[PATCH 0/6] Cleanup Intel PMU initialization code

[PATCH 0/6] Cleanup Intel PMU initialization code

[kan.liang]

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

The patch set is to clean up the Intel PMU initialization code. There is
no functional change.

Kan Liang (6):
  perf/x86/intel: Use the common uarch name for the shared functions
  perf/x86/intel: Factor out the initialization code for SPR
  perf/x86/intel: Factor out the initialization code for ADL e-core
  perf/x86/intel: Apply the common initialization code for ADL
  perf/x86/intel: Cleanup the hybrid CPU type
  perf/x86/intel: Add common intel_pmu_init_hybrid

 arch/x86/events/core.c       |   6 +-
 arch/x86/events/intel/core.c | 397 ++++++++++++++++++-----------------
 arch/x86/events/intel/ds.c   |   4 +-
 arch/x86/events/perf_event.h |  37 ++--
 4 files changed, 226 insertions(+), 218 deletions(-)

-- 
2.35.1

[PATCH 1/6] perf/x86/intel: Use the common uarch name for the shared functions

[kan.liang]

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

From PMU's perspective, the SPR/GNR server has a similar uarch to the
ADL/MTL client p-core. Many functions are shared. However, the shared
function name uses the abbreviation of the server product code name,
rather than the common uarch code name.

Rename these internal shared functions by the common uarch name.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
---
 arch/x86/events/intel/core.c | 64 ++++++++++++++++++------------------
 arch/x86/events/intel/ds.c   |  2 +-
 arch/x86/events/perf_event.h |  2 +-
 3 files changed, 34 insertions(+), 34 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 64a3533997e1..6c98c272d4f8 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -299,7 +299,7 @@ static struct extra_reg intel_icl_extra_regs[] __read_mostly = {
 	EVENT_EXTRA_END
 };
 
-static struct extra_reg intel_spr_extra_regs[] __read_mostly = {
+static struct extra_reg intel_glc_extra_regs[] __read_mostly = {
 	INTEL_UEVENT_EXTRA_REG(0x012a, MSR_OFFCORE_RSP_0, 0x3fffffffffull, RSP_0),
 	INTEL_UEVENT_EXTRA_REG(0x012b, MSR_OFFCORE_RSP_1, 0x3fffffffffull, RSP_1),
 	INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
@@ -309,7 +309,7 @@ static struct extra_reg intel_spr_extra_regs[] __read_mostly = {
 	EVENT_EXTRA_END
 };
 
-static struct event_constraint intel_spr_event_constraints[] = {
+static struct event_constraint intel_glc_event_constraints[] = {
 	FIXED_EVENT_CONSTRAINT(0x00c0, 0),	/* INST_RETIRED.ANY */
 	FIXED_EVENT_CONSTRAINT(0x0100, 0),	/* INST_RETIRED.PREC_DIST */
 	FIXED_EVENT_CONSTRAINT(0x003c, 1),	/* CPU_CLK_UNHALTED.CORE */
@@ -349,7 +349,7 @@ static struct event_constraint intel_spr_event_constraints[] = {
 	EVENT_CONSTRAINT_END
 };
 
-static struct extra_reg intel_gnr_extra_regs[] __read_mostly = {
+static struct extra_reg intel_rwc_extra_regs[] __read_mostly = {
 	INTEL_UEVENT_EXTRA_REG(0x012a, MSR_OFFCORE_RSP_0, 0x3fffffffffull, RSP_0),
 	INTEL_UEVENT_EXTRA_REG(0x012b, MSR_OFFCORE_RSP_1, 0x3fffffffffull, RSP_1),
 	INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
@@ -473,7 +473,7 @@ static u64 intel_pmu_event_map(int hw_event)
 	return intel_perfmon_event_map[hw_event];
 }
 
-static __initconst const u64 spr_hw_cache_event_ids
+static __initconst const u64 glc_hw_cache_event_ids
 				[PERF_COUNT_HW_CACHE_MAX]
 				[PERF_COUNT_HW_CACHE_OP_MAX]
 				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
@@ -552,7 +552,7 @@ static __initconst const u64 spr_hw_cache_event_ids
  },
 };
 
-static __initconst const u64 spr_hw_cache_extra_regs
+static __initconst const u64 glc_hw_cache_extra_regs
 				[PERF_COUNT_HW_CACHE_MAX]
 				[PERF_COUNT_HW_CACHE_OP_MAX]
 				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
@@ -4266,7 +4266,7 @@ icl_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
 }
 
 static struct event_constraint *
-spr_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
+glc_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
 			  struct perf_event *event)
 {
 	struct event_constraint *c;
@@ -4355,7 +4355,7 @@ adl_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
 	struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
 
 	if (pmu->cpu_type == hybrid_big)
-		return spr_get_event_constraints(cpuc, idx, event);
+		return glc_get_event_constraints(cpuc, idx, event);
 	else if (pmu->cpu_type == hybrid_small)
 		return tnt_get_event_constraints(cpuc, idx, event);
 
@@ -4402,7 +4402,7 @@ rwc_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
 {
 	struct event_constraint *c;
 
-	c = spr_get_event_constraints(cpuc, idx, event);
+	c = glc_get_event_constraints(cpuc, idx, event);
 
 	/* The Retire Latency is not supported by the fixed counter 0. */
 	if (event->attr.precise_ip &&
@@ -4483,7 +4483,7 @@ static void nhm_limit_period(struct perf_event *event, s64 *left)
 	*left = max(*left, 32LL);
 }
 
-static void spr_limit_period(struct perf_event *event, s64 *left)
+static void glc_limit_period(struct perf_event *event, s64 *left)
 {
 	if (event->attr.precise_ip == 3)
 		*left = max(*left, 128LL);
@@ -5330,14 +5330,14 @@ static struct attribute *icl_tsx_events_attrs[] = {
 EVENT_ATTR_STR(mem-stores,	mem_st_spr,	"event=0xcd,umask=0x2");
 EVENT_ATTR_STR(mem-loads-aux,	mem_ld_aux,	"event=0x03,umask=0x82");
 
-static struct attribute *spr_events_attrs[] = {
+static struct attribute *glc_events_attrs[] = {
 	EVENT_PTR(mem_ld_hsw),
 	EVENT_PTR(mem_st_spr),
 	EVENT_PTR(mem_ld_aux),
 	NULL,
 };
 
-static struct attribute *spr_td_events_attrs[] = {
+static struct attribute *glc_td_events_attrs[] = {
 	EVENT_PTR(slots),
 	EVENT_PTR(td_retiring),
 	EVENT_PTR(td_bad_spec),
@@ -5350,7 +5350,7 @@ static struct attribute *spr_td_events_attrs[] = {
 	NULL,
 };
 
-static struct attribute *spr_tsx_events_attrs[] = {
+static struct attribute *glc_tsx_events_attrs[] = {
 	EVENT_PTR(tx_start),
 	EVENT_PTR(tx_abort),
 	EVENT_PTR(tx_commit),
@@ -6208,7 +6208,7 @@ __init int intel_pmu_init(void)
 		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 = spr_limit_period;
+		x86_pmu.limit_period = glc_limit_period;
 		td_attr = tnt_events_attrs;
 		mem_attr = grt_mem_attrs;
 		extra_attr = nhm_format_attr;
@@ -6239,7 +6239,7 @@ __init int intel_pmu_init(void)
 		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 = spr_limit_period;
+		x86_pmu.limit_period = glc_limit_period;
 		td_attr = cmt_events_attrs;
 		mem_attr = grt_mem_attrs;
 		extra_attr = cmt_format_attr;
@@ -6556,20 +6556,20 @@ __init int intel_pmu_init(void)
 	case INTEL_FAM6_SAPPHIRERAPIDS_X:
 	case INTEL_FAM6_EMERALDRAPIDS_X:
 		x86_pmu.flags |= PMU_FL_MEM_LOADS_AUX;
-		x86_pmu.extra_regs = intel_spr_extra_regs;
+		x86_pmu.extra_regs = intel_glc_extra_regs;
 		fallthrough;
 	case INTEL_FAM6_GRANITERAPIDS_X:
 	case INTEL_FAM6_GRANITERAPIDS_D:
 		pmem = true;
 		x86_pmu.late_ack = true;
-		memcpy(hw_cache_event_ids, spr_hw_cache_event_ids, sizeof(hw_cache_event_ids));
-		memcpy(hw_cache_extra_regs, spr_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
+		memcpy(hw_cache_event_ids, glc_hw_cache_event_ids, sizeof(hw_cache_event_ids));
+		memcpy(hw_cache_extra_regs, glc_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
 
-		x86_pmu.event_constraints = intel_spr_event_constraints;
-		x86_pmu.pebs_constraints = intel_spr_pebs_event_constraints;
+		x86_pmu.event_constraints = intel_glc_event_constraints;
+		x86_pmu.pebs_constraints = intel_glc_pebs_event_constraints;
 		if (!x86_pmu.extra_regs)
-			x86_pmu.extra_regs = intel_gnr_extra_regs;
-		x86_pmu.limit_period = spr_limit_period;
+			x86_pmu.extra_regs = intel_rwc_extra_regs;
+		x86_pmu.limit_period = glc_limit_period;
 		x86_pmu.pebs_ept = 1;
 		x86_pmu.pebs_aliases = NULL;
 		x86_pmu.pebs_prec_dist = true;
@@ -6579,13 +6579,13 @@ __init int intel_pmu_init(void)
 		x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
 
 		x86_pmu.hw_config = hsw_hw_config;
-		x86_pmu.get_event_constraints = spr_get_event_constraints;
+		x86_pmu.get_event_constraints = glc_get_event_constraints;
 		extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
 			hsw_format_attr : nhm_format_attr;
 		extra_skl_attr = skl_format_attr;
-		mem_attr = spr_events_attrs;
-		td_attr = spr_td_events_attrs;
-		tsx_attr = spr_tsx_events_attrs;
+		mem_attr = glc_events_attrs;
+		td_attr = glc_td_events_attrs;
+		tsx_attr = glc_tsx_events_attrs;
 		x86_pmu.rtm_abort_event = X86_CONFIG(.event=0xc9, .umask=0x04);
 		x86_pmu.lbr_pt_coexist = true;
 		intel_pmu_pebs_data_source_skl(pmem);
@@ -6635,7 +6635,7 @@ __init int intel_pmu_init(void)
 		x86_pmu.filter = intel_pmu_filter;
 		x86_pmu.get_event_constraints = adl_get_event_constraints;
 		x86_pmu.hw_config = adl_hw_config;
-		x86_pmu.limit_period = spr_limit_period;
+		x86_pmu.limit_period = glc_limit_period;
 		x86_pmu.get_hybrid_cpu_type = adl_get_hybrid_cpu_type;
 		/*
 		 * The rtm_abort_event is used to check whether to enable GPRs
@@ -6684,11 +6684,11 @@ __init int intel_pmu_init(void)
 		pmu->intel_cap.perf_metrics = 1;
 		pmu->intel_cap.pebs_output_pt_available = 0;
 
-		memcpy(pmu->hw_cache_event_ids, spr_hw_cache_event_ids, sizeof(pmu->hw_cache_event_ids));
-		memcpy(pmu->hw_cache_extra_regs, spr_hw_cache_extra_regs, sizeof(pmu->hw_cache_extra_regs));
-		pmu->event_constraints = intel_spr_event_constraints;
-		pmu->pebs_constraints = intel_spr_pebs_event_constraints;
-		pmu->extra_regs = intel_spr_extra_regs;
+		memcpy(pmu->hw_cache_event_ids, glc_hw_cache_event_ids, sizeof(pmu->hw_cache_event_ids));
+		memcpy(pmu->hw_cache_extra_regs, glc_hw_cache_extra_regs, sizeof(pmu->hw_cache_extra_regs));
+		pmu->event_constraints = intel_glc_event_constraints;
+		pmu->pebs_constraints = intel_glc_pebs_event_constraints;
+		pmu->extra_regs = intel_glc_extra_regs;
 
 		/* Initialize Atom core specific PerfMon capabilities.*/
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX];
@@ -6712,7 +6712,7 @@ __init int intel_pmu_init(void)
 		pmu->pebs_constraints = intel_grt_pebs_event_constraints;
 		pmu->extra_regs = intel_grt_extra_regs;
 		if (is_mtl(boot_cpu_data.x86_model)) {
-			x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX].extra_regs = intel_gnr_extra_regs;
+			x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX].extra_regs = intel_rwc_extra_regs;
 			x86_pmu.pebs_latency_data = mtl_latency_data_small;
 			extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
 				mtl_hybrid_extra_attr_rtm : mtl_hybrid_extra_attr;
diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index eb8dd8b8a1e8..74642469ca7b 100644
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -1058,7 +1058,7 @@ struct event_constraint intel_icl_pebs_event_constraints[] = {
 	EVENT_CONSTRAINT_END
 };
 
-struct event_constraint intel_spr_pebs_event_constraints[] = {
+struct event_constraint intel_glc_pebs_event_constraints[] = {
 	INTEL_FLAGS_UEVENT_CONSTRAINT(0x100, 0x100000000ULL),	/* INST_RETIRED.PREC_DIST */
 	INTEL_FLAGS_UEVENT_CONSTRAINT(0x0400, 0x800000000ULL),
 
diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
index c8ba2be7585d..96a427fc55cf 100644
--- a/arch/x86/events/perf_event.h
+++ b/arch/x86/events/perf_event.h
@@ -1521,7 +1521,7 @@ extern struct event_constraint intel_skl_pebs_event_constraints[];
 
 extern struct event_constraint intel_icl_pebs_event_constraints[];
 
-extern struct event_constraint intel_spr_pebs_event_constraints[];
+extern struct event_constraint intel_glc_pebs_event_constraints[];
 
 struct event_constraint *intel_pebs_constraints(struct perf_event *event);
 
-- 
2.35.1

[tip: perf/core] perf/x86/intel: Use the common uarch name for the shared functions

[tip-bot2 for Kan Liang]

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     d4b5694c75d4eba8238d541a55da0c67e876213e
Gitweb:        https://git.kernel.org/tip/d4b5694c75d4eba8238d541a55da0c67e876213e
Author:        Kan Liang <kan.liang@linux.intel.com>
AuthorDate:    Tue, 29 Aug 2023 05:58:01 -07:00
Committer:     Ingo Molnar <mingo@kernel.org>
CommitterDate: Tue, 29 Aug 2023 20:59:22 +02:00

perf/x86/intel: Use the common uarch name for the shared functions

>From PMU's perspective, the SPR/GNR server has a similar uarch to the
ADL/MTL client p-core. Many functions are shared. However, the shared
function name uses the abbreviation of the server product code name,
rather than the common uarch code name.

