linux-kernel - [PATCH bpf-next] samples: bpf: Add macro SYSCALL() for aarch64

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Message-ID: <tencent_9E0636426959DE97692A50AF79A3D9888B08@qq.com>
Date:   Mon,  6 Feb 2023 19:27:57 +0800
From:   Rong Tao <rtoax@...mail.com>
To:     ast@...nel.org
Cc:     Rong Tao <rongtao@...tc.cn>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Song Liu <song@...nel.org>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        bpf@...r.kernel.org (open list:BPF [GENERAL] (Safe Dynamic Programs and
        Tools)), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH bpf-next] samples: bpf: Add macro SYSCALL() for aarch64

From: Rong Tao <rongtao@...tc.cn>

kernel arm64/kernel/sys.c macro __SYSCALL() adds a prefix __arm64_, we
should support it for aarch64. The following is the output of the bpftrace
script:

    $ sudo bpftrace -l | grep sys_write
    ...
    kprobe:__arm64_sys_write
    kprobe:__arm64_sys_writev
    ...

Signed-off-by: Rong Tao <rongtao@...tc.cn>
---
 samples/bpf/trace_common.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/samples/bpf/trace_common.h b/samples/bpf/trace_common.h
index 8cb5400aed1f..fafc699af0a3 100644
--- a/samples/bpf/trace_common.h
+++ b/samples/bpf/trace_common.h
@@ -6,6 +6,8 @@
 #define SYSCALL(SYS) "__x64_" __stringify(SYS)
 #elif defined(__s390x__)
 #define SYSCALL(SYS) "__s390x_" __stringify(SYS)
+#elif defined(__aarch64__)
+#define SYSCALL(SYS) "__arm64_" __stringify(SYS)
 #else
 #define SYSCALL(SYS)  __stringify(SYS)
 #endif
-- 
2.39.1