From: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
To: Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Shuah Khan <skhan@linuxfoundation.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org
Subject: [PATCH v1 2/4] selftests/ftrace: Add boot-time tracing testcases
Date: Mon, 10 Aug 2026 18:34:03 +0900 [thread overview]
Message-ID: <178635444365.380779.6077913945595364034.stgit@devnote2> (raw)
In-Reply-To: <178635442508.380779.3709136256425432083.stgit@devnote2>
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Add test cases for boot-time tracing configuration via bootconfig
(see Documentation/trace/boottime-trace.rst).
These test cases verify:
- 01-kprobe: Dynamic kprobe events via bootconfig
- 02-synth: Synthetic events via bootconfig
- 03-eprobe: Event probes (eprobes) via bootconfig
- 04-fprobe: Function probes (fprobes) via bootconfig
- 05-tprobe: Tracepoint probes via bootconfig
- 06-instance: Custom trace instances via bootconfig
Assisted-by: Antigravity:gemini-3.6-flash
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
---
.../ftrace/boottime/bootconfigs/01-kprobe.bconf | 4 +++
.../ftrace/boottime/bootconfigs/02-synth.bconf | 4 +++
.../ftrace/boottime/bootconfigs/03-eprobe.bconf | 4 +++
.../ftrace/boottime/bootconfigs/04-fprobe.bconf | 4 +++
.../ftrace/boottime/bootconfigs/05-tprobe.bconf | 4 +++
.../ftrace/boottime/bootconfigs/06-instance.bconf | 5 +++
.../selftests/ftrace/boottime/tests/01-kprobe.sh | 25 +++++++++++++++++
.../selftests/ftrace/boottime/tests/02-synth.sh | 25 +++++++++++++++++
.../selftests/ftrace/boottime/tests/03-eprobe.sh | 25 +++++++++++++++++
.../selftests/ftrace/boottime/tests/04-fprobe.sh | 25 +++++++++++++++++
.../selftests/ftrace/boottime/tests/05-tprobe.sh | 25 +++++++++++++++++
.../selftests/ftrace/boottime/tests/06-instance.sh | 30 ++++++++++++++++++++
12 files changed, 180 insertions(+)
create mode 100644 tools/testing/selftests/ftrace/boottime/bootconfigs/01-kprobe.bconf
create mode 100644 tools/testing/selftests/ftrace/boottime/bootconfigs/02-synth.bconf
create mode 100644 tools/testing/selftests/ftrace/boottime/bootconfigs/03-eprobe.bconf
create mode 100644 tools/testing/selftests/ftrace/boottime/bootconfigs/04-fprobe.bconf
create mode 100644 tools/testing/selftests/ftrace/boottime/bootconfigs/05-tprobe.bconf
create mode 100644 tools/testing/selftests/ftrace/boottime/bootconfigs/06-instance.bconf
create mode 100644 tools/testing/selftests/ftrace/boottime/tests/01-kprobe.sh
create mode 100644 tools/testing/selftests/ftrace/boottime/tests/02-synth.sh
create mode 100644 tools/testing/selftests/ftrace/boottime/tests/03-eprobe.sh
create mode 100644 tools/testing/selftests/ftrace/boottime/tests/04-fprobe.sh
create mode 100644 tools/testing/selftests/ftrace/boottime/tests/05-tprobe.sh
create mode 100644 tools/testing/selftests/ftrace/boottime/tests/06-instance.sh
diff --git a/tools/testing/selftests/ftrace/boottime/bootconfigs/01-kprobe.bconf b/tools/testing/selftests/ftrace/boottime/bootconfigs/01-kprobe.bconf
new file mode 100644
index 000000000000..13d30d1e51a6
--- /dev/null
+++ b/tools/testing/selftests/ftrace/boottime/bootconfigs/01-kprobe.bconf
@@ -0,0 +1,4 @@
+ftrace.event.kprobes.vfs_read {
+ probes = "vfs_read $arg1"
+ enable
+}
diff --git a/tools/testing/selftests/ftrace/boottime/bootconfigs/02-synth.bconf b/tools/testing/selftests/ftrace/boottime/bootconfigs/02-synth.bconf
new file mode 100644
index 000000000000..b1f37713f33c
--- /dev/null
+++ b/tools/testing/selftests/ftrace/boottime/bootconfigs/02-synth.bconf
@@ -0,0 +1,4 @@
+ftrace.event.synthetic.boot_lat {
+ fields = "unsigned long id", "u64 delta"
+ enable
+}
diff --git a/tools/testing/selftests/ftrace/boottime/bootconfigs/03-eprobe.bconf b/tools/testing/selftests/ftrace/boottime/bootconfigs/03-eprobe.bconf
new file mode 100644
index 000000000000..c1a8138e605d
--- /dev/null
+++ b/tools/testing/selftests/ftrace/boottime/bootconfigs/03-eprobe.bconf
@@ -0,0 +1,4 @@
+ftrace.event.eprobes.ep_read {
+ probes = "sched/sched_switch"
+ enable
+}
diff --git a/tools/testing/selftests/ftrace/boottime/bootconfigs/04-fprobe.bconf b/tools/testing/selftests/ftrace/boottime/bootconfigs/04-fprobe.bconf
