mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 13:22:23 +00:00
tools/power turbostat: Add --no-msr option
Add --no-msr option to allow users to run turbostat without accessing MSRs via the MSR driver. Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com> Reviewed-by: Len Brown <len.brown@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Patryk Wlazlyn
Len Brown
parent
2d2ccd5733
commit
3e4048466c
@ -67,6 +67,8 @@ The column name "all" can be used to enable all disabled-by-default built-in cou
|
||||
.PP
|
||||
\fB--quiet\fP Do not decode and print the system configuration header information.
|
||||
.PP
|
||||
+\fB--no-msr\fP Disable all the uses of the MSR driver.
|
||||
+.PP
|
||||
\fB--interval seconds\fP overrides the default 5.0 second measurement interval.
|
||||
.PP
|
||||
\fB--num_iterations num\fP number of the measurement iterations.
|
||||
|
||||
@ -36,6 +36,7 @@
|
||||
#include <linux/perf_event.h>
|
||||
#include <asm/unistd.h>
|
||||
#include <stdbool.h>
|
||||
#include <assert.h>
|
||||
|
||||
#define UNUSED(x) (void)(x)
|
||||
|
||||
@ -265,6 +266,7 @@ unsigned int has_hwp_epp; /* IA32_HWP_REQUEST[bits 31:24] */
|
||||
unsigned int has_hwp_pkg; /* IA32_HWP_REQUEST_PKG */
|
||||
unsigned int first_counter_read = 1;
|
||||
int ignore_stdin;
|
||||
bool no_msr;
|
||||
|
||||
int get_msr(int cpu, off_t offset, unsigned long long *msr);
|
||||
|
||||
@ -1282,13 +1284,36 @@ int get_msr_fd(int cpu)
|
||||
sprintf(pathname, "/dev/cpu/%d/msr", cpu);
|
||||
fd = open(pathname, O_RDONLY);
|
||||
if (fd < 0)
|
||||
err(-1, "%s open failed, try chown or chmod +r /dev/cpu/*/msr, or run as root", pathname);
|
||||
err(-1, "%s open failed, try chown or chmod +r /dev/cpu/*/msr, "
|
||||
"or run with --no-msr, or run as root", pathname);
|
||||
|
||||
fd_percpu[cpu] = fd;
|
||||
|
||||
return fd;
|
||||
}
|
||||
|
||||
static void bic_disable_msr_access(void)
|
||||
{
|
||||
const unsigned long bic_msrs =
|
||||
BIC_Avg_MHz |
|
||||
BIC_Busy |
|
||||
BIC_Bzy_MHz |
|
||||
BIC_SMI |
|
||||
BIC_CPU_c1 |
|
||||
BIC_CPU_c3 |
|
||||
BIC_CPU_c6 |
|
||||
BIC_CPU_c7 |
|
||||
BIC_Mod_c6 |
|
||||
BIC_CoreTmp |
|
||||
BIC_Totl_c0 |
|
||||
BIC_Any_c0 |
|
||||
BIC_GFX_c0 |
|
||||
BIC_CPUGFX |
|
||||
BIC_Pkgpc2 | BIC_Pkgpc3 | BIC_Pkgpc6 | BIC_Pkgpc7 | BIC_Pkgpc8 | BIC_Pkgpc9 | BIC_Pkgpc10 | BIC_PkgTmp;
|
||||
|
||||
bic_enabled &= ~bic_msrs;
|
||||
}
|
||||
|
||||
static long perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu, int group_fd, unsigned long flags)
|
||||
{
|
||||
return syscall(__NR_perf_event_open, hw_event, pid, cpu, group_fd, flags);
|
||||
