4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Len Brown <len.brown@xxxxxxxxx>
[ Upstream commit 0f7887c49b0c454aef9936a6eadabe1c91b5af55 ]
Turbostat dumps MSR_TURBO_RATIO_LIMIT on Core Architecture.
But Atom Architecture uses MSR_ATOM_CORE_RATIOS and
MSR_ATOM_CORE_TURBO_RATIOS.
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
tools/power/x86/turbostat/turbostat.c | 103 +++++++++++++++++++++++++++-------
1 file changed, 82 insertions(+), 21 deletions(-)
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -1470,6 +1470,54 @@ dump_nhm_turbo_ratio_limits(void)
}
static void
+dump_atom_turbo_ratio_limits(void)
+{
+ unsigned long long msr;
+ unsigned int ratio;
+
+ get_msr(base_cpu, MSR_ATOM_CORE_RATIOS, &msr);
+ fprintf(outf, "cpu%d: MSR_ATOM_CORE_RATIOS: 0x%08llx\n", base_cpu, msr & 0xFFFFFFFF);
+
+ ratio = (msr >> 0) & 0x3F;
+ if (ratio)
+ fprintf(outf, "%d * %.1f = %.1f MHz minimum operating frequency\n",
+ ratio, bclk, ratio * bclk);
+
+ ratio = (msr >> 8) & 0x3F;
+ if (ratio)
+ fprintf(outf, "%d * %.1f = %.1f MHz low frequency mode (LFM)\n",
+ ratio, bclk, ratio * bclk);
+
+ ratio = (msr >> 16) & 0x3F;
+ if (ratio)
+ fprintf(outf, "%d * %.1f = %.1f MHz base frequency\n",
+ ratio, bclk, ratio * bclk);
+
+ get_msr(base_cpu, MSR_ATOM_CORE_TURBO_RATIOS, &msr);
+ fprintf(outf, "cpu%d: MSR_ATOM_CORE_TURBO_RATIOS: 0x%08llx\n", base_cpu, msr & 0xFFFFFFFF);
+
+ ratio = (msr >> 24) & 0x3F;
+ if (ratio)
+ fprintf(outf, "%d * %.1f = %.1f MHz max turbo 4 active cores\n",
+ ratio, bclk, ratio * bclk);
+
+ ratio = (msr >> 16) & 0x3F;
+ if (ratio)
+ fprintf(outf, "%d * %.1f = %.1f MHz max turbo 3 active cores\n",
+ ratio, bclk, ratio * bclk);
+
+ ratio = (msr >> 8) & 0x3F;
+ if (ratio)
+ fprintf(outf, "%d * %.1f = %.1f MHz max turbo 2 active cores\n",
+ ratio, bclk, ratio * bclk);
+
+ ratio = (msr >> 0) & 0x3F;
+ if (ratio)
+ fprintf(outf, "%d * %.1f = %.1f MHz max turbo 1 active core\n",
+ ratio, bclk, ratio * bclk);
+}
+
+static void
dump_knl_turbo_ratio_limits(void)
{
const unsigned int buckets_no = 7;
@@ -2230,8 +2278,32 @@ int probe_nhm_msrs(unsigned int family,
has_base_hz = 1;
return 1;
}
+/*
+ * SLV client has supporet for unique MSRs:
+ *
+ * MSR_CC6_DEMOTION_POLICY_CONFIG
+ * MSR_MC6_DEMOTION_POLICY_CONFIG
+ */
+
+int has_slv_msrs(unsigned int family, unsigned int model)
+{
+ if (!genuine_intel)
+ return 0;
+
+ switch (model) {
+ case INTEL_FAM6_ATOM_SILVERMONT1:
+ case INTEL_FAM6_ATOM_MERRIFIELD:
+ case INTEL_FAM6_ATOM_MOOREFIELD:
+ return 1;
+ }
+ return 0;
+}
+
int has_nhm_turbo_ratio_limit(unsigned int family, unsigned int model)
{
+ if (has_slv_msrs(family, model))
+ return 0;
+
switch (model) {
/* Nehalem compatible, but do not include turbo-ratio limit support */
case 0x2E: /* Nehalem-EX Xeon - Beckton */
@@ -2242,6 +2314,13 @@ int has_nhm_turbo_ratio_limit(unsigned i
return 1;
}
}
+int has_atom_turbo_ratio_limit(unsigned int family, unsigned int model)
+{
+ if (has_slv_msrs(family, model))
+ return 1;
+
+ return 0;
+}
int has_ivt_turbo_ratio_limit(unsigned int family, unsigned int model)
{
if (!genuine_intel)
@@ -2337,6 +2416,9 @@ dump_cstate_pstate_config_info(unsigned
if (has_nhm_turbo_ratio_limit(family, model))
dump_nhm_turbo_ratio_limits();
+ if (has_atom_turbo_ratio_limit(family, model))
+ dump_atom_turbo_ratio_limits();
+
if (has_knl_turbo_ratio_limit(family, model))
dump_knl_turbo_ratio_limits();
@@ -2948,27 +3030,6 @@ int has_snb_msrs(unsigned int family, un
return 1;
}
return 0;
-}
-
-/*
- * SLV client has supporet for unique MSRs:
- *
- * MSR_CC6_DEMOTION_POLICY_CONFIG
- * MSR_MC6_DEMOTION_POLICY_CONFIG
- */
-
-int has_slv_msrs(unsigned int family, unsigned int model)
-{
- if (!genuine_intel)
- return 0;
-
- switch (model) {
- case INTEL_FAM6_ATOM_SILVERMONT1:
- case INTEL_FAM6_ATOM_MERRIFIELD:
- case INTEL_FAM6_ATOM_MOOREFIELD:
- return 1;
- }
- return 0;
}
/*