turbostat.c 57.2 KB
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/*
 * turbostat -- show CPU frequency and C-state residency
 * on modern Intel turbo-capable processors.
 *
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 * Copyright (c) 2012 Intel Corporation.
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 * Len Brown <len.brown@intel.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 */

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#define _GNU_SOURCE
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#include <asm/msr.h>
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#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/resource.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/time.h>
#include <stdlib.h>
#include <dirent.h>
#include <string.h>
#include <ctype.h>
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#include <sched.h>
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char *proc_stat = "/proc/stat";
unsigned int interval_sec = 5;	/* set with -i interval_sec */
unsigned int verbose;		/* set with -v */
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unsigned int rapl_verbose;	/* set with -R */
unsigned int thermal_verbose;	/* set with -T */
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unsigned int summary_only;	/* set with -s */
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unsigned int skip_c0;
unsigned int skip_c1;
unsigned int do_nhm_cstates;
unsigned int do_snb_cstates;
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unsigned int do_c8_c9_c10;
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unsigned int has_aperf;
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unsigned int has_epb;
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unsigned int units = 1000000000;	/* Ghz etc */
unsigned int genuine_intel;
unsigned int has_invariant_tsc;
unsigned int do_nehalem_platform_info;
unsigned int do_nehalem_turbo_ratio_limit;
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unsigned int do_ivt_turbo_ratio_limit;
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unsigned int extra_msr_offset32;
unsigned int extra_msr_offset64;
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unsigned int extra_delta_offset32;
unsigned int extra_delta_offset64;
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int do_smi;
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double bclk;
unsigned int show_pkg;
unsigned int show_core;
unsigned int show_cpu;
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unsigned int show_pkg_only;
unsigned int show_core_only;
char *output_buffer, *outp;
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unsigned int do_rapl;
unsigned int do_dts;
unsigned int do_ptm;
unsigned int tcc_activation_temp;
unsigned int tcc_activation_temp_override;
double rapl_power_units, rapl_energy_units, rapl_time_units;
double rapl_joule_counter_range;

#define RAPL_PKG	(1 << 0)
#define RAPL_CORES	(1 << 1)
#define RAPL_GFX	(1 << 2)
#define RAPL_DRAM	(1 << 3)
#define RAPL_PKG_PERF_STATUS	(1 << 4)
#define RAPL_DRAM_PERF_STATUS	(1 << 5)
#define	TJMAX_DEFAULT	100

#define MAX(a, b) ((a) > (b) ? (a) : (b))
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int aperf_mperf_unstable;
int backwards_count;
char *progname;

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cpu_set_t *cpu_present_set, *cpu_affinity_set;
size_t cpu_present_setsize, cpu_affinity_setsize;

struct thread_data {
	unsigned long long tsc;
	unsigned long long aperf;
	unsigned long long mperf;
	unsigned long long c1;	/* derived */
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	unsigned long long extra_msr64;
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	unsigned long long extra_delta64;
	unsigned long long extra_msr32;
	unsigned long long extra_delta32;
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	unsigned int smi_count;
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	unsigned int cpu_id;
	unsigned int flags;
#define CPU_IS_FIRST_THREAD_IN_CORE	0x2
#define CPU_IS_FIRST_CORE_IN_PACKAGE	0x4
} *thread_even, *thread_odd;

struct core_data {
	unsigned long long c3;
	unsigned long long c6;
	unsigned long long c7;
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	unsigned int core_temp_c;
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	unsigned int core_id;
} *core_even, *core_odd;

struct pkg_data {
	unsigned long long pc2;
	unsigned long long pc3;
	unsigned long long pc6;
	unsigned long long pc7;
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	unsigned long long pc8;
	unsigned long long pc9;
	unsigned long long pc10;
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	unsigned int package_id;
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	unsigned int energy_pkg;	/* MSR_PKG_ENERGY_STATUS */
	unsigned int energy_dram;	/* MSR_DRAM_ENERGY_STATUS */
	unsigned int energy_cores;	/* MSR_PP0_ENERGY_STATUS */
	unsigned int energy_gfx;	/* MSR_PP1_ENERGY_STATUS */
	unsigned int rapl_pkg_perf_status;	/* MSR_PKG_PERF_STATUS */
	unsigned int rapl_dram_perf_status;	/* MSR_DRAM_PERF_STATUS */
	unsigned int pkg_temp_c;

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} *package_even, *package_odd;

#define ODD_COUNTERS thread_odd, core_odd, package_odd
#define EVEN_COUNTERS thread_even, core_even, package_even

#define GET_THREAD(thread_base, thread_no, core_no, pkg_no) \
	(thread_base + (pkg_no) * topo.num_cores_per_pkg * \
		topo.num_threads_per_core + \
		(core_no) * topo.num_threads_per_core + (thread_no))
#define GET_CORE(core_base, core_no, pkg_no) \
	(core_base + (pkg_no) * topo.num_cores_per_pkg + (core_no))
#define GET_PKG(pkg_base, pkg_no) (pkg_base + pkg_no)

struct system_summary {
	struct thread_data threads;
	struct core_data cores;
	struct pkg_data packages;
} sum, average;


struct topo_params {
	int num_packages;
	int num_cpus;
	int num_cores;
	int max_cpu_num;
	int num_cores_per_pkg;
	int num_threads_per_core;
} topo;

struct timeval tv_even, tv_odd, tv_delta;

void setup_all_buffers(void);

int cpu_is_not_present(int cpu)
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{
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	return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
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}
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/*
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 * run func(thread, core, package) in topology order
 * skip non-present cpus
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 */
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int for_all_cpus(int (func)(struct thread_data *, struct core_data *, struct pkg_data *),
	struct thread_data *thread_base, struct core_data *core_base, struct pkg_data *pkg_base)
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{
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	int retval, pkg_no, core_no, thread_no;
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	for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
		for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
			for (thread_no = 0; thread_no <
				topo.num_threads_per_core; ++thread_no) {
				struct thread_data *t;
				struct core_data *c;
				struct pkg_data *p;
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				t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);

				if (cpu_is_not_present(t->cpu_id))
					continue;

				c = GET_CORE(core_base, core_no, pkg_no);
				p = GET_PKG(pkg_base, pkg_no);

				retval = func(t, c, p);
				if (retval)
					return retval;
			}
		}
	}
	return 0;
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}

int cpu_migrate(int cpu)
{
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	CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
	CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set);
	if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1)
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		return -1;
	else
		return 0;
}

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int get_msr(int cpu, off_t offset, unsigned long long *msr)
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{
	ssize_t retval;
	char pathname[32];
	int fd;

	sprintf(pathname, "/dev/cpu/%d/msr", cpu);
	fd = open(pathname, O_RDONLY);
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	if (fd < 0)
		return -1;
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	retval = pread(fd, msr, sizeof *msr, offset);
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	close(fd);
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	if (retval != sizeof *msr) {
		fprintf(stderr, "%s offset 0x%zx read failed\n", pathname, offset);
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		return -1;
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	}
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	return 0;
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}

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void print_header(void)
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{
	if (show_pkg)
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		outp += sprintf(outp, "pk");
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	if (show_pkg)
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		outp += sprintf(outp, " ");
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	if (show_core)
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		outp += sprintf(outp, "cor");
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	if (show_cpu)
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		outp += sprintf(outp, " CPU");
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	if (show_pkg || show_core || show_cpu)
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		outp += sprintf(outp, " ");
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	if (do_nhm_cstates)
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		outp += sprintf(outp, "   %%c0");
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	if (has_aperf)
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		outp += sprintf(outp, "  GHz");
	outp += sprintf(outp, "  TSC");
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	if (do_smi)
		outp += sprintf(outp, " SMI");
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	if (extra_delta_offset32)
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		outp += sprintf(outp, "  count 0x%03X", extra_delta_offset32);
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	if (extra_delta_offset64)
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		outp += sprintf(outp, "  COUNT 0x%03X", extra_delta_offset64);
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	if (extra_msr_offset32)
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		outp += sprintf(outp, "   MSR 0x%03X", extra_msr_offset32);
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	if (extra_msr_offset64)
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		outp += sprintf(outp, "           MSR 0x%03X", extra_msr_offset64);
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	if (do_nhm_cstates)
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		outp += sprintf(outp, "    %%c1");
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	if (do_nhm_cstates)
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		outp += sprintf(outp, "    %%c3");
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	if (do_nhm_cstates)
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		outp += sprintf(outp, "    %%c6");
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	if (do_snb_cstates)
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		outp += sprintf(outp, "    %%c7");
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	if (do_dts)
		outp += sprintf(outp, " CTMP");
	if (do_ptm)
		outp += sprintf(outp, " PTMP");

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	if (do_snb_cstates)
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		outp += sprintf(outp, "   %%pc2");
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	if (do_nhm_cstates)
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		outp += sprintf(outp, "   %%pc3");
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	if (do_nhm_cstates)
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		outp += sprintf(outp, "   %%pc6");
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	if (do_snb_cstates)
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		outp += sprintf(outp, "   %%pc7");
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	if (do_c8_c9_c10) {
		outp += sprintf(outp, "   %%pc8");
		outp += sprintf(outp, "   %%pc9");
		outp += sprintf(outp, "  %%pc10");
	}
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	if (do_rapl & RAPL_PKG)
		outp += sprintf(outp, "  Pkg_W");
	if (do_rapl & RAPL_CORES)
		outp += sprintf(outp, "  Cor_W");
	if (do_rapl & RAPL_GFX)
		outp += sprintf(outp, " GFX_W");
	if (do_rapl & RAPL_DRAM)
		outp += sprintf(outp, " RAM_W");
	if (do_rapl & RAPL_PKG_PERF_STATUS)
		outp += sprintf(outp, " PKG_%%");
	if (do_rapl & RAPL_DRAM_PERF_STATUS)
		outp += sprintf(outp, " RAM_%%");