@ -1328,6 +1353,8 @@ int get_msr(int cpu, off_t offset, unsigned long long *msr)
|
||||
{
|
||||
ssize_t retval;
|
||||
|
||||
assert(!no_msr);
|
||||
|
||||
retval = pread(get_msr_fd(cpu), msr, sizeof(*msr), offset);
|
||||
|
||||
if (retval != sizeof *msr)
|
||||
@ -1371,6 +1398,7 @@ void help(void)
|
||||
" Override default 5-second measurement interval\n"
|
||||
" -J, --Joules displays energy in Joules instead of Watts\n"
|
||||
" -l, --list list column headers only\n"
|
||||
" -M, --no-msr Disable all uses of the MSR driver\n"
|
||||
" -n, --num_iterations num\n"
|
||||
" number of the measurement iterations\n"
|
||||
" -N, --header_iterations num\n"
|
||||
@ -2597,6 +2625,7 @@ unsigned long long snapshot_sysfs_counter(char *path)
|
||||
int get_mp(int cpu, struct msr_counter *mp, unsigned long long *counterp)
|
||||
{
|
||||
if (mp->msr_num != 0) {
|
||||
assert(!no_msr);
|
||||
if (get_msr(cpu, mp->msr_num, counterp))
|
||||
return -1;
|
||||
} else {
|
||||
@ -2646,6 +2675,9 @@ int get_epb(int cpu)
|
||||
return epb;
|
||||
|
||||
msr_fallback:
|
||||
if (no_msr)
|
||||
return -1;
|
||||
|
||||
get_msr(cpu, MSR_IA32_ENERGY_PERF_BIAS, &msr);
|
||||
|
||||
return msr & 0xf;
|
||||
@ -2865,7 +2897,7 @@ retry:
|
||||
if (DO_BIC(BIC_CORE_THROT_CNT))
|
||||
get_core_throt_cnt(cpu, &c->core_throt_cnt);
|
||||
|
||||
if (platform->rapl_msrs & RAPL_AMD_F17H) {
|
||||
if ((platform->rapl_msrs & RAPL_AMD_F17H) && !no_msr) {
|
||||
if (get_msr(cpu, MSR_CORE_ENERGY_STAT, &msr))
|
||||
return -14;
|
||||
c->core_energy = msr & 0xFFFFFFFF;
|
||||
@ -2930,41 +2962,44 @@ retry:
|
||||
if (DO_BIC(BIC_SYS_LPI))
|
||||
p->sys_lpi = cpuidle_cur_sys_lpi_us;
|
||||
|
||||
if (platform->rapl_msrs & RAPL_PKG) {
|
||||
if (get_msr_sum(cpu, MSR_PKG_ENERGY_STATUS, &msr))
|
||||
return -13;
|
||||
p->energy_pkg = msr;
|
||||
}
|
||||
if (platform->rapl_msrs & RAPL_CORE_ENERGY_STATUS) {
|
||||
if (get_msr_sum(cpu, MSR_PP0_ENERGY_STATUS, &msr))
|
||||
return -14;
|
||||
p->energy_cores = msr;
|
||||
}
|
||||
if (platform->rapl_msrs & RAPL_DRAM) {
|
||||
if (get_msr_sum(cpu, MSR_DRAM_ENERGY_STATUS, &msr))
|
||||
return -15;
|
||||
p->energy_dram = msr;
|
||||
}
|
||||
if (platform->rapl_msrs & RAPL_GFX) {
|
||||
if (get_msr_sum(cpu, MSR_PP1_ENERGY_STATUS, &msr))
|
||||
return -16;
|
||||
p->energy_gfx = msr;
|
||||
}
|
||||
if (platform->rapl_msrs & RAPL_PKG_PERF_STATUS) {
|
||||
if (get_msr_sum(cpu, MSR_PKG_PERF_STATUS, &msr))
|
||||
return -16;
|
||||
p->rapl_pkg_perf_status = msr;
|
||||
}
|
||||
if (platform->rapl_msrs & RAPL_DRAM_PERF_STATUS) {
|
||||
if (get_msr_sum(cpu, MSR_DRAM_PERF_STATUS, &msr))
|
||||
