Powertop fails to display frequency stats when cpuidle subsystem is not enabled. Fix it. Signed-off-by: Rajagopal Venkat <rajagopal.venkat(a)linaro.org&gt; --- src/cpu/cpu_linux.cpp | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/cpu/cpu_linux.cpp b/src/cpu/cpu_linux.cpp index d6caf45..b8dbbc5 100644 --- a/src/cpu/cpu_linux.cpp +++ b/src/cpu/cpu_linux.cpp @@ -63,7 +63,7 @@ void cpu_linux::measurement_start(void) dir = opendir(filename); if (!dir) - return; + goto cpufreq; /* For each C-state, there is a stateX directory which * contains a 'usage' and a 'time' (duration) file */ @@ -112,6 +112,7 @@ void cpu_linux::measurement_start(void) } closedir(dir); +cpufreq: last_stamp = 0; for (i = 0; i < children.size(); i++) @@ -149,7 +150,7 @@ void cpu_linux::measurement_end(void) dir = opendir(filename); if (!dir) - return; + goto cpufreq; /* For each C-state, there is a stateX directory which * contains a 'usage' and a 'time' (duration) file */ @@ -188,6 +189,7 @@ void cpu_linux::measurement_end(void) } closedir(dir); +cpufreq: sprintf(filename, "/sys/devices/system/cpu/cpu%i/cpufreq/stats/time_in_state", number); file.open(filename, ios::in); -- 1.7.11.3