[PATCH v10 22/35] perf jevents: Add load store breakdown metrics ldst for Intel

[Ian Rogers <irogers@google.com>]

Give breakdown of number of instructions. Use the counter mask (cmask)
to show the number of cycles taken to retire the instructions.

Tested-by: Thomas Falcon <thomas.falcon@intel.com>
Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/pmu-events/intel_metrics.py | 87 +++++++++++++++++++++++++-
 1 file changed, 86 insertions(+), 1 deletion(-)

diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events/intel_metrics.py
index d190d97f4aff..19a284b4c520 100755
--- a/tools/perf/pmu-events/intel_metrics.py
+++ b/tools/perf/pmu-events/intel_metrics.py
@@ -8,7 +8,7 @@ import re
 from typing import Optional
 from metric import (d_ratio, has_event, max, CheckPmu, Event, JsonEncodeMetric,
                     JsonEncodeMetricGroupDescriptions, Literal, LoadEvents,
-                    Metric, MetricGroup, MetricRef, Select)
+                    Metric, MetricConstraint, MetricGroup, MetricRef, Select)
 
 # Global command line arguments.
 _args = None
@@ -525,6 +525,90 @@ def IntelSwpf() -> Optional[MetricGroup]:
     ], description="Software prefetch instruction breakdown")
 
 
+def IntelLdSt() -> Optional[MetricGroup]:
+    if _args.model in [
+        "bonnell",
+        "nehalemep",
+        "nehalemex",
+        "westmereep-dp",
+        "westmereep-sp",
+        "westmereex",
+    ]:
+        return None
+    LDST_LD = Event("MEM_INST_RETIRED.ALL_LOADS", "MEM_UOPS_RETIRED.ALL_LOADS")
+    LDST_ST = Event("MEM_INST_RETIRED.ALL_STORES",
+                    "MEM_UOPS_RETIRED.ALL_STORES")
+    LDST_LDC1 = Event(f"{LDST_LD.name}/cmask=1/")
+    LDST_STC1 = Event(f"{LDST_ST.name}/cmask=1/")
+    LDST_LDC2 = Event(f"{LDST_LD.name}/cmask=2/")
+    LDST_STC2 = Event(f"{LDST_ST.name}/cmask=2/")
+    LDST_LDC3 = Event(f"{LDST_LD.name}/cmask=3/")
+    LDST_STC3 = Event(f"{LDST_ST.name}/cmask=3/")
+    ins = Event("instructions")
+    LDST_CYC = Event("CPU_CLK_UNHALTED.THREAD",
+                     "CPU_CLK_UNHALTED.CORE_P",
+                     "CPU_CLK_UNHALTED.THREAD_P")
+    LDST_PRE = None
+    try:
+        LDST_PRE = Event("LOAD_HIT_PREFETCH.SWPF", "LOAD_HIT_PRE.SW_PF")
+    except:
+        pass
+    LDST_AT = None
+    try:
+        LDST_AT = Event("MEM_INST_RETIRED.LOCK_LOADS")
+    except:
+        pass
+    cyc = LDST_CYC
+
+    ld_rate = d_ratio(LDST_LD, interval_sec)
+    st_rate = d_ratio(LDST_ST, interval_sec)
+    pf_rate = d_ratio(LDST_PRE, interval_sec) if LDST_PRE else None
+    at_rate = d_ratio(LDST_AT, interval_sec) if LDST_AT else None
+
+    ldst_ret_constraint = MetricConstraint.GROUPED_EVENTS
+    if LDST_LD.name == "MEM_UOPS_RETIRED.ALL_LOADS":
+        ldst_ret_constraint = MetricConstraint.NO_GROUP_EVENTS_NMI
+
+    return MetricGroup("lpm_ldst", [
+        MetricGroup("lpm_ldst_total", [
+            Metric("lpm_ldst_total_loads", "Load/store instructions total loads",
+                   ld_rate, "loads"),
+            Metric("lpm_ldst_total_stores", "Load/store instructions total stores",
+                   st_rate, "stores"),
+        ]),
+        MetricGroup("lpm_ldst_prcnt", [
+            Metric("lpm_ldst_prcnt_loads", "Percent of all instructions that are loads",
+                   d_ratio(LDST_LD, ins), "100%"),
+            Metric("lpm_ldst_prcnt_stores", "Percent of all instructions that are stores",
+                   d_ratio(LDST_ST, ins), "100%"),
+        ]),
+        MetricGroup("lpm_ldst_ret_lds", [
+            Metric("lpm_ldst_ret_lds_1", "Retired loads in 1 cycle",
+                   d_ratio(max(LDST_LDC1 - LDST_LDC2, 0), cyc), "100%",
+                   constraint=ldst_ret_constraint),
+            Metric("lpm_ldst_ret_lds_2", "Retired loads in 2 cycles",
+                   d_ratio(max(LDST_LDC2 - LDST_LDC3, 0), cyc), "100%",
+                   constraint=ldst_ret_constraint),
+            Metric("lpm_ldst_ret_lds_3", "Retired loads in 3 or more cycles",
+                   d_ratio(LDST_LDC3, cyc), "100%"),
+        ]),
+        MetricGroup("lpm_ldst_ret_sts", [
+            Metric("lpm_ldst_ret_sts_1", "Retired stores in 1 cycle",
+                   d_ratio(max(LDST_STC1 - LDST_STC2, 0), cyc), "100%",
+                   constraint=ldst_ret_constraint),
+            Metric("lpm_ldst_ret_sts_2", "Retired stores in 2 cycles",
+                   d_ratio(max(LDST_STC2 - LDST_STC3, 0), cyc), "100%",
+                   constraint=ldst_ret_constraint),
+            Metric("lpm_ldst_ret_sts_3", "Retired stores in 3 more cycles",
+                   d_ratio(LDST_STC3, cyc), "100%"),
+        ]),
+        Metric("lpm_ldst_ld_hit_swpf", "Load hit software prefetches per second",
+               pf_rate, "swpf/s") if pf_rate else None,
+        Metric("lpm_ldst_atomic_lds", "Atomic loads per second",
+               at_rate, "loads/s") if at_rate else None,
+    ], description="Breakdown of load/store instructions")
+
+
 def main() -> None:
     global _args
 
@@ -556,6 +640,7 @@ def main() -> None:
         Tsx(),
         IntelBr(),
         IntelL2(),
+        IntelLdSt(),
         IntelPorts(),
         IntelSwpf(),
     ])
-- 
2.52.0.457.g6b5491de43-goog