new file mode 100644
index 000000000000..82ae2ac0629f
--- /dev/null
+++ b/tools/testing/selftests/ftrace/boottime/bootconfigs/04-fprobe.bconf
@@ -0,0 +1,4 @@
+ftrace.event.fprobes.fp_read {
+ probes = "vfs_read"
+ enable
+}
diff --git a/tools/testing/selftests/ftrace/boottime/bootconfigs/05-tprobe.bconf b/tools/testing/selftests/ftrace/boottime/bootconfigs/05-tprobe.bconf
new file mode 100644
index 000000000000..02a2803c770a
--- /dev/null
+++ b/tools/testing/selftests/ftrace/boottime/bootconfigs/05-tprobe.bconf
@@ -0,0 +1,4 @@
+ftrace.event.tracepoints.tp_sched {
+ probes = "sched_switch"
+ enable
+}
diff --git a/tools/testing/selftests/ftrace/boottime/bootconfigs/06-instance.bconf b/tools/testing/selftests/ftrace/boottime/bootconfigs/06-instance.bconf
new file mode 100644
index 000000000000..3fdb6717afe2
--- /dev/null
+++ b/tools/testing/selftests/ftrace/boottime/bootconfigs/06-instance.bconf
@@ -0,0 +1,5 @@
+ftrace.instance.foo {
+ event.sched.sched_switch {
+ enable
+ }
+}
diff --git a/tools/testing/selftests/ftrace/boottime/tests/01-kprobe.sh b/tools/testing/selftests/ftrace/boottime/tests/01-kprobe.sh
new file mode 100644
index 000000000000..6ed7caca4c5f
--- /dev/null
+++ b/tools/testing/selftests/ftrace/boottime/tests/01-kprobe.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2026, Google LLC.
+# Check kprobe bootconfig settings on tracefs
+TRACEDIR="/sys/kernel/tracing"
+
+if [ -f /proc/bootconfig ] && grep -q "dump_bconf" /proc/cmdline 2>/dev/null; then
+ echo "=== /proc/bootconfig ==="
+ cat /proc/bootconfig
+ echo "========================"
+fi
+
+if [ ! -d "$TRACEDIR/events/kprobes/vfs_read" ]; then
+ echo "FAIL: kprobe event kprobes/vfs_read does not exist"
+ exit 1
+fi
+
+ENABLE=$(cat "$TRACEDIR/events/kprobes/vfs_read/enable")
+if [ "$ENABLE" != "1" ]; then
+ echo "FAIL: kprobe event kprobes/vfs_read is not enabled ($ENABLE)"
+ exit 1
+fi
+
+echo "PASS: 01-kprobe"
+exit 0
diff --git a/tools/testing/selftests/ftrace/boottime/tests/02-synth.sh b/tools/testing/selftests/ftrace/boottime/tests/02-synth.sh
new file mode 100644
index 000000000000..745c328dde15
--- /dev/null
+++ b/tools/testing/selftests/ftrace/boottime/tests/02-synth.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2026, Google LLC.
+# Check synthetic event bootconfig settings on tracefs
+TRACEDIR="/sys/kernel/tracing"
+
+if [ -f /proc/bootconfig ] && grep -q "dump_bconf" /proc/cmdline 2>/dev/null; then
+ echo "=== /proc/bootconfig ==="
+ cat /proc/bootconfig
+ echo "========================"
+fi
+
+if [ ! -d "$TRACEDIR/events/synthetic/boot_lat" ]; then
+ echo "FAIL: synthetic event synthetic/boot_lat does not exist"
+ exit 1
+fi
+
+ENABLE=$(cat "$TRACEDIR/events/synthetic/boot_lat/enable")
+if [ "$ENABLE" != "1" ]; then
+ echo "FAIL: synthetic event synthetic/boot_lat is not enabled ($ENABLE)"
+ exit 1
+fi
+
+echo "PASS: 02-synth"
+exit 0
diff --git a/tools/testing/selftests/ftrace/boottime/tests/03-eprobe.sh b/tools/testing/selftests/ftrace/boottime/tests/03-eprobe.sh
new file mode 100644
index 000000000000..9b3b7ab23c69
--- /dev/null
+++ b/tools/testing/selftests/ftrace/boottime/tests/03-eprobe.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2026, Google LLC.
+# Check eprobe event bootconfig settings on tracefs
+TRACEDIR="/sys/kernel/tracing"
+
+if [ -f /proc/bootconfig ] && grep -q "dump_bconf" /proc/cmdline 2>/dev/null; then
+ echo "=== /proc/bootconfig ==="
+ cat /proc/bootconfig
+ echo "========================"
+fi
+
+if [ ! -d "$TRACEDIR/events/eprobes/ep_read" ]; then
+ echo "FAIL: eprobe event eprobes/ep_read does not exist"
+ exit 1
+fi
+
+ENABLE=$(cat "$TRACEDIR/events/eprobes/ep_read/enable")
+if [ "$ENABLE" != "1" ]; then
+ echo "FAIL: eprobe event eprobes/ep_read is not enabled ($ENABLE)"
+ exit 1
+fi
+
+echo "PASS: 03-eprobe"
+exit 0
diff --git a/tools/testing/selftests/ftrace/boottime/tests/04-fprobe.sh b/tools/testing/selftests/ftrace/boottime/tests/04-fprobe.sh
new file mode 100644
index 000000000000..27e090c28a4b
--- /dev/null
+++ b/tools/testing/selftests/ftrace/boottime/tests/04-fprobe.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2026, Google LLC.
