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tools/power turbostat: Print cpuidle information 

Print cpuidle driver and governor.

Originally-by: Antti Laakso <antti.laakso@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown 2020-03-21 00:47:47 -04:00
parent fcaa681c03
commit abdcbdb265
1 changed files with 26 additions and 0 deletions
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26
tools/power/x86/turbostat/turbostat.c
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@ -3503,6 +3503,23 @@ dump_cstate_pstate_config_info(unsigned int family, unsigned int model)
dump_nhm_cst_cfg();
}
static void dump_sysfs_file(char *path)
{
FILE *input;
char cpuidle_buf[64];
input = fopen(path, "r");
if (input == NULL) {
if (debug)
fprintf(outf, "NSFOD %s\n", path);
return;
}
if (!fgets(cpuidle_buf, sizeof(cpuidle_buf), input))
err(1, "%s: failed to read file", path);
fclose(input);
fprintf(outf, "%s: %s", strrchr(path, '/') + 1, cpuidle_buf);
}
static void
dump_sysfs_cstate_config(void)
{
@ -3516,6 +3533,15 @@ dump_sysfs_cstate_config(void)
if (!DO_BIC(BIC_sysfs))
return;
if (access("/sys/devices/system/cpu/cpuidle", R_OK)) {
fprintf(outf, "cpuidle not loaded\n");
return;
}
dump_sysfs_file("/sys/devices/system/cpu/cpuidle/current_driver");
dump_sysfs_file("/sys/devices/system/cpu/cpuidle/current_governor");
dump_sysfs_file("/sys/devices/system/cpu/cpuidle/current_governor_ro");
for (state = 0; state < 10; ++state) {
sprintf(path, "/sys/devices/system/cpu/cpu%d/cpuidle/state%d/name",