return -16;
|
||||
p->rapl_dram_perf_status = msr;
|
||||
}
|
||||
if (platform->rapl_msrs & RAPL_AMD_F17H) {
|
||||
if (get_msr_sum(cpu, MSR_PKG_ENERGY_STAT, &msr))
|
||||
return -13;
|
||||
p->energy_pkg = msr;
|
||||
if (!no_msr) {
|
||||
if (platform->rapl_msrs & RAPL_PKG) {
|
||||
if (get_msr_sum(cpu, MSR_PKG_ENERGY_STATUS, &msr))
|
||||
return -13;
|
||||
p->energy_pkg = msr;
|
||||
}
|
||||
if (platform->rapl_msrs & RAPL_CORE_ENERGY_STATUS) {
|
||||
if (get_msr_sum(cpu, MSR_PP0_ENERGY_STATUS, &msr))
|
||||
return -14;
|
||||
p->energy_cores = msr;
|
||||
}
|
||||
if (platform->rapl_msrs & RAPL_DRAM) {
|
||||
if (get_msr_sum(cpu, MSR_DRAM_ENERGY_STATUS, &msr))
|
||||
return -15;
|
||||
p->energy_dram = msr;
|
||||
}
|
||||
if (platform->rapl_msrs & RAPL_GFX) {
|
||||
if (get_msr_sum(cpu, MSR_PP1_ENERGY_STATUS, &msr))
|
||||
return -16;
|
||||
p->energy_gfx = msr;
|
||||
}
|
||||
if (platform->rapl_msrs & RAPL_PKG_PERF_STATUS) {
|
||||
if (get_msr_sum(cpu, MSR_PKG_PERF_STATUS, &msr))
|
||||
return -16;
|
||||
p->rapl_pkg_perf_status = msr;
|
||||
}
|
||||
if (platform->rapl_msrs & RAPL_DRAM_PERF_STATUS) {
|
||||
if (get_msr_sum(cpu, MSR_DRAM_PERF_STATUS, &msr))
|
||||
return -16;
|
||||
p->rapl_dram_perf_status = msr;
|
||||
}
|
||||
if (platform->rapl_msrs & RAPL_AMD_F17H) {
|
||||
if (get_msr_sum(cpu, MSR_PKG_ENERGY_STAT, &msr))
|
||||
return -13;
|
||||
p->energy_pkg = msr;
|
||||
}
|
||||
}
|
||||
|
||||
if (DO_BIC(BIC_PkgTmp)) {
|
||||
if (get_msr(cpu, MSR_IA32_PACKAGE_THERM_STATUS, &msr))
|
||||
return -17;
|
||||
@ -3072,7 +3107,7 @@ void probe_cst_limit(void)
|
||||
unsigned long long msr;
|
||||
int *pkg_cstate_limits;
|
||||
|
||||
if (!platform->has_nhm_msrs)
|
||||
if (!platform->has_nhm_msrs || no_msr)
|
||||
return;
|
||||
|
||||
switch (platform->cst_limit) {
|
||||
@ -3116,7 +3151,7 @@ static void dump_platform_info(void)
|
||||
unsigned long long msr;
|
||||
unsigned int ratio;
|
||||
|
||||
if (!platform->has_nhm_msrs)
|
||||
if (!platform->has_nhm_msrs || no_msr)
|
||||
return;
|
||||
|
||||
get_msr(base_cpu, MSR_PLATFORM_INFO, &msr);
|
||||
@ -3134,7 +3169,7 @@ static void dump_power_ctl(void)
|
||||
{
|
||||
unsigned long long msr;
|
||||
|
||||
if (!platform->has_nhm_msrs)
|
||||
if (!platform->has_nhm_msrs || no_msr)
|
||||
return;
|
||||
|
||||
get_msr(base_cpu, MSR_IA32_POWER_CTL, &msr);
|
||||
@ -3340,7 +3375,7 @@ static void dump_cst_cfg(void)
|
||||
{
|
||||
unsigned long long msr;
|
||||
|
||||
if (!platform->has_nhm_msrs)
|
||||
if (!platform->has_nhm_msrs || no_msr)
|
||||
return;
|
||||
|
||||
get_msr(base_cpu, MSR_PKG_CST_CONFIG_CONTROL, &msr);
