From nobody Sun Feb 8 05:59:51 2026 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 547B3C7EE2D for ; Mon, 22 May 2023 20:41:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234762AbjEVUle (ORCPT ); Mon, 22 May 2023 16:41:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47948 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232172AbjEVUla (ORCPT ); Mon, 22 May 2023 16:41:30 -0400 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A1CE9B5 for ; Mon, 22 May 2023 13:41:28 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-561eadd916fso100222897b3.1 for ; Mon, 22 May 2023 13:41:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1684788088; x=1687380088; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=t771rJNSVAj7o7+OMhJ7kA2vXmw4aWdm5rm5xvuQqrM=; b=Pd8vKAkglEA/vs1vv4AHMGxBFRjMm2JVyfFC02xpYvgem5n4T96gLa7/AofEdDMVcK M16XMthYd2njQSr8xBBBaXAYSgMhNcn9AaTOJu7T5WV6NyRi9v1bIGiF+LuAaJikRUXn qqhuZzlUKQkDS6aPTv8UeR0ELjgWx9BV5y9gAC80RcJhR8L+tU7nhXtL9TL2XhBJeZTo nJ74+N/9bC9FZs3iEMAU0axokktTZmGVv9hOU5myYM4HnCPvrN5/WCHKbWIyBKa8pxdW 8plw+mUUO9L74VhZEFSVE5dskRfW46pkk+Y/+7CxhPI8sR/xB5cuOFXsy6n+qb9WOg6a MCfA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684788088; x=1687380088; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=t771rJNSVAj7o7+OMhJ7kA2vXmw4aWdm5rm5xvuQqrM=; b=MWz92i6+65ZdRawM8M6TuGKJHoJctdKdIVSubCPWB4yAvTVyxig4RydS8pIrUWFRSy OxJleBB9GjReNCqxbLifCAF9VbWtXh2RBRS6gozna2BQPmR6MH5V4zuca7pvI/hcSGKK 2behQbsFPHJ4dgp6mKq4FiUrFsaRjnjcaDMjqfRVObT1G6Fz0Reusi//qUCdrakJarrn 6Ixgq4iLsi3ovyOXYKusgqoGXKc7NesMDdz/mKuPL4C5KLORTaG8cwIgxOKzJMg/8OBi 7Wm2CnxLF0ozyr9ddruQ/awMbYnbFflEHS7OM6Kzyl3ArOUPYS1cXBtHoE84YNHkDXGL iVjA== X-Gm-Message-State: AC+VfDw+5jxp49JQtCZbj5+XNm5EcxiRSxxF8DD2SMuedRzMRDEQ+bas lymhShrwfiIG6hksHKXJA2yzApo5DcTu X-Google-Smtp-Source: ACHHUZ5snNbV50e86O5mFJKR8jdVm1YSHOzNE/IUHr35dMMsJ6rkgXM2DVpJSX+nXJWG9SI4uzb2BNk0kHSH X-Received: from irogers.svl.corp.google.com ([2620:15c:2d4:203:33a6:6e42:aa97:9ab4]) (user=irogers job=sendgmr) by 2002:a81:b717:0:b0:560:d237:43dc with SMTP id v23-20020a81b717000000b00560d23743dcmr7419490ywh.3.1684788087862; Mon, 22 May 2023 13:41:27 -0700 (PDT) Date: Mon, 22 May 2023 13:40:45 -0700 In-Reply-To: <20230522204047.800543-1-irogers@google.com> Message-Id: <20230522204047.800543-2-irogers@google.com> Mime-Version: 1.0 References: <20230522204047.800543-1-irogers@google.com> X-Mailer: git-send-email 2.40.1.698.g37aff9b760-goog Subject: [PATCH v1 1/3] perf build: Add ability to build with a generated vmlinux.h From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Ian Rogers , Adrian Hunter , James Clark , Tiezhu Yang , Yang Jihong , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Commit a887466562b4 ("perf bpf skels: Stop using vmlinux.h generated from BTF, use subset of used structs + CO-RE") made it so that vmlinux.h was uncondtionally included from tools/perf/util/vmlinux.h. This change reverts part of that change (so that vmlinux.h is once again generated) and makes it so that the vmlinux.h used at