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	outp += sprintf(outp, "\n");
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}

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int dump_counters(struct thread_data *t, struct core_data *c,
	struct pkg_data *p)
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{
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	fprintf(stderr, "t %p, c %p, p %p\n", t, c, p);

	if (t) {
		fprintf(stderr, "CPU: %d flags 0x%x\n", t->cpu_id, t->flags);
		fprintf(stderr, "TSC: %016llX\n", t->tsc);
		fprintf(stderr, "aperf: %016llX\n", t->aperf);
		fprintf(stderr, "mperf: %016llX\n", t->mperf);
		fprintf(stderr, "c1: %016llX\n", t->c1);
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		fprintf(stderr, "msr0x%x: %08llX\n",
			extra_delta_offset32, t->extra_delta32);
		fprintf(stderr, "msr0x%x: %016llX\n",
			extra_delta_offset64, t->extra_delta64);
		fprintf(stderr, "msr0x%x: %08llX\n",
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			extra_msr_offset32, t->extra_msr32);
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		fprintf(stderr, "msr0x%x: %016llX\n",
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			extra_msr_offset64, t->extra_msr64);
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		if (do_smi)
			fprintf(stderr, "SMI: %08X\n", t->smi_count);
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	}
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	if (c) {
		fprintf(stderr, "core: %d\n", c->core_id);
		fprintf(stderr, "c3: %016llX\n", c->c3);
		fprintf(stderr, "c6: %016llX\n", c->c6);
		fprintf(stderr, "c7: %016llX\n", c->c7);
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		fprintf(stderr, "DTS: %dC\n", c->core_temp_c);
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	}
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	if (p) {
		fprintf(stderr, "package: %d\n", p->package_id);
		fprintf(stderr, "pc2: %016llX\n", p->pc2);
		fprintf(stderr, "pc3: %016llX\n", p->pc3);
		fprintf(stderr, "pc6: %016llX\n", p->pc6);
		fprintf(stderr, "pc7: %016llX\n", p->pc7);
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		fprintf(stderr, "pc8: %016llX\n", p->pc8);
		fprintf(stderr, "pc9: %016llX\n", p->pc9);
		fprintf(stderr, "pc10: %016llX\n", p->pc10);
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		fprintf(stderr, "Joules PKG: %0X\n", p->energy_pkg);
		fprintf(stderr, "Joules COR: %0X\n", p->energy_cores);
		fprintf(stderr, "Joules GFX: %0X\n", p->energy_gfx);
		fprintf(stderr, "Joules RAM: %0X\n", p->energy_dram);
		fprintf(stderr, "Throttle PKG: %0X\n", p->rapl_pkg_perf_status);
		fprintf(stderr, "Throttle RAM: %0X\n", p->rapl_dram_perf_status);
		fprintf(stderr, "PTM: %dC\n", p->pkg_temp_c);
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	}
	return 0;
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}

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/*
 * column formatting convention & formats
 * package: "pk" 2 columns %2d
 * core: "cor" 3 columns %3d
 * CPU: "CPU" 3 columns %3d
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 * Pkg_W: %6.2
 * Cor_W: %6.2
 * GFX_W: %5.2
 * RAM_W: %5.2
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 * GHz: "GHz" 3 columns %3.2
 * TSC: "TSC" 3 columns %3.2
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 * SMI: "SMI" 4 columns %4d
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 * percentage " %pc3" %6.2
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 * Perf Status percentage: %5.2
 * "CTMP" 4 columns %4d
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 */
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int format_counters(struct thread_data *t, struct core_data *c,
	struct pkg_data *p)
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{
	double interval_float;
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	char *fmt5, *fmt6;
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	 /* if showing only 1st thread in core and this isn't one, bail out */
	if (show_core_only && !(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
		return 0;

	 /* if showing only 1st thread in pkg and this isn't one, bail out */
	if (show_pkg_only && !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
		return 0;

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	interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;

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	/* topo columns, print blanks on 1st (average) line */
	if (t == &average.threads) {
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		if (show_pkg)
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			outp += sprintf(outp, "  ");
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		if (show_pkg && show_core)
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			outp += sprintf(outp, " ");
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		if (show_core)
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			outp += sprintf(outp, "   ");
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		if (show_cpu)
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			outp += sprintf(outp, " " "   ");
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	} else {
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		if (show_pkg) {
			if (p)
				outp += sprintf(outp, "%2d", p->package_id);
			else
				outp += sprintf(outp, "  ");
		}
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		if (show_pkg && show_core)
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			outp += sprintf(outp, " ");
		if (show_core) {
			if (c)
				outp += sprintf(outp, "%3d", c->core_id);
			else
				outp += sprintf(outp, "   ");
		}
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		if (show_cpu)
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			outp += sprintf(outp, " %3d", t->cpu_id);
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	}
	/* %c0 */
	if (do_nhm_cstates) {
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		if (show_pkg || show_core || show_cpu)
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			outp += sprintf(outp, " ");
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		if (!skip_c0)
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			outp += sprintf(outp, "%6.2f", 100.0 * t->mperf/t->tsc);
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		else
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			outp += sprintf(outp, "  ****");
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	}

	/* GHz */
	if (has_aperf) {
		if (!aperf_mperf_unstable) {
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			outp += sprintf(outp, " %3.2f",
				1.0 * t->tsc / units * t->aperf /
				t->mperf / interval_float);
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		} else {
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			if (t->aperf > t->tsc || t->mperf > t->tsc) {
				outp += sprintf(outp, " ***");
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			} else {
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				outp += sprintf(outp, "%3.1f*",
					1.0 * t->tsc /
					units * t->aperf /
					t->mperf / interval_float);
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			}
		}
	}

	/* TSC */
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	outp += sprintf(outp, "%5.2f", 1.0 * t->tsc/units/interval_float);
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	/* SMI */
	if (do_smi)
		outp += sprintf(outp, "%4d", t->smi_count);

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	/* delta */
	if (extra_delta_offset32)
		outp += sprintf(outp, "  %11llu", t->extra_delta32);

	/* DELTA */
	if (extra_delta_offset64)
		outp += sprintf(outp, "  %11llu", t->extra_delta64);
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	/* msr */
	if (extra_msr_offset32)
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		outp += sprintf(outp, "  0x%08llx", t->extra_msr32);
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	/* MSR */
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	if (extra_msr_offset64)
		outp += sprintf(outp, "  0x%016llx", t->extra_msr64);
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	if (do_nhm_cstates) {
		if (!skip_c1)
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			outp += sprintf(outp, " %6.2f", 100.0 * t->c1/t->tsc);
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		else
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			outp += sprintf(outp, "  ****");
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	}
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	/* print per-core data only for 1st thread in core */
	if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
		goto done;

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	if (do_nhm_cstates)
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		outp += sprintf(outp, " %6.2f", 100.0 * c->c3/t->tsc);
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	if (do_nhm_cstates)
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		outp += sprintf(outp, " %6.2f", 100.0 * c->c6/t->tsc);
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	if (do_snb_cstates)
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		outp += sprintf(outp, " %6.2f", 100.0 * c->c7/t->tsc);

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	if (do_dts)
		outp += sprintf(outp, " %4d", c->core_temp_c);

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	/* print per-package data only for 1st core in package */
	if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
		goto done;

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	if (do_ptm)
		outp += sprintf(outp, " %4d", p->pkg_temp_c);

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	if (do_snb_cstates)
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		outp += sprintf(outp, " %6.2f", 100.0 * p->pc2/t->tsc);
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	if (do_nhm_cstates)
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		outp += sprintf(outp, " %6.2f", 100.0 * p->pc3/t->tsc);
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	if (do_nhm_cstates)
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		outp += sprintf(outp, " %6.2f", 100.0 * p->pc6/t->tsc);
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	if (do_snb_cstates)
507
		outp += sprintf(outp, " %6.2f", 100.0 * p->pc7/t->tsc);
508 509 510 511 512
	if (do_c8_c9_c10) {
		outp += sprintf(outp, " %6.2f", 100.0 * p->pc8/t->tsc);
		outp += sprintf(outp, " %6.2f", 100.0 * p->pc9/t->tsc);
		outp += sprintf(outp, " %6.2f", 100.0 * p->pc10/t->tsc);
	}
513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538

	/*
 	 * If measurement interval exceeds minimum RAPL Joule Counter range,
 	 * indicate that results are suspect by printing "**" in fraction place.
 	 */
	if (interval_float < rapl_joule_counter_range) {
		fmt5 = " %5.2f";
		fmt6 = " %6.2f";
	} else {
		fmt5 = " %3.0f**";
		fmt6 = " %4.0f**";
	}

	if (do_rapl & RAPL_PKG)
		outp += sprintf(outp, fmt6, p->energy_pkg * rapl_energy_units / interval_float);
	if (do_rapl & RAPL_CORES)
		outp += sprintf(outp, fmt6, p->energy_cores * rapl_energy_units / interval_float);
	if (do_rapl & RAPL_GFX)
		outp += sprintf(outp, fmt5, p->energy_gfx * rapl_energy_units / interval_float); 
	if (do_rapl & RAPL_DRAM)
		outp += sprintf(outp, fmt5, p->energy_dram * rapl_energy_units / interval_float);
	if (do_rapl & RAPL_PKG_PERF_STATUS )
		outp += sprintf(outp, fmt5, 100.0 * p->rapl_pkg_perf_status * rapl_time_units / interval_float);
	if (do_rapl & RAPL_DRAM_PERF_STATUS )
		outp += sprintf(outp, fmt5, 100.0 * p->rapl_dram_perf_status * rapl_time_units / interval_float);

