tools/power/x86/intel-speed-select: Add check for CascadeLake-N models (1c1d935c) · Commits · 戴 / test

tools/power/x86/intel-speed-select/isst-config.c

+41 −2

Original line number	Diff line number	Diff line
		@@ -23,6 +23,7 @@ static int debug_flag;
		static FILE *outf;

		static int cpu_model;
		static int cpu_stepping;

		#define MAX_CPUS_IN_ONE_REQ 64
		static short max_target_cpus;
		@@ -72,7 +73,16 @@ void debug_printf(const char *format, ...)
		va_end(args);
		}

		static void update_cpu_model(void)

		int is_clx_n_platform(void)
		{
		if (cpu_model == 0x55)
		if (cpu_stepping == 0x6 \|\| cpu_stepping == 0x7)
		return 1;
		return 0;
		}

		static int update_cpu_model(void)
		{
		unsigned int ebx, ecx, edx;
		unsigned int fms, family;
		@@ -82,6 +92,33 @@ static void update_cpu_model(void)
		cpu_model = (fms >> 4) & 0xf;
		if (family == 6 \|\| family == 0xf)
		cpu_model += ((fms >> 16) & 0xf) << 4;

		cpu_stepping = fms & 0xf;
		/* only three CascadeLake-N models are supported */
		if (is_clx_n_platform()) {
		FILE *fp;
		size_t n = 0;
		char *line = NULL;
		int ret = 1;

		fp = fopen("/proc/cpuinfo", "r");
		if (!fp)
		err(-1, "cannot open /proc/cpuinfo\n");

		while (getline(&line, &n, fp) > 0) {
		if (strstr(line, "model name")) {
		if (strstr(line, "6252N") \|\|
		strstr(line, "6230N") \|\|
		strstr(line, "5218N"))
		ret = 0;
		break;
		}
		}
		free(line);
		fclose(fp);
		return ret;
		}
		return 0;
		}

		/* Open a file, and exit on failure */
		@@ -1956,7 +1993,9 @@ static void cmdline(int argc, char **argv)
		fprintf(stderr, "Feature name and\|or command not specified\n");
		exit(0);
		}
		update_cpu_model();
		ret = update_cpu_model();
		if (ret)
		err(-1, "Invalid CPU model (%d)\n", cpu_model);
		printf("Intel(R) Speed Select Technology\n");
		printf("Executing on CPU model:%d[0x%x]\n", cpu_model, cpu_model);
		set_max_cpu_num();

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