[PATCH v9 20/48] perf jevents: Add dtlb metric group for AMD

[Ian Rogers <irogers@google.com>]

Add metrics that give an overview and details of the dtlb (zen1, zen2,
zen3).

Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Sandipan Das <sandipan.das@amd.com>
---
 tools/perf/pmu-events/amd_metrics.py | 111 +++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)

diff --git a/tools/perf/pmu-events/amd_metrics.py b/tools/perf/pmu-events/amd_metrics.py
index 7a418990a767..2d1d25cb40b2 100755
--- a/tools/perf/pmu-events/amd_metrics.py
+++ b/tools/perf/pmu-events/amd_metrics.py
@@ -121,6 +121,116 @@ def AmdBr():
                        description="breakdown of retired branch instructions")
 
 
+def AmdDtlb() -> Optional[MetricGroup]:
+    global _zen_model
+    if _zen_model >= 4:
+        return None
+
+    d_dat = Event("ls_dc_accesses") if _zen_model <= 3 else None
+    d_h4k = Event("ls_l1_d_tlb_miss.tlb_reload_4k_l2_hit")
+    d_hcoal = Event(
+        "ls_l1_d_tlb_miss.tlb_reload_coalesced_page_hit") if _zen_model >= 2 else 0
+    d_h2m = Event("ls_l1_d_tlb_miss.tlb_reload_2m_l2_hit")
+    d_h1g = Event("ls_l1_d_tlb_miss.tlb_reload_1g_l2_hit")
+
+    d_m4k = Event("ls_l1_d_tlb_miss.tlb_reload_4k_l2_miss")
+    d_mcoal = Event(
+        "ls_l1_d_tlb_miss.tlb_reload_coalesced_page_miss") if _zen_model >= 2 else 0
+    d_m2m = Event("ls_l1_d_tlb_miss.tlb_reload_2m_l2_miss")
+    d_m1g = Event("ls_l1_d_tlb_miss.tlb_reload_1g_l2_miss")
+
+    d_w0 = Event("ls_tablewalker.dc_type0") if _zen_model <= 3 else None
+    d_w1 = Event("ls_tablewalker.dc_type1") if _zen_model <= 3 else None
+    walks = d_w0 + d_w1
+    walks_r = d_ratio(walks, interval_sec)
+    ins_w = d_ratio(ins, walks)
+    l1 = d_dat
+    l1_r = d_ratio(l1, interval_sec)
+    l2_hits = d_h4k + d_hcoal + d_h2m + d_h1g
+    l2_miss = d_m4k + d_mcoal + d_m2m + d_m1g
+    l2_r = d_ratio(l2_hits + l2_miss, interval_sec)
+    l1_miss = l2_hits + l2_miss + walks
+    l1_hits = max(l1 - l1_miss, 0)
+    ins_l = d_ratio(ins, l1_miss)
+
+    return MetricGroup("lpm_dtlb", [
+        MetricGroup("lpm_dtlb_ov", [
+            Metric("lpm_dtlb_ov_insn_bt_l1_miss",
+                   "DTLB overview: instructions between l1 misses.", ins_l,
+                   "insns"),
+            Metric("lpm_dtlb_ov_insn_bt_walks",
+                   "DTLB overview: instructions between dtlb page table walks.",
+                   ins_w, "insns"),
+        ]),
+        MetricGroup("lpm_dtlb_l1", [
+            Metric("lpm_dtlb_l1_hits",
+                   "DTLB L1 hits as percentage of all DTLB L1 accesses.",
+                   d_ratio(l1_hits, l1), "100%"),
+            Metric("lpm_dtlb_l1_miss",
+                   "DTLB L1 misses as percentage of all DTLB L1 accesses.",
+                   d_ratio(l1_miss, l1), "100%"),
+            Metric("lpm_dtlb_l1_reqs", "DTLB L1 accesses per second.", l1_r,
+                   "insns/s"),
+        ]),
+        MetricGroup("lpm_dtlb_l2", [
+            Metric("lpm_dtlb_l2_hits",
+                   "DTLB L2 hits as percentage of all DTLB L2 accesses.",
