tools/power turbostat: dump secondary Turbo-Ratio-Limit

Intel Performance Hybrid processors have a 2nd MSR describing the turbo limits enforced on the Ecores. Note, TRL and Secondary-TRL are usually R/O information, but on overclock-capable parts, they can be written. Signed-off-by: Len Brown <[email protected]>
torvalds · Jul 28, 2022 · 4af184e · 4af184e
1 parent 5d62284
commit 4af184e
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Showing 2 changed files with 11 additions and 5 deletions.
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
@@ -388,6 +388,7 @@
 #define MSR_TURBO_ACTIVATION_RATIO 0x0000064C
 
 #define MSR_PLATFORM_ENERGY_STATUS 0x0000064D
+#define MSR_SECONDARY_TURBO_RATIO_LIMIT 0x00000650
 
 #define MSR_PKG_WEIGHTED_CORE_C0_RES 0x00000658
 #define MSR_PKG_ANY_CORE_C0_RES 0x00000659

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
@@ -2529,13 +2529,14 @@ int has_turbo_ratio_group_limits(int family, int model)
  }
 }
 
-static void dump_turbo_ratio_limits(int family, int model)
+static void dump_turbo_ratio_limits(int trl_msr_offset, int family, int model)
 {
  unsigned long long msr, core_counts;
  int shift;
 
- get_msr(base_cpu, MSR_TURBO_RATIO_LIMIT, &msr);
- fprintf(outf, "cpu%d: MSR_TURBO_RATIO_LIMIT: 0x%08llx\n", base_cpu, msr);
+ get_msr(base_cpu, trl_msr_offset, &msr);
+ fprintf(outf, "cpu%d: MSR_%sTURBO_RATIO_LIMIT: 0x%08llx\n",
+ base_cpu, trl_msr_offset == MSR_SECONDARY_TURBO_RATIO_LIMIT ? "SECONDARY" : "", msr);
 
  if (has_turbo_ratio_group_limits(family, model)) {
  get_msr(base_cpu, MSR_TURBO_RATIO_LIMIT1, &core_counts);
@@ -4073,8 +4074,12 @@ static void dump_cstate_pstate_config_info(unsigned int family, unsigned int mod
  if (has_ivt_turbo_ratio_limit(family, model))
  dump_ivt_turbo_ratio_limits();
 
- if (has_turbo_ratio_limit(family, model))
- dump_turbo_ratio_limits(family, model);
+ if (has_turbo_ratio_limit(family, model)) {
+ dump_turbo_ratio_limits(MSR_TURBO_RATIO_LIMIT, family, model);
+
+ if (is_hybrid)
+ dump_turbo_ratio_limits(MSR_SECONDARY_TURBO_RATIO_LIMIT, family, model);
+ }
 
  if (has_atom_turbo_ratio_limit(family, model))
  dump_atom_turbo_ratio_limits();