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| author | Alexei Starovoitov <ast@kernel.org> | 2022-01-31 23:05:28 +0100 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2022-02-01 23:56:18 +0100 |
| commit | e96f2d64c812d9c20adea38a9b5e08feaa21fcf5 (patch) | |
| tree | 657d2a74dcc4f13b7bdab3e6035a3c3533ba5f79 /kernel/bpf/preload | |
| parent | bpf: Open code obj_get_info_by_fd in bpf preload. (diff) | |
| download | linux-e96f2d64c812d9c20adea38a9b5e08feaa21fcf5.tar.xz linux-e96f2d64c812d9c20adea38a9b5e08feaa21fcf5.zip | |
bpf: Drop libbpf, libelf, libz dependency from bpf preload.
Drop libbpf, libelf, libz dependency from bpf preload.
This reduces bpf_preload_umd binary size
from 1.7M to 30k unstripped with debug info
and from 300k to 19k stripped.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20220131220528.98088-8-alexei.starovoitov@gmail.com
Diffstat (limited to 'kernel/bpf/preload')
| -rw-r--r-- | kernel/bpf/preload/Makefile | 28 |
1 files changed, 2 insertions, 26 deletions
diff --git a/kernel/bpf/preload/Makefile b/kernel/bpf/preload/Makefile index 1400ac58178e..baf47d9c7557 100644 --- a/kernel/bpf/preload/Makefile +++ b/kernel/bpf/preload/Makefile @@ -1,40 +1,16 @@ # SPDX-License-Identifier: GPL-2.0 LIBBPF_SRCS = $(srctree)/tools/lib/bpf/ -LIBBPF_OUT = $(abspath $(obj))/libbpf -LIBBPF_A = $(LIBBPF_OUT)/libbpf.a -LIBBPF_DESTDIR = $(LIBBPF_OUT) -LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include - -# Although not in use by libbpf's Makefile, set $(O) so that the "dummy" test -# in tools/scripts/Makefile.include always succeeds when building the kernel -# with $(O) pointing to a relative path, as in "make O=build bindeb-pkg". -$(LIBBPF_A): | $(LIBBPF_OUT) - $(Q)$(MAKE) -C $(LIBBPF_SRCS) O=$(LIBBPF_OUT)/ OUTPUT=$(LIBBPF_OUT)/ \ - DESTDIR=$(LIBBPF_DESTDIR) prefix= \ - $(LIBBPF_OUT)/libbpf.a install_headers - -libbpf_hdrs: $(LIBBPF_A) - -.PHONY: libbpf_hdrs - -$(LIBBPF_OUT): - $(call msg,MKDIR,$@) - $(Q)mkdir -p $@ +LIBBPF_INCLUDE = $(LIBBPF_SRCS)/.. userccflags += -I $(srctree)/tools/include/ -I $(srctree)/tools/include/uapi \ -I $(LIBBPF_INCLUDE) -Wno-unused-result userprogs := bpf_preload_umd -clean-files := libbpf/ - -$(obj)/iterators/iterators.o: | libbpf_hdrs - bpf_preload_umd-objs := iterators/iterators.o -bpf_preload_umd-userldlibs := $(LIBBPF_A) -lelf -lz -$(obj)/bpf_preload_umd: $(LIBBPF_A) +$(obj)/bpf_preload_umd: $(obj)/bpf_preload_umd_blob.o: $(obj)/bpf_preload_umd |