linux-kernel - [PATCH 5/6] tools/perf/json: Add cache metrics for s390 z13

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Date:   Mon, 13 Mar 2023 09:02:00 +0100
From:   Thomas Richter <tmricht@...ux.ibm.com>
To:     linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        acme@...nel.org, sumanthk@...ux.ibm.com
Cc:     svens@...ux.ibm.com, gor@...ux.ibm.com, hca@...ux.ibm.com,
        Thomas Richter <tmricht@...ux.ibm.com>
Subject: [PATCH 5/6] tools/perf/json: Add cache metrics for s390 z13

Add metrics for s390 z13
- Percentage sourced from Level 2 cache
- Percentage sourced from Level 3 on same chip cache
- Percentage sourced from Level 4 Local cache on same book
- Percentage sourced from Level 4 Remote cache on different book
- Percentage sourced from memory

For details about the formulas see this documentation:
https://www.ibm.com/support/pages/system/files/inline-files/CPU%20MF%20Formulas%20including%20z16%20-%20May%202022_1.pdf

Output after:

 # ./perf stat -M l4rp -- find /
   ...find output deleted

 Performance counter stats for 'find /':

            2      L1I_OFFDRAWER_SCOL_L4_SOURCED_WRITES #     0.02 l4rp
          252      L1D_ONDRAWER_L4_SOURCED_WRITES
        3,465      L1D_ONDRAWER_L3_SOURCED_WRITES_IV
           80      L1D_OFFDRAWER_SCOL_L4_SOURCED_WRITES
          761      L1D_ONDRAWER_L3_SOURCED_WRITES
            0      L1I_OFFDRAWER_SCOL_L3_SOURCED_WRITES
  131,817,067      L1I_DIR_WRITES
            1      L1I_OFFDRAWER_FCOL_L4_SOURCED_WRITES
          447      L1D_OFFDRAWER_SCOL_L3_SOURCED_WRITES
           22      L1D_OFFDRAWER_FCOL_L4_SOURCED_WRITES
            7      L1I_ONDRAWER_L4_SOURCED_WRITES
            0      L1I_OFFDRAWER_FCOL_L3_SOURCED_WRITES
        1,071      L1D_OFFDRAWER_FCOL_L3_SOURCED_WRITES
            3      L1I_ONDRAWER_L3_SOURCED_WRITES
       13,352      L1D_OFFDRAWER_FCOL_L3_SOURCED_WRITES_IV
       15,252      L1D_OFFDRAWER_SCOL_L3_SOURCED_WRITES_IV
            0      L1I_ONDRAWER_L3_SOURCED_WRITES_IV
            0      L1I_OFFDRAWER_FCOL_L3_SOURCED_WRITES_IV
   57,431,083      L1D_DIR_WRITES
            0      L1I_OFFDRAWER_SCOL_L3_SOURCED_WRITES_IV

      15.386502874 seconds time elapsed

       0.647348000 seconds user
       3.537041000 seconds sys

 #

Signed-off-by: Thomas Richter <tmricht@...ux.ibm.com>
Acked-By: Sumanth Korikkar <sumanthk@...ux.ibm.com>
---
 .../arch/s390/cf_z13/transaction.json         | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/tools/perf/pmu-events/arch/s390/cf_z13/transaction.json b/tools/perf/pmu-events/arch/s390/cf_z13/transaction.json
index 86bf83b4504e..71e2c7fa734c 100644
--- a/tools/perf/pmu-events/arch/s390/cf_z13/transaction.json
+++ b/tools/perf/pmu-events/arch/s390/cf_z13/transaction.json
@@ -18,5 +18,30 @@
     "BriefDescription": "Level One Miss per 100 Instructions",
     "MetricName": "l1mp",
     "MetricExpr": "((L1I_DIR_WRITES + L1D_DIR_WRITES) / INSTRUCTIONS) * 100"
+  },
+  {
+    "BriefDescription": "Percentage sourced from Level 2 cache",
+    "MetricName": "l2p",
+    "MetricExpr": "((L1D_L2D_SOURCED_WRITES + L1I_L2I_SOURCED_WRITES) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
+  },
+  {
+    "BriefDescription": "Percentage sourced from Level 3 on same chip cache",
+    "MetricName": "l3p",
+    "MetricExpr": "((L1D_ONCHIP_L3_SOURCED_WRITES + L1D_ONCHIP_L3_SOURCED_WRITES_IV + L1I_ONCHIP_L3_SOURCED_WRITES + L1I_ONCHIP_L3_SOURCED_WRITES_IV) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
+  },
+  {
+    "BriefDescription": "Percentage sourced from Level 4 Local cache on same book",
+    "MetricName": "l4lp",
+    "MetricExpr": "((L1D_ONNODE_L4_SOURCED_WRITES + L1D_ONNODE_L3_SOURCED_WRITES_IV + L1D_ONNODE_L3_SOURCED_WRITES + L1I_ONNODE_L4_SOURCED_WRITES + L1I_ONNODE_L3_SOURCED_WRITES_IV + L1I_ONNODE_L3_SOURCED_WRITES) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
+  },
+  {
+    "BriefDescription": "Percentage sourced from Level 4 Remote cache on different book",
+    "MetricName": "l4rp",
+    "MetricExpr": "((L1D_ONDRAWER_L4_SOURCED_WRITES + L1D_ONDRAWER_L3_SOURCED_WRITES_IV + L1D_ONDRAWER_L3_SOURCED_WRITES + L1D_OFFDRAWER_SCOL_L4_SOURCED_WRITES + L1D_OFFDRAWER_SCOL_L3_SOURCED_WRITES_IV + L1D_OFFDRAWER_SCOL_L3_SOURCED_WRITES + L1D_OFFDRAWER_FCOL_L4_SOURCED_WRITES + L1D_OFFDRAWER_FCOL_L3_SOURCED_WRITES_IV + L1D_OFFDRAWER_FCOL_L3_SOURCED_WRITES + L1I_ONDRAWER_L4_SOURCED_WRITES + L1I_ONDRAWER_L3_SOURCED_WRITES_IV + L1I_ONDRAWER_L3_SOURCED_WRITES + L1I_OFFDRAWER_SCOL_L4_SOURCED_WRITES + L1I_OFFDRAWER_SCOL_L3_SOURCED_WRITES_IV + L1I_OFFDRAWER_SCOL_L3_SOURCED_WRITES + L1I_OFFDRAWER_FCOL_L4_SOURCED_WRITES + L1I_OFFDRAWER_FCOL_L3_SOURCED_WRITES_IV + L1I_OFFDRAWER_FCOL_L3_SOURCED_WRITES) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
+  },
+  {
+    "BriefDescription": "Percentage sourced from memory",
+    "MetricName": "memp",
+    "MetricExpr": "((L1D_ONNODE_MEM_SOURCED_WRITES + L1D_ONDRAWER_MEM_SOURCED_WRITES + L1D_OFFDRAWER_MEM_SOURCED_WRITES + L1D_ONCHIP_MEM_SOURCED_WRITES + L1I_ONNODE_MEM_SOURCED_WRITES + L1I_ONDRAWER_MEM_SOURCED_WRITES + L1I_OFFDRAWER_MEM_SOURCED_WRITES + L1I_ONCHIP_MEM_SOURCED_WRITES) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
   }
 ]
-- 
2.39.1