netdev - [PATCH bpf-next v2 2/2] selftests/bpf: test the jited inline of bpf_get_current

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Message-ID: <20260104131635.27621-3-dongml2@chinatelecom.cn>
Date: Sun,  4 Jan 2026 21:16:35 +0800
From: Menglong Dong <menglong8.dong@...il.com>
To: ast@...nel.org,
	eddyz87@...il.com
Cc: davem@...emloft.net,
	dsahern@...nel.org,
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Subject: [PATCH bpf-next v2 2/2] selftests/bpf: test the jited inline of bpf_get_current_task

Add the testcase for the jited inline of bpf_get_current_task().

Signed-off-by: Menglong Dong <dongml2@...natelecom.cn>
---
 .../selftests/bpf/prog_tests/verifier.c       |  2 ++
 .../selftests/bpf/progs/verifier_jit_inline.c | 35 +++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/progs/verifier_jit_inline.c

diff --git a/tools/testing/selftests/bpf/prog_tests/verifier.c b/tools/testing/selftests/bpf/prog_tests/verifier.c
index 5829ffd70f8f..47eb78c808c0 100644
--- a/tools/testing/selftests/bpf/prog_tests/verifier.c
+++ b/tools/testing/selftests/bpf/prog_tests/verifier.c
@@ -110,6 +110,7 @@
 #include "verifier_xdp_direct_packet_access.skel.h"
 #include "verifier_bits_iter.skel.h"
 #include "verifier_lsm.skel.h"
+#include "verifier_jit_inline.skel.h"
 #include "irq.skel.h"
 
 #define MAX_ENTRIES 11
@@ -251,6 +252,7 @@ void test_verifier_bits_iter(void) { RUN(verifier_bits_iter); }
 void test_verifier_lsm(void)                  { RUN(verifier_lsm); }
 void test_irq(void)			      { RUN(irq); }
 void test_verifier_mtu(void)		      { RUN(verifier_mtu); }
+void test_verifier_jit_inline(void)               { RUN(verifier_jit_inline); }
 
 static int init_test_val_map(struct bpf_object *obj, char *map_name)
 {
diff --git a/tools/testing/selftests/bpf/progs/verifier_jit_inline.c b/tools/testing/selftests/bpf/progs/verifier_jit_inline.c
new file mode 100644
index 000000000000..398a6405d00a
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/verifier_jit_inline.c
@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <vmlinux.h>
+#include <bpf/bpf_helpers.h>
+#include "bpf_misc.h"
+
+#if defined(__TARGET_ARCH_x86) || defined(__TARGET_ARCH_arm64)
+
+SEC("fentry/bpf_fentry_test1")
+__description("Jit inline, bpf_get_current_task")
+__success __retval(0)
+__arch_x86_64
+__jited("	movq	%gs:{{.*}}, %rax")
+__arch_arm64
+__jited("	mrs	x7, SP_EL0")
+int inline_bpf_get_current_task(void)
+{
+	bpf_get_current_task();
+
+	return 0;
+}
+
+#else
+
+SEC("kprobe")
+__description("Jit inline is not supported, use a dummy test")
+__success
+int dummy_test(void)
+{
+	return 0;
+}
+
+#endif
+
+char _license[] SEC("license") = "GPL";
-- 
2.52.0