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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 463B0C433FE for ; Sun, 3 Oct 2021 19:22:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 251FE6120F for ; Sun, 3 Oct 2021 19:22:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231631AbhJCTYT (ORCPT ); Sun, 3 Oct 2021 15:24:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47314 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231591AbhJCTYM (ORCPT ); Sun, 3 Oct 2021 15:24:12 -0400 Received: from mail-wm1-x32e.google.com (mail-wm1-x32e.google.com [IPv6:2a00:1450:4864:20::32e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1CFB2C061786 for ; Sun, 3 Oct 2021 12:22:24 -0700 (PDT) Received: by mail-wm1-x32e.google.com with SMTP id k21-20020a05600c0b5500b0030d6ac87a80so735857wmr.0 for ; Sun, 03 Oct 2021 12:22:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isovalent-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=XgUYWJZuL/HwVLt6ttv8qOWLvVmOfG/Qt/Uz50IHV30=; b=OBnuWV6Bpvbn29ACjdTx7kRLWzSefsJ+OmeF8IcplYnercHWTzkrDGxPez7fXJxpDm WuIX7UFo7z/gRpdkt6InD/HL17wrnkndmoocWIjCWc1iuTdTettzBLaPUo2Du8LxLRrW eT1XZPJoYJK4COzSRrXkC4twKNJWwwnBCYEYIXTiRapeCMGlVs241bjk/Bqw83flvb+i QuHNMIfuyXvG+8AE9U8+PYbBFKQsIxLECr2aEcyCd1Xc0fn6XU4rP8hYXWQ5FVRILfqB qWDpJslMNZdNjH5jF4gqXPrHaz4yBizP+g7OuL7ZWe0PvJaMpo+3fxmmFjDQhqaeiikw WIQQ== 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=XgUYWJZuL/HwVLt6ttv8qOWLvVmOfG/Qt/Uz50IHV30=; b=gxErZ73otgyq1lNfME674dBRDKO+dOzs4dEB3DVvmWsG4hOSV/2jUyHOvRkA88sqOw 5jR76CG6UnLFcTTwo1vWbJyu4ZGI7Sva2tKYpcG1t/YSupysHp21BabiIjWl5mDR2Sfx IGLxxB7+lGpMtJZp7z//aquDHs+K+AjC/lA7KhlrXsYDjgSDC+16m8z9hhtVLt/g8HTt UPRu0n6wow5vEkIE04mOJX+m77xim8oMjD+t3v6gcro/Kskb7+Y3Mb2hTcm/2JVszEhk UAF3QUyowIjaDDvzzJ57pntoZJtQoo8ioYLSpVL46kJtXu8W9SsWJCgtr3oB6J/H32NC d2Lw== X-Gm-Message-State: AOAM531GSpf9KyexRzhgo/FVuLmp6QrwijHfKBMBmg98yAjVBwFNwNll 8BCTNyhcdFGWXinbW2kMZb68toprE6eeNHq+ X-Google-Smtp-Source: ABdhPJz4YtIVsH13i44+O1OyJSIZRf2C2PE1ZjEvQqN+iHRhouHY6B44Glk+Hx2BYFdNJRvFVGHLHw== X-Received: by 2002:a1c:1fd5:: with SMTP id f204mr4686629wmf.73.1633288942712; Sun, 03 Oct 2021 12:22:22 -0700 (PDT) Received: from localhost.localdomain ([149.86.88.77]) by smtp.gmail.com with ESMTPSA id d3sm14124642wrb.36.2021.10.03.12.22.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 Oct 2021 12:22:22 -0700 (PDT) From: Quentin Monnet To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko Cc: netdev@vger.kernel.org, bpf@vger.kernel.org, Quentin Monnet Subject: [PATCH bpf-next v3 04/10] tools: runqslower: install libbpf headers when building Date: Sun, 3 Oct 2021 20:22:02 +0100 Message-Id: <20211003192208.6297-5-quentin@isovalent.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211003192208.6297-1-quentin@isovalent.com> References: <20211003192208.6297-1-quentin@isovalent.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org API headers from libbpf should not be accessed directly from the library's source directory. Instead, they should be exported with "make install_headers". Let's make sure that runqslower installs the headers properly when building. We use a libbpf_hdrs target to mark the logical dependency on libbpf's headers export for a number of object files, even though the headers should have been exported at this time (since bpftool needs them, and is required to generate the skeleton or the vmlinux.h). When descending from a parent Makefile, the specific output directories for building the library and exporting the headers are configurable with BPFOBJ_OUTPUT and BPF_DESTDIR, respectively. This is in addition to OUTPUT, on top of which those variables are constructed by default. Also adjust the Makefile for the BPF selftests. We pass a number of variables to the "make" invocation, because we want to point runqslower to the (target) libbpf shared with other tools, instead of building its own version. In addition, runqslower relies on (target) bpftool, and we also want to pass the proper variables to its Makefile so that bpftool itself reuses the same libbpf. Signed-off-by: Quentin Monnet --- tools/bpf/runqslower/Makefile | 22 +++++++++++++--------- tools/testing/selftests/bpf/Makefile | 15 +++++++++------ 2 files changed, 22 insertions(+), 15 deletions(-) diff --git a/tools/bpf/runqslower/Makefile b/tools/bpf/runqslower/Makefile index 3818ec511fd2..049aef7e9a4c 100644 --- a/tools/bpf/runqslower/Makefile +++ b/tools/bpf/runqslower/Makefile @@ -9,9 +9,9 @@ BPFTOOL ?