Rename these internal shared functions by the common uarch name.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230829125806.3016082-2-kan.liang@linux.intel.com
---
 arch/x86/events/intel/core.c | 64 +++++++++++++++++------------------
 arch/x86/events/intel/ds.c   |  2 +-
 arch/x86/events/perf_event.h |  2 +-
 3 files changed, 34 insertions(+), 34 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index fa355d3..93be19c 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -299,7 +299,7 @@ static struct extra_reg intel_icl_extra_regs[] __read_mostly = {
 	EVENT_EXTRA_END
 };
 
-static struct extra_reg intel_spr_extra_regs[] __read_mostly = {
+static struct extra_reg intel_glc_extra_regs[] __read_mostly = {
 	INTEL_UEVENT_EXTRA_REG(0x012a, MSR_OFFCORE_RSP_0, 0x3fffffffffull, RSP_0),
 	INTEL_UEVENT_EXTRA_REG(0x012b, MSR_OFFCORE_RSP_1, 0x3fffffffffull, RSP_1),
 	INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
@@ -309,7 +309,7 @@ static struct extra_reg intel_spr_extra_regs[] __read_mostly = {
 	EVENT_EXTRA_END
 };
 
-static struct event_constraint intel_spr_event_constraints[] = {
+static struct event_constraint intel_glc_event_constraints[] = {
 	FIXED_EVENT_CONSTRAINT(0x00c0, 0),	/* INST_RETIRED.ANY */
 	FIXED_EVENT_CONSTRAINT(0x0100, 0),	/* INST_RETIRED.PREC_DIST */
 	FIXED_EVENT_CONSTRAINT(0x003c, 1),	/* CPU_CLK_UNHALTED.CORE */
@@ -349,7 +349,7 @@ static struct event_constraint intel_spr_event_constraints[] = {
 	EVENT_CONSTRAINT_END
 };
 
-static struct extra_reg intel_gnr_extra_regs[] __read_mostly = {
+static struct extra_reg intel_rwc_extra_regs[] __read_mostly = {
 	INTEL_UEVENT_EXTRA_REG(0x012a, MSR_OFFCORE_RSP_0, 0x3fffffffffull, RSP_0),
 	INTEL_UEVENT_EXTRA_REG(0x012b, MSR_OFFCORE_RSP_1, 0x3fffffffffull, RSP_1),
 	INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
@@ -473,7 +473,7 @@ static u64 intel_pmu_event_map(int hw_event)
 	return intel_perfmon_event_map[hw_event];
 }
 
-static __initconst const u64 spr_hw_cache_event_ids
+static __initconst const u64 glc_hw_cache_event_ids
 				[PERF_COUNT_HW_CACHE_MAX]
 				[PERF_COUNT_HW_CACHE_OP_MAX]
 				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
@@ -552,7 +552,7 @@ static __initconst const u64 spr_hw_cache_event_ids
  },
 };
 
-static __initconst const u64 spr_hw_cache_extra_regs
+static __initconst const u64 glc_hw_cache_extra_regs
 				[PERF_COUNT_HW_CACHE_MAX]
 				[PERF_COUNT_HW_CACHE_OP_MAX]
 				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
@@ -4273,7 +4273,7 @@ icl_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
 }
 
 static struct event_constraint *
-spr_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
+glc_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
 			  struct perf_event *event)
 {
 	struct event_constraint *c;
@@ -4362,7 +4362,7 @@ adl_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
 	struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
 
 	if (pmu->cpu_type == hybrid_big)
-		return spr_get_event_constraints(cpuc, idx, event);
+		return glc_get_event_constraints(cpuc, idx, event);
 	else if (pmu->cpu_type == hybrid_small)
 		return tnt_get_event_constraints(cpuc, idx, event);
 
@@ -4409,7 +4409,7 @@ rwc_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
 {
 	struct event_constraint *c;
 
-	c = spr_get_event_constraints(cpuc, idx, event);
+	c = glc_get_event_constraints(cpuc, idx, event);
 
 	/* The Retire Latency is not supported by the fixed counter 0. */
 	if (event->attr.precise_ip &&
@@ -4490,7 +4490,7 @@ static void nhm_limit_period(struct perf_event *event, s64 *left)
 	*left = max(*left, 32LL);
 }
 
-static void spr_limit_period(struct perf_event *event, s64 *left)
+static void glc_limit_period(struct perf_event *event, s64 *left)
 {
 	if (event->attr.precise_ip == 3)
 		*left = max(*left, 128LL);
@@ -5337,14 +5337,14 @@ static struct attribute *icl_tsx_events_attrs[] = {
 EVENT_ATTR_STR(mem-stores,	mem_st_spr,	"event=0xcd,umask=0x2");
 EVENT_ATTR_STR(mem-loads-aux,	mem_ld_aux,	"event=0x03,umask=0x82");
 
-static struct attribute *spr_events_attrs[] = {
+static struct attribute *glc_events_attrs[] = {
 	EVENT_PTR(mem_ld_hsw),
 	EVENT_PTR(mem_st_spr),
 	EVENT_PTR(mem_ld_aux),
 	NULL,
 };
 
-static struct attribute *spr_td_events_attrs[] = {
+static struct attribute *glc_td_events_attrs[] = {
 	EVENT_PTR(slots),
 	EVENT_PTR(td_retiring),
 	EVENT_PTR(td_bad_spec),
@@ -5357,7 +5357,7 @@ static struct attribute *spr_td_events_attrs[] = {
 	NULL,
 };
 
-static struct attribute *spr_tsx_events_attrs[] = {
+static struct attribute *glc_tsx_events_attrs[] = {
 	EVENT_PTR(tx_start),
 	EVENT_PTR(tx_abort),
 	EVENT_PTR(tx_commit),
@@ -6215,7 +6215,7 @@ __init int intel_pmu_init(void)
 		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 = spr_limit_period;
+		x86_pmu.limit_period = glc_limit_period;
 		td_attr = tnt_events_attrs;
 		mem_attr = grt_mem_attrs;
 		extra_attr = nhm_format_attr;
@@ -6246,7 +6246,7 @@ __init int intel_pmu_init(void)
 		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 = spr_limit_period;
+		x86_pmu.limit_period = glc_limit_period;
 		td_attr = cmt_events_attrs;
 		mem_attr = grt_mem_attrs;
 		extra_attr = cmt_format_attr;
@@ -6563,20 +6563,20 @@ __init int intel_pmu_init(void)
 	case INTEL_FAM6_SAPPHIRERAPIDS_X:
 	case INTEL_FAM6_EMERALDRAPIDS_X:
 		x86_pmu.flags |= PMU_FL_MEM_LOADS_AUX;
-		x86_pmu.extra_regs = intel_spr_extra_regs;
+		x86_pmu.extra_regs = intel_glc_extra_regs;
 		fallthrough;
 	case INTEL_FAM6_GRANITERAPIDS_X:
 	case INTEL_FAM6_GRANITERAPIDS_D:
 		pmem = true;
 		x86_pmu.late_ack = true;
-		memcpy(hw_cache_event_ids, spr_hw_cache_event_ids, sizeof(hw_cache_event_ids));
-		memcpy(hw_cache_extra_regs, spr_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
+		memcpy(hw_cache_event_ids, glc_hw_cache_event_ids, sizeof(hw_cache_event_ids));
+		memcpy(hw_cache_extra_regs, glc_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
 
-		x86_pmu.event_constraints = intel_spr_event_constraints;
-		x86_pmu.pebs_constraints = intel_spr_pebs_event_constraints;
+		x86_pmu.event_constraints = intel_glc_event_constraints;
+		x86_pmu.pebs_constraints = intel_glc_pebs_event_constraints;
 		if (!x86_pmu.extra_regs)
-			x86_pmu.extra_regs = intel_gnr_extra_regs;
-		x86_pmu.limit_period = spr_limit_period;
+			x86_pmu.extra_regs = intel_rwc_extra_regs;
+		x86_pmu.limit_period = glc_limit_period;
 		x86_pmu.pebs_ept = 1;
 		x86_pmu.pebs_aliases = NULL;
 		x86_pmu.pebs_prec_dist = true;
@@ -6586,13 +6586,13 @@ __init int intel_pmu_init(void)
 		x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
 
 		x86_pmu.hw_config = hsw_hw_config;
-		x86_pmu.get_event_constraints = spr_get_event_constraints;
+		x86_pmu.get_event_constraints = glc_get_event_constraints;
 		extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
 			hsw_format_attr : nhm_format_attr;
 		extra_skl_attr = skl_format_attr;
-		mem_attr = spr_events_attrs;
-		td_attr = spr_td_events_attrs;
-		tsx_attr = spr_tsx_events_attrs;
+		mem_attr = glc_events_attrs;
+		td_attr = glc_td_events_attrs;
+		tsx_attr = glc_tsx_events_attrs;
 		x86_pmu.rtm_abort_event = X86_CONFIG(.event=0xc9, .umask=0x04);
 		x86_pmu.lbr_pt_coexist = true;
 		intel_pmu_pebs_data_source_skl(pmem);
@@ -6642,7 +6642,7 @@ __init int intel_pmu_init(void)
 		x86_pmu.filter = intel_pmu_filter;
 		x86_pmu.get_event_constraints = adl_get_event_constraints;
 		x86_pmu.hw_config = adl_hw_config;
-		x86_pmu.limit_period = spr_limit_period;
+		x86_pmu.limit_period = glc_limit_period;
 		x86_pmu.get_hybrid_cpu_type = adl_get_hybrid_cpu_type;
 		/*
 		 * The rtm_abort_event is used to check whether to enable GPRs
@@ -6691,11 +6691,11 @@ __init int intel_pmu_init(void)
 		pmu->intel_cap.perf_metrics = 1;
 		pmu->intel_cap.pebs_output_pt_available = 0;
 
-		memcpy(pmu->hw_cache_event_ids, spr_hw_cache_event_ids, sizeof(pmu->hw_cache_event_ids));
-		memcpy(pmu->hw_cache_extra_regs, spr_hw_cache_extra_regs, sizeof(pmu->hw_cache_extra_regs));
-		pmu->event_constraints = intel_spr_event_constraints;
-		pmu->pebs_constraints = intel_spr_pebs_event_constraints;
-		pmu->extra_regs = intel_spr_extra_regs;
+		memcpy(pmu->hw_cache_event_ids, glc_hw_cache_event_ids, sizeof(pmu->hw_cache_event_ids));
+		memcpy(pmu->hw_cache_extra_regs, glc_hw_cache_extra_regs, sizeof(pmu->hw_cache_extra_regs));
+		pmu->event_constraints = intel_glc_event_constraints;
+		pmu->pebs_constraints = intel_glc_pebs_event_constraints;
+		pmu->extra_regs = intel_glc_extra_regs;
 
 		/* Initialize Atom core specific PerfMon capabilities.*/
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX];
@@ -6719,7 +6719,7 @@ __init int intel_pmu_init(void)
 		pmu->pebs_constraints = intel_grt_pebs_event_constraints;
 		pmu->extra_regs = intel_grt_extra_regs;
 		if (is_mtl(boot_cpu_data.x86_model)) {
-			x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX].extra_regs = intel_gnr_extra_regs;
+			x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX].extra_regs = intel_rwc_extra_regs;
 			x86_pmu.pebs_latency_data = mtl_latency_data_small;
 			extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
 				mtl_hybrid_extra_attr_rtm : mtl_hybrid_extra_attr;
diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index eb8dd8b..7464246 100644
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -1058,7 +1058,7 @@ struct event_constraint intel_icl_pebs_event_constraints[] = {
 	EVENT_CONSTRAINT_END
 };
 
-struct event_constraint intel_spr_pebs_event_constraints[] = {
+struct event_constraint intel_glc_pebs_event_constraints[] = {
 	INTEL_FLAGS_UEVENT_CONSTRAINT(0x100, 0x100000000ULL),	/* INST_RETIRED.PREC_DIST */
 	INTEL_FLAGS_UEVENT_CONSTRAINT(0x0400, 0x800000000ULL),
 
diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
index c8ba2be..96a427f 100644
--- a/arch/x86/events/perf_event.h
+++ b/arch/x86/events/perf_event.h
@@ -1521,7 +1521,7 @@ extern struct event_constraint intel_skl_pebs_event_constraints[];
 
 extern struct event_constraint intel_icl_pebs_event_constraints[];
 
-extern struct event_constraint intel_spr_pebs_event_constraints[];
+extern struct event_constraint intel_glc_pebs_event_constraints[];
 
 struct event_constraint *intel_pebs_constraints(struct perf_event *event);
 

[PATCH 2/6] perf/x86/intel: Factor out the initialization code for SPR

[kan.liang]

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

The SPR and ADL p-core have a similar uarch. Most of the initialization
code can be shared.