+# Check fprobe event bootconfig settings on tracefs
+TRACEDIR="/sys/kernel/tracing"
+
+if [ -f /proc/bootconfig ] && grep -q "dump_bconf" /proc/cmdline 2>/dev/null; then
+ echo "=== /proc/bootconfig ==="
+ cat /proc/bootconfig
+ echo "========================"
+fi
+
+if [ ! -d "$TRACEDIR/events/fprobes/fp_read" ]; then
+ echo "FAIL: fprobe event fprobes/fp_read does not exist"
+ exit 1
+fi
+
+ENABLE=$(cat "$TRACEDIR/events/fprobes/fp_read/enable")
+if [ "$ENABLE" != "1" ]; then
+ echo "FAIL: fprobe event fprobes/fp_read is not enabled ($ENABLE)"
+ exit 1
+fi
+
+echo "PASS: 04-fprobe"
+exit 0
diff --git a/tools/testing/selftests/ftrace/boottime/tests/05-tprobe.sh b/tools/testing/selftests/ftrace/boottime/tests/05-tprobe.sh
new file mode 100644
index 000000000000..810d34055f94
--- /dev/null
+++ b/tools/testing/selftests/ftrace/boottime/tests/05-tprobe.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2026, Google LLC.
+# Check tracepoint probe event bootconfig settings on tracefs
+TRACEDIR="/sys/kernel/tracing"
+
+if [ -f /proc/bootconfig ] && grep -q "dump_bconf" /proc/cmdline 2>/dev/null; then
+ echo "=== /proc/bootconfig ==="
+ cat /proc/bootconfig
+ echo "========================"
+fi
+
+if [ ! -d "$TRACEDIR/events/tracepoints/tp_sched" ]; then
+ echo "FAIL: tracepoint probe event tracepoints/tp_sched does not exist"
+ exit 1
+fi
+
+ENABLE=$(cat "$TRACEDIR/events/tracepoints/tp_sched/enable")
+if [ "$ENABLE" != "1" ]; then
+ echo "FAIL: tracepoint probe event tracepoints/tp_sched is not enabled ($ENABLE)"
+ exit 1
+fi
+
+echo "PASS: 05-tprobe"
+exit 0
diff --git a/tools/testing/selftests/ftrace/boottime/tests/06-instance.sh b/tools/testing/selftests/ftrace/boottime/tests/06-instance.sh
new file mode 100644
index 000000000000..f6e8519912e4
--- /dev/null
+++ b/tools/testing/selftests/ftrace/boottime/tests/06-instance.sh
@@ -0,0 +1,30 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2026, Google LLC.
+# Check instance bootconfig settings on tracefs
+TRACEDIR="/sys/kernel/tracing"
+
+if [ -f /proc/bootconfig ] && grep -q "dump_bconf" /proc/cmdline 2>/dev/null; then
+ echo "=== /proc/bootconfig ==="
+ cat /proc/bootconfig
+ echo "========================"
+fi
+
+if [ ! -d "$TRACEDIR/instances/foo" ]; then
+ echo "FAIL: trace instance foo does not exist"
+ exit 1
+fi
+
+if [ ! -d "$TRACEDIR/instances/foo/events/sched/sched_switch" ]; then
+ echo "FAIL: event sched_switch does not exist in instance foo"
+ exit 1
+fi
+
+ENABLE=$(cat "$TRACEDIR/instances/foo/events/sched/sched_switch/enable")
+if [ "$ENABLE" != "1" ]; then
+ echo "FAIL: event sched_switch is not enabled in instance foo ($ENABLE)"
+ exit 1
+fi
+
+echo "PASS: 06-instance"
+exit 0
next prev parent reply other threads:[~2026-08-10 9:34 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-10 9:33 [PATCH v1 0/4] selftests/ftrace: Add a boottime tracing test framework Masami Hiramatsu (Google)
2026-08-10 9:33 ` [PATCH v1 1/4] selftests/ftrace: Add generic boot " Masami Hiramatsu (Google)
2026-08-10 9:34 ` Masami Hiramatsu (Google) [this message]
2026-08-10 9:34 ` [PATCH v1 3/4] selftests/ftrace: Add kernel cmdline tracing testcases Masami Hiramatsu (Google)
2026-08-10 9:34 ` [PATCH v1 4/4] selftests/ftrace: Add persistent ring buffer testcases Masami Hiramatsu (Google)
2026-08-10 14:17 ` Masami Hiramatsu
2026-08-10 14:53 ` [PATCH v1 0/4] selftests/ftrace: Add a boottime tracing test framework Steven Rostedt
2026-08-11 15:22 ` Masami Hiramatsu
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