= $(DEFAULT_BPFTOOL) LIBBPF_SRC := $(abspath ../../lib/bpf) BPFOBJ_OUTPUT := $(OUTPUT)libbpf/ BPFOBJ := $(BPFOBJ_OUTPUT)libbpf.a -BPF_INCLUDE := $(BPFOBJ_OUTPUT) -INCLUDES := -I$(OUTPUT) -I$(BPF_INCLUDE) -I$(abspath ../../lib) \ - -I$(abspath ../../include/uapi) +BPF_DESTDIR := $(BPFOBJ_OUTPUT) +BPF_INCLUDE := $(BPF_DESTDIR)/include +INCLUDES := -I$(OUTPUT) -I$(BPF_INCLUDE) -I$(abspath ../../include/uapi) CFLAGS := -g -Wall # Try to detect best kernel BTF source @@ -33,7 +33,7 @@ endif .DELETE_ON_ERROR: -.PHONY: all clean runqslower +.PHONY: all clean runqslower libbpf_hdrs all: runqslower runqslower: $(OUTPUT)/runqslower @@ -46,13 +46,15 @@ clean: $(Q)$(RM) $(OUTPUT)runqslower $(Q)$(RM) -r .output +libbpf_hdrs: $(BPFOBJ) + $(OUTPUT)/runqslower: $(OUTPUT)/runqslower.o $(BPFOBJ) $(QUIET_LINK)$(CC) $(CFLAGS) $^ -lelf -lz -o $@ $(OUTPUT)/runqslower.o: runqslower.h $(OUTPUT)/runqslower.skel.h \ - $(OUTPUT)/runqslower.bpf.o + $(OUTPUT)/runqslower.bpf.o libbpf_hdrs -$(OUTPUT)/runqslower.bpf.o: $(OUTPUT)/vmlinux.h runqslower.h +$(OUTPUT)/runqslower.bpf.o: $(OUTPUT)/vmlinux.h runqslower.h libbpf_hdrs $(OUTPUT)/%.skel.h: $(OUTPUT)/%.bpf.o | $(BPFTOOL) $(QUIET_GEN)$(BPFTOOL) gen skeleton $< > $@ @@ -81,8 +83,10 @@ else endif $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(BPFOBJ_OUTPUT) - $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(BPFOBJ_OUTPUT) $@ + $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(BPFOBJ_OUTPUT) \ + DESTDIR=$(BPFOBJ_OUTPUT) prefix= $(abspath $@) install_headers -$(DEFAULT_BPFTOOL): | $(BPFTOOL_OUTPUT) +$(DEFAULT_BPFTOOL): $(BPFOBJ) | $(BPFTOOL_OUTPUT) $(Q)$(MAKE) $(submake_extras) -C ../bpftool OUTPUT=$(BPFTOOL_OUTPUT) \ - CC=$(HOSTCC) LD=$(HOSTLD) + LIBBPF_OUTPUT=$(BPFOBJ_OUTPUT) \ + LIBBPF_DESTDIR=$(BPF_DESTDIR) CC=$(HOSTCC) LD=$(HOSTLD) diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 9c6045261806..ffe48b40d8fa 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -130,6 +130,7 @@ HOST_INCLUDE_DIR := $(INCLUDE_DIR) endif HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids +RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/ VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ @@ -154,7 +155,7 @@ $(notdir $(TEST_GEN_PROGS) \ # sort removes libbpf duplicates when not cross-building MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \ $(HOST_BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/resolve_btfids \ - $(INCLUDE_DIR)) + $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR)) $(MAKE_DIRS): $(call msg,MKDIR,,$@) $(Q)mkdir -p $@ @@ -183,11 +184,13 @@ $(OUTPUT)/test_stub.o: test_stub.c $(BPFOBJ) DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool -$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) - $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ - OUTPUT=$(SCRATCH_DIR)/ VMLINUX_BTF=$(VMLINUX_BTF) \ - BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) && \ - cp $(SCRATCH_DIR)/runqslower $@ +$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT) + $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ + OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \ + BPFTOOL_OUTPUT=$(BUILD_DIR)/bpftool/ \ + BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \ + BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) && \ + cp $(RUNQSLOWER_OUTPUT)runqslower $@ TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL) -- 2.30.2