539 540 541 542
done:
	outp += sprintf(outp, "\n");

	return 0;
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}

545 546 547
void flush_stdout()
{
	fputs(output_buffer, stdout);
548
	fflush(stdout);
549 550 551 552 553 554 555 556
	outp = output_buffer;
}
void flush_stderr()
{
	fputs(output_buffer, stderr);
	outp = output_buffer;
}
void format_all_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
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{
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	static int printed;
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	if (!printed || !summary_only)
		print_header();
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563 564 565
	if (topo.num_cpus > 1)
		format_counters(&average.threads, &average.cores,
			&average.packages);
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	printed = 1;

	if (summary_only)
		return;

572
	for_all_cpus(format_counters, t, c, p);
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}

575 576 577 578 579 580 581
#define DELTA_WRAP32(new, old)			\
	if (new > old) {			\
		old = new - old;		\
	} else {				\
		old = 0x100000000 + new - old;	\
	}

582 583 584 585 586 587 588
void
delta_package(struct pkg_data *new, struct pkg_data *old)
{
	old->pc2 = new->pc2 - old->pc2;
	old->pc3 = new->pc3 - old->pc3;
	old->pc6 = new->pc6 - old->pc6;
	old->pc7 = new->pc7 - old->pc7;
589 590 591
	old->pc8 = new->pc8 - old->pc8;
	old->pc9 = new->pc9 - old->pc9;
	old->pc10 = new->pc10 - old->pc10;
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	old->pkg_temp_c = new->pkg_temp_c;

	DELTA_WRAP32(new->energy_pkg, old->energy_pkg);
	DELTA_WRAP32(new->energy_cores, old->energy_cores);
	DELTA_WRAP32(new->energy_gfx, old->energy_gfx);
	DELTA_WRAP32(new->energy_dram, old->energy_dram);
	DELTA_WRAP32(new->rapl_pkg_perf_status, old->rapl_pkg_perf_status);
	DELTA_WRAP32(new->rapl_dram_perf_status, old->rapl_dram_perf_status);
600
}
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602 603
void
delta_core(struct core_data *new, struct core_data *old)
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{
605 606 607
	old->c3 = new->c3 - old->c3;
	old->c6 = new->c6 - old->c6;
	old->c7 = new->c7 - old->c7;
608
	old->core_temp_c = new->core_temp_c;
609
}
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611 612 613
/*
 * old = new - old
 */
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void
delta_thread(struct thread_data *new, struct thread_data *old,
	struct core_data *core_delta)
{
	old->tsc = new->tsc - old->tsc;

	/* check for TSC < 1 Mcycles over interval */
	if (old->tsc < (1000 * 1000)) {
		fprintf(stderr, "Insanely slow TSC rate, TSC stops in idle?\n");
		fprintf(stderr, "You can disable all c-states by booting with \"idle=poll\"\n");
		fprintf(stderr, "or just the deep ones with \"processor.max_cstate=1\"\n");
		exit(-3);
	}
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628
	old->c1 = new->c1 - old->c1;
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630 631 632 633
	if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
		old->aperf = new->aperf - old->aperf;
		old->mperf = new->mperf - old->mperf;
	} else {
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635 636 637 638
		if (!aperf_mperf_unstable) {
			fprintf(stderr, "%s: APERF or MPERF went backwards *\n", progname);
			fprintf(stderr, "* Frequency results do not cover entire interval *\n");
			fprintf(stderr, "* fix this by running Linux-2.6.30 or later *\n");
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640
			aperf_mperf_unstable = 1;
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		}
		/*
643 644
		 * mperf delta is likely a huge "positive" number
		 * can not use it for calculating c0 time
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		 */
646 647 648
		skip_c0 = 1;
		skip_c1 = 1;
	}
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651
	/*
652 653
	 * As counter collection is not atomic,
	 * it is possible for mperf's non-halted cycles + idle states
654 655
	 * to exceed TSC's all cycles: show c1 = 0% in that case.
	 */
656
	if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
657 658 659 660 661 662
		old->c1 = 0;
	else {
		/* normal case, derive c1 */
		old->c1 = old->tsc - old->mperf - core_delta->c3
				- core_delta->c6 - core_delta->c7;
	}
663

664
	if (old->mperf == 0) {
665
		if (verbose > 1) fprintf(stderr, "cpu%d MPERF 0!\n", old->cpu_id);
666
		old->mperf = 1;	/* divide by 0 protection */
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	}
668

669 670 671 672 673
	old->extra_delta32 = new->extra_delta32 - old->extra_delta32;
	old->extra_delta32 &= 0xFFFFFFFF;

	old->extra_delta64 = new->extra_delta64 - old->extra_delta64;

674
	/*
675
	 * Extra MSR is just a snapshot, simply copy latest w/o subtracting
676
	 */
677 678
	old->extra_msr32 = new->extra_msr32;
	old->extra_msr64 = new->extra_msr64;
679 680 681

	if (do_smi)
		old->smi_count = new->smi_count - old->smi_count;
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}

int delta_cpu(struct thread_data *t, struct core_data *c,
	struct pkg_data *p, struct thread_data *t2,
	struct core_data *c2, struct pkg_data *p2)
{
	/* calculate core delta only for 1st thread in core */
	if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
		delta_core(c, c2);

	/* always calculate thread delta */
	delta_thread(t, t2, c2);	/* c2 is core delta */

	/* calculate package delta only for 1st core in package */
	if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
		delta_package(p, p2);

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	return 0;
}

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void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
{
	t->tsc = 0;
	t->aperf = 0;
	t->mperf = 0;
	t->c1 = 0;

709
	t->smi_count = 0;
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	t->extra_delta32 = 0;
	t->extra_delta64 = 0;

713 714 715 716 717 718
	/* tells format_counters to dump all fields from this set */
	t->flags = CPU_IS_FIRST_THREAD_IN_CORE | CPU_IS_FIRST_CORE_IN_PACKAGE;

	c->c3 = 0;
	c->c6 = 0;
	c->c7 = 0;
719
	c->core_temp_c = 0;
720 721 722 723 724

	p->pc2 = 0;
	p->pc3 = 0;
	p->pc6 = 0;
	p->pc7 = 0;
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	p->pc8 = 0;
	p->pc9 = 0;
	p->pc10 = 0;
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	p->energy_pkg = 0;
	p->energy_dram = 0;
	p->energy_cores = 0;
	p->energy_gfx = 0;
	p->rapl_pkg_perf_status = 0;
	p->rapl_dram_perf_status = 0;
	p->pkg_temp_c = 0;
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}
int sum_counters(struct thread_data *t, struct core_data *c,
	struct pkg_data *p)
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{
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	average.threads.tsc += t->tsc;
	average.threads.aperf += t->aperf;
	average.threads.mperf += t->mperf;
	average.threads.c1 += t->c1;
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	average.threads.extra_delta32 += t->extra_delta32;
	average.threads.extra_delta64 += t->extra_delta64;

748 749 750
	/* sum per-core values only for 1st thread in core */
	if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
		return 0;
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752 753 754 755
	average.cores.c3 += c->c3;
	average.cores.c6 += c->c6;
	average.cores.c7 += c->c7;

756 757
	average.cores.core_temp_c = MAX(average.cores.core_temp_c, c->core_temp_c);

758 759 760 761 762 763 764 765
	/* sum per-pkg values only for 1st core in pkg */
	if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
		return 0;

	average.packages.pc2 += p->pc2;
	average.packages.pc3 += p->pc3;
	average.packages.pc6 += p->pc6;
	average.packages.pc7 += p->pc7;
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	average.packages.pc8 += p->pc8;
	average.packages.pc9 += p->pc9;
	average.packages.pc10 += p->pc10;
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770 771 772 773 774 775 776 777 778
	average.packages.energy_pkg += p->energy_pkg;
	average.packages.energy_dram += p->energy_dram;
	average.packages.energy_cores += p->energy_cores;
	average.packages.energy_gfx += p->energy_gfx;

	average.packages.pkg_temp_c = MAX(average.packages.pkg_temp_c, p->pkg_temp_c);

	average.packages.rapl_pkg_perf_status += p->rapl_pkg_perf_status;
	average.packages.rapl_dram_perf_status += p->rapl_dram_perf_status;
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	return 0;
}
/*
 * sum the counters for all cpus in the system
 * compute the weighted average
 */
void compute_average(struct thread_data *t, struct core_data *c,
	struct pkg_data *p)
{
	clear_counters(&average.threads, &average.cores, &average.packages);

	for_all_cpus(sum_counters, t, c, p);

	average.threads.tsc /= topo.num_cpus;
	average.threads.aperf /= topo.num_cpus;
	average.threads.mperf /= topo.num_cpus;
	average.threads.c1 /= topo.num_cpus;

797 798 799 800 801
	average.threads.extra_delta32 /= topo.num_cpus;
	average.threads.extra_delta32 &= 0xFFFFFFFF;

	average.threads.extra_delta64 /= topo.num_cpus;

