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

Commit-ID:     30d82ddee085b4b0f9a1b5bded53acaca68d9a52
Gitweb:        https://git.kernel.org/tip/30d82ddee085b4b0f9a1b5bded53acaca68d9a52
Author:        Dapeng Mi <dapeng1.mi@linux.intel.com>
AuthorDate:    Fri, 15 May 2026 14:11:34 +08:00
Committer:     Peter Zijlstra <peterz@infradead.org>
CommitterDate: Tue, 19 May 2026 13:49:02 +02:00

perf/x86/intel: Update event constraints and cache_extra_regsfor SPR

Update perf hard-coded event constraints and cache_extra_regs[] for
Sapphire rapids according to the latest SPR perfmon events (v1.39).

Emerald Rapids (EMR) and Granite Rapids (GNR) share exactly same event
constraints and extra MSR values with SPR. No extra changes are needed
for EMR and GNR.

Please note the change could temporarily impact other platforms which
share the hard coded data structures, but it would be fixed in
subsequent patches soon.

SPR perfmon events:
https://github.com/intel/perfmon/blob/main/SPR/events/sapphirerapids_core.json

Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260515061143.338553-3-dapeng1.mi@linux.intel.com
---
 arch/x86/events/intel/core.c | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index db409ca..932f612 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -356,11 +356,12 @@ static struct extra_reg intel_glc_extra_regs[] __read_mostly = {
 
 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(0x0100, 0),	/* pseudo INST_RETIRED.ANY */
 	FIXED_EVENT_CONSTRAINT(0x003c, 1),	/* CPU_CLK_UNHALTED.CORE */
-	FIXED_EVENT_CONSTRAINT(0x0300, 2),	/* CPU_CLK_UNHALTED.REF */
+	FIXED_EVENT_CONSTRAINT(0x0200, 1),	/* pseudo CPU_CLK_UNHALTED.THREAD */
+	FIXED_EVENT_CONSTRAINT(0x0300, 2),	/* pseudo CPU_CLK_UNHALTED.REF_TSC */
 	FIXED_EVENT_CONSTRAINT(0x013c, 2),	/* CPU_CLK_UNHALTED.REF_TSC_P */
-	FIXED_EVENT_CONSTRAINT(0x0400, 3),	/* SLOTS */
+	FIXED_EVENT_CONSTRAINT(0x0400, 3),	/* pseudo TOPDOWN.SLOTS */
 	METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_RETIRING, 0),
 	METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_BAD_SPEC, 1),
 	METRIC_EVENT_CONSTRAINT(INTEL_TD_METRIC_FE_BOUND, 2),
@@ -380,9 +381,13 @@ static struct event_constraint intel_glc_event_constraints[] = {
 
 	INTEL_UEVENT_CONSTRAINT(0x01a3, 0xf),
 	INTEL_UEVENT_CONSTRAINT(0x02a3, 0xf),
+	INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf),
+	INTEL_UEVENT_CONSTRAINT(0x06a3, 0xf),
 	INTEL_UEVENT_CONSTRAINT(0x08a3, 0xf),
+	INTEL_UEVENT_CONSTRAINT(0x0ca3, 0xf),
 	INTEL_UEVENT_CONSTRAINT(0x04a4, 0x1),
 	INTEL_UEVENT_CONSTRAINT(0x08a4, 0x1),
+	INTEL_UEVENT_CONSTRAINT(0x01cd, 0xfe),
 	INTEL_UEVENT_CONSTRAINT(0x02cd, 0x1),
 	INTEL_EVENT_CONSTRAINT(0xce, 0x1),
 	INTEL_EVENT_CONSTRAINT_RANGE(0xd0, 0xdf, 0xf),
@@ -714,18 +719,18 @@ static __initconst const u64 glc_hw_cache_extra_regs
 {
  [ C(LL  ) ] = {
 	[ C(OP_READ) ] = {
-		[ C(RESULT_ACCESS) ] = 0x10001,
-		[ C(RESULT_MISS)   ] = 0x3fbfc00001,
+		[ C(RESULT_ACCESS) ] = 0x10001,		/* OCR.DEMAND_DATA_RD.ANY_RESPONSE */
+		[ C(RESULT_MISS)   ] = 0x3fbfc00001,	/* OCR.DEMAND_DATA_RD.L3_MISS */
 	},
 	[ C(OP_WRITE) ] = {
-		[ C(RESULT_ACCESS) ] = 0x3f3ffc0002,
-		[ C(RESULT_MISS)   ] = 0x3f3fc00002,
+		[ C(RESULT_ACCESS) ] = 0x3f3ffc0002,	/* OCR.DEMAND_RFO.ANY_RESPONSE */
+		[ C(RESULT_MISS)   ] = 0x3f3fc00002,	/* OCR.DEMAND_RFO.L3_MISS */
 	},
  },
  [ C(NODE) ] = {
 	[ C(OP_READ) ] = {
-		[ C(RESULT_ACCESS) ] = 0x10c000001,
-		[ C(RESULT_MISS)   ] = 0x3fb3000001,
+		[ C(RESULT_ACCESS) ] = 0x104000001,	/* OCR.DEMAND_DATA_RD.LOCAL_DRAM */
+		[ C(RESULT_MISS)   ] = 0x730000001,	/* OCR.DEMAND_DATA_RD.REMOTE_DRAM */
 	},
  },
 };