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commit 07f66ef7d3e6f3456bcdf7078e1d1a012c36922a
parent 311f1ed9305fbaadc78ecd85c50e3b2df87e5567
Author: lostd <lostd@2f30.org>
Date:   Wed,  2 Nov 2016 16:00:54 +0100

Report frequency of CPU0 in Linux

Diffstat:
Makefile | 3++-
cpu.c | 19+++++++++++++++++++
2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile @@ -13,7 +13,8 @@ CPPFLAGS_OpenBSD = -I/usr/X11R6/include -I/usr/local/include LDFLAGS_OpenBSD = -L/usr/X11R6/lib -L/usr/local/lib CPPFLAGS_Linux = -DPATH_BAT_CAP=\"/sys/class/power_supply/BAT0/capacity\"\ -DPATH_AC_ONLINE=\"/sys/class/power_supply/AC/online\"\ - -DPATH_TEMP=\"/sys/class/hwmon/hwmon0/temp1_input\" + -DPATH_TEMP=\"/sys/class/hwmon/hwmon0/temp1_input\"\ + -DPATH_CPU_FREQ=\"/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq\" CPPFLAGS = $(CPPFLAGS_$(UNAME)) LDFLAGS = $(LDFLAGS_$(UNAME)) LDLIBS = -lX11 diff --git a/cpu.c b/cpu.c @@ -1,3 +1,4 @@ +#include <err.h> #include <stdio.h> #ifdef __OpenBSD__ @@ -17,4 +18,22 @@ cpuread(void *arg, char *buf, size_t len) snprintf(buf, len, "%4dMHz", cpuspeed); return 0; } +#elif __linux__ +int +cpuread(void *arg, char *buf, size_t len) +{ + FILE *fp; + int freq; + + fp = fopen(PATH_CPU_FREQ, "r"); + if (fp == NULL) { + warn("fopen %s", PATH_CPU_FREQ); + return -1; + } + fscanf(fp, "%d", &freq); + fclose(fp); + freq /= 1000; + snprintf(buf, len, "%4dMHz", freq); + return 0; +} #endif