diff options
| author | Alexei Starovoitov <ast@plumgrid.com> | 2014-10-23 18:41:08 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-10-27 19:09:59 -0400 |
| commit | f89b7755f517cdbb755d7543eef986ee9d54e654 (patch) | |
| tree | bf491bea6418b0442900d864237e0028f7c35162 /kernel/bpf/Makefile | |
| parent | 8ae3c911b9efcca653c552a9c74957a6cb04a87d (diff) | |
| download | linux-f89b7755f517cdbb755d7543eef986ee9d54e654.tar.bz2 | |
bpf: split eBPF out of NET
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
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.
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/Makefile')
| -rw-r--r-- | kernel/bpf/Makefile | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/bpf/Makefile b/kernel/bpf/Makefile index 45427239f375..0daf7f6ae7df 100644 --- a/kernel/bpf/Makefile +++ b/kernel/bpf/Makefile @@ -1,5 +1,5 @@ -obj-y := core.o syscall.o verifier.o - +obj-y := core.o +obj-$(CONFIG_BPF_SYSCALL) += syscall.o verifier.o ifdef CONFIG_TEST_BPF -obj-y += test_stub.o +obj-$(CONFIG_BPF_SYSCALL) += test_stub.o endif |