On Fri, Jun 02, 2023 at 02:59:54PM +0800, menglong8.dong@xxxxxxxxx wrote:
> From: Menglong Dong <imagedong@xxxxxxxxxxx>
>
> According to the current kernel version, below is a statistics of the
> function arguments count:
>
> argument count | FUNC_PROTO count
> 7 | 367
> 8 | 196
> 9 | 71
> 10 | 43
> 11 | 22
> 12 | 10
> 13 | 15
> 14 | 4
> 15 | 0
> 16 | 1
>
> It's hard to statisics the function count, so I use FUNC_PROTO in the btf
> of vmlinux instead. The function with 16 arguments is ZSTD_buildCTable(),
> which I think can be ignored.
>
> Therefore, let's make the maximum of function arguments count 14. It used
> to be 12, but it seems that there is no harm to make it big enough.
>
> Reviewed-by: Jiang Biao <benbjiang@xxxxxxxxxxx>
> Signed-off-by: Menglong Dong <imagedong@xxxxxxxxxxx>
> ---
> include/linux/bpf.h | 9 +++++----
> 1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/include/linux/bpf.h b/include/linux/bpf.h
> index f58895830ada..8b997779faf7 100644
> --- a/include/linux/bpf.h
> +++ b/include/linux/bpf.h
> @@ -961,10 +961,10 @@ enum bpf_cgroup_storage_type {
>
> #define MAX_BPF_CGROUP_STORAGE_TYPE __BPF_CGROUP_STORAGE_MAX
>
> -/* The longest tracepoint has 12 args.
> - * See include/trace/bpf_probe.h
> +/* The maximun number of the kernel function arguments.
Hi Menglong Dong,
as it looks like there will be a v3 anyway, please
consider correcting the spelling of maximum.
...