802 803 804 805 806 807 808 809
	average.cores.c3 /= topo.num_cores;
	average.cores.c6 /= topo.num_cores;
	average.cores.c7 /= topo.num_cores;

	average.packages.pc2 /= topo.num_packages;
	average.packages.pc3 /= topo.num_packages;
	average.packages.pc6 /= topo.num_packages;
	average.packages.pc7 /= topo.num_packages;
810 811 812 813

	average.packages.pc8 /= topo.num_packages;
	average.packages.pc9 /= topo.num_packages;
	average.packages.pc10 /= topo.num_packages;
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}

816
static unsigned long long rdtsc(void)
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{
818
	unsigned int low, high;
819

820
	asm volatile("rdtsc" : "=a" (low), "=d" (high));
821

822 823
	return low | ((unsigned long long)high) << 32;
}
824 825


826 827 828 829 830 831 832 833
/*
 * get_counters(...)
 * migrate to cpu
 * acquire and record local counters for that cpu
 */
int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
{
	int cpu = t->cpu_id;
834
	unsigned long long msr;
835

836 837
	if (cpu_migrate(cpu)) {
		fprintf(stderr, "Could not migrate to CPU %d\n", cpu);
838
		return -1;
839
	}
840

841 842 843
	t->tsc = rdtsc();	/* we are running on local CPU of interest */

	if (has_aperf) {
844
		if (get_msr(cpu, MSR_IA32_APERF, &t->aperf))
845
			return -3;
846
		if (get_msr(cpu, MSR_IA32_MPERF, &t->mperf))
847 848 849
			return -4;
	}

850 851 852 853 854
	if (do_smi) {
		if (get_msr(cpu, MSR_SMI_COUNT, &msr))
			return -5;
		t->smi_count = msr & 0xFFFFFFFF;
	}
855
	if (extra_delta_offset32) {
856
		if (get_msr(cpu, extra_delta_offset32, &msr))
857
			return -5;
858
		t->extra_delta32 = msr & 0xFFFFFFFF;
859 860 861 862
	}

	if (extra_delta_offset64)
		if (get_msr(cpu, extra_delta_offset64, &t->extra_delta64))
863 864
			return -5;

865
	if (extra_msr_offset32) {
866
		if (get_msr(cpu, extra_msr_offset32, &msr))
867
			return -5;
868
		t->extra_msr32 = msr & 0xFFFFFFFF;
869 870
	}

871 872
	if (extra_msr_offset64)
		if (get_msr(cpu, extra_msr_offset64, &t->extra_msr64))
873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889
			return -5;

	/* collect core counters only for 1st thread in core */
	if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
		return 0;

	if (do_nhm_cstates) {
		if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
			return -6;
		if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
			return -7;
	}

	if (do_snb_cstates)
		if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7))
			return -8;

890 891 892 893 894 895 896
	if (do_dts) {
		if (get_msr(cpu, MSR_IA32_THERM_STATUS, &msr))
			return -9;
		c->core_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
	}


897 898 899 900 901 902 903 904 905 906 907 908 909 910 911
	/* collect package counters only for 1st core in package */
	if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
		return 0;

	if (do_nhm_cstates) {
		if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
			return -9;
		if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
			return -10;
	}
	if (do_snb_cstates) {
		if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2))
			return -11;
		if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7))
			return -12;
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	}
913 914 915 916 917 918 919 920
	if (do_c8_c9_c10) {
		if (get_msr(cpu, MSR_PKG_C8_RESIDENCY, &p->pc8))
			return -13;
		if (get_msr(cpu, MSR_PKG_C9_RESIDENCY, &p->pc9))
			return -13;
		if (get_msr(cpu, MSR_PKG_C10_RESIDENCY, &p->pc10))
			return -13;
	}
921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955
	if (do_rapl & RAPL_PKG) {
		if (get_msr(cpu, MSR_PKG_ENERGY_STATUS, &msr))
			return -13;
		p->energy_pkg = msr & 0xFFFFFFFF;
	}
	if (do_rapl & RAPL_CORES) {
		if (get_msr(cpu, MSR_PP0_ENERGY_STATUS, &msr))
			return -14;
		p->energy_cores = msr & 0xFFFFFFFF;
	}
	if (do_rapl & RAPL_DRAM) {
		if (get_msr(cpu, MSR_DRAM_ENERGY_STATUS, &msr))
			return -15;
		p->energy_dram = msr & 0xFFFFFFFF;
	}
	if (do_rapl & RAPL_GFX) {
		if (get_msr(cpu, MSR_PP1_ENERGY_STATUS, &msr))
			return -16;
		p->energy_gfx = msr & 0xFFFFFFFF;
	}
	if (do_rapl & RAPL_PKG_PERF_STATUS) {
		if (get_msr(cpu, MSR_PKG_PERF_STATUS, &msr))
			return -16;
		p->rapl_pkg_perf_status = msr & 0xFFFFFFFF;
	}
	if (do_rapl & RAPL_DRAM_PERF_STATUS) {
		if (get_msr(cpu, MSR_DRAM_PERF_STATUS, &msr))
			return -16;
		p->rapl_dram_perf_status = msr & 0xFFFFFFFF;
	}
	if (do_ptm) {
		if (get_msr(cpu, MSR_IA32_PACKAGE_THERM_STATUS, &msr))
			return -17;
		p->pkg_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
	}
956
	return 0;
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}

959
void print_verbose_header(void)
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{
	unsigned long long msr;
	unsigned int ratio;

	if (!do_nehalem_platform_info)
		return;

967
	get_msr(0, MSR_NHM_PLATFORM_INFO, &msr);
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969
	fprintf(stderr, "cpu0: MSR_NHM_PLATFORM_INFO: 0x%08llx\n", msr);
970

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	ratio = (msr >> 40) & 0xFF;
	fprintf(stderr, "%d * %.0f = %.0f MHz max efficiency\n",
		ratio, bclk, ratio * bclk);

	ratio = (msr >> 8) & 0xFF;
	fprintf(stderr, "%d * %.0f = %.0f MHz TSC frequency\n",
		ratio, bclk, ratio * bclk);

979 980 981 982
	get_msr(0, MSR_IA32_POWER_CTL, &msr);
	fprintf(stderr, "cpu0: MSR_IA32_POWER_CTL: 0x%08llx (C1E: %sabled)\n",
		msr, msr & 0x2 ? "EN" : "DIS");

983 984 985 986 987
	if (!do_ivt_turbo_ratio_limit)
		goto print_nhm_turbo_ratio_limits;

	get_msr(0, MSR_IVT_TURBO_RATIO_LIMIT, &msr);

988
	fprintf(stderr, "cpu0: MSR_IVT_TURBO_RATIO_LIMIT: 0x%08llx\n", msr);
989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030

	ratio = (msr >> 56) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 16 active cores\n",
			ratio, bclk, ratio * bclk);

	ratio = (msr >> 48) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 15 active cores\n",
			ratio, bclk, ratio * bclk);

	ratio = (msr >> 40) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 14 active cores\n",
			ratio, bclk, ratio * bclk);

	ratio = (msr >> 32) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 13 active cores\n",
			ratio, bclk, ratio * bclk);

	ratio = (msr >> 24) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 12 active cores\n",
			ratio, bclk, ratio * bclk);

	ratio = (msr >> 16) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 11 active cores\n",
			ratio, bclk, ratio * bclk);

	ratio = (msr >> 8) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 10 active cores\n",
			ratio, bclk, ratio * bclk);

	ratio = (msr >> 0) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 9 active cores\n",
			ratio, bclk, ratio * bclk);

print_nhm_turbo_ratio_limits:
1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
	get_msr(0, MSR_NHM_SNB_PKG_CST_CFG_CTL, &msr);

#define SNB_C1_AUTO_UNDEMOTE              (1UL << 27)
#define SNB_C3_AUTO_UNDEMOTE              (1UL << 28)

	fprintf(stderr, "cpu0: MSR_NHM_SNB_PKG_CST_CFG_CTL: 0x%08llx", msr);

	fprintf(stderr, " (%s%s%s%s%slocked: pkg-cstate-limit=%d: ",
		(msr & SNB_C3_AUTO_UNDEMOTE) ? "UNdemote-C3, " : "",
		(msr & SNB_C1_AUTO_UNDEMOTE) ? "UNdemote-C1, " : "",
		(msr & NHM_C3_AUTO_DEMOTE) ? "demote-C3, " : "",
		(msr & NHM_C1_AUTO_DEMOTE) ? "demote-C1, " : "",
		(msr & (1 << 15)) ? "" : "UN",
		(unsigned int)msr & 7);


	switch(msr & 0x7) {
	case 0:
		fprintf(stderr, "pc0");
		break;
	case 1:
		fprintf(stderr, do_snb_cstates ? "pc2" : "pc0");
		break;
	case 2:
		fprintf(stderr, do_snb_cstates ? "pc6-noret" : "pc3");
		break;
	case 3:
		fprintf(stderr, "pc6");
		break;
	case 4:
		fprintf(stderr, "pc7");
		break;
	case 5:
		fprintf(stderr, do_snb_cstates ? "pc7s" : "invalid");
		break;
	case 7:
		fprintf(stderr, "unlimited");
		break;
	default:
		fprintf(stderr, "invalid");
	}
	fprintf(stderr, ")\n");
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	if (!do_nehalem_turbo_ratio_limit)
		return;

