linux-kernel - [PATCH 2/3] selftests/bpf: Add selftests for bpf led programs

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Message-ID: <f3167326546a28cb9cfbf347cc98436bfced6210.1711113657.git.hodges.daniel.scott@gmail.com>
Date: Fri, 22 Mar 2024 10:08:15 -0400
From: Daniel Hodges <hodges.daniel.scott@...il.com>
To: ast@...nel.org,
	pavel@....cz,
	lee@...nel.org,
	linux-leds@...r.kernel.org,
	daniel@...earbox.net,
	bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Daniel Hodges <hodges.daniel.scott@...il.com>
Subject: [PATCH 2/3] selftests/bpf: Add selftests for bpf led programs

Add selftests for led trigger bpf programs. To run the tests use the
"test_progs -t ledtrig_bpf" helper.

Signed-off-by: Daniel Hodges <hodges.daniel.scott@...il.com>
---
 tools/testing/selftests/bpf/config            |  1 +
 .../testing/selftests/bpf/progs/ledtrig_bpf.c | 28 +++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/progs/ledtrig_bpf.c

diff --git a/tools/testing/selftests/bpf/config b/tools/testing/selftests/bpf/config
index 01f241ea2c67..17a027905dcd 100644
--- a/tools/testing/selftests/bpf/config
+++ b/tools/testing/selftests/bpf/config
@@ -42,6 +42,7 @@ CONFIG_IPV6_SEG6_BPF=y
 CONFIG_IPV6_SIT=y
 CONFIG_IPV6_TUNNEL=y
 CONFIG_KEYS=y
+CONFIG_LEDS_TRIGGER_BPF=y
 CONFIG_LIRC=y
 CONFIG_LWTUNNEL=y
 CONFIG_MODULE_SIG=y
diff --git a/tools/testing/selftests/bpf/progs/ledtrig_bpf.c b/tools/testing/selftests/bpf/progs/ledtrig_bpf.c
new file mode 100644
index 000000000000..8bf1044e6896
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/ledtrig_bpf.c
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <vmlinux.h>
+
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+#include <bpf/bpf_core_read.h>
+
+
+extern void bpf_ledtrig_blink(unsigned long delay_on, unsigned long delay_off,
+		int invert) __weak __ksym;
+
+
+SEC("perf_event")
+int perf_blink(void)
+{
+	bpf_ledtrig_blink(30, 30, 0);
+	return 0;
+}
+
+
+SEC("syscall")
+int fork_blink(void)
+{
+	bpf_ledtrig_blink(30, 30, 0);
+	return 0;
+}
+
+char LICENSE[] SEC("license") = "GPL";
-- 
2.43.0