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

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
---
 arch/x86/events/intel/core.c | 49 +++++++++++++++++++-----------------
 1 file changed, 26 insertions(+), 23 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 6c98c272d4f8..e9e69401524a 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -5909,6 +5909,30 @@ static __always_inline bool is_mtl(u8 x86_model)
 	       (x86_model == INTEL_FAM6_METEORLAKE_L);
 }
 
+static __always_inline void intel_pmu_init_glc(struct pmu *pmu)
+{
+	x86_pmu.late_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.flags |= PMU_FL_HAS_RSP_1;
+	x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
+	x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
+	x86_pmu.rtm_abort_event = X86_CONFIG(.event=0xc9, .umask=0x04);
+	x86_pmu.lbr_pt_coexist = true;
+	x86_pmu.num_topdown_events = 8;
+	static_call_update(intel_pmu_update_topdown_event,
+			   &icl_update_topdown_event);
+	static_call_update(intel_pmu_set_topdown_event_period,
+			   &icl_set_topdown_event_period);
+
+	memcpy(hybrid_var(pmu, hw_cache_event_ids), glc_hw_cache_event_ids, sizeof(hw_cache_event_ids));
+	memcpy(hybrid_var(pmu, hw_cache_extra_regs), glc_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
+	hybrid(pmu, event_constraints) = intel_glc_event_constraints;
+	hybrid(pmu, pebs_constraints) = intel_glc_pebs_event_constraints;
+}
+
 __init int intel_pmu_init(void)
 {
 	struct attribute **extra_skl_attr = &empty_attrs;
@@ -6560,24 +6584,10 @@ __init int intel_pmu_init(void)
 		fallthrough;
 	case INTEL_FAM6_GRANITERAPIDS_X:
 	case INTEL_FAM6_GRANITERAPIDS_D:
-		pmem = true;
-		x86_pmu.late_ack = true;
-		memcpy(hw_cache_event_ids, glc_hw_cache_event_ids, sizeof(hw_cache_event_ids));
-		memcpy(hw_cache_extra_regs, glc_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
-
-		x86_pmu.event_constraints = intel_glc_event_constraints;
-		x86_pmu.pebs_constraints = intel_glc_pebs_event_constraints;
+		intel_pmu_init_glc(NULL);
 		if (!x86_pmu.extra_regs)
 			x86_pmu.extra_regs = intel_rwc_extra_regs;
-		x86_pmu.limit_period = glc_limit_period;
 		x86_pmu.pebs_ept = 1;
-		x86_pmu.pebs_aliases = NULL;
-		x86_pmu.pebs_prec_dist = true;
-		x86_pmu.pebs_block = true;
-		x86_pmu.flags |= PMU_FL_HAS_RSP_1;
-		x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
-		x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
-
 		x86_pmu.hw_config = hsw_hw_config;
 		x86_pmu.get_event_constraints = glc_get_event_constraints;
 		extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
@@ -6586,14 +6596,7 @@ __init int intel_pmu_init(void)
 		mem_attr = glc_events_attrs;
 		td_attr = glc_td_events_attrs;
 		tsx_attr = glc_tsx_events_attrs;
-		x86_pmu.rtm_abort_event = X86_CONFIG(.event=0xc9, .umask=0x04);
-		x86_pmu.lbr_pt_coexist = true;
-		intel_pmu_pebs_data_source_skl(pmem);
-		x86_pmu.num_topdown_events = 8;
-		static_call_update(intel_pmu_update_topdown_event,
-				   &icl_update_topdown_event);
-		static_call_update(intel_pmu_set_topdown_event_period,
-				   &icl_set_topdown_event_period);
+		intel_pmu_pebs_data_source_skl(true);
 		pr_cont("Sapphire Rapids events, ");
 		name = "sapphire_rapids";
 		break;
-- 
2.35.1

[tip: perf/core] perf/x86/intel: Factor out the initialization code for SPR

[tip-bot2 for Kan Liang]

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     0ba0c03528e918a8f6b5aa63d502fdc6a9d80fc7
Gitweb:        https://git.kernel.org/tip/0ba0c03528e918a8f6b5aa63d502fdc6a9d80fc7
Author:        Kan Liang <kan.liang@linux.intel.com>
AuthorDate:    Tue, 29 Aug 2023 05:58:02 -07:00
Committer:     Ingo Molnar <mingo@kernel.org>
CommitterDate: Tue, 29 Aug 2023 20:59:22 +02:00

perf/x86/intel: Factor out the initialization code for SPR

The SPR and ADL p-core have a similar uarch. Most of the initialization
code can be shared.

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

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230829125806.3016082-3-kan.liang@linux.intel.com
---
 arch/x86/events/intel/core.c | 49 ++++++++++++++++++-----------------
 1 file changed, 26 insertions(+), 23 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 93be19c..86aad32 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -5916,6 +5916,30 @@ static __always_inline bool is_mtl(u8 x86_model)
 	       (x86_model == INTEL_FAM6_METEORLAKE_L);
 }
 
+static __always_inline void intel_pmu_init_glc(struct pmu *pmu)
+{
+	x86_pmu.late_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.flags |= PMU_FL_HAS_RSP_1;
+	x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
+	x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
+	x86_pmu.rtm_abort_event = X86_CONFIG(.event=0xc9, .umask=0x04);
+	x86_pmu.lbr_pt_coexist = true;
+	x86_pmu.num_topdown_events = 8;
+	static_call_update(intel_pmu_update_topdown_event,
+			   &icl_update_topdown_event);
+	static_call_update(intel_pmu_set_topdown_event_period,
+			   &icl_set_topdown_event_period);
+
+	memcpy(hybrid_var(pmu, hw_cache_event_ids), glc_hw_cache_event_ids, sizeof(hw_cache_event_ids));
+	memcpy(hybrid_var(pmu, hw_cache_extra_regs), glc_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
+	hybrid(pmu, event_constraints) = intel_glc_event_constraints;
+	hybrid(pmu, pebs_constraints) = intel_glc_pebs_event_constraints;
+}
+
 __init int intel_pmu_init(void)
 {
 	struct attribute **extra_skl_attr = &empty_attrs;
@@ -6567,24 +6591,10 @@ __init int intel_pmu_init(void)
 		fallthrough;
 	case INTEL_FAM6_GRANITERAPIDS_X:
 	case INTEL_FAM6_GRANITERAPIDS_D:
-		pmem = true;
-		x86_pmu.late_ack = true;
-		memcpy(hw_cache_event_ids, glc_hw_cache_event_ids, sizeof(hw_cache_event_ids));
-		memcpy(hw_cache_extra_regs, glc_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
-
-		x86_pmu.event_constraints = intel_glc_event_constraints;
-		x86_pmu.pebs_constraints = intel_glc_pebs_event_constraints;
+		intel_pmu_init_glc(NULL);
 		if (!x86_pmu.extra_regs)
 			x86_pmu.extra_regs = intel_rwc_extra_regs;
-		x86_pmu.limit_period = glc_limit_period;
 		x86_pmu.pebs_ept = 1;
-		x86_pmu.pebs_aliases = NULL;
-		x86_pmu.pebs_prec_dist = true;
-		x86_pmu.pebs_block = true;
-		x86_pmu.flags |= PMU_FL_HAS_RSP_1;
-		x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
-		x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
-
 		x86_pmu.hw_config = hsw_hw_config;
 		x86_pmu.get_event_constraints = glc_get_event_constraints;
 		extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
@@ -6593,14 +6603,7 @@ __init int intel_pmu_init(void)
 		mem_attr = glc_events_attrs;
 		td_attr = glc_td_events_attrs;
 		tsx_attr = glc_tsx_events_attrs;
-		x86_pmu.rtm_abort_event = X86_CONFIG(.event=0xc9, .umask=0x04);
-		x86_pmu.lbr_pt_coexist = true;
-		intel_pmu_pebs_data_source_skl(pmem);
-		x86_pmu.num_topdown_events = 8;
-		static_call_update(intel_pmu_update_topdown_event,
-				   &icl_update_topdown_event);
-		static_call_update(intel_pmu_set_topdown_event_period,
-				   &icl_set_topdown_event_period);
+		intel_pmu_pebs_data_source_skl(true);
 		pr_cont("Sapphire Rapids events, ");
 		name = "sapphire_rapids";
 		break;

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

[kan.liang]

From: Kan Liang <kan.liang@linux.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@linux.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

[tip: perf/core] perf/x86/intel: Factor out the initialization code for ADL e-core

[tip-bot2 for Kan Liang]

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     d87d221f854b62f5e8026505497d33404ef6050c
Gitweb:        https://git.kernel.org/tip/d87d221f854b62f5e8026505497d33404ef6050c
Author:        Kan Liang <kan.liang@linux.intel.com>
AuthorDate:    Tue, 29 Aug 2023 05:58:03 -07:00
Committer:     Ingo Molnar <mingo@kernel.org>
CommitterDate: Tue, 29 Aug 2023 20:59:22 +02:00

perf/x86/intel: Factor out the initialization code for ADL e-core

>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@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230829125806.3016082-4-kan.liang@linux.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 86aad32..95ac7bb 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -5940,6 +5940,25 @@ 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;
@@ -6218,28 +6237,10 @@ __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;
@@ -6249,28 +6250,11 @@ __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;

[PATCH 4/6] perf/x86/intel: Apply the common initialization code for ADL

[kan.liang]

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

Use the intel_pmu_init_glc() and intel_pmu_init_grt() to replace the
duplicate code for ADL.

The current code already checks the PERF_X86_EVENT_TOPDOWN flag before
invoking the Topdown metrics functions. (The PERF_X86_EVENT_TOPDOWN flag
is to indicate the Topdown metric feature, which is only available for
the p-core.) Drop the unnecessary adl_set_topdown_event_period() and
adl_update_topdown_event().

