tools/power turbostat: Print cpuidle information (abdcbdb2) · Commits · 戴 / test

tools/power/x86/turbostat/turbostat.c

+26 −0

Original line number	Diff line number	Diff line
		@@ -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",