Implement scaling for cpu_freq
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46c4540dd2
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@ -6,14 +6,21 @@
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#include "../util.h"
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#if defined(__linux__)
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#include <inttypes.h>
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#include <stdint.h>
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const char *
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cpu_freq(void)
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{
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int freq;
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uint64_t freq;
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return (pscanf("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq",
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"%d", &freq) == 1) ?
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bprintf("%d", (freq + 500) / 1000) : NULL;
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/* in kHz */
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if (pscanf("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq",
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"%"SCNu64, &freq) != 1) {
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return NULL;
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}
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return fmt_human_10(freq * 1000, "Hz");
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}
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const char *
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@ -56,12 +63,13 @@
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size = sizeof(freq);
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/* in MHz */
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if (sysctl(mib, 2, &freq, &size, NULL, 0) < 0) {
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warn("sysctl 'HW_CPUSPEED':");
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return NULL;
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}
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return bprintf("%d", freq);
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return fmt_human_10((size_t)freq * 1000 * 1000, "Hz");
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}
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const char *
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