---

yaml
---
r: 169743
b: refs/heads/master
c: bfd4511
h: refs/heads/master
i:
  169741: 18f3c4f
  169739: 4b2fa52
  169735: 38e16d1
  169727: bee6342
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 81516c5fc83a13a1d12f466aa7e14f5fd62a63ce
+refs/heads/master: bfd451184d80301d1ae970b1ebffde1e9c6240f9

trunk/tools/perf/builtin-record.c

@@ -307,6 +307,12 @@ static void create_counter(int counter, int cpu, pid_t pid)
 		printf("\n");
 		error("perfcounter syscall returned with %d (%s)\n",
 			fd[nr_cpu][counter], strerror(err));
+
+#if defined(__i386__) || defined(__x86_64__)
+		if (attr->type == PERF_TYPE_HARDWARE && err == EOPNOTSUPP)
+			die("No hardware sampling interrupt available. No APIC? If so then you can boot the kernel with the \"lapic\" boot parameter to force-enable it.\n");
+#endif
+
 		die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
 		exit(-1);
 	}