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
---
 arch/x86/events/intel/core.c | 53 ++----------------------------------
 1 file changed, 2 insertions(+), 51 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index cffaa97035a0..3537b62a4f17 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -2556,16 +2556,6 @@ static int icl_set_topdown_event_period(struct perf_event *event)
 	return 0;
 }
 
-static int adl_set_topdown_event_period(struct perf_event *event)
-{
-	struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
-
-	if (pmu->cpu_type != hybrid_big)
-		return 0;
-
-	return icl_set_topdown_event_period(event);
-}
-
 DEFINE_STATIC_CALL(intel_pmu_set_topdown_event_period, x86_perf_event_set_period);
 
 static inline u64 icl_get_metrics_event_value(u64 metric, u64 slots, int idx)
@@ -2708,16 +2698,6 @@ static u64 icl_update_topdown_event(struct perf_event *event)
 						 x86_pmu.num_topdown_events - 1);
 }
 
-static u64 adl_update_topdown_event(struct perf_event *event)
-{
-	struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
-
-	if (pmu->cpu_type != hybrid_big)
-		return 0;
-
-	return icl_update_topdown_event(event);
-}
-
 DEFINE_STATIC_CALL(intel_pmu_update_topdown_event, x86_perf_event_update);
 
 static void intel_pmu_read_topdown_event(struct perf_event *event)
@@ -6605,32 +6585,11 @@ __init int intel_pmu_init(void)
 		static_branch_enable(&perf_is_hybrid);
 		x86_pmu.num_hybrid_pmus = X86_HYBRID_NUM_PMUS;
 
-		x86_pmu.pebs_aliases = NULL;
-		x86_pmu.pebs_prec_dist = true;
-		x86_pmu.pebs_block = true;
-		x86_pmu.flags |= PMU_FL_HAS_RSP_1;
-		x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
-		x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
-		x86_pmu.lbr_pt_coexist = true;
 		x86_pmu.pebs_latency_data = adl_latency_data_small;
-		x86_pmu.num_topdown_events = 8;
-		static_call_update(intel_pmu_update_topdown_event,
-				   &adl_update_topdown_event);
-		static_call_update(intel_pmu_set_topdown_event_period,
-				   &adl_set_topdown_event_period);
-
 		x86_pmu.filter = intel_pmu_filter;
 		x86_pmu.get_event_constraints = adl_get_event_constraints;
 		x86_pmu.hw_config = adl_hw_config;
-		x86_pmu.limit_period = glc_limit_period;
 		x86_pmu.get_hybrid_cpu_type = adl_get_hybrid_cpu_type;
-		/*
-		 * The rtm_abort_event is used to check whether to enable GPRs
-		 * for the RTM abort event. Atom doesn't have the RTM abort
-		 * event. There is no harmful to set it in the common
-		 * x86_pmu.rtm_abort_event.
-		 */
-		x86_pmu.rtm_abort_event = X86_CONFIG(.event=0xc9, .umask=0x04);
 
 		td_attr = adl_hybrid_events_attrs;
 		mem_attr = adl_hybrid_mem_attrs;
@@ -6642,6 +6601,7 @@ __init int intel_pmu_init(void)
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX];
 		pmu->name = "cpu_core";
 		pmu->cpu_type = hybrid_big;
+		intel_pmu_init_glc(&pmu->pmu);
 		pmu->late_ack = true;
 		if (cpu_feature_enabled(X86_FEATURE_HYBRID_CPU)) {
 			pmu->num_counters = x86_pmu.num_counters + 2;
@@ -6671,16 +6631,13 @@ __init int intel_pmu_init(void)
 		pmu->intel_cap.perf_metrics = 1;
 		pmu->intel_cap.pebs_output_pt_available = 0;
 
-		memcpy(pmu->hw_cache_event_ids, glc_hw_cache_event_ids, sizeof(pmu->hw_cache_event_ids));
-		memcpy(pmu->hw_cache_extra_regs, glc_hw_cache_extra_regs, sizeof(pmu->hw_cache_extra_regs));
-		pmu->event_constraints = intel_glc_event_constraints;
-		pmu->pebs_constraints = intel_glc_pebs_event_constraints;
 		pmu->extra_regs = intel_glc_extra_regs;
 
 		/* Initialize Atom core specific PerfMon capabilities.*/
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX];
 		pmu->name = "cpu_atom";
 		pmu->cpu_type = hybrid_small;
+		intel_pmu_init_grt(&pmu->pmu);
 		pmu->mid_ack = true;
 		pmu->num_counters = x86_pmu.num_counters;
 		pmu->num_counters_fixed = x86_pmu.num_counters_fixed;
@@ -6692,12 +6649,6 @@ __init int intel_pmu_init(void)
 		pmu->intel_cap.perf_metrics = 0;
 		pmu->intel_cap.pebs_output_pt_available = 1;
 
-		memcpy(pmu->hw_cache_event_ids, glp_hw_cache_event_ids, sizeof(pmu->hw_cache_event_ids));
-		memcpy(pmu->hw_cache_extra_regs, tnt_hw_cache_extra_regs, sizeof(pmu->hw_cache_extra_regs));
-		pmu->hw_cache_event_ids[C(ITLB)][C(OP_READ)][C(RESULT_ACCESS)] = -1;
-		pmu->event_constraints = intel_slm_event_constraints;
-		pmu->pebs_constraints = intel_grt_pebs_event_constraints;
-		pmu->extra_regs = intel_grt_extra_regs;
 		if (is_mtl(boot_cpu_data.x86_model)) {
 			x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX].extra_regs = intel_rwc_extra_regs;
 			x86_pmu.pebs_latency_data = mtl_latency_data_small;
-- 
2.35.1

[tip: perf/core] perf/x86/intel: Apply the common initialization code for ADL

[tip-bot2 for Kan Liang]

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     299a5fc8e783eed705015e83e381912dbbf3eabc
Gitweb:        https://git.kernel.org/tip/299a5fc8e783eed705015e83e381912dbbf3eabc
Author:        Kan Liang <kan.liang@linux.intel.com>
AuthorDate:    Tue, 29 Aug 2023 05:58:04 -07:00
Committer:     Ingo Molnar <mingo@kernel.org>
CommitterDate: Tue, 29 Aug 2023 20:59:23 +02:00

perf/x86/intel: Apply the common initialization code for ADL

Use the intel_pmu_init_glc() and intel_pmu_init_grt() to replace the
duplicate code for ADL.

The current code already checks the PERF_X86_EVENT_TOPDOWN flag before
invoking the Topdown metrics functions. (The PERF_X86_EVENT_TOPDOWN flag
is to indicate the Topdown metric feature, which is only available for
the p-core.) Drop the unnecessary adl_set_topdown_event_period() and
adl_update_topdown_event().

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230829125806.3016082-5-kan.liang@linux.intel.com
---
 arch/x86/events/intel/core.c | 53 +----------------------------------
 1 file changed, 2 insertions(+), 51 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 95ac7bb..a5ba491 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -2556,16 +2556,6 @@ static int icl_set_topdown_event_period(struct perf_event *event)
 	return 0;
 }
 
-static int adl_set_topdown_event_period(struct perf_event *event)
-{
-	struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
-
-	if (pmu->cpu_type != hybrid_big)
-		return 0;
-
-	return icl_set_topdown_event_period(event);
-}
-
 DEFINE_STATIC_CALL(intel_pmu_set_topdown_event_period, x86_perf_event_set_period);
 
 static inline u64 icl_get_metrics_event_value(u64 metric, u64 slots, int idx)
@@ -2708,16 +2698,6 @@ static u64 icl_update_topdown_event(struct perf_event *event)
 						 x86_pmu.num_topdown_events - 1);
 }
 
-static u64 adl_update_topdown_event(struct perf_event *event)
-{
-	struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
-
-	if (pmu->cpu_type != hybrid_big)
-		return 0;
-
-	return icl_update_topdown_event(event);
-}
-
 DEFINE_STATIC_CALL(intel_pmu_update_topdown_event, x86_perf_event_update);
 
 static void intel_pmu_read_topdown_event(struct perf_event *event)
@@ -6612,32 +6592,11 @@ __init int intel_pmu_init(void)
 		static_branch_enable(&perf_is_hybrid);
 		x86_pmu.num_hybrid_pmus = X86_HYBRID_NUM_PMUS;
 
-		x86_pmu.pebs_aliases = NULL;
-		x86_pmu.pebs_prec_dist = true;
-		x86_pmu.pebs_block = true;
-		x86_pmu.flags |= PMU_FL_HAS_RSP_1;
-		x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
-		x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
-		x86_pmu.lbr_pt_coexist = true;
 		x86_pmu.pebs_latency_data = adl_latency_data_small;
-		x86_pmu.num_topdown_events = 8;
-		static_call_update(intel_pmu_update_topdown_event,
-				   &adl_update_topdown_event);
-		static_call_update(intel_pmu_set_topdown_event_period,
-				   &adl_set_topdown_event_period);
-
 		x86_pmu.filter = intel_pmu_filter;
 		x86_pmu.get_event_constraints = adl_get_event_constraints;
 		x86_pmu.hw_config = adl_hw_config;
-		x86_pmu.limit_period = glc_limit_period;
 		x86_pmu.get_hybrid_cpu_type = adl_get_hybrid_cpu_type;
-		/*
-		 * The rtm_abort_event is used to check whether to enable GPRs
-		 * for the RTM abort event. Atom doesn't have the RTM abort
-		 * event. There is no harmful to set it in the common
-		 * x86_pmu.rtm_abort_event.
-		 */
-		x86_pmu.rtm_abort_event = X86_CONFIG(.event=0xc9, .umask=0x04);
 
 		td_attr = adl_hybrid_events_attrs;
 		mem_attr = adl_hybrid_mem_attrs;
@@ -6649,6 +6608,7 @@ __init int intel_pmu_init(void)
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX];
 		pmu->name = "cpu_core";
 		pmu->cpu_type = hybrid_big;
+		intel_pmu_init_glc(&pmu->pmu);
 		pmu->late_ack = true;
 		if (cpu_feature_enabled(X86_FEATURE_HYBRID_CPU)) {
 			pmu->num_counters = x86_pmu.num_counters + 2;
@@ -6678,16 +6638,13 @@ __init int intel_pmu_init(void)
 		pmu->intel_cap.perf_metrics = 1;
 		pmu->intel_cap.pebs_output_pt_available = 0;
 
-		memcpy(pmu->hw_cache_event_ids, glc_hw_cache_event_ids, sizeof(pmu->hw_cache_event_ids));
-		memcpy(pmu->hw_cache_extra_regs, glc_hw_cache_extra_regs, sizeof(pmu->hw_cache_extra_regs));
-		pmu->event_constraints = intel_glc_event_constraints;
-		pmu->pebs_constraints = intel_glc_pebs_event_constraints;
 		pmu->extra_regs = intel_glc_extra_regs;
 
 		/* Initialize Atom core specific PerfMon capabilities.*/
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX];
 		pmu->name = "cpu_atom";
 		pmu->cpu_type = hybrid_small;
+		intel_pmu_init_grt(&pmu->pmu);
 		pmu->mid_ack = true;
 		pmu->num_counters = x86_pmu.num_counters;
 		pmu->num_counters_fixed = x86_pmu.num_counters_fixed;
@@ -6699,12 +6656,6 @@ __init int intel_pmu_init(void)
 		pmu->intel_cap.perf_metrics = 0;
 		pmu->intel_cap.pebs_output_pt_available = 1;
 
-		memcpy(pmu->hw_cache_event_ids, glp_hw_cache_event_ids, sizeof(pmu->hw_cache_event_ids));
-		memcpy(pmu->hw_cache_extra_regs, tnt_hw_cache_extra_regs, sizeof(pmu->hw_cache_extra_regs));
-		pmu->hw_cache_event_ids[C(ITLB)][C(OP_READ)][C(RESULT_ACCESS)] = -1;
-		pmu->event_constraints = intel_slm_event_constraints;
-		pmu->pebs_constraints = intel_grt_pebs_event_constraints;
-		pmu->extra_regs = intel_grt_extra_regs;
 		if (is_mtl(boot_cpu_data.x86_model)) {
 			x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX].extra_regs = intel_rwc_extra_regs;
 			x86_pmu.pebs_latency_data = mtl_latency_data_small;

[PATCH 5/6] perf/x86/intel: Cleanup the hybrid CPU type

[kan.liang]

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

There is a fairly long list of grievances about the current code. The
main beefs:

   1. hybrid_big_small assumes that the *HARDWARE* (CPUID) provided
      core types are a bitmap. They are not. If Intel happened to
      make a core type of 0xff, hilarity would ensue.
   2. adl_get_hybrid_cpu_type() utterly inscrutable.  There are
      precisely zero comments and zero changelog about what it is
      attempting to do.

According to Kan, the adl_get_hybrid_cpu_type() is there because some
Alder Lake (ADL) CPUs can do some silly things. Some ADL models are
*supposed* to be hybrid CPUs with big and little cores, but there are
some SKUs that only have big cores. CPUID(0x1a) on those CPUs does
not say that the CPUs are big cores. It apparently just returns 0x0.
It confuses perf because it expects to see either 0x40 (Core) or
0x20 (Atom).

The perf workaround for this is to watch for a CPU core saying it is
type 0x0. If that happens on an Alder Lake, it calls
x86_pmu.get_hybrid_cpu_type() and just assumes that the core is a
Core (0x40) CPU.

To fix up the mess, separate out the CPU types and the 'pmu' types.
This allows 'hybrid_pmu_type' bitmaps without worrying that some
future CPU type will set multiple bits.

Since the types are now separate, add a function to glue them back
together again. Actual comment on the situation in the glue
function (find_hybrid_pmu_for_cpu()).

Also, give ->get_hybrid_cpu_type() a real return type and make it
clear that it is overriding the *CPU* type, not the PMU type.

Rename cpu_type to pmu_type in the struct x86_hybrid_pmu to reflect the
change.

