From a66f6242fbf521f8371d6cda5eaee6dc7668683b Mon Sep 17 00:00:00 2001
From: James Clark <james.clark@linaro.org>
Date: Wed, 31 Dec 2025 12:12:28 +0000
Subject: [PATCH] perf vendor events arm64: Remove uncountable events

These events are never countable by the PMU and are only intended to
be used as external inputs to trace. Therefore showing them in 'perf
list' is misleading so remove them.

The generator script doesn't emit these events when used with the new
telemetry-solution input files [1].

'perf list' should only show countable events because there are events
that are sometimes implemented, sometimes countable and sometimes not,
for example TRB_TRIG. If we always include any implemented events
whether they are countable or not then it's not possible to tell whether
they are usable in perf without going to the docs, defeating the point
of 'perf list'.

It's also not useful yet to display implemented events that are not
countable (for help in using trace rather than perf stat), because
PMU_OVFS and PMU_HOVFS are practically always implemented and TRB_TRIG
is always implemented when there is TRBE.

[1]: https://gitlab.arm.com/telemetry-solution/telemetry-solution/-/tree/main/data/pmu/cpu

Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Akio Kakuno <fj3333bs@aa.jp.fujitsu.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshihiro Furudera <fj5100bi@fujitsu.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 .../pmu-events/arch/arm64/arm/cortex-a510/pmu.json   |  8 --------
 .../pmu-events/arch/arm64/common-and-microarch.json  | 12 ------------
 .../pmu-events/arch/arm64/fujitsu/monaka/pmu.json    | 10 ----------
 3 files changed, 30 deletions(-)
 delete mode 100644 tools/perf/pmu-events/arch/arm64/arm/cortex-a510/pmu.json
 delete mode 100644 tools/perf/pmu-events/arch/arm64/fujitsu/monaka/pmu.json

diff --git a/tools/perf/pmu-events/arch/arm64/arm/cortex-a510/pmu.json b/tools/perf/pmu-events/arch/arm64/arm/cortex-a510/pmu.json
deleted file mode 100644
index d8b7b9f9e5fa5..0000000000000
--- a/tools/perf/pmu-events/arch/arm64/arm/cortex-a510/pmu.json
+++ /dev/null
@@ -1,8 +0,0 @@
-[
-    {
-        "ArchStdEvent": "PMU_OVFS"
-    },
-    {
-        "ArchStdEvent": "PMU_HOVFS"
-    }
-]
diff --git a/tools/perf/pmu-events/arch/arm64/common-and-microarch.json b/tools/perf/pmu-events/arch/arm64/common-and-microarch.json
index 2416d9f8a83d7..468cb085d8796 100644
--- a/tools/perf/pmu-events/arch/arm64/common-and-microarch.json
+++ b/tools/perf/pmu-events/arch/arm64/common-and-microarch.json
@@ -432,24 +432,12 @@
         "EventName": "TRB_WRAP",
         "BriefDescription": "Trace buffer current write pointer wrapped"
     },
-    {
-        "PublicDescription": "PMU overflow, counters accessible to EL1 and EL0",
-        "EventCode": "0x400D",
-        "EventName": "PMU_OVFS",
-        "BriefDescription": "PMU overflow, counters accessible to EL1 and EL0"
-    },
     {
         "PublicDescription": "Trace buffer Trigger Event",
         "EventCode": "0x400E",
         "EventName": "TRB_TRIG",
         "BriefDescription": "Trace buffer Trigger Event"
     },
-    {
-        "PublicDescription": "PMU overflow, counters reserved for use by EL2",
-        "EventCode": "0x400F",
-        "EventName": "PMU_HOVFS",
-        "BriefDescription": "PMU overflow, counters reserved for use by EL2"
-    },
     {
         "PublicDescription": "PE Trace Unit external output 0",
         "EventCode": "0x4010",
diff --git a/tools/perf/pmu-events/arch/arm64/fujitsu/monaka/pmu.json b/tools/perf/pmu-events/arch/arm64/fujitsu/monaka/pmu.json
deleted file mode 100644
index 65bd6cdd0dd5f..0000000000000
--- a/tools/perf/pmu-events/arch/arm64/fujitsu/monaka/pmu.json
+++ /dev/null
@@ -1,10 +0,0 @@
-[
-    {
-        "ArchStdEvent": "PMU_OVFS",
-        "BriefDescription": "This event counts the event generated each time one of the condition occurs described in Arm Architecture Reference Manual for A-profile architecture. This event is only for output to the trace unit."
-    },
-    {
-        "ArchStdEvent": "PMU_HOVFS",
-        "BriefDescription": "This event counts the event generated each time an event is counted by an event counter <n> and all of the condition occur described in Arm Architecture Reference Manual for A-profile architecture. This event is only for output to the trace unit."
-    }
-]
-- 
2.47.3