1077
	get_msr(0, MSR_NHM_TURBO_RATIO_LIMIT, &msr);
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1079
	fprintf(stderr, "cpu0: MSR_NHM_TURBO_RATIO_LIMIT: 0x%08llx\n", msr);
1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100

	ratio = (msr >> 56) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 8 active cores\n",
			ratio, bclk, ratio * bclk);

	ratio = (msr >> 48) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 7 active cores\n",
			ratio, bclk, ratio * bclk);

	ratio = (msr >> 40) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 6 active cores\n",
			ratio, bclk, ratio * bclk);

	ratio = (msr >> 32) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 5 active cores\n",
			ratio, bclk, ratio * bclk);

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	ratio = (msr >> 24) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 4 active cores\n",
			ratio, bclk, ratio * bclk);

	ratio = (msr >> 16) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 3 active cores\n",
			ratio, bclk, ratio * bclk);

	ratio = (msr >> 8) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 2 active cores\n",
			ratio, bclk, ratio * bclk);

	ratio = (msr >> 0) & 0xFF;
	if (ratio)
		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 1 active cores\n",
			ratio, bclk, ratio * bclk);
}

1122
void free_all_buffers(void)
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{
1124 1125 1126
	CPU_FREE(cpu_present_set);
	cpu_present_set = NULL;
	cpu_present_set = 0;
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1128 1129 1130
	CPU_FREE(cpu_affinity_set);
	cpu_affinity_set = NULL;
	cpu_affinity_setsize = 0;
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1132 1133 1134
	free(thread_even);
	free(core_even);
	free(package_even);
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1135

1136 1137 1138
	thread_even = NULL;
	core_even = NULL;
	package_even = NULL;
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1139

1140 1141 1142
	free(thread_odd);
	free(core_odd);
	free(package_odd);
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1143

1144 1145 1146
	thread_odd = NULL;
	core_odd = NULL;
	package_odd = NULL;
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1148 1149 1150
	free(output_buffer);
	output_buffer = NULL;
	outp = NULL;
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}

1153 1154 1155 1156 1157
/*
 * cpu_is_first_sibling_in_core(cpu)
 * return 1 if given CPU is 1st HT sibling in the core
 */
int cpu_is_first_sibling_in_core(int cpu)
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{
1159 1160 1161
	char path[64];
	FILE *filep;
	int first_cpu;
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1163 1164 1165 1166 1167
	sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
	filep = fopen(path, "r");
	if (filep == NULL) {
		perror(path);
		exit(1);
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	}
1169 1170 1171
	fscanf(filep, "%d", &first_cpu);
	fclose(filep);
	return (cpu == first_cpu);
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}

1174 1175 1176 1177 1178
/*
 * cpu_is_first_core_in_package(cpu)
 * return 1 if given CPU is 1st core in package
 */
int cpu_is_first_core_in_package(int cpu)
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{
1180 1181 1182
	char path[64];
	FILE *filep;
	int first_cpu;
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1184 1185 1186 1187
	sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
	filep = fopen(path, "r");
	if (filep == NULL) {
		perror(path);
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		exit(1);
	}
1190 1191 1192
	fscanf(filep, "%d", &first_cpu);
	fclose(filep);
	return (cpu == first_cpu);
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}

int get_physical_package_id(int cpu)
{
1197
	char path[80];
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	FILE *filep;
	int pkg;

	sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
	filep = fopen(path, "r");
	if (filep == NULL) {
		perror(path);
		exit(1);
	}
	fscanf(filep, "%d", &pkg);
	fclose(filep);
	return pkg;
}

int get_core_id(int cpu)
{
1214
	char path[80];
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	FILE *filep;
	int core;

	sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
	filep = fopen(path, "r");
	if (filep == NULL) {
		perror(path);
		exit(1);
	}
	fscanf(filep, "%d", &core);
	fclose(filep);
	return core;
}

1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257
int get_num_ht_siblings(int cpu)
{
	char path[80];
	FILE *filep;
	int sib1, sib2;
	int matches;
	char character;

	sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
	filep = fopen(path, "r");
	if (filep == NULL) {
		perror(path);
		exit(1);
	}
	/*
	 * file format:
	 * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
	 * otherwinse 1 sibling (self).
	 */
	matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);

	fclose(filep);

	if (matches == 3)
		return 2;
	else
		return 1;
}

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/*
1259 1260
 * run func(thread, core, package) in topology order
 * skip non-present cpus
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 */

1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306
int for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
	struct pkg_data *, struct thread_data *, struct core_data *,
	struct pkg_data *), struct thread_data *thread_base,
	struct core_data *core_base, struct pkg_data *pkg_base,
	struct thread_data *thread_base2, struct core_data *core_base2,
	struct pkg_data *pkg_base2)
{
	int retval, pkg_no, core_no, thread_no;

	for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
		for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
			for (thread_no = 0; thread_no <
				topo.num_threads_per_core; ++thread_no) {
				struct thread_data *t, *t2;
				struct core_data *c, *c2;
				struct pkg_data *p, *p2;

				t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);

				if (cpu_is_not_present(t->cpu_id))
					continue;

				t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);

				c = GET_CORE(core_base, core_no, pkg_no);
				c2 = GET_CORE(core_base2, core_no, pkg_no);

				p = GET_PKG(pkg_base, pkg_no);
				p2 = GET_PKG(pkg_base2, pkg_no);

				retval = func(t, c, p, t2, c2, p2);
				if (retval)
					return retval;
			}
		}
	}
	return 0;
}

/*
 * run func(cpu) on every cpu in /proc/stat
 * return max_cpu number
 */
int for_all_proc_cpus(int (func)(int))
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{
	FILE *fp;
1309
	int cpu_num;
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	int retval;

	fp = fopen(proc_stat, "r");
	if (fp == NULL) {
		perror(proc_stat);
		exit(1);
	}

	retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
	if (retval != 0) {
		perror("/proc/stat format");
		exit(1);
	}

1324 1325
	while (1) {
		retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
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		if (retval != 1)
			break;

1329 1330 1331 1332 1333
		retval = func(cpu_num);
		if (retval) {
			fclose(fp);
			return(retval);
		}
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	}
	fclose(fp);
1336
	return 0;
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}

void re_initialize(void)
{
1341 1342 1343
	free_all_buffers();
	setup_all_buffers();
	printf("turbostat: re-initialized with num_cpus %d\n", topo.num_cpus);
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}

1346

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/*
1348 1349
 * count_cpus()
 * remember the last one seen, it will be the max
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 */
1351
int count_cpus(int cpu)
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{
1353 1354
	if (topo.max_cpu_num < cpu)
		topo.max_cpu_num = cpu;
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1356 1357 1358 1359 1360 1361
	topo.num_cpus += 1;
	return 0;
}
int mark_cpu_present(int cpu)
{
	CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
1362
	return 0;
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}

void turbostat_loop()
{
1367
	int retval;
1368
	int restarted = 0;
1369

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restart:
1371 1372
	restarted++;

1373
	retval = for_all_cpus(get_counters, EVEN_COUNTERS);
1374 1375 1376
	if (retval < -1) {
		exit(retval);
	} else if (retval == -1) {
1377 1378 1379
		if (restarted > 1) {
			exit(retval);
		}
1380 1381 1382
		re_initialize();
		goto restart;
	}
1383
	restarted = 0;
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	gettimeofday(&tv_even, (struct timezone *)NULL);

	while (1) {
1387
		if (for_all_proc_cpus(cpu_is_not_present)) {
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			re_initialize();
			goto restart;
		}
		sleep(interval_sec);
1392
		retval = for_all_cpus(get_counters, ODD_COUNTERS);
1393 1394 1395
		if (retval < -1) {
			exit(retval);
		} else if (retval == -1) {
1396 1397 1398
			re_initialize();
			goto restart;
		}
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		gettimeofday(&tv_odd, (struct timezone *)NULL);
		timersub(&tv_odd, &tv_even, &tv_delta);
1401 1402 1403 1404
		for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS);
		compute_average(EVEN_COUNTERS);
		format_all_counters(EVEN_COUNTERS);
		flush_stdout();
1405
		sleep(interval_sec);
1406
		retval = for_all_cpus(get_counters, EVEN_COUNTERS);
1407 1408 1409
		if (retval < -1) {
			exit(retval);
		} else if (retval == -1) {
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			re_initialize();
			goto restart;
		}
		gettimeofday(&tv_even, (struct timezone *)NULL);
		timersub(&tv_even, &tv_odd, &tv_delta);
1415 1416 1417 1418
		for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS);
		compute_average(ODD_COUNTERS);
		format_all_counters(ODD_COUNTERS);
		flush_stdout();
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	}
}

void check_dev_msr()
{
	struct stat sb;

	if (stat("/dev/cpu/0/msr", &sb)) {
		fprintf(stderr, "no /dev/cpu/0/msr\n");
		fprintf(stderr, "Try \"# modprobe msr\"\n");
		exit(-5);
	}
}

void check_super_user()
{
	if (getuid() != 0) {
		fprintf(stderr, "must be root\n");
		exit(-6);
	}
}

int has_nehalem_turbo_ratio_limit(unsigned int family, unsigned int model)
{
	if (!genuine_intel)
		return 0;

	if (family != 6)
		return 0;

	switch (model) {
	case 0x1A:	/* Core i7, Xeon 5500 series - Bloomfield, Gainstown NHM-EP */
	case 0x1E:	/* Core i7 and i5 Processor - Clarksfield, Lynnfield, Jasper Forest */
	case 0x1F:	/* Core i7 and i5 Processor - Nehalem */
	case 0x25:	/* Westmere Client - Clarkdale, Arrandale */
	case 0x2C:	/* Westmere EP - Gulftown */
	case 0x2A:	/* SNB */
	case 0x2D:	/* SNB Xeon */
1457
	case 0x3A:	/* IVB */
1458
	case 0x3E:	/* IVB Xeon */
1459 1460 1461
	case 0x3C:	/* HSW */
	case 0x3F:	/* HSW */
	case 0x45:	/* HSW */
1462
	case 0x46:	/* HSW */
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		return 1;
	case 0x2E:	/* Nehalem-EX Xeon - Beckton */
	case 0x2F:	/* Westmere-EX Xeon - Eagleton */
	default:
		return 0;
	}
}
1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485
int has_ivt_turbo_ratio_limit(unsigned int family, unsigned int model)
{
	if (!genuine_intel)
		return 0;

	if (family != 6)
		return 0;

	switch (model) {
	case 0x3E:	/* IVB Xeon */
		return 1;
	default:
		return 0;
	}
}