Originally-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
---
 arch/x86/events/core.c       |  6 ++--
 arch/x86/events/intel/core.c | 69 ++++++++++++++++++++++++------------
 arch/x86/events/intel/ds.c   |  2 +-
 arch/x86/events/perf_event.h | 35 ++++++++++--------
 4 files changed, 72 insertions(+), 40 deletions(-)

diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index 185f902e5f28..40ad1425ffa2 100644
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -1887,9 +1887,9 @@ ssize_t events_hybrid_sysfs_show(struct device *dev,
 
 	str = pmu_attr->event_str;
 	for (i = 0; i < x86_pmu.num_hybrid_pmus; i++) {
-		if (!(x86_pmu.hybrid_pmu[i].cpu_type & pmu_attr->pmu_type))
+		if (!(x86_pmu.hybrid_pmu[i].pmu_type & pmu_attr->pmu_type))
 			continue;
-		if (x86_pmu.hybrid_pmu[i].cpu_type & pmu->cpu_type) {
+		if (x86_pmu.hybrid_pmu[i].pmu_type & pmu->pmu_type) {
 			next_str = strchr(str, ';');
 			if (next_str)
 				return snprintf(page, next_str - str + 1, "%s", str);
@@ -2169,7 +2169,7 @@ static int __init init_hw_perf_events(void)
 			hybrid_pmu->pmu.capabilities |= PERF_PMU_CAP_EXTENDED_HW_TYPE;
 
 			err = perf_pmu_register(&hybrid_pmu->pmu, hybrid_pmu->name,
-						(hybrid_pmu->cpu_type == hybrid_big) ? PERF_TYPE_RAW : -1);
+						(hybrid_pmu->pmu_type == hybrid_big) ? PERF_TYPE_RAW : -1);
 			if (err)
 				break;
 		}
diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 3537b62a4f17..bfa0649c31f4 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -3849,7 +3849,7 @@ static inline bool require_mem_loads_aux_event(struct perf_event *event)
 		return false;
 
 	if (is_hybrid())
-		return hybrid_pmu(event->pmu)->cpu_type == hybrid_big;
+		return hybrid_pmu(event->pmu)->pmu_type == hybrid_big;
 
 	return true;
 }
@@ -4334,9 +4334,9 @@ adl_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
 {
 	struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
 
-	if (pmu->cpu_type == hybrid_big)
+	if (pmu->pmu_type == hybrid_big)
 		return glc_get_event_constraints(cpuc, idx, event);
-	else if (pmu->cpu_type == hybrid_small)
+	else if (pmu->pmu_type == hybrid_small)
 		return tnt_get_event_constraints(cpuc, idx, event);
 
 	WARN_ON(1);
@@ -4406,9 +4406,9 @@ mtl_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
 {
 	struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
 
-	if (pmu->cpu_type == hybrid_big)
+	if (pmu->pmu_type == hybrid_big)
 		return rwc_get_event_constraints(cpuc, idx, event);
-	if (pmu->cpu_type == hybrid_small)
+	if (pmu->pmu_type == hybrid_small)
 		return cmt_get_event_constraints(cpuc, idx, event);
 
 	WARN_ON(1);
@@ -4419,18 +4419,18 @@ static int adl_hw_config(struct perf_event *event)
 {
 	struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
 
-	if (pmu->cpu_type == hybrid_big)
+	if (pmu->pmu_type == hybrid_big)
 		return hsw_hw_config(event);
-	else if (pmu->cpu_type == hybrid_small)
+	else if (pmu->pmu_type == hybrid_small)
 		return intel_pmu_hw_config(event);
 
 	WARN_ON(1);
 	return -EOPNOTSUPP;
 }
 
-static u8 adl_get_hybrid_cpu_type(void)
+static enum hybrid_cpu_type adl_get_hybrid_cpu_type(void)
 {
-	return hybrid_big;
+	return HYBRID_INTEL_CORE;
 }
 
 /*
@@ -4606,22 +4606,47 @@ static void update_pmu_cap(struct x86_hybrid_pmu *pmu)
 	}
 }
 
-static bool init_hybrid_pmu(int cpu)
+static struct x86_hybrid_pmu *find_hybrid_pmu_for_cpu(void)
 {
-	struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
 	u8 cpu_type = get_this_hybrid_cpu_type();
-	struct x86_hybrid_pmu *pmu = NULL;
 	int i;
 
-	if (!cpu_type && x86_pmu.get_hybrid_cpu_type)
-		cpu_type = x86_pmu.get_hybrid_cpu_type();
+	/*
+	 * This is running on a CPU model that is known to have hybrid
+	 * configurations. But the CPU told us it is not hybrid, shame
+	 * on it. There should be a fixup function provided for these
+	 * troublesome cpus (->get_hybrid_cpu_type).
+	 */
+	if (cpu_type == HYBRID_INTEL_NONE) {
+		if (x86_pmu.get_hybrid_cpu_type)
+			cpu_type = x86_pmu.get_hybrid_cpu_type();
+		else
+			return NULL;
+	}
 
+	/*
+	 * This essentially just maps between the 'hybrid_cpu_type'
+	 * and 'hybrid_pmu_type' enums:
+	 */
 	for (i = 0; i < x86_pmu.num_hybrid_pmus; i++) {
-		if (x86_pmu.hybrid_pmu[i].cpu_type == cpu_type) {
-			pmu = &x86_pmu.hybrid_pmu[i];
-			break;
-		}
+		enum hybrid_pmu_type pmu_type = x86_pmu.hybrid_pmu[i].pmu_type;
+
+		if (cpu_type == HYBRID_INTEL_CORE &&
+		    pmu_type == hybrid_big)
+			return &x86_pmu.hybrid_pmu[i];
+		if (cpu_type == HYBRID_INTEL_ATOM &&
+		    pmu_type == hybrid_small)
+			return &x86_pmu.hybrid_pmu[i];
 	}
+
+	return NULL;
+}
+
+static bool init_hybrid_pmu(int cpu)
+{
+	struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
+	struct x86_hybrid_pmu *pmu = find_hybrid_pmu_for_cpu();
+
 	if (WARN_ON_ONCE(!pmu || (pmu->pmu.type == -1))) {
 		cpuc->pmu = NULL;
 		return false;
@@ -5672,7 +5697,7 @@ static bool is_attr_for_this_pmu(struct kobject *kobj, struct attribute *attr)
 	struct perf_pmu_events_hybrid_attr *pmu_attr =
 		container_of(attr, struct perf_pmu_events_hybrid_attr, attr.attr);
 
-	return pmu->cpu_type & pmu_attr->pmu_type;
+	return pmu->pmu_type & pmu_attr->pmu_type;
 }
 
 static umode_t hybrid_events_is_visible(struct kobject *kobj,
@@ -5709,7 +5734,7 @@ static umode_t hybrid_format_is_visible(struct kobject *kobj,
 		container_of(attr, struct perf_pmu_format_hybrid_attr, attr.attr);
 	int cpu = hybrid_find_supported_cpu(pmu);
 
-	return (cpu >= 0) && (pmu->cpu_type & pmu_attr->pmu_type) ? attr->mode : 0;
+	return (cpu >= 0) && (pmu->pmu_type & pmu_attr->pmu_type) ? attr->mode : 0;
 }
 
 static struct attribute_group hybrid_group_events_td  = {
@@ -6600,7 +6625,7 @@ __init int intel_pmu_init(void)
 		/* Initialize big core specific PerfMon capabilities.*/
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX];
 		pmu->name = "cpu_core";
-		pmu->cpu_type = hybrid_big;
+		pmu->pmu_type = hybrid_big;
 		intel_pmu_init_glc(&pmu->pmu);
 		pmu->late_ack = true;
 		if (cpu_feature_enabled(X86_FEATURE_HYBRID_CPU)) {
@@ -6636,7 +6661,7 @@ __init int intel_pmu_init(void)
 		/* Initialize Atom core specific PerfMon capabilities.*/
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX];
 		pmu->name = "cpu_atom";
-		pmu->cpu_type = hybrid_small;
+		pmu->pmu_type = hybrid_small;
 		intel_pmu_init_grt(&pmu->pmu);
 		pmu->mid_ack = true;
 		pmu->num_counters = x86_pmu.num_counters;
diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index 74642469ca7b..bf97ab904d40 100644
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -261,7 +261,7 @@ static u64 __adl_latency_data_small(struct perf_event *event, u64 status,
 {
 	u64 val;
 
-	WARN_ON_ONCE(hybrid_pmu(event->pmu)->cpu_type == hybrid_big);
+	WARN_ON_ONCE(hybrid_pmu(event->pmu)->pmu_type == hybrid_big);
 
 	dse &= PERF_PEBS_DATA_SOURCE_MASK;
 	val = hybrid_var(event->pmu, pebs_data_source)[dse];
diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
index 96a427fc55cf..53dd5d495ba6 100644
--- a/arch/x86/events/perf_event.h
+++ b/arch/x86/events/perf_event.h
@@ -652,10 +652,29 @@ enum {
 #define PERF_PEBS_DATA_SOURCE_MAX	0x10
 #define PERF_PEBS_DATA_SOURCE_MASK	(PERF_PEBS_DATA_SOURCE_MAX - 1)
 
+enum hybrid_cpu_type {
+	HYBRID_INTEL_NONE,
+	HYBRID_INTEL_ATOM	= 0x20,
+	HYBRID_INTEL_CORE	= 0x40,
+};
+
+enum hybrid_pmu_type {
+	not_hybrid,
+	hybrid_small		= BIT(0),
+	hybrid_big		= BIT(1),
+
+	hybrid_big_small	= hybrid_big | hybrid_small, /* only used for matching */
+};
+
+#define X86_HYBRID_PMU_ATOM_IDX		0
+#define X86_HYBRID_PMU_CORE_IDX		1
+
+#define X86_HYBRID_NUM_PMUS		2
+
 struct x86_hybrid_pmu {
 	struct pmu			pmu;
 	const char			*name;
-	u8				cpu_type;
+	enum hybrid_pmu_type		pmu_type;
 	cpumask_t			supported_cpus;
 	union perf_capabilities		intel_cap;
 	u64				intel_ctrl;
@@ -721,18 +740,6 @@ extern struct static_key_false perf_is_hybrid;
 	__Fp;						\
 })
 
-enum hybrid_pmu_type {
-	hybrid_big		= 0x40,
-	hybrid_small		= 0x20,
-
-	hybrid_big_small	= hybrid_big | hybrid_small,
-};
-
-#define X86_HYBRID_PMU_ATOM_IDX		0
-#define X86_HYBRID_PMU_CORE_IDX		1
-
-#define X86_HYBRID_NUM_PMUS		2
-
 /*
  * struct x86_pmu - generic x86 pmu
  */
@@ -940,7 +947,7 @@ struct x86_pmu {
 	 */
 	int				num_hybrid_pmus;
 	struct x86_hybrid_pmu		*hybrid_pmu;
-	u8 (*get_hybrid_cpu_type)	(void);
+	enum hybrid_cpu_type (*get_hybrid_cpu_type)	(void);
 };
 
 struct x86_perf_task_context_opt {
-- 
2.35.1

[tip: perf/core] perf/x86/intel: Clean up the hybrid CPU type handling code

[tip-bot2 for Kan Liang]

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     b0560bfd4b70277a4936c82e50e940aa253c95bf
Gitweb:        https://git.kernel.org/tip/b0560bfd4b70277a4936c82e50e940aa253c95bf
Author:        Kan Liang <kan.liang@linux.intel.com>
AuthorDate:    Tue, 29 Aug 2023 05:58:05 -07:00
Committer:     Ingo Molnar <mingo@kernel.org>
CommitterDate: Tue, 29 Aug 2023 20:59:23 +02:00

perf/x86/intel: Clean up the hybrid CPU type handling code

There is a fairly long list of grievances about the current code. The
main beefs:

   1. hybrid_big_small assumes that the *HARDWARE* (CPUID) provided
      core types are a bitmap. They are not. If Intel happened to
      make a core type of 0xff, hilarity would ensue.
   2. adl_get_hybrid_cpu_type() utterly inscrutable.  There are
      precisely zero comments and zero changelog about what it is
      attempting to do.

According to Kan, the adl_get_hybrid_cpu_type() is there because some
Alder Lake (ADL) CPUs can do some silly things. Some ADL models are
*supposed* to be hybrid CPUs with big and little cores, but there are
some SKUs that only have big cores. CPUID(0x1a) on those CPUs does
not say that the CPUs are big cores. It apparently just returns 0x0.
It confuses perf because it expects to see either 0x40 (Core) or
0x20 (Atom).

The perf workaround for this is to watch for a CPU core saying it is
type 0x0. If that happens on an Alder Lake, it calls
x86_pmu.get_hybrid_cpu_type() and just assumes that the core is a
Core (0x40) CPU.

To fix up the mess, separate out the CPU types and the 'pmu' types.
This allows 'hybrid_pmu_type' bitmaps without worrying that some
future CPU type will set multiple bits.

