linux-kernel - [tip: perf/core] perf/x86/intel: Add Granite Rapids

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Date:   Wed, 22 Mar 2023 09:14:35 -0000
From:   "tip-bot2 for Kan Liang" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Kan Liang <kan.liang@...ux.intel.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: perf/core] perf/x86/intel: Add Granite Rapids

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

Commit-ID:     bc4000fdb009a531fc5b94339f8531eee64bc232
Gitweb:        https://git.kernel.org/tip/bc4000fdb009a531fc5b94339f8531eee64bc232
Author:        Kan Liang <kan.liang@...ux.intel.com>
AuthorDate:    Tue, 14 Mar 2023 10:00:39 -07:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Tue, 21 Mar 2023 14:43:08 +01:00

perf/x86/intel: Add Granite Rapids

>>From core PMU's perspective, Granite Rapids is similar to the Sapphire
Rapids. The key differences include:

 - Doesn't need the AUX event workaround for the mem load event.
   (Implement in this patch).

 - Support Retire Latency (Has been implemented in the commit
   c87a31093c70 ("perf/x86: Support Retire Latency"))

 - The event list, which will be supported in the perf tool later.

Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lore.kernel.org/r/20230314170041.2967712-1-kan.liang@linux.intel.com
---
 arch/x86/events/intel/core.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index a3fb996..070cc4e 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -5470,6 +5470,15 @@ pebs_is_visible(struct kobject *kobj, struct attribute *attr, int i)
 }
 
 static umode_t
+mem_is_visible(struct kobject *kobj, struct attribute *attr, int i)
+{
+	if (attr == &event_attr_mem_ld_aux.attr.attr)
+		return x86_pmu.flags & PMU_FL_MEM_LOADS_AUX ? attr->mode : 0;
+
+	return pebs_is_visible(kobj, attr, i);
+}
+
+static umode_t
 lbr_is_visible(struct kobject *kobj, struct attribute *attr, int i)
 {
 	return x86_pmu.lbr_nr ? attr->mode : 0;
@@ -5496,7 +5505,7 @@ static struct attribute_group group_events_td  = {
 
 static struct attribute_group group_events_mem = {
 	.name       = "events",
-	.is_visible = pebs_is_visible,
+	.is_visible = mem_is_visible,
 };
 
 static struct attribute_group group_events_tsx = {
@@ -6486,6 +6495,10 @@ __init int intel_pmu_init(void)
 
 	case INTEL_FAM6_SAPPHIRERAPIDS_X:
 	case INTEL_FAM6_EMERALDRAPIDS_X:
+		x86_pmu.flags |= PMU_FL_MEM_LOADS_AUX;
+		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));
@@ -6502,7 +6515,6 @@ __init int intel_pmu_init(void)
 		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.flags |= PMU_FL_MEM_LOADS_AUX;
 
 		x86_pmu.hw_config = hsw_hw_config;
 		x86_pmu.get_event_constraints = spr_get_event_constraints;