linux-kernel - [PATCH 3/6] perf/x86/intel: Factor out the initialization code for ADL e-core

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Message-Id: <20230829125806.3016082-4-kan.liang@linux.intel.com>
Date:   Tue, 29 Aug 2023 05:58:03 -0700
From:   kan.liang@...ux.intel.com
To:     peterz@...radead.org, mingo@...hat.com,
        linux-kernel@...r.kernel.org
Cc:     dapeng1.mi@...ux.intel.com, zhenyuw@...ux.intel.com,
        Kan Liang <kan.liang@...ux.intel.com>
Subject: [PATCH 3/6] perf/x86/intel: Factor out the initialization code for ADL e-core

From: Kan Liang <kan.liang@...ux.intel.com>

>From PMU's perspective, the ADL e-core and newer SRF/GRR have a similar
uarch. Most of the initialization code can be shared.

Factor out intel_pmu_init_grt() for the common initialization code.
The common part of the ADL e-core will be replaced by the later patch.

Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
---
 arch/x86/events/intel/core.c | 58 +++++++++++++-----------------------
 1 file changed, 21 insertions(+), 37 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index e9e69401524a..cffaa97035a0 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -5933,6 +5933,25 @@ static __always_inline void intel_pmu_init_glc(struct pmu *pmu)
 	hybrid(pmu, pebs_constraints) = intel_glc_pebs_event_constraints;
 }
 
+static __always_inline void intel_pmu_init_grt(struct pmu *pmu)
+{
+	x86_pmu.mid_ack = true;
+	x86_pmu.limit_period = glc_limit_period;
+	x86_pmu.pebs_aliases = NULL;
+	x86_pmu.pebs_prec_dist = true;
+	x86_pmu.pebs_block = true;
+	x86_pmu.lbr_pt_coexist = true;
+	x86_pmu.flags |= PMU_FL_HAS_RSP_1;
+	x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
+
+	memcpy(hybrid_var(pmu, hw_cache_event_ids), glp_hw_cache_event_ids, sizeof(hw_cache_event_ids));
+	memcpy(hybrid_var(pmu, hw_cache_extra_regs), tnt_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
+	hybrid_var(pmu, hw_cache_event_ids)[C(ITLB)][C(OP_READ)][C(RESULT_ACCESS)] = -1;
+	hybrid(pmu, event_constraints) = intel_slm_event_constraints;
+	hybrid(pmu, pebs_constraints) = intel_grt_pebs_event_constraints;
+	hybrid(pmu, extra_regs) = intel_grt_extra_regs;
+}
+
 __init int intel_pmu_init(void)
 {
 	struct attribute **extra_skl_attr = &empty_attrs;
@@ -6211,28 +6230,10 @@ __init int intel_pmu_init(void)
 		break;
 
 	case INTEL_FAM6_ATOM_GRACEMONT:
-		x86_pmu.mid_ack = true;
-		memcpy(hw_cache_event_ids, glp_hw_cache_event_ids,
-		       sizeof(hw_cache_event_ids));
-		memcpy(hw_cache_extra_regs, tnt_hw_cache_extra_regs,
-		       sizeof(hw_cache_extra_regs));
-		hw_cache_event_ids[C(ITLB)][C(OP_READ)][C(RESULT_ACCESS)] = -1;
-
-		x86_pmu.event_constraints = intel_slm_event_constraints;
-		x86_pmu.pebs_constraints = intel_grt_pebs_event_constraints;
-		x86_pmu.extra_regs = intel_grt_extra_regs;
-
-		x86_pmu.pebs_aliases = NULL;
-		x86_pmu.pebs_prec_dist = true;
-		x86_pmu.pebs_block = true;
-		x86_pmu.lbr_pt_coexist = true;
-		x86_pmu.flags |= PMU_FL_HAS_RSP_1;
-		x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
-
+		intel_pmu_init_grt(NULL);
 		intel_pmu_pebs_data_source_grt();
 		x86_pmu.pebs_latency_data = adl_latency_data_small;
 		x86_pmu.get_event_constraints = tnt_get_event_constraints;
-		x86_pmu.limit_period = glc_limit_period;
 		td_attr = tnt_events_attrs;
 		mem_attr = grt_mem_attrs;
 		extra_attr = nhm_format_attr;
@@ -6242,28 +6243,11 @@ __init int intel_pmu_init(void)
 
 	case INTEL_FAM6_ATOM_CRESTMONT:
 	case INTEL_FAM6_ATOM_CRESTMONT_X:
-		x86_pmu.mid_ack = true;
-		memcpy(hw_cache_event_ids, glp_hw_cache_event_ids,
-		       sizeof(hw_cache_event_ids));
-		memcpy(hw_cache_extra_regs, tnt_hw_cache_extra_regs,
-		       sizeof(hw_cache_extra_regs));
-		hw_cache_event_ids[C(ITLB)][C(OP_READ)][C(RESULT_ACCESS)] = -1;
-
-		x86_pmu.event_constraints = intel_slm_event_constraints;
-		x86_pmu.pebs_constraints = intel_grt_pebs_event_constraints;
+		intel_pmu_init_grt(NULL);
 		x86_pmu.extra_regs = intel_cmt_extra_regs;
-
-		x86_pmu.pebs_aliases = NULL;
-		x86_pmu.pebs_prec_dist = true;
-		x86_pmu.lbr_pt_coexist = true;
-		x86_pmu.pebs_block = true;
-		x86_pmu.flags |= PMU_FL_HAS_RSP_1;
-		x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
-
 		intel_pmu_pebs_data_source_cmt();
 		x86_pmu.pebs_latency_data = mtl_latency_data_small;
 		x86_pmu.get_event_constraints = cmt_get_event_constraints;
-		x86_pmu.limit_period = glc_limit_period;
 		td_attr = cmt_events_attrs;
 		mem_attr = grt_mem_attrs;
 		extra_attr = cmt_format_attr;
-- 
2.35.1