Add basic backlight percentage support

[slstatus.git] / components / cpu.c

diff --git a/components/cpu.c b/components/cpu.c
index 60a7991..ecd45a6 100644 (file)
--- a/components/cpu.c
+++ b/components/cpu.c
@@ -6,20 +6,26 @@
 #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(freq * 1000, 1000);
        }
 
        const char *
        cpu_perc(void)
        {
-               static int valid;
                static long double a[7];
                long double b[7];
 
@@ -29,8 +35,7 @@
                           &a[0], &a[1], &a[2], &a[3], &a[4], &a[5], &a[6]) != 7) {
                        return NULL;
                }
-               if (!valid) {
-                       valid = 1;
+               if (b[0] == 0) {
                        return NULL;
                }
 
@@ -56,19 +61,19 @@
 
                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((size_t)freq * 1000 * 1000, 1000);
        }
 
        const char *
        cpu_perc(void)
        {
                int mib[2];
-               static int valid;
                static long int a[CPUSTATES];
                long int b[CPUSTATES];
                size_t size;
@@ -83,8 +88,7 @@
                        warn("sysctl 'KERN_CPTIME':");
                        return NULL;
                }
-               if (!valid) {
-                       valid = 1;
+               if (b[0] == 0) {
                        return NULL;
                }