|
||||
@ -3412,7 +3447,7 @@ void print_irtl(void)
|
||||
{
|
||||
unsigned long long msr;
|
||||
|
||||
if (!platform->has_irtl_msrs)
|
||||
if (!platform->has_irtl_msrs || no_msr)
|
||||
return;
|
||||
|
||||
if (platform->supported_cstates & PC3) {
|
||||
@ -4193,6 +4228,8 @@ int get_msr_sum(int cpu, off_t offset, unsigned long long *msr)
|
||||
int ret, idx;
|
||||
unsigned long long msr_cur, msr_last;
|
||||
|
||||
assert(!no_msr);
|
||||
|
||||
if (!per_cpu_msr_sum)
|
||||
return 1;
|
||||
|
||||
@ -4221,6 +4258,8 @@ static int update_msr_sum(struct thread_data *t, struct core_data *c, struct pkg
|
||||
UNUSED(c);
|
||||
UNUSED(p);
|
||||
|
||||
assert(!no_msr);
|
||||
|
||||
for (i = IDX_PKG_ENERGY; i < IDX_COUNT; i++) {
|
||||
unsigned long long msr_cur, msr_last;
|
||||
off_t offset;
|
||||
@ -4465,7 +4504,7 @@ void check_permissions(void)
|
||||
sprintf(pathname, "/dev/cpu/%d/msr", base_cpu);
|
||||
if (euidaccess(pathname, R_OK)) {
|
||||
do_exit++;
|
||||
warn("/dev/cpu/0/msr open failed, try chown or chmod +r /dev/cpu/*/msr");
|
||||
warn("/dev/cpu/0/msr open failed, try chown or chmod +r /dev/cpu/*/msr, or run with --no-msr");
|
||||
}
|
||||
|
||||
/* if all else fails, thell them to be root */
|
||||
@ -4482,7 +4521,7 @@ void probe_bclk(void)
|
||||
unsigned long long msr;
|
||||
unsigned int base_ratio;
|
||||
|
||||
if (!platform->has_nhm_msrs)
|
||||
if (!platform->has_nhm_msrs || no_msr)
|
||||
return;
|
||||
|
||||
if (platform->bclk_freq == BCLK_100MHZ)
|
||||
@ -4522,7 +4561,7 @@ static void dump_turbo_ratio_info(void)
|
||||
if (!has_turbo)
|
||||
return;
|
||||
|
||||
if (!platform->has_nhm_msrs)
|
||||
if (!platform->has_nhm_msrs || no_msr)
|
||||
return;
|
||||
|
||||
if (platform->trl_msrs & TRL_LIMIT2)
|
||||
@ -4845,6 +4884,9 @@ int print_hwp(struct thread_data *t, struct core_data *c, struct pkg_data *p)
|
||||
UNUSED(c);
|
||||
UNUSED(p);
|
||||
|
||||
if (no_msr)
|
||||
return 0;
|
||||
|
||||
if (!has_hwp)
|
||||
return 0;
|
||||
|
||||
@ -4931,6 +4973,9 @@ int print_perf_limit(struct thread_data *t, struct core_data *c, struct pkg_data
|
||||
UNUSED(c);
|
||||
UNUSED(p);
|
||||
|
||||
if (no_msr)
|
||||
return 0;
|
||||
|
||||
cpu = t->cpu_id;
|
||||
|
||||
/* per-package */
|
||||
@ -5264,7 +5309,7 @@ int print_rapl(struct thread_data *t, struct core_data *c, struct pkg_data *p)
|
||||
*/
|
||||
void probe_rapl(void)
|
||||
{
|
||||
if (!platform->rapl_msrs)
|
||||
if (!platform->rapl_msrs || no_msr)
|
||||
return;
|
||||
|
||||
if (genuine_intel)
|
||||
@ -5320,7 +5365,7 @@ int set_temperature_target(struct thread_data *t, struct core_data *c, struct pk
