return error if cpufreq's are empty

Signed-off-by: Sergei Semenchuk <pdp.eleven11@gmail.com>
prometheus · Dec 21, 2022 · b9fa528 · b9fa528
1 parent 03da3a1
commit b9fa528
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/sysfs/system_cpu.go b/sysfs/system_cpu.go
@@ -181,6 +181,10 @@ func (fs FS) SystemCpufreq() ([]SystemCPUCpufreqStats, error) {
 		return nil, err
 	}
 
+	if len(systemCpufreq) == 0 {
+		return nil, fmt.Errorf("could not find any cpufreq files: %w", os.ErrNotExist)
+	}
+
 	return systemCpufreq, nil
 }