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authorAlexei Starovoitov <ast@plumgrid.com>2014-10-24 05:41:08 +0400
committerDavid S. Miller <davem@davemloft.net>2014-10-28 02:09:59 +0300
commitf89b7755f517cdbb755d7543eef986ee9d54e654 (patch)
treebf491bea6418b0442900d864237e0028f7c35162 /kernel/bpf/Makefile
parent8ae3c911b9efcca653c552a9c74957a6cb04a87d (diff)
downloadlinux-f89b7755f517cdbb755d7543eef986ee9d54e654.tar.xz
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/Makefile6
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