linux-kernel - [PATCH RFC bpf-next v2 3/4] selftests/bpf: skip recursive functions for kprobe

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Message-ID: <20250728072637.1035818-4-dongml2@chinatelecom.cn>
Date: Mon, 28 Jul 2025 15:22:52 +0800
From: Menglong Dong <menglong8.dong@...il.com>
To: alexei.starovoitov@...il.com,
	mhiramat@...nel.org
Cc: rostedt@...dmis.org,
	mathieu.desnoyers@...icios.com,
	hca@...ux.ibm.com,
	revest@...omium.org,
	linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	bpf@...r.kernel.org
Subject: [PATCH RFC bpf-next v2 3/4] selftests/bpf: skip recursive functions for kprobe_multi

Some functions is recursive for the kprobe_multi and impact the benchmark
results. So just skip them.

Signed-off-by: Menglong Dong <dongml2@...natelecom.cn>
---
 tools/testing/selftests/bpf/trace_helpers.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/tools/testing/selftests/bpf/trace_helpers.c b/tools/testing/selftests/bpf/trace_helpers.c
index d24baf244d1f..9da9da51b132 100644
--- a/tools/testing/selftests/bpf/trace_helpers.c
+++ b/tools/testing/selftests/bpf/trace_helpers.c
@@ -559,6 +559,22 @@ static bool skip_entry(char *name)
 	if (!strncmp(name, "__ftrace_invalid_address__",
 		     sizeof("__ftrace_invalid_address__") - 1))
 		return true;
+
+	if (!strcmp(name, "migrate_disable"))
+		return true;
+	if (!strcmp(name, "migrate_enable"))
+		return true;
+	if (!strcmp(name, "rcu_read_unlock_strict"))
+		return true;
+	if (!strcmp(name, "preempt_count_add"))
+		return true;
+	if (!strcmp(name, "preempt_count_sub"))
+		return true;
+	if (!strcmp(name, "__rcu_read_lock"))
+		return true;
+	if (!strcmp(name, "__rcu_read_unlock"))
+		return true;
+
 	return false;
 }
 
-- 
2.50.1