fix #1493: [Linux] cpu_freq(): handle the case where /sys/devices/sys…

…tem/cpu/cpufreq/ exists but is empty.
giampaolo · Apr 26, 2019 · c2b333b · c2b333b
1 parent 9314d26
commit c2b333b
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diff --git a/HISTORY.rst b/HISTORY.rst
@@ -41,6 +41,8 @@
   involved into oneshot() context.
 - 1491_: [SunOS] net_if_addrs(): free() ifap struct on error.  (patch by
   Agnewee)
+- 1493_: [Linux] cpu_freq(): handle the case where
+  /sys/devices/system/cpu/cpufreq/ exists but is empty.
 
 5.6.1
 =====

diff --git a/psutil/_pslinux.py b/psutil/_pslinux.py
@@ -668,7 +668,7 @@ def cpu_stats():
         ctx_switches, interrupts, soft_interrupts, syscalls)
 
 
-if os.path.exists("/sys/devices/system/cpu/cpufreq") or \
+if os.path.exists("/sys/devices/system/cpu/cpufreq/policy0") or \
         os.path.exists("/sys/devices/system/cpu/cpu0/cpufreq"):
     def cpu_freq():
         """Return frequency metrics for all CPUs.