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[SIGAR-61] Alternative to /proc/cpuinfo.MHz

This commit is contained in:
Doug MacEachern 2007-06-28 19:07:29 +00:00
parent 4d218a4cc4
commit de3406cd22
1 changed files with 20 additions and 0 deletions
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20
src/os/linux/linux_sigar.c
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@ -1608,6 +1608,23 @@ static int get_cpu_info(sigar_t *sigar, sigar_cpu_info_t *info,
return found;
}
/* /proc/cpuinfo MHz will change w/ AMD + PowerNow */
static void get_cpuinfo_max_freq(sigar_cpu_info_t *cpu_info, int num)
{
int status;
char max_freq[PATH_MAX];
snprintf(max_freq, sizeof(max_freq),
"/sys/devices/system/cpu/cpu%d"
"/cpufreq/cpuinfo_max_freq", num);
status =
sigar_file2str(max_freq, max_freq, sizeof(max_freq)-1);
if (status == SIGAR_OK) {
cpu_info->mhz = atoi(max_freq) / 1000;
}
}
int sigar_cpu_info_list_get(sigar_t *sigar,
sigar_cpu_info_list_t *cpu_infos)
{
@ -1625,6 +1642,9 @@ int sigar_cpu_info_list_get(sigar_t *sigar,
continue; /* fold logical processors if HT */
}
get_cpuinfo_max_freq(&cpu_infos->data[cpu_infos->number],
cpu_infos->number);
++cpu_infos->number;
SIGAR_CPU_INFO_LIST_GROW(cpu_infos);
}