Re: [PATCH net] bpf: split eBPF out of NET

[Alexei Starovoitov]

On Mon, Oct 27, 2014 at 4:10 PM, David Miller <davem@xxxxxxxxxxxxx> wrote:
> From: Alexei Starovoitov <ast@xxxxxxxxxxxx>
> Date: Thu, 23 Oct 2014 18:41:08 -0700
>
>> introduce two configs:
>> - hidden CONFIG_BPF to select eBPF interpreter that classic socket filters
>>   depend on
>> - visible CONFIG_BPF_SYSCALL (default off) that tracing and sockets can use
>>
>> that solves several problems:
>> - tracing and others that wish to use eBPF don't need to depend on NET.
>>   They can use BPF_SYSCALL to allow loading from userspace or select BPF
>>   to use it directly from kernel in NET-less configs.
>> - in 3.18 programs cannot be attached to events yet, so don't force it on
>> - when the rest of eBPF infra is there in 3.19+, it's still useful to
>>   switch it off to minimize kernel size
>>
>> Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxxxx>
>> ---
>>
>> bloat-o-meter on x64 shows:
>> add/remove: 0/60 grow/shrink: 0/2 up/down: 0/-15601 (-15601)
>>
>> tested with many different config combinations. Hopefully didn't miss anything.
>
> Applied with two changes:
>
> 1) boolean --> bool
> 2) Moved bloat-o-meter and testing information into commit message.
>
> Thanks.

Thank you for taking care of it!
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