Implement scaling for cpu_freq
Aaron Marcher me@drkhsh.at
Sat, 19 May 2018 23:58:14 +0200
1 files changed,
13 insertions(+),
5 deletions(-)
jump to
M
components/cpu.c
→
components/cpu.c
@@ -6,14 +6,21 @@
#include "../util.h" #if defined(__linux__) + #include <inttypes.h> + #include <stdint.h> + const char * cpu_freq(void) { - int freq; + uint64_t freq; + + /* in kHz */ + if (pscanf("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq", + "%"SCNu64, &freq) != 1) { + return NULL; + } - return (pscanf("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq", - "%d", &freq) == 1) ? - bprintf("%d", (freq + 500) / 1000) : NULL; + return fmt_human_10(freq * 1000, "Hz"); } const char *@@ -56,12 +63,13 @@ mib[1] = HW_CPUSPEED;
size = sizeof(freq); + /* in MHz */ if (sysctl(mib, 2, &freq, &size, NULL, 0) < 0) { warn("sysctl 'HW_CPUSPEED':"); return NULL; } - return bprintf("%d", freq); + return fmt_human_10((size_t)freq * 1000 * 1000, "Hz"); } const char *