1 files changed, 0 insertions, 51 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index fca27b316faf..c7552a78a7be 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -987,57 +987,6 @@ static int write_dir_format(struct feat_fd *ff,
 	return do_write(ff, &data->dir.version, sizeof(data->dir.version));
 }
 
-/*
- * Check whether a CPU is online
- *
- * Returns:
- *     1 -> if CPU is online
- *     0 -> if CPU is offline
- *    -1 -> error case
- */
-int is_cpu_online(unsigned int cpu)
-{
-	char *str;
-	size_t strlen;
-	char buf[256];
-	int status = -1;
-	struct stat statbuf;
-
-	snprintf(buf, sizeof(buf),
-		"/sys/devices/system/cpu/cpu%d", cpu);
-	if (stat(buf, &statbuf) != 0)
-		return 0;
-
-	/*
-	 * Check if /sys/devices/system/cpu/cpux/online file
-	 * exists. Some cases cpu0 won't have online file since
-	 * it is not expected to be turned off generally.
-	 * In kernels without CONFIG_HOTPLUG_CPU, this
-	 * file won't exist
-	 */
-	snprintf(buf, sizeof(buf),
-		"/sys/devices/system/cpu/cpu%d/online", cpu);
-	if (stat(buf, &statbuf) != 0)
-		return 1;
-
-	/*
-	 * Read online file using sysfs__read_str.
-	 * If read or open fails, return -1.
-	 * If read succeeds, return value from file
-	 * which gets stored in "str"
-	 */
-	snprintf(buf, sizeof(buf),
-		"devices/system/cpu/cpu%d/online", cpu);
-
-	if (sysfs__read_str(buf, &str, &strlen) < 0)
-		return status;
-
-	status = atoi(str);
-
-	free(str);
-	return status;
-}
-
 #ifdef HAVE_LIBBPF_SUPPORT
 static int write_bpf_prog_info(struct feat_fd *ff,
 			       struct evlist *evlist __maybe_unused)