|
||||
}
|
||||
|
||||
/* Temperature Target MSR is Nehalem and newer only */
|
||||
if (!platform->has_nhm_msrs)
|
||||
if (!platform->has_nhm_msrs || no_msr)
|
||||
goto guess;
|
||||
|
||||
if (get_msr(base_cpu, MSR_IA32_TEMPERATURE_TARGET, &msr))
|
||||
@ -5367,6 +5412,9 @@ int print_thermal(struct thread_data *t, struct core_data *c, struct pkg_data *p
|
||||
UNUSED(c);
|
||||
UNUSED(p);
|
||||
|
||||
if (no_msr)
|
||||
return 0;
|
||||
|
||||
if (!(do_dts || do_ptm))
|
||||
return 0;
|
||||
|
||||
@ -5464,6 +5512,9 @@ void decode_feature_control_msr(void)
|
||||
{
|
||||
unsigned long long msr;
|
||||
|
||||
if (no_msr)
|
||||
return;
|
||||
|
||||
if (!get_msr(base_cpu, MSR_IA32_FEAT_CTL, &msr))
|
||||
fprintf(outf, "cpu%d: MSR_IA32_FEATURE_CONTROL: 0x%08llx (%sLocked %s)\n",
|
||||
base_cpu, msr, msr & FEAT_CTL_LOCKED ? "" : "UN-", msr & (1 << 18) ? "SGX" : "");
|
||||
@ -5473,6 +5524,9 @@ void decode_misc_enable_msr(void)
|
||||
{
|
||||
unsigned long long msr;
|
||||
|
||||
if (no_msr)
|
||||
return;
|
||||
|
||||
if (!genuine_intel)
|
||||
return;
|
||||
|
||||
@ -5490,6 +5544,9 @@ void decode_misc_feature_control(void)
|
||||
{
|
||||
unsigned long long msr;
|
||||
|
||||
if (no_msr)
|
||||
return;
|
||||
|
||||
if (!platform->has_msr_misc_feature_control)
|
||||
return;
|
||||
|
||||
@ -5511,6 +5568,9 @@ void decode_misc_pwr_mgmt_msr(void)
|
||||
{
|
||||
unsigned long long msr;
|
||||
|
||||
if (no_msr)
|
||||
return;
|
||||
|
||||
if (!platform->has_msr_misc_pwr_mgmt)
|
||||
return;
|
||||
|
||||
@ -5530,6 +5590,9 @@ void decode_c6_demotion_policy_msr(void)
|
||||
{
|
||||
unsigned long long msr;
|
||||
|
||||
if (no_msr)
|
||||
return;
|
||||
|
||||
if (!platform->has_msr_c6_demotion_policy_config)
|
||||
return;
|
||||
|
||||
@ -5626,7 +5689,7 @@ void probe_cstates(void)
|
||||
if (platform->has_msr_module_c6_res_ms)
|
||||
BIC_PRESENT(BIC_Mod_c6);
|
||||
|
||||
if (platform->has_ext_cst_msrs) {
|
||||
if (platform->has_ext_cst_msrs && !no_msr) {
|
||||
BIC_PRESENT(BIC_Totl_c0);
|
||||
BIC_PRESENT(BIC_Any_c0);
|
||||
BIC_PRESENT(BIC_GFX_c0);
|
||||
@ -5714,10 +5777,12 @@ void process_cpuid()
|
||||
ecx_flags = ecx;
|
||||
edx_flags = edx;
|
||||
|
||||
if (get_msr(sched_getcpu(), MSR_IA32_UCODE_REV, &ucode_patch))
|
||||
warnx("get_msr(UCODE)");
|
||||
else
|
||||
ucode_patch_valid = true;
|
||||
if (!no_msr) {
|
||||
if (get_msr(sched_getcpu(), MSR_IA32_UCODE_REV, &ucode_patch))
|
||||
warnx("get_msr(UCODE)");
|
||||
else
|
||||
ucode_patch_valid = true;
|
||||
}
|
||||
|
||||
/*
|
||||
* check max extended function levels of CPUID.