build time is selected from the VMLINUX_H variable. By default the VMLINUX_H variable is set to the vmlinux.h added in change a887466562b4, but if GEN_VMLINUX_H=3D1 is passed on the build command line then the previous generation behavior kicks in. The build with GEN_VMLINUX_H=3D1 currently fails with: ``` util/bpf_skel/lock_contention.bpf.c:419:8: error: redefinition of 'rq' struct rq {}; ^ /tmp/perf/util/bpf_skel/.tmp/../vmlinux.h:45630:8: note: previous definitio= n is here struct rq { ^ 1 error generated. ``` Signed-off-by: Ian Rogers Acked-by: Andrii Nakryiko --- tools/perf/Makefile.config | 4 ++++ tools/perf/Makefile.perf | 16 +++++++++++++++- tools/perf/util/bpf_skel/.gitignore | 1 + tools/perf/util/bpf_skel/{ =3D> vmlinux}/vmlinux.h | 0 4 files changed, 20 insertions(+), 1 deletion(-) rename tools/perf/util/bpf_skel/{ =3D> vmlinux}/vmlinux.h (100%) diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 70268442f7ee..636ab725ae70 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -680,6 +680,10 @@ ifdef BUILD_BPF_SKEL CFLAGS +=3D -DHAVE_BPF_SKEL endif =20 +ifndef GEN_VMLINUX_H + VMLINUX_H=3D$(src-perf)/util/bpf_skel/vmlinux/vmlinux.h +endif + dwarf-post-unwind :=3D 1 dwarf-post-unwind-text :=3D BUG =20 diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 1593c5dcaa9e..968b95070798 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -1081,7 +1081,21 @@ $(BPFTOOL): | $(SKEL_TMP_OUT) $(Q)CFLAGS=3D $(MAKE) -C ../bpf/bpftool \ OUTPUT=3D$(SKEL_TMP_OUT)/ bootstrap =20 -$(SKEL_TMP_OUT)/%.bpf.o: util/bpf_skel/%.bpf.c $(LIBBPF) | $(SKEL_TMP_OUT) +VMLINUX_BTF_PATHS ?=3D $(if $(O),$(O)/vmlinux) \ + $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ + ../../vmlinux \ + /sys/kernel/btf/vmlinux \ + /boot/vmlinux-$(shell uname -r) +VMLINUX_BTF ?=3D $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) + +$(SKEL_OUT)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) +ifeq ($(VMLINUX_H),) + $(QUIET_GEN)$(BPFTOOL) btf dump file $< format c > $@ +else + $(Q)cp "$(VMLINUX_H)" $@ +endif + +$(SKEL_TMP_OUT)/%.bpf.o: util/bpf_skel/%.bpf.c $(LIBBPF) $(SKEL_OUT)/vmlin= ux.h | $(SKEL_TMP_OUT) $(QUIET_CLANG)$(CLANG) -g -O2 -target bpf -Wall -Werror $(BPF_INCLUDE) $(= TOOLS_UAPI_INCLUDE) \ -c $(filter util/bpf_skel/%.bpf.c,$^) -o $@ && $(LLVM_STRIP) -g $@ =20 diff --git a/tools/perf/util/bpf_skel/.gitignore b/tools/perf/util/bpf_skel= /.gitignore index 7a1c832825de..cd01455e1b53 100644 --- a/tools/perf/util/bpf_skel/.gitignore +++ b/tools/perf/util/bpf_skel/.gitignore @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only .tmp *.skel.h +vmlinux.h diff --git a/tools/perf/util/bpf_skel/vmlinux.h b/tools/perf/util/bpf_skel/= vmlinux/vmlinux.h similarity index 100% rename from tools/perf/util/bpf_skel/vmlinux.h rename to tools/perf/util/bpf_skel/vmlinux/vmlinux.h --=20 2.40.1.698.g37aff9b760-goog From nobody Sun Feb 8 05:59:51 2026 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 37BE0C77B75 for ; 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Mon, 22 May 