linux-kernel - [PATCH] perf/x86/cstate: Add ICELAKE_X and ICELAKE

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Date:   Mon,  7 Jun 2021 14:46:03 +0800
From:   Zhang Rui <rui.zhang@...el.com>
To:     peterz@...radead.org, mingo@...hat.com, acme@...nel.org
Cc:     mark.rutland@....com, alexander.shishkin@...ux.intel.com,
        jolsa@...hat.com, namhyung@...nel.org,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        kan.liang@...ux.intel.com, artem.bityutskiy@...ux.intel.com,
        ak@...ux.intel.com, yao.jin@...el.com
Subject: [PATCH] perf/x86/cstate: Add ICELAKE_X and ICELAKE_D support

Introduce icx_cstates for ICELAKE_X and ICELAKE_D, and also update the
comments.

On ICELAKE_X and ICELAKE_D, Core C1, Core C6, Package C2 and Package C6
Residency MSRs are supported.

This patch has been tested on real hardware.

Signed-off-by: Zhang Rui <rui.zhang@...el.com>
Acked-by: Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>
Reviewed-by: Kan Liang <kan.liang@...ux.intel.com>
---
 arch/x86/events/intel/cstate.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/arch/x86/events/intel/cstate.c b/arch/x86/events/intel/cstate.c
index 433399069e27..c6262b154c3a 100644
--- a/arch/x86/events/intel/cstate.c
+++ b/arch/x86/events/intel/cstate.c
@@ -40,7 +40,7 @@
  * Model specific counters:
  *	MSR_CORE_C1_RES: CORE C1 Residency Counter
  *			 perf code: 0x00
- *			 Available model: SLM,AMT,GLM,CNL,TNT,ADL
+ *			 Available model: SLM,AMT,GLM,CNL,ICX,TNT,ADL
  *			 Scope: Core (each processor core has a MSR)
  *	MSR_CORE_C3_RESIDENCY: CORE C3 Residency Counter
  *			       perf code: 0x01
@@ -50,8 +50,8 @@
  *	MSR_CORE_C6_RESIDENCY: CORE C6 Residency Counter
  *			       perf code: 0x02
  *			       Available model: SLM,AMT,NHM,WSM,SNB,IVB,HSW,BDW,
- *						SKL,KNL,GLM,CNL,KBL,CML,ICL,TGL,
- *						TNT,RKL,ADL
+ *						SKL,KNL,GLM,CNL,KBL,CML,ICL,ICX,
+ *						TGL,TNT,RKL,ADL
  *			       Scope: Core
  *	MSR_CORE_C7_RESIDENCY: CORE C7 Residency Counter
  *			       perf code: 0x03
@@ -61,7 +61,7 @@
  *	MSR_PKG_C2_RESIDENCY:  Package C2 Residency Counter.
  *			       perf code: 0x00
  *			       Available model: SNB,IVB,HSW,BDW,SKL,KNL,GLM,CNL,
- *						KBL,CML,ICL,TGL,TNT,RKL,ADL
+ *						KBL,CML,ICL,ICX,TGL,TNT,RKL,ADL
  *			       Scope: Package (physical package)
  *	MSR_PKG_C3_RESIDENCY:  Package C3 Residency Counter.
  *			       perf code: 0x01
@@ -72,8 +72,8 @@
  *	MSR_PKG_C6_RESIDENCY:  Package C6 Residency Counter.
  *			       perf code: 0x02
  *			       Available model: SLM,AMT,NHM,WSM,SNB,IVB,HSW,BDW,
- *						SKL,KNL,GLM,CNL,KBL,CML,ICL,TGL,
- *						TNT,RKL,ADL
+ *						SKL,KNL,GLM,CNL,KBL,CML,ICL,ICX,
+ *						TGL,TNT,RKL,ADL
  *			       Scope: Package (physical package)
  *	MSR_PKG_C7_RESIDENCY:  Package C7 Residency Counter.
  *			       perf code: 0x03
@@ -566,6 +566,14 @@ static const struct cstate_model icl_cstates __initconst = {
 				  BIT(PERF_CSTATE_PKG_C10_RES),
 };
 
+static const struct cstate_model icx_cstates __initconst = {
+	.core_events		= BIT(PERF_CSTATE_CORE_C1_RES) |
+				  BIT(PERF_CSTATE_CORE_C6_RES),
+
+	.pkg_events		= BIT(PERF_CSTATE_PKG_C2_RES) |
+				  BIT(PERF_CSTATE_PKG_C6_RES),
+};
+
 static const struct cstate_model adl_cstates __initconst = {
 	.core_events		= BIT(PERF_CSTATE_CORE_C1_RES) |
 				  BIT(PERF_CSTATE_CORE_C6_RES) |
@@ -664,6 +672,9 @@ static const struct x86_cpu_id intel_cstates_match[] __initconst = {
 
 	X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_L,		&icl_cstates),
 	X86_MATCH_INTEL_FAM6_MODEL(ICELAKE,		&icl_cstates),
+	X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_X,		&icx_cstates),
+	X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_D,		&icx_cstates),
+
 	X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE_L,		&icl_cstates),
 	X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE,		&icl_cstates),
 	X86_MATCH_INTEL_FAM6_MODEL(ROCKETLAKE,		&icl_cstates),
-- 
2.17.1