Since the types are now separate, add a function to glue them back
together again. Actual comment on the situation in the glue
function (find_hybrid_pmu_for_cpu()).

Also, give ->get_hybrid_cpu_type() a real return type and make it
clear that it is overriding the *CPU* type, not the PMU type.

Rename cpu_type to pmu_type in the struct x86_hybrid_pmu to reflect the
change.

Originally-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230829125806.3016082-6-kan.liang@linux.intel.com
---
 arch/x86/events/core.c       |  6 +--
 arch/x86/events/intel/core.c | 69 +++++++++++++++++++++++------------
 arch/x86/events/intel/ds.c   |  2 +-
 arch/x86/events/perf_event.h | 35 ++++++++++--------
 4 files changed, 72 insertions(+), 40 deletions(-)

diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index 185f902..40ad142 100644
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -1887,9 +1887,9 @@ ssize_t events_hybrid_sysfs_show(struct device *dev,
 
 	str = pmu_attr->event_str;
 	for (i = 0; i < x86_pmu.num_hybrid_pmus; i++) {
-		if (!(x86_pmu.hybrid_pmu[i].cpu_type & pmu_attr->pmu_type))
+		if (!(x86_pmu.hybrid_pmu[i].pmu_type & pmu_attr->pmu_type))
 			continue;
-		if (x86_pmu.hybrid_pmu[i].cpu_type & pmu->cpu_type) {
+		if (x86_pmu.hybrid_pmu[i].pmu_type & pmu->pmu_type) {
 			next_str = strchr(str, ';');
 			if (next_str)
 				return snprintf(page, next_str - str + 1, "%s", str);
@@ -2169,7 +2169,7 @@ static int __init init_hw_perf_events(void)
 			hybrid_pmu->pmu.capabilities |= PERF_PMU_CAP_EXTENDED_HW_TYPE;
 
 			err = perf_pmu_register(&hybrid_pmu->pmu, hybrid_pmu->name,
-						(hybrid_pmu->cpu_type == hybrid_big) ? PERF_TYPE_RAW : -1);
+						(hybrid_pmu->pmu_type == hybrid_big) ? PERF_TYPE_RAW : -1);
 			if (err)
 				break;
 		}
diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index a5ba491..9ac2e12 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -3849,7 +3849,7 @@ static inline bool require_mem_loads_aux_event(struct perf_event *event)
 		return false;
 
 	if (is_hybrid())
-		return hybrid_pmu(event->pmu)->cpu_type == hybrid_big;
+		return hybrid_pmu(event->pmu)->pmu_type == hybrid_big;
 
 	return true;
 }
@@ -4341,9 +4341,9 @@ adl_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
 {
 	struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
 
-	if (pmu->cpu_type == hybrid_big)
+	if (pmu->pmu_type == hybrid_big)
 		return glc_get_event_constraints(cpuc, idx, event);
-	else if (pmu->cpu_type == hybrid_small)
+	else if (pmu->pmu_type == hybrid_small)
 		return tnt_get_event_constraints(cpuc, idx, event);
 
 	WARN_ON(1);
@@ -4413,9 +4413,9 @@ mtl_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
 {
 	struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
 
-	if (pmu->cpu_type == hybrid_big)
+	if (pmu->pmu_type == hybrid_big)
 		return rwc_get_event_constraints(cpuc, idx, event);
-	if (pmu->cpu_type == hybrid_small)
+	if (pmu->pmu_type == hybrid_small)
 		return cmt_get_event_constraints(cpuc, idx, event);
 
 	WARN_ON(1);
@@ -4426,18 +4426,18 @@ static int adl_hw_config(struct perf_event *event)
 {
 	struct x86_hybrid_pmu *pmu = hybrid_pmu(event->pmu);
 
-	if (pmu->cpu_type == hybrid_big)
+	if (pmu->pmu_type == hybrid_big)
 		return hsw_hw_config(event);
-	else if (pmu->cpu_type == hybrid_small)
+	else if (pmu->pmu_type == hybrid_small)
 		return intel_pmu_hw_config(event);
 
 	WARN_ON(1);
 	return -EOPNOTSUPP;
 }
 
-static u8 adl_get_hybrid_cpu_type(void)
+static enum hybrid_cpu_type adl_get_hybrid_cpu_type(void)
 {
-	return hybrid_big;
+	return HYBRID_INTEL_CORE;
 }
 
 /*
@@ -4613,22 +4613,47 @@ static void update_pmu_cap(struct x86_hybrid_pmu *pmu)
 	}
 }
 
-static bool init_hybrid_pmu(int cpu)
+static struct x86_hybrid_pmu *find_hybrid_pmu_for_cpu(void)
 {
-	struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
 	u8 cpu_type = get_this_hybrid_cpu_type();
-	struct x86_hybrid_pmu *pmu = NULL;
 	int i;
 
-	if (!cpu_type && x86_pmu.get_hybrid_cpu_type)
-		cpu_type = x86_pmu.get_hybrid_cpu_type();
+	/*
+	 * This is running on a CPU model that is known to have hybrid
+	 * configurations. But the CPU told us it is not hybrid, shame
+	 * on it. There should be a fixup function provided for these
+	 * troublesome CPUs (->get_hybrid_cpu_type).
+	 */
+	if (cpu_type == HYBRID_INTEL_NONE) {
+		if (x86_pmu.get_hybrid_cpu_type)
+			cpu_type = x86_pmu.get_hybrid_cpu_type();
+		else
+			return NULL;
+	}
 
+	/*
+	 * This essentially just maps between the 'hybrid_cpu_type'
+	 * and 'hybrid_pmu_type' enums:
+	 */
 	for (i = 0; i < x86_pmu.num_hybrid_pmus; i++) {
-		if (x86_pmu.hybrid_pmu[i].cpu_type == cpu_type) {
-			pmu = &x86_pmu.hybrid_pmu[i];
-			break;
-		}
+		enum hybrid_pmu_type pmu_type = x86_pmu.hybrid_pmu[i].pmu_type;
+
+		if (cpu_type == HYBRID_INTEL_CORE &&
+		    pmu_type == hybrid_big)
+			return &x86_pmu.hybrid_pmu[i];
+		if (cpu_type == HYBRID_INTEL_ATOM &&
+		    pmu_type == hybrid_small)
+			return &x86_pmu.hybrid_pmu[i];
 	}
+
+	return NULL;
+}
+
+static bool init_hybrid_pmu(int cpu)
+{
+	struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
+	struct x86_hybrid_pmu *pmu = find_hybrid_pmu_for_cpu();
+
 	if (WARN_ON_ONCE(!pmu || (pmu->pmu.type == -1))) {
 		cpuc->pmu = NULL;
 		return false;
@@ -5679,7 +5704,7 @@ static bool is_attr_for_this_pmu(struct kobject *kobj, struct attribute *attr)
 	struct perf_pmu_events_hybrid_attr *pmu_attr =
 		container_of(attr, struct perf_pmu_events_hybrid_attr, attr.attr);
 
-	return pmu->cpu_type & pmu_attr->pmu_type;
+	return pmu->pmu_type & pmu_attr->pmu_type;
 }
 
 static umode_t hybrid_events_is_visible(struct kobject *kobj,
@@ -5716,7 +5741,7 @@ static umode_t hybrid_format_is_visible(struct kobject *kobj,
 		container_of(attr, struct perf_pmu_format_hybrid_attr, attr.attr);
 	int cpu = hybrid_find_supported_cpu(pmu);
 
-	return (cpu >= 0) && (pmu->cpu_type & pmu_attr->pmu_type) ? attr->mode : 0;
+	return (cpu >= 0) && (pmu->pmu_type & pmu_attr->pmu_type) ? attr->mode : 0;
 }
 
 static struct attribute_group hybrid_group_events_td  = {
@@ -6607,7 +6632,7 @@ __init int intel_pmu_init(void)
 		/* Initialize big core specific PerfMon capabilities.*/
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX];
 		pmu->name = "cpu_core";
-		pmu->cpu_type = hybrid_big;
+		pmu->pmu_type = hybrid_big;
 		intel_pmu_init_glc(&pmu->pmu);
 		pmu->late_ack = true;
 		if (cpu_feature_enabled(X86_FEATURE_HYBRID_CPU)) {
@@ -6643,7 +6668,7 @@ __init int intel_pmu_init(void)
 		/* Initialize Atom core specific PerfMon capabilities.*/
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX];
 		pmu->name = "cpu_atom";
-		pmu->cpu_type = hybrid_small;
+		pmu->pmu_type = hybrid_small;
 		intel_pmu_init_grt(&pmu->pmu);
 		pmu->mid_ack = true;
 		pmu->num_counters = x86_pmu.num_counters;
diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index 7464246..bf97ab9 100644
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -261,7 +261,7 @@ static u64 __adl_latency_data_small(struct perf_event *event, u64 status,
 {
 	u64 val;
 
-	WARN_ON_ONCE(hybrid_pmu(event->pmu)->cpu_type == hybrid_big);
+	WARN_ON_ONCE(hybrid_pmu(event->pmu)->pmu_type == hybrid_big);
 
 	dse &= PERF_PEBS_DATA_SOURCE_MASK;
 	val = hybrid_var(event->pmu, pebs_data_source)[dse];
diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
index 96a427f..53dd5d4 100644
--- a/arch/x86/events/perf_event.h
+++ b/arch/x86/events/perf_event.h
@@ -652,10 +652,29 @@ enum {
 #define PERF_PEBS_DATA_SOURCE_MAX	0x10
 #define PERF_PEBS_DATA_SOURCE_MASK	(PERF_PEBS_DATA_SOURCE_MAX - 1)
 
+enum hybrid_cpu_type {
+	HYBRID_INTEL_NONE,
+	HYBRID_INTEL_ATOM	= 0x20,
+	HYBRID_INTEL_CORE	= 0x40,
+};
+
+enum hybrid_pmu_type {
+	not_hybrid,
+	hybrid_small		= BIT(0),
+	hybrid_big		= BIT(1),
+
+	hybrid_big_small	= hybrid_big | hybrid_small, /* only used for matching */
+};
+
+#define X86_HYBRID_PMU_ATOM_IDX		0
+#define X86_HYBRID_PMU_CORE_IDX		1
+
+#define X86_HYBRID_NUM_PMUS		2
+
 struct x86_hybrid_pmu {
 	struct pmu			pmu;
 	const char			*name;
-	u8				cpu_type;
+	enum hybrid_pmu_type		pmu_type;
 	cpumask_t			supported_cpus;
 	union perf_capabilities		intel_cap;
 	u64				intel_ctrl;
@@ -721,18 +740,6 @@ extern struct static_key_false perf_is_hybrid;
 	__Fp;						\
 })
 
-enum hybrid_pmu_type {
-	hybrid_big		= 0x40,
-	hybrid_small		= 0x20,
-
-	hybrid_big_small	= hybrid_big | hybrid_small,
-};
-
-#define X86_HYBRID_PMU_ATOM_IDX		0
-#define X86_HYBRID_PMU_CORE_IDX		1
-
-#define X86_HYBRID_NUM_PMUS		2
-
 /*
  * struct x86_pmu - generic x86 pmu
  */
@@ -940,7 +947,7 @@ struct x86_pmu {
 	 */
 	int				num_hybrid_pmus;
 	struct x86_hybrid_pmu		*hybrid_pmu;
-	u8 (*get_hybrid_cpu_type)	(void);
+	enum hybrid_cpu_type (*get_hybrid_cpu_type)	(void);
 };
 
 struct x86_perf_task_context_opt {

[PATCH 6/6] perf/x86/intel: Add common intel_pmu_init_hybrid

[kan.liang]

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

The current hybrid initialization codes aren't well organized and are
hard to read.

Factor out intel_pmu_init_hybrid() to do a common setup for each
hybrid PMU. The PMU-specific capability will be updated later via either
hard code (ADL) or CPUID hybrid enumeration (MTL).

Splitting the ADL and MTL initialization codes, since they have
different uarches. The hard code PMU capabilities are not required for
MTL either. They can be enumerated by the new leaf 0x23 and
IA32_PERF_CAPABILITIES MSR.