1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553
/*
 * print_epb()
 * Decode the ENERGY_PERF_BIAS MSR
 */
int print_epb(struct thread_data *t, struct core_data *c, struct pkg_data *p)
{
	unsigned long long msr;
	char *epb_string;
	int cpu;

	if (!has_epb)
		return 0;

	cpu = t->cpu_id;

	/* EPB is per-package */
	if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
		return 0;

	if (cpu_migrate(cpu)) {
		fprintf(stderr, "Could not migrate to CPU %d\n", cpu);
		return -1;
	}

	if (get_msr(cpu, MSR_IA32_ENERGY_PERF_BIAS, &msr))
		return 0;

	switch (msr & 0x7) {
	case ENERGY_PERF_BIAS_PERFORMANCE:
		epb_string = "performance";
		break;
	case ENERGY_PERF_BIAS_NORMAL:
		epb_string = "balanced";
		break;
	case ENERGY_PERF_BIAS_POWERSAVE:
		epb_string = "powersave";
		break;
	default:
		epb_string = "custom";
		break;
	}
	fprintf(stderr, "cpu%d: MSR_IA32_ENERGY_PERF_BIAS: 0x%08llx (%s)\n", cpu, msr, epb_string);

	return 0;
}

#define	RAPL_POWER_GRANULARITY	0x7FFF	/* 15 bit power granularity */
#define	RAPL_TIME_GRANULARITY	0x3F /* 6 bit time granularity */

/*
 * rapl_probe()
 *
 * sets do_rapl
 */
void rapl_probe(unsigned int family, unsigned int model)
{
	unsigned long long msr;
	double tdp;

	if (!genuine_intel)
		return;

	if (family != 6)
		return;

	switch (model) {
	case 0x2A:
	case 0x3A:
1554 1555 1556
	case 0x3C:	/* HSW */
	case 0x3F:	/* HSW */
	case 0x45:	/* HSW */
1557
	case 0x46:	/* HSW */
1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782
		do_rapl = RAPL_PKG | RAPL_CORES | RAPL_GFX;
		break;
	case 0x2D:
	case 0x3E:
		do_rapl = RAPL_PKG | RAPL_CORES | RAPL_DRAM | RAPL_PKG_PERF_STATUS | RAPL_DRAM_PERF_STATUS;
		break;
	default:
		return;
	}

	/* units on package 0, verify later other packages match */
	if (get_msr(0, MSR_RAPL_POWER_UNIT, &msr))
		return;

	rapl_power_units = 1.0 / (1 << (msr & 0xF));
	rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
	rapl_time_units = 1.0 / (1 << (msr >> 16 & 0xF));

	/* get TDP to determine energy counter range */
	if (get_msr(0, MSR_PKG_POWER_INFO, &msr))
		return;

	tdp = ((msr >> 0) & RAPL_POWER_GRANULARITY) * rapl_power_units;

	rapl_joule_counter_range = 0xFFFFFFFF * rapl_energy_units / tdp;

	if (verbose)
		fprintf(stderr, "RAPL: %.0f sec. Joule Counter Range\n", rapl_joule_counter_range);

	return;
}

int print_thermal(struct thread_data *t, struct core_data *c, struct pkg_data *p)
{
	unsigned long long msr;
	unsigned int dts;
	int cpu;

	if (!(do_dts || do_ptm))
		return 0;

	cpu = t->cpu_id;

	/* DTS is per-core, no need to print for each thread */
	if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE)) 
		return 0;

	if (cpu_migrate(cpu)) {
		fprintf(stderr, "Could not migrate to CPU %d\n", cpu);
		return -1;
	}

	if (do_ptm && (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)) {
		if (get_msr(cpu, MSR_IA32_PACKAGE_THERM_STATUS, &msr))
			return 0;

		dts = (msr >> 16) & 0x7F;
		fprintf(stderr, "cpu%d: MSR_IA32_PACKAGE_THERM_STATUS: 0x%08llx (%d C)\n",
			cpu, msr, tcc_activation_temp - dts);

#ifdef	THERM_DEBUG
		if (get_msr(cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT, &msr))
			return 0;

		dts = (msr >> 16) & 0x7F;
		dts2 = (msr >> 8) & 0x7F;
		fprintf(stderr, "cpu%d: MSR_IA32_PACKAGE_THERM_INTERRUPT: 0x%08llx (%d C, %d C)\n",
			cpu, msr, tcc_activation_temp - dts, tcc_activation_temp - dts2);
#endif
	}


	if (do_dts) {
		unsigned int resolution;

		if (get_msr(cpu, MSR_IA32_THERM_STATUS, &msr))
			return 0;

		dts = (msr >> 16) & 0x7F;
		resolution = (msr >> 27) & 0xF;
		fprintf(stderr, "cpu%d: MSR_IA32_THERM_STATUS: 0x%08llx (%d C +/- %d)\n",
			cpu, msr, tcc_activation_temp - dts, resolution);

#ifdef THERM_DEBUG
		if (get_msr(cpu, MSR_IA32_THERM_INTERRUPT, &msr))
			return 0;

		dts = (msr >> 16) & 0x7F;
		dts2 = (msr >> 8) & 0x7F;
		fprintf(stderr, "cpu%d: MSR_IA32_THERM_INTERRUPT: 0x%08llx (%d C, %d C)\n",
			cpu, msr, tcc_activation_temp - dts, tcc_activation_temp - dts2);
#endif
	}

	return 0;
}
	
void print_power_limit_msr(int cpu, unsigned long long msr, char *label)
{
	fprintf(stderr, "cpu%d: %s: %sabled (%f Watts, %f sec, clamp %sabled)\n",
		cpu, label,
		((msr >> 15) & 1) ? "EN" : "DIS",
		((msr >> 0) & 0x7FFF) * rapl_power_units,
		(1.0 + (((msr >> 22) & 0x3)/4.0)) * (1 << ((msr >> 17) & 0x1F)) * rapl_time_units,
		(((msr >> 16) & 1) ? "EN" : "DIS"));

	return;
}

int print_rapl(struct thread_data *t, struct core_data *c, struct pkg_data *p)
{
	unsigned long long msr;
	int cpu;
	double local_rapl_power_units, local_rapl_energy_units, local_rapl_time_units;

	if (!do_rapl)
		return 0;

	/* RAPL counters are per package, so print only for 1st thread/package */
	if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
		return 0;

	cpu = t->cpu_id;
	if (cpu_migrate(cpu)) {
		fprintf(stderr, "Could not migrate to CPU %d\n", cpu);
		return -1;
	}

	if (get_msr(cpu, MSR_RAPL_POWER_UNIT, &msr))
		return -1;

	local_rapl_power_units = 1.0 / (1 << (msr & 0xF));
	local_rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
	local_rapl_time_units = 1.0 / (1 << (msr >> 16 & 0xF));

	if (local_rapl_power_units != rapl_power_units)
		fprintf(stderr, "cpu%d, ERROR: Power units mis-match\n", cpu);
	if (local_rapl_energy_units != rapl_energy_units)
		fprintf(stderr, "cpu%d, ERROR: Energy units mis-match\n", cpu);
	if (local_rapl_time_units != rapl_time_units)
		fprintf(stderr, "cpu%d, ERROR: Time units mis-match\n", cpu);

	if (verbose) {
		fprintf(stderr, "cpu%d: MSR_RAPL_POWER_UNIT: 0x%08llx "
			"(%f Watts, %f Joules, %f sec.)\n", cpu, msr,
			local_rapl_power_units, local_rapl_energy_units, local_rapl_time_units);
	}
	if (do_rapl & RAPL_PKG) {
		if (get_msr(cpu, MSR_PKG_POWER_INFO, &msr))
                	return -5;


		fprintf(stderr, "cpu%d: MSR_PKG_POWER_INFO: 0x%08llx (%.0f W TDP, RAPL %.0f - %.0f W, %f sec.)\n",
			cpu, msr,
			((msr >>  0) & RAPL_POWER_GRANULARITY) * rapl_power_units,
			((msr >> 16) & RAPL_POWER_GRANULARITY) * rapl_power_units,
			((msr >> 32) & RAPL_POWER_GRANULARITY) * rapl_power_units,
			((msr >> 48) & RAPL_TIME_GRANULARITY) * rapl_time_units);

		if (get_msr(cpu, MSR_PKG_POWER_LIMIT, &msr))
			return -9;

		fprintf(stderr, "cpu%d: MSR_PKG_POWER_LIMIT: 0x%08llx (%slocked)\n",
			cpu, msr, (msr >> 63) & 1 ? "": "UN");

