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tools/power turbostat: decode MSR_MISC_FEATURE_CONTROL

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useful for observing if the BIOS disabled prefetch
Not architectural, but docuemented as present on NHM, SNB
and is present on others.

Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown 2017-01-21 01:26:16 -05:00
parent 98af74599e
commit 33148d671c
1 changed files with 24 additions and 0 deletions
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24
tools/power/x86/turbostat/turbostat.c
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@ -102,6 +102,7 @@ unsigned int has_hwp_notify; /* IA32_HWP_INTERRUPT */
unsigned int has_hwp_activity_window; /* IA32_HWP_REQUEST[bits 41:32] */
unsigned int has_hwp_epp; /* IA32_HWP_REQUEST[bits 31:24] */
unsigned int has_hwp_pkg; /* IA32_HWP_REQUEST_PKG */
unsigned int has_misc_feature_control;
#define RAPL_PKG (1 << 0)
/* 0x610 MSR_PKG_POWER_LIMIT */
@ -2466,6 +2467,7 @@ void check_permissions()
*
* Side effect:
* sets global pkg_cstate_limit to decode MSR_PKG_CST_CONFIG_CONTROL
* sets has_misc_feature_control
*/
int probe_nhm_msrs(unsigned int family, unsigned int model)
{
@ -2496,6 +2498,7 @@ int probe_nhm_msrs(unsigned int family, unsigned int model)
case INTEL_FAM6_IVYBRIDGE: /* IVB */
case INTEL_FAM6_IVYBRIDGE_X: /* IVB Xeon */
pkg_cstate_limits = snb_pkg_cstate_limits;
has_misc_feature_control = 1;
break;
case INTEL_FAM6_HASWELL_CORE: /* HSW */
case INTEL_FAM6_HASWELL_X: /* HSX */
@ -2510,9 +2513,11 @@ int probe_nhm_msrs(unsigned int family, unsigned int model)
case INTEL_FAM6_KABYLAKE_MOBILE: /* KBL */
case INTEL_FAM6_KABYLAKE_DESKTOP: /* KBL */
pkg_cstate_limits = hsw_pkg_cstate_limits;
has_misc_feature_control = 1;
break;
case INTEL_FAM6_SKYLAKE_X: /* SKX */
pkg_cstate_limits = skx_pkg_cstate_limits;
has_misc_feature_control = 1;
break;
case INTEL_FAM6_ATOM_SILVERMONT1: /* BYT */
no_MSR_MISC_PWR_MGMT = 1;
@ -3579,6 +3584,21 @@ void decode_misc_enable_msr(void)
msr & MSR_IA32_MISC_ENABLE_TURBO_DISABLE ? "No-" : "");
}
void decode_misc_feature_control(void)
{
unsigned long long msr;
if (!has_misc_feature_control)
return;
if (!get_msr(base_cpu, MSR_MISC_FEATURE_CONTROL, &msr))
fprintf(outf, "cpu%d: MSR_MISC_FEATURE_CONTROL: 0x%08llx (%sL2-Prefetch %sL2-Prefetch-pair %sL1-Prefetch %sL1-IP-Prefetch)\n",
base_cpu, msr,
msr & (0 << 0) ? "No-" : "",
msr & (1 << 0) ? "No-" : "",
msr & (2 << 0) ? "No-" : "",
msr & (3 << 0) ? "No-" : "");
}
/*
* Decode MSR_MISC_PWR_MGMT
*
@ -3725,6 +3745,7 @@ void process_cpuid()
if (debug)
decode_misc_enable_msr();
if (max_level >= 0x7 && debug) {
int has_sgx;
@ -3852,6 +3873,9 @@ void process_cpuid()
if (!access("/sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz", R_OK))
BIC_PRESENT(BIC_GFXMHz);
if (debug)
decode_misc_feature_control();
return;
}