diff mbox series

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

Message ID tencent_9E0636426959DE97692A50AF79A3D9888B08@qq.com (mailing list archive)
State Rejected
Delegated to: BPF
Headers show
Series [bpf-next] samples: bpf: Add macro SYSCALL() for aarch64 | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for bpf-next
netdev/apply fail Patch does not apply to bpf-next

Commit Message

Rong Tao Feb. 6, 2023, 11:27 a.m. UTC
From: Rong Tao <rongtao@cestc.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@cestc.cn>
---
 samples/bpf/trace_common.h | 2 ++
 1 file changed, 2 insertions(+)

Comments

Andrii Nakryiko Feb. 6, 2023, 10:54 p.m. UTC | #1
On Mon, Feb 6, 2023 at 3:34 AM Rong Tao <rtoax@foxmail.com> wrote:
>
> From: Rong Tao <rongtao@cestc.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@cestc.cn>
> ---

samples were converted to SEC("ksyscall") programs and BPF_KSYSCALL()
macro, there is not even samples/bpf/trace_common.h there. Please
check the latest bpf-next/master.


>  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
>
diff mbox series

Patch

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