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

Cannon Lake supports C1/C3/C6/C7, PC2/PC3/PC6/PC7/PC8/PC9/PC10
state residency counters, this patch enables those counters.

( The MSR information is based on Intel Software Developers' Manual,
  Vol. 4, Order No. 335592. )

Tested-by: Puthikorn Voravootivat <puthik@chromium.org>
Signed-off-by: Harry Pan <harry.pan@intel.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan.liang@intel.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: gs0622@gmail.com
Link: http://lkml.kernel.org/r/20180309121549.630-3-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 72db066..9aca448 100644 (file)
--- a/arch/x86/events/intel/cstate.c
+++ b/arch/x86/events/intel/cstate.c
@@ -40,50 +40,51 @@
  * Model specific counters:
  *     MSR_CORE_C1_RES: CORE C1 Residency Counter
  *                      perf code: 0x00
- *                      Available model: SLM,AMT,GLM
+ *                      Available model: SLM,AMT,GLM,CNL
  *                      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,GLM
+ *                            Available model: NHM,WSM,SNB,IVB,HSW,BDW,SKL,GLM,
+                                               CNL
  *                            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,GLM
+ *                            Available model: SLM,AMT,NHM,WSM,SNB,IVB,HSW,BDW,
+ *                                             SKL,KNL,GLM,CNL
  *                            Scope: Core
  *     MSR_CORE_C7_RESIDENCY: CORE C7 Residency Counter
  *                            perf code: 0x03
- *                            Available model: SNB,IVB,HSW,BDW,SKL
+ *                            Available model: SNB,IVB,HSW,BDW,SKL,CNL
  *                            Scope: Core
  *     MSR_PKG_C2_RESIDENCY:  Package C2 Residency Counter.
  *                            perf code: 0x00
- *                            Available model: SNB,IVB,HSW,BDW,SKL,KNL,GLM
+ *                            Available model: SNB,IVB,HSW,BDW,SKL,KNL,GLM,CNL
  *                            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
+ *                            Available model: NHM,WSM,SNB,IVB,HSW,BDW,SKL,KNL,
+ *                                             GLM,CNL
  *                            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,GLM
+ *                                             SKL,KNL,GLM,CNL
  *                            Scope: Package (physical package)
  *     MSR_PKG_C7_RESIDENCY:  Package C7 Residency Counter.
  *                            perf code: 0x03
- *                            Available model: NHM,WSM,SNB,IVB,HSW,BDW,SKL
+ *                            Available model: NHM,WSM,SNB,IVB,HSW,BDW,SKL,CNL
  *                            Scope: Package (physical package)
  *     MSR_PKG_C8_RESIDENCY:  Package C8 Residency Counter.
  *                            perf code: 0x04
- *                            Available model: HSW ULT only
+ *                            Available model: HSW ULT,CNL
  *                            Scope: Package (physical package)
  *     MSR_PKG_C9_RESIDENCY:  Package C9 Residency Counter.
  *                            perf code: 0x05
- *                            Available model: HSW ULT only
+ *                            Available model: HSW ULT,CNL
  *                            Scope: Package (physical package)
  *     MSR_PKG_C10_RESIDENCY: Package C10 Residency Counter.
  *                            perf code: 0x06
- *                            Available model: HSW ULT, GLM
+ *                            Available model: HSW ULT,GLM,CNL
  *                            Scope: Package (physical package)
  *
  */
@@ -486,6 +487,21 @@ static const struct cstate_model hswult_cstates __initconst = {
                                  BIT(PERF_CSTATE_PKG_C10_RES),
 };
 
+static const struct cstate_model cnl_cstates __initconst = {
+       .core_events            = BIT(PERF_CSTATE_CORE_C1_RES) |
+                                 BIT(PERF_CSTATE_CORE_C3_RES) |
+                                 BIT(PERF_CSTATE_CORE_C6_RES) |
+                                 BIT(PERF_CSTATE_CORE_C7_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_C7_RES) |
+                                 BIT(PERF_CSTATE_PKG_C8_RES) |
+                                 BIT(PERF_CSTATE_PKG_C9_RES) |
+                                 BIT(PERF_CSTATE_PKG_C10_RES),
+};
+
 static const struct cstate_model slm_cstates __initconst = {
        .core_events            = BIT(PERF_CSTATE_CORE_C1_RES) |
                                  BIT(PERF_CSTATE_CORE_C6_RES),
@@ -557,6 +573,8 @@ static const struct x86_cpu_id intel_cstates_match[] __initconst = {
        X86_CSTATES_MODEL(INTEL_FAM6_KABYLAKE_MOBILE,  snb_cstates),
        X86_CSTATES_MODEL(INTEL_FAM6_KABYLAKE_DESKTOP, snb_cstates),
 
+       X86_CSTATES_MODEL(INTEL_FAM6_CANNONLAKE_MOBILE, cnl_cstates),
+
        X86_CSTATES_MODEL(INTEL_FAM6_XEON_PHI_KNL, knl_cstates),
        X86_CSTATES_MODEL(INTEL_FAM6_XEON_PHI_KNM, knl_cstates),