Re: [PATCH RFC net-next 01/14] net: filter: split filter.c into two files

[Namhyung Kim <namhyung@gmail.com>]

Hi Alexei,

On Fri, 27 Jun 2014 17:05:53 -0700, Alexei Starovoitov wrote:
> BPF is used in several kernel components. This split creates logical boundary
> between generic eBPF core and the rest
>
> kernel/bpf/core.c: eBPF interpreter
>
> net/core/filter.c: classic->eBPF converter, classic verifiers, socket filters
>
> This patch only moves functions.
>
> Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
> ---
>  kernel/Makefile     |    1 +
>  kernel/bpf/Makefile |    1 +
>  kernel/bpf/core.c   |  545 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  net/core/filter.c   |  520 ------------------------------------------------
>  4 files changed, 547 insertions(+), 520 deletions(-)
>  create mode 100644 kernel/bpf/Makefile
>  create mode 100644 kernel/bpf/core.c
>
> diff --git a/kernel/Makefile b/kernel/Makefile
> index f2a8b6246ce9..e7360b7c2c0e 100644
> --- a/kernel/Makefile
> +++ b/kernel/Makefile
> @@ -87,6 +87,7 @@ obj-$(CONFIG_RING_BUFFER) += trace/
>  obj-$(CONFIG_TRACEPOINTS) += trace/
>  obj-$(CONFIG_IRQ_WORK) += irq_work.o
>  obj-$(CONFIG_CPU_PM) += cpu_pm.o
> +obj-$(CONFIG_NET) += bpf/

But this still requires CONFIG_NET to use bpf.  Why not adding
CONFIG_BPF and making CONFIG_NET selects it?

Thanks,
Namhyung