perf/x86/intel: Enable C-state residency events for Apollo Lake

Goldmont microarchitecture supports C1/C3/C6, PC2/PC3/PC6/PC10 state
residency counters, the patch enables them for Apollo Lake platform.

The MSR information is based on Intel Software Developers' Manual,
Vol. 4, Order No. 335592, Table 2-6 and 2-12.

Signed-off-by: Harry Pan <harry.pan@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: bp@suse.de
Cc: davidcc@google.com
Cc: gs0622@gmail.com
Cc: lukasz.odzioba@intel.com
Cc: piotr.luc@intel.com
Cc: srinivas.pandruvada@linux.intel.com
Link: http://lkml.kernel.org/r/20170717103749.24337-1-harry.pan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/events/intel/cstate.c b/arch/x86/events/intel/cstate.c
index 238ae32..4cf100f 100644 (file)
--- a/arch/x86/events/intel/cstate.c
+++ b/arch/x86/events/intel/cstate.c
@@ -40,16 +40,16 @@
  * Model specific counters:
  *     MSR_CORE_C1_RES: CORE C1 Residency Counter
  *                      perf code: 0x00
- *                      Available model: SLM,AMT
+ *                      Available model: SLM,AMT,GLM
  *                      Scope: Core (each processor core has a MSR)
  *     MSR_CORE_C3_RESIDENCY: CORE C3 Residency Counter
  *                            perf code: 0x01
- *                            Available model: NHM,WSM,SNB,IVB,HSW,BDW,SKL
+ *                            Available model: NHM,WSM,SNB,IVB,HSW,BDW,SKL,GLM
  *                            Scope: Core
  *     MSR_CORE_C6_RESIDENCY: CORE C6 Residency Counter
  *                            perf code: 0x02
  *                            Available model: SLM,AMT,NHM,WSM,SNB,IVB,HSW,BDW
- *                                             SKL,KNL
+ *                                             SKL,KNL,GLM
  *                            Scope: Core
  *     MSR_CORE_C7_RESIDENCY: CORE C7 Residency Counter
  *                            perf code: 0x03
@@ -57,16 +57,17 @@
  *                            Scope: Core
  *     MSR_PKG_C2_RESIDENCY:  Package C2 Residency Counter.
  *                            perf code: 0x00
- *                            Available model: SNB,IVB,HSW,BDW,SKL,KNL
+ *                            Available model: SNB,IVB,HSW,BDW,SKL,KNL,GLM
  *                            Scope: Package (physical package)
  *     MSR_PKG_C3_RESIDENCY:  Package C3 Residency Counter.
  *                            perf code: 0x01
  *                            Available model: NHM,WSM,SNB,IVB,HSW,BDW,SKL,KNL
+ *                                             GLM
  *                            Scope: Package (physical package)
  *     MSR_PKG_C6_RESIDENCY:  Package C6 Residency Counter.
  *                            perf code: 0x02
  *                            Available model: SLM,AMT,NHM,WSM,SNB,IVB,HSW,BDW
- *                                             SKL,KNL
+ *                                             SKL,KNL,GLM
  *                            Scope: Package (physical package)
  *     MSR_PKG_C7_RESIDENCY:  Package C7 Residency Counter.
  *                            perf code: 0x03
@@ -82,7 +83,7 @@
  *                            Scope: Package (physical package)
  *     MSR_PKG_C10_RESIDENCY: Package C10 Residency Counter.
  *                            perf code: 0x06
- *                            Available model: HSW ULT only
+ *                            Available model: HSW ULT, GLM
  *                            Scope: Package (physical package)
  *
  */
@@ -504,6 +505,17 @@ static const struct cstate_model knl_cstates __initconst = {
 };
 
 
+static const struct cstate_model glm_cstates __initconst = {
+       .core_events            = BIT(PERF_CSTATE_CORE_C1_RES) |
+                                 BIT(PERF_CSTATE_CORE_C3_RES) |
+                                 BIT(PERF_CSTATE_CORE_C6_RES),
+
+       .pkg_events             = BIT(PERF_CSTATE_PKG_C2_RES) |
+                                 BIT(PERF_CSTATE_PKG_C3_RES) |
+                                 BIT(PERF_CSTATE_PKG_C6_RES) |
+                                 BIT(PERF_CSTATE_PKG_C10_RES),
+};
+
 
 #define X86_CSTATES_MODEL(model, states)                               \
        { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (unsigned long) &(states) }
@@ -546,6 +558,8 @@ static const struct x86_cpu_id intel_cstates_match[] __initconst = {
 
        X86_CSTATES_MODEL(INTEL_FAM6_XEON_PHI_KNL, knl_cstates),
        X86_CSTATES_MODEL(INTEL_FAM6_XEON_PHI_KNM, knl_cstates),
+
+       X86_CSTATES_MODEL(INTEL_FAM6_ATOM_GOLDMONT, glm_cstates),
        { },
 };
 MODULE_DEVICE_TABLE(x86cpu, intel_cstates_match);