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tools/power turbostat: BYT does not have MSR_MISC_PWR_MGMT

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and so --debug fails with:

turbostat: msr 1 offset 0x1aa read failed: Input/output error

It seems that baytrail, and airmont do not have this MSR.
It is included in subsequent Goldmont Atom.

Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown 2017-01-01 13:08:33 -05:00
parent 812db3f77b
commit cf4cbe5314
1 changed files with 10 additions and 2 deletions
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12
tools/power/x86/turbostat/turbostat.c
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@ -70,6 +70,7 @@ unsigned int units = 1000000; /* MHz etc */
unsigned int genuine_intel;
unsigned int has_invariant_tsc;
unsigned int do_nhm_platform_info;
unsigned int no_MSR_MISC_PWR_MGMT;
unsigned int aperf_mperf_multiplier = 1;
double bclk;
double base_hz;
@ -330,7 +331,7 @@ int get_msr(int cpu, off_t offset, unsigned long long *msr)
retval = pread(get_msr_fd(cpu), msr, sizeof(*msr), offset);
if (retval != sizeof *msr)
err(-1, "msr %d offset 0x%llx read failed", cpu, (unsigned long long)offset);
err(-1, "cpu%d: msr offset 0x%llx read failed", cpu, (unsigned long long)offset);
return 0;
}
@ -2384,6 +2385,8 @@ void check_permissions()
* MSR_PLATFORM_INFO 0x000000ce
* MSR_NHM_SNB_PKG_CST_CFG_CTL 0x000000e2
*
* MSR_MISC_PWR_MGMT 0x000001aa
*
* MSR_PKG_C3_RESIDENCY 0x000003f8
* MSR_PKG_C6_RESIDENCY 0x000003f9
* MSR_CORE_C3_RESIDENCY 0x000003fc
@ -2440,11 +2443,13 @@ int probe_nhm_msrs(unsigned int family, unsigned int model)
pkg_cstate_limits = skx_pkg_cstate_limits;
break;
case INTEL_FAM6_ATOM_SILVERMONT1: /* BYT */
no_MSR_MISC_PWR_MGMT = 1;
case INTEL_FAM6_ATOM_SILVERMONT2: /* AVN */
pkg_cstate_limits = slv_pkg_cstate_limits;
break;
case INTEL_FAM6_ATOM_AIRMONT: /* AMT */
pkg_cstate_limits = amt_pkg_cstate_limits;
no_MSR_MISC_PWR_MGMT = 1;
break;
case INTEL_FAM6_XEON_PHI_KNL: /* PHI */
case INTEL_FAM6_XEON_PHI_KNM:
@ -3481,6 +3486,9 @@ void decode_misc_pwr_mgmt_msr(void)
if (!do_nhm_platform_info)
return;
if (no_MSR_MISC_PWR_MGMT)
return;
if (!get_msr(base_cpu, MSR_MISC_PWR_MGMT, &msr))
fprintf(outf, "cpu%d: MSR_MISC_PWR_MGMT: 0x%08llx (%sable-EIST_Coordination %sable-EPB %sable-OOB)\n",
base_cpu, msr,
@ -4061,7 +4069,7 @@ int get_and_dump_counters(void)
}
void print_version() {
fprintf(outf, "turbostat version 4.16 24 Dec 2016"
fprintf(outf, "turbostat version 4.17 1 Jan 2017"
" - Len Brown <lenb@kernel.org>\n");
}