		print_power_limit_msr(cpu, msr, "PKG Limit #1");
		fprintf(stderr, "cpu%d: PKG Limit #2: %sabled (%f Watts, %f* sec, clamp %sabled)\n",
			cpu,
			((msr >> 47) & 1) ? "EN" : "DIS",
			((msr >> 32) & 0x7FFF) * rapl_power_units,
			(1.0 + (((msr >> 54) & 0x3)/4.0)) * (1 << ((msr >> 49) & 0x1F)) * rapl_time_units,
			((msr >> 48) & 1) ? "EN" : "DIS");
	}

	if (do_rapl & RAPL_DRAM) {
		if (get_msr(cpu, MSR_DRAM_POWER_INFO, &msr))
                	return -6;


		fprintf(stderr, "cpu%d: MSR_DRAM_POWER_INFO,: 0x%08llx (%.0f W TDP, RAPL %.0f - %.0f W, %f sec.)\n",
			cpu, msr,
			((msr >>  0) & RAPL_POWER_GRANULARITY) * rapl_power_units,
			((msr >> 16) & RAPL_POWER_GRANULARITY) * rapl_power_units,
			((msr >> 32) & RAPL_POWER_GRANULARITY) * rapl_power_units,
			((msr >> 48) & RAPL_TIME_GRANULARITY) * rapl_time_units);


		if (get_msr(cpu, MSR_DRAM_POWER_LIMIT, &msr))
			return -9;
		fprintf(stderr, "cpu%d: MSR_DRAM_POWER_LIMIT: 0x%08llx (%slocked)\n",
				cpu, msr, (msr >> 31) & 1 ? "": "UN");

		print_power_limit_msr(cpu, msr, "DRAM Limit");
	}
	if (do_rapl & RAPL_CORES) {
		if (verbose) {
			if (get_msr(cpu, MSR_PP0_POLICY, &msr))
				return -7;

			fprintf(stderr, "cpu%d: MSR_PP0_POLICY: %lld\n", cpu, msr & 0xF);

			if (get_msr(cpu, MSR_PP0_POWER_LIMIT, &msr))
				return -9;
			fprintf(stderr, "cpu%d: MSR_PP0_POWER_LIMIT: 0x%08llx (%slocked)\n",
					cpu, msr, (msr >> 31) & 1 ? "": "UN");
			print_power_limit_msr(cpu, msr, "Cores Limit");
		}
	}
	if (do_rapl & RAPL_GFX) {
		if (verbose) {
			if (get_msr(cpu, MSR_PP1_POLICY, &msr))
				return -8;

			fprintf(stderr, "cpu%d: MSR_PP1_POLICY: %lld\n", cpu, msr & 0xF);

			if (get_msr(cpu, MSR_PP1_POWER_LIMIT, &msr))
				return -9;
			fprintf(stderr, "cpu%d: MSR_PP1_POWER_LIMIT: 0x%08llx (%slocked)\n",
					cpu, msr, (msr >> 31) & 1 ? "": "UN");
			print_power_limit_msr(cpu, msr, "GFX Limit");
		}
	}
	return 0;
}

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int is_snb(unsigned int family, unsigned int model)
{
	if (!genuine_intel)
		return 0;

	switch (model) {
	case 0x2A:
	case 0x2D:
1792
	case 0x3A:	/* IVB */
1793
	case 0x3E:	/* IVB Xeon */
1794 1795 1796
	case 0x3C:	/* HSW */
	case 0x3F:	/* HSW */
	case 0x45:	/* HSW */
1797
	case 0x46:	/* HSW */
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		return 1;
	}
	return 0;
}

1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815
int has_c8_c9_c10(unsigned int family, unsigned int model)
{
	if (!genuine_intel)
		return 0;

	switch (model) {
	case 0x45:
		return 1;
	}
	return 0;
}


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double discover_bclk(unsigned int family, unsigned int model)
{
	if (is_snb(family, model))
		return 100.00;
	else
		return 133.33;
}

1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889
/*
 * MSR_IA32_TEMPERATURE_TARGET indicates the temperature where
 * the Thermal Control Circuit (TCC) activates.
 * This is usually equal to tjMax.
 *
 * Older processors do not have this MSR, so there we guess,
 * but also allow cmdline over-ride with -T.
 *
 * Several MSR temperature values are in units of degrees-C
 * below this value, including the Digital Thermal Sensor (DTS),
 * Package Thermal Management Sensor (PTM), and thermal event thresholds.
 */
int set_temperature_target(struct thread_data *t, struct core_data *c, struct pkg_data *p)
{
	unsigned long long msr;
	unsigned int target_c_local;
	int cpu;

	/* tcc_activation_temp is used only for dts or ptm */
	if (!(do_dts || do_ptm))
		return 0;

	/* this is a per-package concept */
	if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
		return 0;

	cpu = t->cpu_id;
	if (cpu_migrate(cpu)) {
		fprintf(stderr, "Could not migrate to CPU %d\n", cpu);
		return -1;
	}

	if (tcc_activation_temp_override != 0) {
		tcc_activation_temp = tcc_activation_temp_override;
		fprintf(stderr, "cpu%d: Using cmdline TCC Target (%d C)\n",
			cpu, tcc_activation_temp);
		return 0;
	}

	/* Temperature Target MSR is Nehalem and newer only */
	if (!do_nehalem_platform_info)
		goto guess;

	if (get_msr(0, MSR_IA32_TEMPERATURE_TARGET, &msr))
		goto guess;

	target_c_local = (msr >> 16) & 0x7F;

	if (verbose)
		fprintf(stderr, "cpu%d: MSR_IA32_TEMPERATURE_TARGET: 0x%08llx (%d C)\n",
			cpu, msr, target_c_local);

	if (target_c_local < 85 || target_c_local > 120)
		goto guess;

	tcc_activation_temp = target_c_local;

	return 0;

guess:
	tcc_activation_temp = TJMAX_DEFAULT;
	fprintf(stderr, "cpu%d: Guessing tjMax %d C, Please use -T to specify\n",
		cpu, tcc_activation_temp);

	return 0;
}
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void check_cpuid()
{
	unsigned int eax, ebx, ecx, edx, max_level;
	unsigned int fms, family, model, stepping;

	eax = ebx = ecx = edx = 0;

	asm("cpuid" : "=a" (max_level), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0));

	if (ebx == 0x756e6547 && edx == 0x49656e69 && ecx == 0x6c65746e)
		genuine_intel = 1;

	if (verbose)
1903
		fprintf(stderr, "CPUID(0): %.4s%.4s%.4s ",
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			(char *)&ebx, (char *)&edx, (char *)&ecx);

	asm("cpuid" : "=a" (fms), "=c" (ecx), "=d" (edx) : "a" (1) : "ebx");
	family = (fms >> 8) & 0xf;
	model = (fms >> 4) & 0xf;
	stepping = fms & 0xf;
	if (family == 6 || family == 0xf)
		model += ((fms >> 16) & 0xf) << 4;

	if (verbose)
		fprintf(stderr, "%d CPUID levels; family:model:stepping 0x%x:%x:%x (%d:%d:%d)\n",
			max_level, family, model, stepping, family, model, stepping);

	if (!(edx & (1 << 5))) {
		fprintf(stderr, "CPUID: no MSR\n");
		exit(1);
	}

	/*
	 * check max extended function levels of CPUID.
	 * This is needed to check for invariant TSC.
	 * This check is valid for both Intel and AMD.
	 */
	ebx = ecx = edx = 0;
	asm("cpuid" : "=a" (max_level), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000000));

	if (max_level < 0x80000007) {
		fprintf(stderr, "CPUID: no invariant TSC (max_level 0x%x)\n", max_level);
		exit(1);
	}

	/*
	 * Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8
	 * this check is valid for both Intel and AMD
	 */
	asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000007));
1940
	has_invariant_tsc = edx & (1 << 8);
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	if (!has_invariant_tsc) {
		fprintf(stderr, "No invariant TSC\n");
		exit(1);
	}

	/*
	 * APERF/MPERF is advertised by CPUID.EAX=0x6: ECX.bit0
	 * this check is valid for both Intel and AMD
	 */

	asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x6));
1953
	has_aperf = ecx & (1 << 0);
1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966
	do_dts = eax & (1 << 0);
	do_ptm = eax & (1 << 6);
	has_epb = ecx & (1 << 3);

	if (verbose)
		fprintf(stderr, "CPUID(6): %s%s%s%s\n",
			has_aperf ? "APERF" : "No APERF!",
			do_dts ? ", DTS" : "",
			do_ptm ? ", PTM": "",
			has_epb ? ", EPB": "");

	if (!has_aperf)
		exit(-1);
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	do_nehalem_platform_info = genuine_intel && has_invariant_tsc;
	do_nhm_cstates = genuine_intel;	/* all Intel w/ non-stop TSC have NHM counters */
1970
	do_smi = do_nhm_cstates;
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Len Brown 已提交
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	do_snb_cstates = is_snb(family, model);
1972
	do_c8_c9_c10 = has_c8_c9_c10(family, model);
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	bclk = discover_bclk(family, model);

	do_nehalem_turbo_ratio_limit = has_nehalem_turbo_ratio_limit(family, model);
1976
	do_ivt_turbo_ratio_limit = has_ivt_turbo_ratio_limit(family, model);
1977 1978 1979
	rapl_probe(family, model);

	return;
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}


void usage()
{
1985
	fprintf(stderr, "%s: [-v][-R][-T][-p|-P|-S][-c MSR# | -s]][-C MSR#][-m MSR#][-M MSR#][-i interval_sec | command ...]\n",
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		progname);
	exit(1);
}


