From: Andrii Nakryiko <andrii@kernel.org>
To: <bpf@vger.kernel.org>, <netdev@vger.kernel.org>, <ast@fb.com>,
<daniel@iogearbox.net>
Cc: <andrii@kernel.org>, <kernel-team@fb.com>
Subject: [PATCH bpf-next 6/7] selftests/bpf: make BPF sidecar traceable function global
Date: Fri, 20 Nov 2020 18:46:15 -0800 [thread overview]
Message-ID: <20201121024616.1588175-7-andrii@kernel.org> (raw)
In-Reply-To: <20201121024616.1588175-1-andrii@kernel.org>
Pahole currently isn't able to generate BTF for static functions in kernel
modules, so make sure traced sidecar function is global.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
---
tools/testing/selftests/bpf/bpf_sidecar/bpf_sidecar.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/bpf/bpf_sidecar/bpf_sidecar.c b/tools/testing/selftests/bpf/bpf_sidecar/bpf_sidecar.c
index 46f48c20d99b..a2f6d4a15a3f 100644
--- a/tools/testing/selftests/bpf/bpf_sidecar/bpf_sidecar.c
+++ b/tools/testing/selftests/bpf/bpf_sidecar/bpf_sidecar.c
@@ -10,7 +10,7 @@
#define CREATE_TRACE_POINTS
#include "bpf_sidecar-events.h"
-static noinline ssize_t
+noinline ssize_t
bpf_sidecar_test_read(struct file *file, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t len)
@@ -25,6 +25,7 @@ bpf_sidecar_test_read(struct file *file, struct kobject *kobj,
return -EIO; /* always fail */
}
+EXPORT_SYMBOL(bpf_sidecar_test_read);
ALLOW_ERROR_INJECTION(bpf_sidecar_test_read, ERRNO);
static struct bin_attribute bin_attr_bpf_sidecar_file __ro_after_init = {
--
2.24.1
next prev parent reply other threads:[~2020-11-21 2:46 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-21 2:46 [PATCH bpf-next 0/7] Add kernel modules support for tracing BPF program attachments Andrii Nakryiko
2020-11-21 2:46 ` [PATCH bpf-next 1/7] bpf: remove hard-coded btf_vmlinux assumption from BPF verifier Andrii Nakryiko
2020-11-29 1:56 ` Alexei Starovoitov
2020-11-30 23:04 ` Andrii Nakryiko
2020-12-01 1:18 ` Alexei Starovoitov
2020-11-21 2:46 ` [PATCH bpf-next 2/7] bpf: allow to specify kernel module BTFs when attaching BPF programs Andrii Nakryiko
2020-11-21 2:46 ` [PATCH bpf-next 3/7] libbpf: factor out low-level BPF program loading helper Andrii Nakryiko
2020-11-21 2:46 ` [PATCH bpf-next 4/7] libbpf: support attachment of BPF tracing programs to kernel modules Andrii Nakryiko
2020-11-21 2:46 ` [PATCH bpf-next 5/7] selftests/bpf: add tp_btf CO-RE reloc test for modules Andrii Nakryiko
2020-11-29 1:59 ` Alexei Starovoitov
2020-11-30 22:52 ` Andrii Nakryiko
2020-11-30 22:55 ` Alexei Starovoitov
2020-11-21 2:46 ` Andrii Nakryiko [this message]
2020-11-21 2:46 ` [PATCH bpf-next 7/7] selftests/bpf: add fentry/fexit/fmod_ret selftest for kernel module Andrii Nakryiko
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