disable pwm7

hc

2024-05-10 23fa18eaa71266feff7ba8d83022d9e1cc83c65a

 kernel/tools/perf/util/smt.c
..
..
@@ -15,6 +15,9 @@
15
15
 	if (cached)
16
16
 		return cached_result;
17
17
 
18
+	if (sysfs__read_int("devices/system/cpu/smt/active", &cached_result) >= 0)
19
+		goto done;
20
+
18
21
 	ncpu = sysconf(_SC_NPROCESSORS_CONF);
19
22
 	for (cpu = 0; cpu < ncpu; cpu++) {
20
23
 		unsigned long long siblings;
..
..
@@ -23,10 +26,14 @@
23
26
 		char fn[256];
24
27
 
25
28
 		snprintf(fn, sizeof fn,
26
-			"devices/system/cpu/cpu%d/topology/thread_siblings",
27
-			cpu);
28
-		if (sysfs__read_str(fn, &str, &strlen) < 0)
29
-			continue;
29
+			"devices/system/cpu/cpu%d/topology/core_cpus", cpu);
30
+		if (sysfs__read_str(fn, &str, &strlen) < 0) {
31
+			snprintf(fn, sizeof fn,
32
+				"devices/system/cpu/cpu%d/topology/thread_siblings",
33
+				cpu);
34
+			if (sysfs__read_str(fn, &str, &strlen) < 0)
35
+				continue;
36
+		}
30
37
 		/* Entry is hex, but does not have 0x, so need custom parser */
31
38
 		siblings = strtoull(str, NULL, 16);
32
39
 		free(str);
..
..
@@ -38,6 +45,7 @@
38
45
 	}
39
46
 	if (!cached) {
40
47
 		cached_result = 0;
48
+done:
41
49
 		cached = true;
42
50
 	}
43
51
 	return cached_result;