linux-kernel - [PATCH v1 1/1] perf tools: Add a place to put kernel config fragments for test runs

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Date:   Wed, 28 Jun 2023 11:53:02 +0100
From:   James Clark <james.clark@....com>
To:     linux-perf-users@...r.kernel.org, acme@...nel.org,
        masahiroy@...nel.org, leo.yan@...aro.org, broonie@...nel.org,
        Aishwarya.TCV@....com
Cc:     James Clark <james.clark@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/1] perf tools: Add a place to put kernel config fragments for test runs

Defconfig doesn't give full coverage for a perf test run, so these can
be merged with defconfig to do so. It's not complete yet, but is a
starting point as a place to add to when a specific test needs something
extra to run.

Signed-off-by: James Clark <james.clark@....com>
---
 tools/perf/tests/config-fragments/README |  7 +++++++
 tools/perf/tests/config-fragments/arm64  |  1 +
 tools/perf/tests/config-fragments/config | 11 +++++++++++
 3 files changed, 19 insertions(+)
 create mode 100644 tools/perf/tests/config-fragments/README
 create mode 100644 tools/perf/tests/config-fragments/arm64
 create mode 100644 tools/perf/tests/config-fragments/config

diff --git a/tools/perf/tests/config-fragments/README b/tools/perf/tests/config-fragments/README
new file mode 100644
index 000000000000..fe7de5d93674
--- /dev/null
+++ b/tools/perf/tests/config-fragments/README
@@ -0,0 +1,7 @@
+This folder is for kernel config fragments that can be merged with
+defconfig to give full test coverage of a perf test run. This is only
+an optimistic set as some features require hardware support in order to
+pass and not skip.
+
+'config' is shared across all platforms, and for arch specific files,
+the file name should match that used in the ARCH=... make option.
diff --git a/tools/perf/tests/config-fragments/arm64 b/tools/perf/tests/config-fragments/arm64
new file mode 100644
index 000000000000..64c4ab17cd58
--- /dev/null
+++ b/tools/perf/tests/config-fragments/arm64
@@ -0,0 +1 @@
+CONFIG_CORESIGHT_SOURCE_ETM4X=y
diff --git a/tools/perf/tests/config-fragments/config b/tools/perf/tests/config-fragments/config
new file mode 100644
index 000000000000..c340b3195fca
--- /dev/null
+++ b/tools/perf/tests/config-fragments/config
@@ -0,0 +1,11 @@
+CONFIG_TRACEPOINTS=y
+CONFIG_STACKTRACE=y
+CONFIG_NOP_TRACER=y
+CONFIG_RING_BUFFER=y
+CONFIG_EVENT_TRACING=y
+CONFIG_CONTEXT_SWITCH_TRACER=y
+CONFIG_TRACING=y
+CONFIG_GENERIC_TRACER=y
+CONFIG_FTRACE=y
+CONFIG_FTRACE_SYSCALLS=y
+CONFIG_BRANCH_PROFILE_NONE=y
-- 
2.34.1