, unsigned int id)
+{
+	struct client *c;
+	unsigned int tmp;
+
+	for_each_client(c, tmp) {
+		if ((status == FREE && c->status == FREE) ||
+		    (status == c->status && c->id == id)) {
+			return c;
+		}
+	}
+
+	return NULL;
+}
+
+static void update_client(struct client *c, unsigned int pid, char *name)
+{
+	uint64_t val[c->engines->num_engines];
+	unsigned int i;
+
+	if (c->pid != pid)
+		c->pid = pid;
+
+	if (strncmp(c->name, name, sizeof(c->name)))
+		strncpy(c->name, name, sizeof(c->name));
+
+	for (i = 0; i < c->engines->num_engines; i++) {
+		struct engine *engine = engine_ptr(c->engines, i);
+
+		val[i] = read_client_busy(c->id, engine->name);
+	}
+
+	c->total = 0;
+
+	for (i = 0; i < c->engines->num_engines; i++) {
+		assert(val[i] >= c->last[i]);
+		c->val[i] = val[i] - c->last[i];
+		c->total += c->val[i];
+		c->last[i] = val[i];
+	}
+
+	c->samples++;
+	c->status = ALIVE;
+}
+
+static void
+add_client(unsigned int id, unsigned int pid, char *name,
+	   struct engines *engines)
+{
+	struct client *c;
+
+	assert(!find_client(ALIVE, id));
+
+	c = find_client(FREE, 0);
+	if (!c) {
+		unsigned int idx = num_clients;
+
+		num_clients += (num_clients + 2) / 2;
+		clients = realloc(clients, num_clients * sizeof(*c));
+		assert(clients);
+		c = &clients[idx];
+		memset(c, 0, (num_clients - idx) * sizeof(*c));
+	}
+
+	c->id = id;
+	c->engines = engines;
+	c->val = calloc(engines->num_engines, sizeof(c->val));
+	c->last = calloc(engines->num_engines, sizeof(c->last));
+	assert(c->val && c->last);
+
+	update_client(c, pid, name);
+
+// 	c = find_client(c->status, c->id);
+}
+
+static void free_client(struct client *c)
+{
+	free(c->val);
+	free(c->last);
+	memset(c, 0, sizeof(*c));
+}
+
+static char *read_client_sysfs(unsigned int id, const char *field)
+{
+	char buf[256];
+	ssize_t ret;
+
+	ret = snprintf(buf, sizeof(buf), SYSFS_CLIENTS "/%u/%s", id, field);
+	assert(ret > 0);
+
+	ret = filename_to_buf(buf, buf, sizeof(buf));
+	assert(ret == 0);
+
+	return strdup(buf);
+}
+
+static void scan(struct engines *engines)
+{
+	struct dirent *dent;
+	struct client *c;
+	char *pid, *name;
+	unsigned int tmp;
+	unsigned int id;
+	DIR *d;
+
+	for_each_client(c, tmp) {
+		if (c->status == ALIVE)
+			c->status = PROBE;
+	}
+
+	d = opendir(SYSFS_CLIENTS);
+	assert(!NULL);
+
+	while ((dent = readdir(d)) != NULL) {
+		if (dent->d_type != DT_DIR)
+			continue;
+		if (!isdigit(dent->d_name[0]))
+			continue;
+
+		id = atoi(dent->d_name);
+
+		name = read_client_sysfs(id, "name");
+		assert(name);
+
+		pid = read_client_sysfs(id, "pid");
+		assert(pid);
+
+		c = find_client(PROBE, id);
+		if (c) {
+			update_client(c, atoi(pid), name);
+			continue;
+		}
+
+		add_client(id, atoi(pid), name, engines);
+
+		free(name);
+		free(pid);
+	}
+
+	closedir(d);
+
+	for_each_client(c, tmp) {
+		if (c->status == PROBE)
+			free_client(c);
+	}
+}
+
+static int cmp(const void *_a, const void *_b)
+{
+	const struct client *a = _a;
+	const struct client *b = _b;
+	long tot_a = a->total;
+	long tot_b = b->total;
+
+	if (a->status != ALIVE || a->samples < 2)
+		tot_a = -1;
+	if (b->status != ALIVE || b->samples < 2)
+		tot_b = -1;
+
+	if (tot_a == tot_b)
+		return a->pid - b->pid;
+	else
+		return -(tot_a - tot_b);
+}
+
 static const char *bars[] = { " ", "▏", "▎", "▍", "▌", "▋", "▊", "▉", "█" };
 