The hybrid enumeration of the IA32_PERF_CAPABILITIES MSR is broken on
MTL. Using the default value.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
---
 arch/x86/events/intel/core.c | 162 ++++++++++++++++++++++++-----------
 1 file changed, 111 insertions(+), 51 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index bfa0649c31f4..89be504abca9 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -4591,6 +4591,16 @@ static void intel_pmu_check_num_counters(int *num_counters,
 					 int *num_counters_fixed,
 					 u64 *intel_ctrl, u64 fixed_mask);
 
+static inline bool intel_pmu_broken_perf_cap(void)
+{
+	/* The Perf Metric (Bit 15) is always cleared */
+	if ((boot_cpu_data.x86_model == INTEL_FAM6_METEORLAKE) ||
+	    (boot_cpu_data.x86_model == INTEL_FAM6_METEORLAKE_L))
+		return true;
+
+	return false;
+}
+
 static void update_pmu_cap(struct x86_hybrid_pmu *pmu)
 {
 	unsigned int sub_bitmaps = cpuid_eax(ARCH_PERFMON_EXT_LEAF);
@@ -4603,7 +4613,27 @@ static void update_pmu_cap(struct x86_hybrid_pmu *pmu)
 		pmu->num_counters_fixed = fls(ebx);
 		intel_pmu_check_num_counters(&pmu->num_counters, &pmu->num_counters_fixed,
 					     &pmu->intel_ctrl, ebx);
+		pmu->max_pebs_events = min_t(unsigned, MAX_PEBS_EVENTS, pmu->num_counters);
+		pmu->unconstrained = (struct event_constraint)
+				     __EVENT_CONSTRAINT(0, (1ULL << pmu->num_counters) - 1,
+							0, pmu->num_counters, 0, 0);
 	}
+
+
+	if (!intel_pmu_broken_perf_cap()) {
+		/* Perf Metric (Bit 15) and PEBS via PT (Bit 16) are hybrid enumeration */
+		rdmsrl(MSR_IA32_PERF_CAPABILITIES, pmu->intel_cap.capabilities);
+	}
+
+	if (pmu->intel_cap.perf_metrics)
+		pmu->intel_ctrl |= 1ULL << GLOBAL_CTRL_EN_PERF_METRICS;
+	else
+		pmu->intel_ctrl &= ~(1ULL << GLOBAL_CTRL_EN_PERF_METRICS);
+
+	if (pmu->intel_cap.pebs_output_pt_available)
+		pmu->pmu.capabilities |= PERF_PMU_CAP_AUX_OUTPUT;
+	else
+		pmu->pmu.capabilities |= ~PERF_PMU_CAP_AUX_OUTPUT;
 }
 
 static struct x86_hybrid_pmu *find_hybrid_pmu_for_cpu(void)
@@ -5908,10 +5938,52 @@ static void intel_pmu_check_hybrid_pmus(u64 fixed_mask)
 	}
 }
 
-static __always_inline bool is_mtl(u8 x86_model)
+static const struct { enum hybrid_pmu_type id; char *name; } intel_hybrid_pmu_type_map[] __initconst = {
+	{ hybrid_small, "cpu_atom" },
+	{ hybrid_big, "cpu_core" },
+};
+
+static __always_inline int intel_pmu_init_hybrid(enum hybrid_pmu_type pmus)
 {
-	return (x86_model == INTEL_FAM6_METEORLAKE) ||
-	       (x86_model == INTEL_FAM6_METEORLAKE_L);
+	unsigned long pmus_mask = pmus;
+	struct x86_hybrid_pmu *pmu;
+	int idx = 0, bit;
+
+	x86_pmu.num_hybrid_pmus = hweight_long(pmus_mask);
+	x86_pmu.hybrid_pmu = kcalloc(x86_pmu.num_hybrid_pmus,
+				     sizeof(struct x86_hybrid_pmu),
+				     GFP_KERNEL);
+	if (!x86_pmu.hybrid_pmu)
+		return -ENOMEM;
+
+	static_branch_enable(&perf_is_hybrid);
+	x86_pmu.filter = intel_pmu_filter;
+
+	for_each_set_bit(bit, &pmus_mask, ARRAY_SIZE(intel_hybrid_pmu_type_map)) {
+		pmu = &x86_pmu.hybrid_pmu[idx++];
+		pmu->pmu_type = intel_hybrid_pmu_type_map[bit].id;
+		pmu->name = intel_hybrid_pmu_type_map[bit].name;
+
+		pmu->num_counters = x86_pmu.num_counters;
+		pmu->num_counters_fixed = x86_pmu.num_counters_fixed;
+		pmu->max_pebs_events = min_t(unsigned, MAX_PEBS_EVENTS, pmu->num_counters);
+		pmu->unconstrained = (struct event_constraint)
+				     __EVENT_CONSTRAINT(0, (1ULL << pmu->num_counters) - 1,
+							0, pmu->num_counters, 0, 0);
+
+		pmu->intel_cap.capabilities = x86_pmu.intel_cap.capabilities;
+		if (pmu->pmu_type & hybrid_small) {
+			pmu->intel_cap.perf_metrics = 0;
+			pmu->intel_cap.pebs_output_pt_available = 1;
+			pmu->mid_ack = true;
+		} else if (pmu->pmu_type & hybrid_big) {
+			pmu->intel_cap.perf_metrics = 1;
+			pmu->intel_cap.pebs_output_pt_available = 0;
+			pmu->late_ack = true;
+		}
+	}
+
+	return 0;
 }
 
 static __always_inline void intel_pmu_init_glc(struct pmu *pmu)
@@ -6595,23 +6667,14 @@ __init int intel_pmu_init(void)
 	case INTEL_FAM6_RAPTORLAKE:
 	case INTEL_FAM6_RAPTORLAKE_P:
 	case INTEL_FAM6_RAPTORLAKE_S:
-	case INTEL_FAM6_METEORLAKE:
-	case INTEL_FAM6_METEORLAKE_L:
 		/*
 		 * Alder Lake has 2 types of CPU, core and atom.
 		 *
 		 * Initialize the common PerfMon capabilities here.
 		 */
-		x86_pmu.hybrid_pmu = kcalloc(X86_HYBRID_NUM_PMUS,
-					     sizeof(struct x86_hybrid_pmu),
-					     GFP_KERNEL);
-		if (!x86_pmu.hybrid_pmu)
-			return -ENOMEM;
-		static_branch_enable(&perf_is_hybrid);
-		x86_pmu.num_hybrid_pmus = X86_HYBRID_NUM_PMUS;
+		intel_pmu_init_hybrid(hybrid_big_small);
 
 		x86_pmu.pebs_latency_data = adl_latency_data_small;
-		x86_pmu.filter = intel_pmu_filter;
 		x86_pmu.get_event_constraints = adl_get_event_constraints;
 		x86_pmu.hw_config = adl_hw_config;
 		x86_pmu.get_hybrid_cpu_type = adl_get_hybrid_cpu_type;
@@ -6624,10 +6687,7 @@ __init int intel_pmu_init(void)
 
 		/* Initialize big core specific PerfMon capabilities.*/
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX];
-		pmu->name = "cpu_core";
-		pmu->pmu_type = hybrid_big;
 		intel_pmu_init_glc(&pmu->pmu);
-		pmu->late_ack = true;
 		if (cpu_feature_enabled(X86_FEATURE_HYBRID_CPU)) {
 			pmu->num_counters = x86_pmu.num_counters + 2;
 			pmu->num_counters_fixed = x86_pmu.num_counters_fixed + 1;
@@ -6652,45 +6712,45 @@ __init int intel_pmu_init(void)
 		pmu->unconstrained = (struct event_constraint)
 					__EVENT_CONSTRAINT(0, (1ULL << pmu->num_counters) - 1,
 							   0, pmu->num_counters, 0, 0);
-		pmu->intel_cap.capabilities = x86_pmu.intel_cap.capabilities;
-		pmu->intel_cap.perf_metrics = 1;
-		pmu->intel_cap.pebs_output_pt_available = 0;
-
 		pmu->extra_regs = intel_glc_extra_regs;
 
 		/* Initialize Atom core specific PerfMon capabilities.*/
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX];
-		pmu->name = "cpu_atom";
-		pmu->pmu_type = hybrid_small;
 		intel_pmu_init_grt(&pmu->pmu);
-		pmu->mid_ack = true;
-		pmu->num_counters = x86_pmu.num_counters;
-		pmu->num_counters_fixed = x86_pmu.num_counters_fixed;
-		pmu->max_pebs_events = x86_pmu.max_pebs_events;
-		pmu->unconstrained = (struct event_constraint)
-					__EVENT_CONSTRAINT(0, (1ULL << pmu->num_counters) - 1,
-							   0, pmu->num_counters, 0, 0);
-		pmu->intel_cap.capabilities = x86_pmu.intel_cap.capabilities;
-		pmu->intel_cap.perf_metrics = 0;
-		pmu->intel_cap.pebs_output_pt_available = 1;
-
-		if (is_mtl(boot_cpu_data.x86_model)) {
-			x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX].extra_regs = intel_rwc_extra_regs;
-			x86_pmu.pebs_latency_data = mtl_latency_data_small;
-			extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
-				mtl_hybrid_extra_attr_rtm : mtl_hybrid_extra_attr;
-			mem_attr = mtl_hybrid_mem_attrs;
-			intel_pmu_pebs_data_source_mtl();
-			x86_pmu.get_event_constraints = mtl_get_event_constraints;
-			pmu->extra_regs = intel_cmt_extra_regs;
-			pr_cont("Meteorlake Hybrid events, ");
-			name = "meteorlake_hybrid";
-		} else {
-			x86_pmu.flags |= PMU_FL_MEM_LOADS_AUX;
-			intel_pmu_pebs_data_source_adl();
-			pr_cont("Alderlake Hybrid events, ");
-			name = "alderlake_hybrid";
-		}
+
+		x86_pmu.flags |= PMU_FL_MEM_LOADS_AUX;
+		intel_pmu_pebs_data_source_adl();
+		pr_cont("Alderlake Hybrid events, ");
+		name = "alderlake_hybrid";
+		break;
+
+	case INTEL_FAM6_METEORLAKE:
+	case INTEL_FAM6_METEORLAKE_L:
+		intel_pmu_init_hybrid(hybrid_big_small);
+
+		x86_pmu.pebs_latency_data = mtl_latency_data_small;
+		x86_pmu.get_event_constraints = mtl_get_event_constraints;
+		x86_pmu.hw_config = adl_hw_config;
+
+		td_attr = adl_hybrid_events_attrs;
+		mem_attr = mtl_hybrid_mem_attrs;
+		tsx_attr = adl_hybrid_tsx_attrs;
+		extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
+			mtl_hybrid_extra_attr_rtm : mtl_hybrid_extra_attr;
+
+		/* Initialize big core specific PerfMon capabilities.*/
+		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX];
+		intel_pmu_init_glc(&pmu->pmu);
+		pmu->extra_regs = intel_rwc_extra_regs;
+
+		/* Initialize Atom core specific PerfMon capabilities.*/
+		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX];
+		intel_pmu_init_grt(&pmu->pmu);
+		pmu->extra_regs = intel_cmt_extra_regs;
+
+		intel_pmu_pebs_data_source_mtl();
+		pr_cont("Meteorlake Hybrid events, ");
+		name = "meteorlake_hybrid";
 		break;
 
 	default:
@@ -6802,7 +6862,7 @@ __init int intel_pmu_init(void)
 	if (!is_hybrid() && x86_pmu.intel_cap.perf_metrics)
 		x86_pmu.intel_ctrl |= 1ULL << GLOBAL_CTRL_EN_PERF_METRICS;
 
-	if (is_hybrid())
+	if (is_hybrid() && !boot_cpu_has(X86_FEATURE_ARCH_PERFMON_EXT))
 		intel_pmu_check_hybrid_pmus((u64)fixed_mask);
 
 	if (x86_pmu.intel_cap.pebs_timing_info)
-- 
2.35.1

[tip: perf/core] perf/x86/intel: Add common intel_pmu_init_hybrid()

[tip-bot2 for Kan Liang]

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     97588df87b56e27fd2b5d928d61c7a53e38afbb0
Gitweb:        https://git.kernel.org/tip/97588df87b56e27fd2b5d928d61c7a53e38afbb0
Author:        Kan Liang <kan.liang@linux.intel.com>
AuthorDate:    Tue, 29 Aug 2023 05:58:06 -07:00
Committer:     Ingo Molnar <mingo@kernel.org>
CommitterDate: Tue, 29 Aug 2023 20:59:23 +02:00

perf/x86/intel: Add common intel_pmu_init_hybrid()

The current hybrid initialization codes aren't well organized and are
hard to read.

Factor out intel_pmu_init_hybrid() to do a common setup for each
hybrid PMU. The PMU-specific capability will be updated later via either
hard code (ADL) or CPUID hybrid enumeration (MTL).

Splitting the ADL and MTL initialization codes, since they have
different uarches. The hard code PMU capabilities are not required for
MTL either. They can be enumerated by the new leaf 0x23 and
IA32_PERF_CAPABILITIES MSR.