|
||||
@ -5892,7 +5957,7 @@ void probe_pm_features(void)
|
||||
|
||||
probe_thermal();
|
||||
|
||||
if (platform->has_nhm_msrs)
|
||||
if (platform->has_nhm_msrs && !no_msr)
|
||||
BIC_PRESENT(BIC_SMI);
|
||||
|
||||
if (!quiet)
|
||||
@ -6252,8 +6317,10 @@ void turbostat_init()
|
||||
{
|
||||
setup_all_buffers(true);
|
||||
set_base_cpu();
|
||||
check_dev_msr();
|
||||
check_permissions();
|
||||
if (!no_msr) {
|
||||
check_dev_msr();
|
||||
check_permissions();
|
||||
}
|
||||
process_cpuid();
|
||||
probe_pm_features();
|
||||
linux_perf_init();
|
||||
@ -6370,6 +6437,9 @@ int add_counter(unsigned int msr_num, char *path, char *name,
|
||||
{
|
||||
struct msr_counter *msrp;
|
||||
|
||||
if (no_msr && msr_num)
|
||||
errx(1, "Requested MSR counter 0x%x, but in --no-msr mode", msr_num);
|
||||
|
||||
msrp = calloc(1, sizeof(struct msr_counter));
|
||||
if (msrp == NULL) {
|
||||
perror("calloc");
|
||||
@ -6674,6 +6744,7 @@ void cmdline(int argc, char **argv)
|
||||
{ "list", no_argument, 0, 'l' },
|
||||
{ "out", required_argument, 0, 'o' },
|
||||
{ "quiet", no_argument, 0, 'q' },
|
||||
{ "no-msr", no_argument, 0, 'M' },
|
||||
{ "show", required_argument, 0, 's' },
|
||||
{ "Summary", no_argument, 0, 'S' },
|
||||
{ "TCC", required_argument, 0, 'T' },
|
||||
@ -6683,7 +6754,22 @@ void cmdline(int argc, char **argv)
|
||||
|
||||
progname = argv[0];
|
||||
|
||||
while ((opt = getopt_long_only(argc, argv, "+C:c:Dde:hi:Jn:o:qST:v", long_options, &option_index)) != -1) {
|
||||
/*
|
||||
* Parse some options early, because they may make other options invalid,
|
||||
* like adding the MSR counter with --add and at the same time using --no-msr.
|
||||
*/
|
||||
while ((opt = getopt_long_only(argc, argv, "M", long_options, &option_index)) != -1) {
|
||||
switch (opt) {
|
||||
case 'M':
|
||||
no_msr = 1;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
optind = 0;
|
||||
|
||||
while ((opt = getopt_long_only(argc, argv, "+C:c:Dde:hi:Jn:o:qMST:v", long_options, &option_index)) != -1) {
|
||||
switch (opt) {
|
||||
case 'a':
|
||||
parse_add_command(optarg);
|
||||
@ -6741,6 +6827,9 @@ void cmdline(int argc, char **argv)
|
||||
case 'q':
|
||||
quiet = 1;
|
||||
break;
|
||||
case 'M':
|
||||
/* Parsed earlier */
|
||||
break;
|
||||
case 'n':
|
||||
num_iterations = strtod(optarg, NULL);
|
||||
|
||||
@ -6817,6 +6906,9 @@ skip_cgroup_setting:
|
||||
outf = stderr;
|
||||
cmdline(argc, argv);
|
||||
|
||||
if (no_msr)
|
||||
bic_disable_msr_access();
|
||||
|
||||
if (!quiet) {
|
||||
print_version();
|
||||
print_bootcmd();
|
||||
@ -6829,7 +6921,8 @@ skip_cgroup_setting:
|
||||
|
||||
turbostat_init();
|
||||
|
||||
msr_sum_record();
|
||||
if (!no_msr)
|
||||
msr_sum_record();
|
||||
|
||||
/* dump counters and exit */
|
||||
if (dump_only)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user