2023 13:41:30 -0700 (PDT) Date: Mon, 22 May 2023 13:40:46 -0700 In-Reply-To: <20230522204047.800543-1-irogers@google.com> Message-Id: <20230522204047.800543-3-irogers@google.com> Mime-Version: 1.0 References: <20230522204047.800543-1-irogers@google.com> X-Mailer: git-send-email 2.40.1.698.g37aff9b760-goog Subject: [PATCH v1 2/3] perf bpf: Move the declaration of struct rq From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Ian Rogers , Adrian Hunter , James Clark , Tiezhu Yang , Yang Jihong , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" struct rq is defined in vmlinux.h when the vmlinux.h is generated, this causes a redefinition failure if it is declared in lock_contention.bpf.c. Move the definition to vmlinux.h for consistency with the generated version. Fixes: 760ebc45746b ("perf lock contention: Add empty 'struct rq' to satisf= y libbpf 'runqueue' type verification") Signed-off-by: Ian Rogers Acked-by: Andrii Nakryiko --- tools/perf/util/bpf_skel/lock_contention.bpf.c | 2 -- tools/perf/util/bpf_skel/vmlinux/vmlinux.h | 10 ++++++++++ 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/bpf_skel/lock_contention.bpf.c b/tools/perf/ut= il/bpf_skel/lock_contention.bpf.c index 1d48226ae75d..8d3cfbb3cc65 100644 --- a/tools/perf/util/bpf_skel/lock_contention.bpf.c +++ b/tools/perf/util/bpf_skel/lock_contention.bpf.c @@ -416,8 +416,6 @@ int contention_end(u64 *ctx) return 0; } =20 -struct rq {}; - extern struct rq runqueues __ksym; =20 struct rq___old { diff --git a/tools/perf/util/bpf_skel/vmlinux/vmlinux.h b/tools/perf/util/b= pf_skel/vmlinux/vmlinux.h index c7ed51b0c1ef..ab84a6e1da5e 100644 --- a/tools/perf/util/bpf_skel/vmlinux/vmlinux.h +++ b/tools/perf/util/bpf_skel/vmlinux/vmlinux.h @@ -171,4 +171,14 @@ struct bpf_perf_event_data_kern { struct perf_sample_data *data; struct perf_event *event; } __attribute__((preserve_access_index)); + +/* + * If 'struct rq' isn't defined for lock_contention.bpf.c, for the sake of + * rq___old and rq___new, then the type for the 'runqueue' variable ends up + * being a forward declaration (BTF_KIND_FWD) while the kernel has it defi= ned + * (BTF_KIND_STRUCT). The definition appears in vmlinux.h rather than + * lock_contention.bpf.c for consistency with a generated vmlinux.h. + */ +struct rq {}; + #endif // __VMLINUX_H --=20 2.40.1.698.g37aff9b760-goog From nobody Sun Feb 8 05:59:51 2026 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 9F4ADC77B75 for ; Mon, 22 May 2023 20:41:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235072AbjEVUlk (ORCPT ); Mon, 22 May 2023 16:41:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234774AbjEVUlf (ORCPT ); Mon, 22 May 2023 16:41:35 -0400 Received: from mail-yw1-x114a.google.com (mail-yw1-x114a.google.com [IPv6:2607:f8b0:4864:20::114a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B7D10B9 for ; Mon, 22 May 2023 13:41:33 -0700 (PDT) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-564f6099813so28504147b3.2 for ; Mon, 22 May 2023 