+                   d_ratio(l2_hits, l2_hits + l2_miss), "100%"),
+            Metric("lpm_dtlb_l2_miss",
+                   "DTLB L2 misses as percentage of all DTLB L2 accesses.",
+                   d_ratio(l2_miss, l2_hits + l2_miss), "100%"),
+            Metric("lpm_dtlb_l2_reqs", "DTLB L2 accesses per second.", l2_r,
+                   "insns/s"),
+            MetricGroup("lpm_dtlb_l2_4kb", [
+                Metric(
+                    "lpm_dtlb_l2_4kb_hits",
+                    "DTLB L2 4kb page size hits as percentage of all DTLB L2 4kb "
+                    "accesses.", d_ratio(d_h4k, d_h4k + d_m4k), "100%"),
+                Metric(
+                    "lpm_dtlb_l2_4kb_miss",
+                    "DTLB L2 4kb page size misses as percentage of all DTLB L2 4kb"
+                    "accesses.", d_ratio(d_m4k, d_h4k + d_m4k), "100%")
+            ]),
+            MetricGroup("lpm_dtlb_l2_coalesced", [
+                Metric(
+                    "lpm_dtlb_l2_coal_hits",
+                    "DTLB L2 coalesced page (16kb) hits as percentage of all DTLB "
+                    "L2 coalesced accesses.", d_ratio(d_hcoal,
+                                                      d_hcoal + d_mcoal), "100%"),
+                Metric(
+                    "lpm_dtlb_l2_coal_miss",
+                    "DTLB L2 coalesced page (16kb) misses as percentage of all "
+                    "DTLB L2 coalesced accesses.",
+                    d_ratio(d_mcoal, d_hcoal + d_mcoal), "100%")
+            ]),
+            MetricGroup("lpm_dtlb_l2_2mb", [
+                Metric(
+                    "lpm_dtlb_l2_2mb_hits",
+                    "DTLB L2 2mb page size hits as percentage of all DTLB L2 2mb "
+                    "accesses.", d_ratio(d_h2m, d_h2m + d_m2m), "100%"),
+                Metric(
+                    "lpm_dtlb_l2_2mb_miss",
+                    "DTLB L2 2mb page size misses as percentage of all DTLB L2 "
+                    "accesses.", d_ratio(d_m2m, d_h2m + d_m2m), "100%")
+            ]),
+            MetricGroup("lpm_dtlb_l2_1g", [
+                Metric(
+                    "lpm_dtlb_l2_1g_hits",
+                    "DTLB L2 1gb page size hits as percentage of all DTLB L2 1gb "
+                    "accesses.", d_ratio(d_h1g, d_h1g + d_m1g), "100%"),
+                Metric(
+                    "lpm_dtlb_l2_1g_miss",
+                    "DTLB L2 1gb page size misses as percentage of all DTLB L2 "
+                    "1gb accesses.", d_ratio(d_m1g, d_h1g + d_m1g), "100%")
+            ]),
+        ]),
+        MetricGroup("lpm_dtlb_walks", [
+            Metric("lpm_dtlb_walks_reqs", "DTLB page table walks per second.",
+                   walks_r, "walks/s"),
+        ]),
+    ], description="Data TLB metrics")
+
+
 def AmdItlb():
     global _zen_model
     l2h = Event("bp_l1_tlb_miss_l2_tlb_hit", "bp_l1_tlb_miss_l2_hit")
@@ -235,6 +345,7 @@ def main() -> None:
 
     all_metrics = MetricGroup("", [
         AmdBr(),
+        AmdDtlb(),
         AmdItlb(),
         AmdUpc(),
         Idle(),
-- 
2.52.0.158.g65b55ccf14-goog