/*
 * in /dev/cpu/ return success for names that are numbers
 * ie. filter out ".", "..", "microcode".
 */
int dir_filter(const struct dirent *dirp)
{
	if (isdigit(dirp->d_name[0]))
		return 1;
	else
		return 0;
}

int open_dev_cpu_msr(int dummy1)
{
	return 0;
}

2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193
void topology_probe()
{
	int i;
	int max_core_id = 0;
	int max_package_id = 0;
	int max_siblings = 0;
	struct cpu_topology {
		int core_id;
		int physical_package_id;
	} *cpus;

	/* Initialize num_cpus, max_cpu_num */
	topo.num_cpus = 0;
	topo.max_cpu_num = 0;
	for_all_proc_cpus(count_cpus);
	if (!summary_only && topo.num_cpus > 1)
		show_cpu = 1;

	if (verbose > 1)
		fprintf(stderr, "num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);

	cpus = calloc(1, (topo.max_cpu_num  + 1) * sizeof(struct cpu_topology));
	if (cpus == NULL) {
		perror("calloc cpus");
		exit(1);
	}

	/*
	 * Allocate and initialize cpu_present_set
	 */
	cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
	if (cpu_present_set == NULL) {
		perror("CPU_ALLOC");
		exit(3);
	}
	cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
	CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
	for_all_proc_cpus(mark_cpu_present);

	/*
	 * Allocate and initialize cpu_affinity_set
	 */
	cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
	if (cpu_affinity_set == NULL) {
		perror("CPU_ALLOC");
		exit(3);
	}
	cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
	CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);


	/*
	 * For online cpus
	 * find max_core_id, max_package_id
	 */
	for (i = 0; i <= topo.max_cpu_num; ++i) {
		int siblings;

		if (cpu_is_not_present(i)) {
			if (verbose > 1)
				fprintf(stderr, "cpu%d NOT PRESENT\n", i);
			continue;
		}
		cpus[i].core_id = get_core_id(i);
		if (cpus[i].core_id > max_core_id)
			max_core_id = cpus[i].core_id;

		cpus[i].physical_package_id = get_physical_package_id(i);
		if (cpus[i].physical_package_id > max_package_id)
			max_package_id = cpus[i].physical_package_id;

		siblings = get_num_ht_siblings(i);
		if (siblings > max_siblings)
			max_siblings = siblings;
		if (verbose > 1)
			fprintf(stderr, "cpu %d pkg %d core %d\n",
				i, cpus[i].physical_package_id, cpus[i].core_id);
	}
	topo.num_cores_per_pkg = max_core_id + 1;
	if (verbose > 1)
		fprintf(stderr, "max_core_id %d, sizing for %d cores per package\n",
			max_core_id, topo.num_cores_per_pkg);
	if (!summary_only && topo.num_cores_per_pkg > 1)
		show_core = 1;

	topo.num_packages = max_package_id + 1;
	if (verbose > 1)
		fprintf(stderr, "max_package_id %d, sizing for %d packages\n",
			max_package_id, topo.num_packages);
	if (!summary_only && topo.num_packages > 1)
		show_pkg = 1;

	topo.num_threads_per_core = max_siblings;
	if (verbose > 1)
		fprintf(stderr, "max_siblings %d\n", max_siblings);

	free(cpus);
}

void
allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
{
	int i;

	*t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
		topo.num_packages, sizeof(struct thread_data));
	if (*t == NULL)
		goto error;

	for (i = 0; i < topo.num_threads_per_core *
		topo.num_cores_per_pkg * topo.num_packages; i++)
		(*t)[i].cpu_id = -1;

	*c = calloc(topo.num_cores_per_pkg * topo.num_packages,
		sizeof(struct core_data));
	if (*c == NULL)
		goto error;

	for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
		(*c)[i].core_id = -1;

	*p = calloc(topo.num_packages, sizeof(struct pkg_data));
	if (*p == NULL)
		goto error;

	for (i = 0; i < topo.num_packages; i++)
		(*p)[i].package_id = i;

	return;
error:
	perror("calloc counters");
	exit(1);
}
/*
 * init_counter()
 *
 * set cpu_id, core_num, pkg_num
 * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
 *
 * increment topo.num_cores when 1st core in pkg seen
 */
void init_counter(struct thread_data *thread_base, struct core_data *core_base,
	struct pkg_data *pkg_base, int thread_num, int core_num,
	int pkg_num, int cpu_id)
{
	struct thread_data *t;
	struct core_data *c;
	struct pkg_data *p;

	t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
	c = GET_CORE(core_base, core_num, pkg_num);
	p = GET_PKG(pkg_base, pkg_num);

	t->cpu_id = cpu_id;
	if (thread_num == 0) {
		t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
		if (cpu_is_first_core_in_package(cpu_id))
			t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
	}

	c->core_id = core_num;
	p->package_id = pkg_num;
}


int initialize_counters(int cpu_id)
{
	int my_thread_id, my_core_id, my_package_id;

	my_package_id = get_physical_package_id(cpu_id);
	my_core_id = get_core_id(cpu_id);

	if (cpu_is_first_sibling_in_core(cpu_id)) {
		my_thread_id = 0;
		topo.num_cores++;
	} else {
		my_thread_id = 1;
	}

	init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
	init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
	return 0;
}

void allocate_output_buffer()
{
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	output_buffer = calloc(1, (1 + topo.num_cpus) * 256);
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	outp = output_buffer;
	if (outp == NULL) {
		perror("calloc");
		exit(-1);
	}
}

void setup_all_buffers(void)
{
	topology_probe();
	allocate_counters(&thread_even, &core_even, &package_even);
	allocate_counters(&thread_odd, &core_odd, &package_odd);
	allocate_output_buffer();
	for_all_proc_cpus(initialize_counters);
}
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void turbostat_init()
{
	check_cpuid();

	check_dev_msr();
	check_super_user();

2217
	setup_all_buffers();
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	if (verbose)
2220
		print_verbose_header();
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	if (verbose)
		for_all_cpus(print_epb, ODD_COUNTERS);

	if (verbose)
		for_all_cpus(print_rapl, ODD_COUNTERS);

	for_all_cpus(set_temperature_target, ODD_COUNTERS);

	if (verbose)
		for_all_cpus(print_thermal, ODD_COUNTERS);
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}

int fork_it(char **argv)
{
	pid_t child_pid;
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	int status;
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	status = for_all_cpus(get_counters, EVEN_COUNTERS);
	if (status)
		exit(status);
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	/* clear affinity side-effect of get_counters() */
	sched_setaffinity(0, cpu_present_setsize, cpu_present_set);
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	gettimeofday(&tv_even, (struct timezone *)NULL);

	child_pid = fork();
	if (!child_pid) {
		/* child */
		execvp(argv[0], argv);
	} else {

		/* parent */
		if (child_pid == -1) {
			perror("fork");
			exit(1);
		}

		signal(SIGINT, SIG_IGN);
		signal(SIGQUIT, SIG_IGN);
		if (waitpid(child_pid, &status, 0) == -1) {
			perror("wait");
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			exit(status);
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		}
	}
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	/*
	 * n.b. fork_it() does not check for errors from for_all_cpus()
	 * because re-starting is problematic when forking
	 */
	for_all_cpus(get_counters, ODD_COUNTERS);
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	gettimeofday(&tv_odd, (struct timezone *)NULL);
	timersub(&tv_odd, &tv_even, &tv_delta);
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	for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS);
	compute_average(EVEN_COUNTERS);
	format_all_counters(EVEN_COUNTERS);
	flush_stderr();
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	fprintf(stderr, "%.6f sec\n", tv_delta.tv_sec + tv_delta.tv_usec/1000000.0);
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	return status;
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}

void cmdline(int argc, char **argv)
{
	int opt;

	progname = argv[0];

2288
	while ((opt = getopt(argc, argv, "+pPSvi:sc:sC:m:M:RT:")) != -1) {
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		switch (opt) {
2290
		case 'p':
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			show_core_only++;
			break;
2293
		case 'P':
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			show_pkg_only++;
			break;
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		case 'S':
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			summary_only++;
			break;
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		case 'v':
			verbose++;
			break;
		case 'i':
			interval_sec = atoi(optarg);
			break;
2305
		case 'c':
2306 2307
			sscanf(optarg, "%x", &extra_delta_offset32);
			break;
2308
		case 'C':
2309 2310
			sscanf(optarg, "%x", &extra_delta_offset64);
			break;
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		case 'm':
			sscanf(optarg, "%x", &extra_msr_offset32);
			break;
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		case 'M':
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			sscanf(optarg, "%x", &extra_msr_offset64);
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			break;
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		case 'R':
			rapl_verbose++;
			break;
		case 'T':
			tcc_activation_temp_override = atoi(optarg);
			break;
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		default:
			usage();
		}
	}
}

int main(int argc, char **argv)
{
	cmdline(argc, argv);

2333
	if (verbose)
2334
		fprintf(stderr, "turbostat v3.4 April 17, 2013"
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			" - Len Brown <lenb@kernel.org>\n");

	turbostat_init();

	/*
	 * if any params left, it must be a command to fork
	 */
	if (argc - optind)
		return fork_it(argv + optind);
	else
		turbostat_loop();

	return 0;
}