From 6984cbc6dfa280687367b9660d8c830518239851 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andriin@fb.com>
Date: Tue, 7 Jul 2020 18:53:18 -0700
Subject: selftests/bpf: Switch perf_buffer test to tracepoint and skeleton
Switch perf_buffer test to use skeleton to avoid use of bpf_prog_load() and
make test a bit more succinct. Also switch BPF program to use tracepoint
instead of kprobe, as that allows to support older kernels, which had
tracepoint support before kprobe support in the form that libbpf expects
(i.e., libbpf expects /sys/bus/event_source/devices/kprobe/type, which doesn't
always exist on old kernels).
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200708015318.3827358-7-andriin@fb.com
---
tools/testing/selftests/bpf/progs/test_perf_buffer.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
(limited to 'tools/testing/selftests/bpf/progs/test_perf_buffer.c')
diff --git a/tools/testing/selftests/bpf/progs/test_perf_buffer.c b/tools/testing/selftests/bpf/progs/test_perf_buffer.c
index ad59c4c9aba8..8207a2dc2f9d 100644
--- a/tools/testing/selftests/bpf/progs/test_perf_buffer.c
+++ b/tools/testing/selftests/bpf/progs/test_perf_buffer.c
@@ -12,8 +12,8 @@ struct {
__uint(value_size, sizeof(int));
} perf_buf_map SEC(".maps");
-SEC("kprobe/sys_nanosleep")
-int BPF_KPROBE(handle_sys_nanosleep_entry)
+SEC("tp/raw_syscalls/sys_enter")
+int handle_sys_enter(void *ctx)
{
int cpu = bpf_get_smp_processor_id();
--
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