+static void n_spaces(const unsigned int n)
+{
+	unsigned int i;
+
+	for (i = 0; i < n; i++)
+		putchar(' ');
+}
+
 static void
 print_percentage_bar(double percent, int max_len)
 {
@@ -422,8 +636,7 @@  print_percentage_bar(double percent, int max_len)
 	if (i)
 		printf("%s", bars[i]);
 
-	for (i = 0; i < (max_len - 2 - (bar_len + 7) / 8); i++)
-		putchar(' ');
+	n_spaces(max_len - 2 - (bar_len + 7) / 8);
 
 	putchar('|');
 }
@@ -500,16 +713,21 @@  int main(int argc, char **argv)
 		engines->load_exp[i] = exp(-period / load_period[i]);
 
 	pmu_sample(engines);
+	scan(engines);
 
 	for (;;) {
 		double t, freq[2], irq, rc6, power;
 		double qd = 0;
 		int lines = 0;
+		struct client *c;
+		unsigned int len, engine_w;
 		unsigned int j;
 
 		usleep(period_us);
 
 		pmu_sample(engines);
+		scan(engines);
+
 		t = (double)(engines->ts.cur - engines->ts.prev) / 1e9;
 
 		printf("\033[H\033[J");
@@ -561,8 +779,6 @@  int main(int argc, char **argv)
 
 		for (i = 0; i < engines->num_engines && lines < con_h; i++) {
 			struct engine *engine = engine_ptr(engines, i);
-			unsigned int max_w = con_w - 1;
-			unsigned int len;
 			double val[2];
 			char buf[128];
 
@@ -579,7 +795,7 @@  int main(int argc, char **argv)
 				      engine->qd[0],
 				      engine->qd[1],
 				      engine->qd[2]);
-			print_percentage_bar(val[0], max_w - len);
+			print_percentage_bar(val[0], con_w - 1 - len);
 
 			printf("%s\n", buf);
 
@@ -587,6 +803,48 @@  int main(int argc, char **argv)
 		}
 
 		printf("\n");
+
+		printf("\033[7m");
+		len = printf("%5s%16s", "PID", "NAME");
+		engine_w = (con_w - len) / engines->num_engines;
+		for (i = 0; i < engines->num_engines && lines < con_h; i++) {
+			struct engine *engine = engine_ptr(engines, i);
+			unsigned int pad = (engine_w - strlen(engine->name)) / 2;
+
+			n_spaces(pad);
+			printf("%s", engine->name);
+			n_spaces(engine_w - pad - strlen(engine->name));
+			len += pad + strlen(engine->name) +
+			       (engine_w - pad - strlen(engine->name));
+		}
+		n_spaces(con_w - len);
+		printf("\033[0m\n");
+		lines++;
+
+		qsort(clients, num_clients, sizeof(*c), cmp);
+
+		for_each_client(c, i) {
+			if (lines > con_h)
+				break;
+
+			assert(c->status != PROBE);
+			if (c->status != ALIVE || c->samples < 2)
+				break;
+
+			printf("%5u%16s ", c->pid, c->name);
+
+			for (i = 0; i < engines->num_engines; i++) {
+				double pct;
+
+				pct = (double)c->val[i] / period_us / 1e3 * 100;
+
+				print_percentage_bar(pct, engine_w);
+			}
+
+			putchar('\n');
+			lines++;
+		}
+
 	}
 
 	return 0;