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.h | 7 ++++++- src/cpu/cpu_linux.cpp | 36 +++++++++++++++++++++++++++--------- 2 files changed, 33 insertions(+), 10 deletions(-) diff --git a/src/cpu/cpu.h b/src/cpu/cpu.h index 4480b11..781e33c 100644 --- a/src/cpu/cpu.h +++ b/src/cpu/cpu.h @@ -159,7 +159,12 @@ extern vector<class abstract_cpu *> all_cpus; class cpu_linux: public abstract_cpu { - void account_freq(uint64_t frequency, uint64_t duration); + void account_freq(uint64_t frequency, uint64_t duration); + void parse_pstates_start(void); + void parse_cstates_start(void); + void parse_pstates_end(void); + void parse_cstates_end(void); + public: virtual void measurement_start(void); virtual void measurement_end(void); diff --git a/src/cpu/cpu_linux.cpp b/src/cpu/cpu_linux.cpp index d6caf45..e7a3d37 100644 --- a/src/cpu/cpu_linux.cpp +++ b/src/cpu/cpu_linux.cpp @@ -47,17 +47,13 @@ static int is_turbo(uint64_t freq, uint64_t max, uint64_t maxmo) return 1; } -void cpu_linux::measurement_start(void) +void cpu_linux::parse_cstates_start(void) { ifstream file; - DIR *dir; struct dirent *entry; char filename[256]; int len; - unsigned int i; - - abstract_cpu::measurement_start(); len = sprintf(filename, "/sys/devices/system/cpu/cpu%i/cpuidle", number); @@ -111,9 +107,16 @@ void cpu_linux::measurement_start(void) } closedir(dir); +} - last_stamp = 0; +void cpu_linux::parse_pstates_start(void) +{ + ifstream file; + char filename[256]; + unsigned int i; + + last_stamp = 0; for (i = 0; i < children.size(); i++) if (children[i]) children[i]->wiggle(); @@ -136,8 +139,14 @@ void cpu_linux::measurement_start(void) account_freq(0, 0); } +void cpu_linux::measurement_start(void) +{ + abstract_cpu::measurement_start(); + parse_cstates_start(); + parse_pstates_start(); +} -void cpu_linux::measurement_end(void) +void cpu_linux::parse_cstates_end(void) { DIR *dir; struct dirent *entry; @@ -187,6 +196,12 @@ void cpu_linux::measurement_end(void) } closedir(dir); +} + +void cpu_linux::parse_pstates_end(void) +{ + char filename[256]; + ifstream file; sprintf(filename, "/sys/devices/system/cpu/cpu%i/cpufreq/stats/time_in_state", number); @@ -216,12 +231,15 @@ void cpu_linux::measurement_end(void) } file.close(); } +} - +void cpu_linux::measurement_end(void) +{ + parse_cstates_end(); + parse_pstates_end(); abstract_cpu::measurement_end(); } - char * cpu_linux::fill_cstate_line(int line_nr, char *buffer, const char *separator) { unsigned int i;