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commit 0bc6855741cc9fbdf5c3ffd0d9cb983b0a66f635
parent 46c4540dd2f6181e77b0800a4e007d78d0162487
Author: Aaron Marcher <me@drkhsh.at>
Date:   Sat, 19 May 2018 23:58:14 +0200

Implement scaling for cpu_freq

Diffstat:
components/cpu.c | 18+++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/components/cpu.c b/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 @@ 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 *