13:41:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1684788092; x=1687380092; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=EDof+QoJIpcW+bcC8mIq1dIhSy6Tx4m7myi7gPf3qCM=; b=hL4XZqmAmsZBqISb5cs2SY76dW2m/n3/dRqTTMYPVdlAsjXvYxhCKl/wYIuYN5dH1y M/Zgkcj29Ps7yZkdxvqlqLB071q0vvvwDPGSr8posF4+n+m/gUhclexIkD3Olk2KeqQV pTVYcM1HHnrL4uS435VahAb4o4/PTyTyKImzzctxQZvjJGnw4XTMrdTRjjKdnyjt0ZLi TIAogLgYmgvk031sY5cMg+7HCGNuWb8K3lzAN+pNqd33I//tCNpkQTjvyPsw67LorTaF hdFLUxCf9oAxG+uLPCDIzzVkbJwxtYLshP/HM2YZJzL+KgSUM1yh/o0jmt3XpS5ll4w6 ztZg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684788092; x=1687380092; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=EDof+QoJIpcW+bcC8mIq1dIhSy6Tx4m7myi7gPf3qCM=; b=QH5InQzPF+XQ2D0k8YeiqtJvoV9crjkBngTkzQqvMLghZmcD+GG5l1XBgERUJ4FJv9 sSdtFa4nCVo70aStzkJkGdcwPXOMBAGllccocvrQsPDOKqbN+Lrg8jWRl5i+MLjemCwu qGPITIaybATvrO2OPAy4D5HDQaR3Lwxfnn6UVQtypuaQVa+btGlLgpzPuV2VWIdsJMtA BVZAlsg/mOYDY3FgmPrI6rxnFaQhco2f0rWE3SAP6lki9Cpjg3nRVH/jk+w4rFeE6WTE +vE+Dbi6928Zj78WKnNxzK4vvbuU544pTETy/3TyFxJUQEPicOxzBPpWM5Q5T9ebR+Uu UPlQ== X-Gm-Message-State: AC+VfDxOZ3uPfX3PgIxYAxgaWbjvj35Djpdy6cJhuU1ttzcohqPN2WFi HRJjqQmqlJ3c4qSAYWLDKb12k5TfMiOC X-Google-Smtp-Source: ACHHUZ6Ij6MmJUxaDx9xqk58WsfpUW60Sf6BCP5q+Vjx4RkK5eARDpLpq/+ExNmPLc2gquPDbKFREdVnHLrA X-Received: from irogers.svl.corp.google.com ([2620:15c:2d4:203:33a6:6e42:aa97:9ab4]) (user=irogers job=sendgmr) by 2002:a81:ad09:0:b0:559:e97a:cb21 with SMTP id l9-20020a81ad09000000b00559e97acb21mr7115495ywh.9.1684788092608; Mon, 22 May 2023 13:41:32 -0700 (PDT) Date: Mon, 22 May 2023 13:40:47 -0700 In-Reply-To: <20230522204047.800543-1-irogers@google.com> Message-Id: <20230522204047.800543-4-irogers@google.com> Mime-Version: 1.0 References: <20230522204047.800543-1-irogers@google.com> X-Mailer: git-send-email 2.40.1.698.g37aff9b760-goog Subject: [PATCH v1 3/3] perf test: Add build tests for BUILD_BPF_SKEL From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Ian Rogers , Adrian Hunter , James Clark , Tiezhu Yang , Yang Jihong , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add tests with and without generating vmlinux.h. Signed-off-by: Ian Rogers Acked-by: Andrii Nakryiko --- tools/perf/tests/make | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/perf/tests/make b/tools/perf/tests/make index 8dd3f8090352..775f374d9345 100644 --- a/tools/perf/tests/make +++ b/tools/perf/tests/make @@ -69,6 +69,8 @@ make_clean_all :=3D clean all make_python_perf_so :=3D $(python_perf_so) make_debug :=3D DEBUG=3D1 make_nondistro :=3D BUILD_NONDISTRO=3D1 +make_bpf_skel :=3D BUILD_BPF_SKEL=3D1 +make_gen_vmlinux_h :=3D BUILD_BPF_SKEL=3D1 GEN_VMLINUX_H=3D1 make_no_libperl :=3D NO_LIBPERL=3D1 make_no_libpython :=3D NO_LIBPYTHON=3D1 make_no_scripts :=3D NO_LIBPYTHON=3D1 NO_LIBPERL=3D1 @@ -136,6 +138,8 @@ endif run +=3D make_python_perf_so run +=3D make_debug run +=3D make_nondistro +run +=3D make_build_bpf_skel +run +=3D make_gen_vmlinux_h run +=3D make_no_libperl run +=3D make_no_libpython run +=3D make_no_scripts --=20 2.40.1.698.g37aff9b760-goog