The hybrid enumeration of the IA32_PERF_CAPABILITIES MSR is broken on
MTL. Using the default value.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230829125806.3016082-7-kan.liang@linux.intel.com
---
 arch/x86/events/intel/core.c | 162 +++++++++++++++++++++++-----------
 1 file changed, 111 insertions(+), 51 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 9ac2e12..83dfbba 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -4598,6 +4598,16 @@ static void intel_pmu_check_num_counters(int *num_counters,
 					 int *num_counters_fixed,
 					 u64 *intel_ctrl, u64 fixed_mask);
 
+static inline bool intel_pmu_broken_perf_cap(void)
+{
+	/* The Perf Metric (Bit 15) is always cleared */
+	if ((boot_cpu_data.x86_model == INTEL_FAM6_METEORLAKE) ||
+	    (boot_cpu_data.x86_model == INTEL_FAM6_METEORLAKE_L))
+		return true;
+
+	return false;
+}
+
 static void update_pmu_cap(struct x86_hybrid_pmu *pmu)
 {
 	unsigned int sub_bitmaps = cpuid_eax(ARCH_PERFMON_EXT_LEAF);
@@ -4610,7 +4620,27 @@ static void update_pmu_cap(struct x86_hybrid_pmu *pmu)
 		pmu->num_counters_fixed = fls(ebx);
 		intel_pmu_check_num_counters(&pmu->num_counters, &pmu->num_counters_fixed,
 					     &pmu->intel_ctrl, ebx);
+		pmu->max_pebs_events = min_t(unsigned, MAX_PEBS_EVENTS, pmu->num_counters);
+		pmu->unconstrained = (struct event_constraint)
+				     __EVENT_CONSTRAINT(0, (1ULL << pmu->num_counters) - 1,
+							0, pmu->num_counters, 0, 0);
 	}
+
+
+	if (!intel_pmu_broken_perf_cap()) {
+		/* Perf Metric (Bit 15) and PEBS via PT (Bit 16) are hybrid enumeration */
+		rdmsrl(MSR_IA32_PERF_CAPABILITIES, pmu->intel_cap.capabilities);
+	}
+
+	if (pmu->intel_cap.perf_metrics)
+		pmu->intel_ctrl |= 1ULL << GLOBAL_CTRL_EN_PERF_METRICS;
+	else
+		pmu->intel_ctrl &= ~(1ULL << GLOBAL_CTRL_EN_PERF_METRICS);
+
+	if (pmu->intel_cap.pebs_output_pt_available)
+		pmu->pmu.capabilities |= PERF_PMU_CAP_AUX_OUTPUT;
+	else
+		pmu->pmu.capabilities |= ~PERF_PMU_CAP_AUX_OUTPUT;
 }
 
 static struct x86_hybrid_pmu *find_hybrid_pmu_for_cpu(void)
@@ -5915,10 +5945,52 @@ static void intel_pmu_check_hybrid_pmus(u64 fixed_mask)
 	}
 }
 
-static __always_inline bool is_mtl(u8 x86_model)
+static const struct { enum hybrid_pmu_type id; char *name; } intel_hybrid_pmu_type_map[] __initconst = {
+	{ hybrid_small, "cpu_atom" },
+	{ hybrid_big, "cpu_core" },
+};
+
+static __always_inline int intel_pmu_init_hybrid(enum hybrid_pmu_type pmus)
 {
-	return (x86_model == INTEL_FAM6_METEORLAKE) ||
-	       (x86_model == INTEL_FAM6_METEORLAKE_L);
+	unsigned long pmus_mask = pmus;
+	struct x86_hybrid_pmu *pmu;
+	int idx = 0, bit;
+
+	x86_pmu.num_hybrid_pmus = hweight_long(pmus_mask);
+	x86_pmu.hybrid_pmu = kcalloc(x86_pmu.num_hybrid_pmus,
+				     sizeof(struct x86_hybrid_pmu),
+				     GFP_KERNEL);
+	if (!x86_pmu.hybrid_pmu)
+		return -ENOMEM;
+
+	static_branch_enable(&perf_is_hybrid);
+	x86_pmu.filter = intel_pmu_filter;
+
+	for_each_set_bit(bit, &pmus_mask, ARRAY_SIZE(intel_hybrid_pmu_type_map)) {
+		pmu = &x86_pmu.hybrid_pmu[idx++];
+		pmu->pmu_type = intel_hybrid_pmu_type_map[bit].id;
+		pmu->name = intel_hybrid_pmu_type_map[bit].name;
+
+		pmu->num_counters = x86_pmu.num_counters;
+		pmu->num_counters_fixed = x86_pmu.num_counters_fixed;
+		pmu->max_pebs_events = min_t(unsigned, MAX_PEBS_EVENTS, pmu->num_counters);
+		pmu->unconstrained = (struct event_constraint)
+				     __EVENT_CONSTRAINT(0, (1ULL << pmu->num_counters) - 1,
+							0, pmu->num_counters, 0, 0);
+
+		pmu->intel_cap.capabilities = x86_pmu.intel_cap.capabilities;
+		if (pmu->pmu_type & hybrid_small) {
+			pmu->intel_cap.perf_metrics = 0;
+			pmu->intel_cap.pebs_output_pt_available = 1;
+			pmu->mid_ack = true;
+		} else if (pmu->pmu_type & hybrid_big) {
+			pmu->intel_cap.perf_metrics = 1;
+			pmu->intel_cap.pebs_output_pt_available = 0;
+			pmu->late_ack = true;
+		}
+	}
+
+	return 0;
 }
 
 static __always_inline void intel_pmu_init_glc(struct pmu *pmu)
@@ -6602,23 +6674,14 @@ __init int intel_pmu_init(void)
 	case INTEL_FAM6_RAPTORLAKE:
 	case INTEL_FAM6_RAPTORLAKE_P:
 	case INTEL_FAM6_RAPTORLAKE_S:
-	case INTEL_FAM6_METEORLAKE:
-	case INTEL_FAM6_METEORLAKE_L:
 		/*
 		 * Alder Lake has 2 types of CPU, core and atom.
 		 *
 		 * Initialize the common PerfMon capabilities here.
 		 */
-		x86_pmu.hybrid_pmu = kcalloc(X86_HYBRID_NUM_PMUS,
-					     sizeof(struct x86_hybrid_pmu),
-					     GFP_KERNEL);
-		if (!x86_pmu.hybrid_pmu)
-			return -ENOMEM;
-		static_branch_enable(&perf_is_hybrid);
-		x86_pmu.num_hybrid_pmus = X86_HYBRID_NUM_PMUS;
+		intel_pmu_init_hybrid(hybrid_big_small);
 
 		x86_pmu.pebs_latency_data = adl_latency_data_small;
-		x86_pmu.filter = intel_pmu_filter;
 		x86_pmu.get_event_constraints = adl_get_event_constraints;
 		x86_pmu.hw_config = adl_hw_config;
 		x86_pmu.get_hybrid_cpu_type = adl_get_hybrid_cpu_type;
@@ -6631,10 +6694,7 @@ __init int intel_pmu_init(void)
 
 		/* Initialize big core specific PerfMon capabilities.*/
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX];
-		pmu->name = "cpu_core";
-		pmu->pmu_type = hybrid_big;
 		intel_pmu_init_glc(&pmu->pmu);
-		pmu->late_ack = true;
 		if (cpu_feature_enabled(X86_FEATURE_HYBRID_CPU)) {
 			pmu->num_counters = x86_pmu.num_counters + 2;
 			pmu->num_counters_fixed = x86_pmu.num_counters_fixed + 1;
@@ -6659,45 +6719,45 @@ __init int intel_pmu_init(void)
 		pmu->unconstrained = (struct event_constraint)
 					__EVENT_CONSTRAINT(0, (1ULL << pmu->num_counters) - 1,
 							   0, pmu->num_counters, 0, 0);
-		pmu->intel_cap.capabilities = x86_pmu.intel_cap.capabilities;
-		pmu->intel_cap.perf_metrics = 1;
-		pmu->intel_cap.pebs_output_pt_available = 0;
-
 		pmu->extra_regs = intel_glc_extra_regs;
 
 		/* Initialize Atom core specific PerfMon capabilities.*/
 		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX];
-		pmu->name = "cpu_atom";
-		pmu->pmu_type = hybrid_small;
 		intel_pmu_init_grt(&pmu->pmu);
-		pmu->mid_ack = true;
-		pmu->num_counters = x86_pmu.num_counters;
-		pmu->num_counters_fixed = x86_pmu.num_counters_fixed;
-		pmu->max_pebs_events = x86_pmu.max_pebs_events;
-		pmu->unconstrained = (struct event_constraint)
-					__EVENT_CONSTRAINT(0, (1ULL << pmu->num_counters) - 1,
-							   0, pmu->num_counters, 0, 0);
-		pmu->intel_cap.capabilities = x86_pmu.intel_cap.capabilities;
-		pmu->intel_cap.perf_metrics = 0;
-		pmu->intel_cap.pebs_output_pt_available = 1;
-
-		if (is_mtl(boot_cpu_data.x86_model)) {
-			x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX].extra_regs = intel_rwc_extra_regs;
-			x86_pmu.pebs_latency_data = mtl_latency_data_small;
-			extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
-				mtl_hybrid_extra_attr_rtm : mtl_hybrid_extra_attr;
-			mem_attr = mtl_hybrid_mem_attrs;
-			intel_pmu_pebs_data_source_mtl();
-			x86_pmu.get_event_constraints = mtl_get_event_constraints;
-			pmu->extra_regs = intel_cmt_extra_regs;
-			pr_cont("Meteorlake Hybrid events, ");
-			name = "meteorlake_hybrid";
-		} else {
-			x86_pmu.flags |= PMU_FL_MEM_LOADS_AUX;
-			intel_pmu_pebs_data_source_adl();
-			pr_cont("Alderlake Hybrid events, ");
-			name = "alderlake_hybrid";
-		}
+
+		x86_pmu.flags |= PMU_FL_MEM_LOADS_AUX;
+		intel_pmu_pebs_data_source_adl();
+		pr_cont("Alderlake Hybrid events, ");
+		name = "alderlake_hybrid";
+		break;
+
+	case INTEL_FAM6_METEORLAKE:
+	case INTEL_FAM6_METEORLAKE_L:
+		intel_pmu_init_hybrid(hybrid_big_small);
+
+		x86_pmu.pebs_latency_data = mtl_latency_data_small;
+		x86_pmu.get_event_constraints = mtl_get_event_constraints;
+		x86_pmu.hw_config = adl_hw_config;
+
+		td_attr = adl_hybrid_events_attrs;
+		mem_attr = mtl_hybrid_mem_attrs;
+		tsx_attr = adl_hybrid_tsx_attrs;
+		extra_attr = boot_cpu_has(X86_FEATURE_RTM) ?
+			mtl_hybrid_extra_attr_rtm : mtl_hybrid_extra_attr;
+
+		/* Initialize big core specific PerfMon capabilities.*/
+		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX];
+		intel_pmu_init_glc(&pmu->pmu);
+		pmu->extra_regs = intel_rwc_extra_regs;
+
+		/* Initialize Atom core specific PerfMon capabilities.*/
+		pmu = &x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX];
+		intel_pmu_init_grt(&pmu->pmu);
+		pmu->extra_regs = intel_cmt_extra_regs;
+
+		intel_pmu_pebs_data_source_mtl();
+		pr_cont("Meteorlake Hybrid events, ");
+		name = "meteorlake_hybrid";
 		break;
 
 	default:
@@ -6809,7 +6869,7 @@ __init int intel_pmu_init(void)
 	if (!is_hybrid() && x86_pmu.intel_cap.perf_metrics)
 		x86_pmu.intel_ctrl |= 1ULL << GLOBAL_CTRL_EN_PERF_METRICS;
 
-	if (is_hybrid())
+	if (is_hybrid() && !boot_cpu_has(X86_FEATURE_ARCH_PERFMON_EXT))
 		intel_pmu_check_hybrid_pmus((u64)fixed_mask);
 
 	if (x86_pmu.intel_cap.pebs_timing_info)

Re: [PATCH 0/6] Cleanup Intel PMU initialization code

[Ingo Molnar]

* kan.liang@linux.intel.com <kan.liang@linux.intel.com> wrote:

> From: Kan Liang <kan.liang@linux.intel.com>
> 
> The patch set is to clean up the Intel PMU initialization code. There is
> no functional change.
> 
> Kan Liang (6):
>   perf/x86/intel: Use the common uarch name for the shared functions
>   perf/x86/intel: Factor out the initialization code for SPR
>   perf/x86/intel: Factor out the initialization code for ADL e-core
>   perf/x86/intel: Apply the common initialization code for ADL
>   perf/x86/intel: Cleanup the hybrid CPU type
>   perf/x86/intel: Add common intel_pmu_init_hybrid
> 
>  arch/x86/events/core.c       |   6 +-
>  arch/x86/events/intel/core.c | 397 ++++++++++++++++++-----------------
>  arch/x86/events/intel/ds.c   |   4 +-
>  arch/x86/events/perf_event.h |  37 ++--
>  4 files changed, 226 insertions(+), 218 deletions(-)

Applied, thanks.

	Ingo