From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C994BC433EF for ; Mon, 31 Jan 2022 22:05:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231145AbiAaWFx (ORCPT ); Mon, 31 Jan 2022 17:05:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57838 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231216AbiAaWFw (ORCPT ); Mon, 31 Jan 2022 17:05:52 -0500 Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B057FC061714 for ; Mon, 31 Jan 2022 14:05:51 -0800 (PST) Received: by mail-pj1-x1034.google.com with SMTP id z10-20020a17090acb0a00b001b520826011so533869pjt.5 for ; Mon, 31 Jan 2022 14:05:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=5zKq2PZXAx/qg7Z0UrTBdBykuUzrcXoLH7EvUQPd0q4=; b=WAdUrb5kajkRD/FfFQu187MCQ2LcQ/rCY95OSy9hSG3RTi/YedQKZhmJjxGXx3WqlS SiwOS9o3haUcbQcAWQkXfsmI/4F0afp4gONFBmKpEOk8xEvUa5Fiuf3SZrc1wnEE33nt 4LaM/MeLwNa8t3X/mWBfMil7M75VnzgCujrThLuHmV2PW1Yjn5g3epSZQvakMbIx/JyH nhPjL8+hyEFj654W7Zc+SaOQqeeBtHwDqgPmZHLDo4QFoac1sc/kEKXGulxqOiZaVoWn PGgtByD2rnXe5dZ7wDDTkL80qSlzGchOOgetWqsH0ForqszQv+0TfsGPpHdGNWFRg1zV bj3A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=5zKq2PZXAx/qg7Z0UrTBdBykuUzrcXoLH7EvUQPd0q4=; b=Szl1KU4yxJk7FNQQHWm19Q5qAPfI8tLT4ccfZIdrw1md9/ghvioJTYszHl4GPFNR1b NfxfCRIp9npQT8RqL1cbPgEhEBylyPx2Vybsy35LLLLiaEdMf3nPFE3YizswA4YeJOJ7 du6e6A0KhaoofukyWzm+XH+6xPWaTLMsUZy9rPfJmMYEufaQpO+g+brG0ZsGWiC5zdNt cTvJ/EfPFdOrdfGT4O4T1QyHMa8E4WC1MRnPXrkemN/OYklSuLx7Ywwg5UzTy0A3t/Qr nm1h+OcR8A0Mit8GrjHdSwrQTacpFIGq/P2rOhkezubkHfeWIIMmji6XRrrDqxcvOU/Z RanQ== X-Gm-Message-State: AOAM5322W65d1eBgS9kO6vfPlFslG1MGzVQWmCY+m+yh0o+VDoIIhFco qOjpTHoiwJu2aqkB+c+5s8E= X-Google-Smtp-Source: ABdhPJw5kyz4Xypm311qWv54hatBOva2hEl9FkZagPI2LxiOeRBD4mNJbaC4MhDEowSW6Z1+eAZM/w== X-Received: by 2002:a17:90b:350c:: with SMTP id ls12mr26624379pjb.44.1643666751208; Mon, 31 Jan 2022 14:05:51 -0800 (PST) Received: from ast-mbp.thefacebook.com ([2620:10d:c090:400::5:78b6]) by smtp.gmail.com with ESMTPSA id n2sm7728142pgf.74.2022.01.31.14.05.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 31 Jan 2022 14:05:50 -0800 (PST) From: Alexei Starovoitov To: davem@davemloft.net Cc: daniel@iogearbox.net, andrii@kernel.org, bpf@vger.kernel.org, kernel-team@fb.com Subject: [PATCH bpf-next 7/7] bpf: Drop libbpf, libelf, libz dependency from bpf preload. Date: Mon, 31 Jan 2022 14:05:28 -0800 Message-Id: <20220131220528.98088-8-alexei.starovoitov@gmail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220131220528.98088-1-alexei.starovoitov@gmail.com> References: <20220131220528.98088-1-alexei.starovoitov@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org From: Alexei Starovoitov 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 --- kernel/bpf/preload/Makefile | 28 ++-------------------------- 1 file 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 -- 2.30.2