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[23.128.96.34]) by mx.google.com with ESMTPS id x7-20020a654147000000b00573fa4cfe4asi10256786pgp.39.2023.09.19.15.42.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Sep 2023 15:42:51 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.34 as permitted sender) client-ip=23.128.96.34; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20230601 header.b=mfF9NQiH; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.34 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by howler.vger.email (Postfix) with ESMTP id 4B0FF8097799; Tue, 19 Sep 2023 08:40:44 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at howler.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233179AbjISPkn (ORCPT + 99 others); Tue, 19 Sep 2023 11:40:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54082 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233134AbjISPkm (ORCPT ); Tue, 19 Sep 2023 11:40:42 -0400 Received: from mail-qt1-x830.google.com (mail-qt1-x830.google.com [IPv6:2607:f8b0:4864:20::830]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B4340BE for ; Tue, 19 Sep 2023 08:40:31 -0700 (PDT) Received: by mail-qt1-x830.google.com with SMTP id d75a77b69052e-414ba610766so500101cf.0 for ; Tue, 19 Sep 2023 08:40:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1695138031; x=1695742831; darn=vger.kernel.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=J+L4RfMUcaS7n7sCkiVvlHSrXVQoPmLz/+RreqVEVZU=; b=mfF9NQiHUVePrxzH5OPW4jxExezmZXP49wBubdHwcGHoHMIe1YYfIyh7WpCvI5to2r 1PuKHenaiHtsjrN5pOY93EIJTUTahybo1jK2/16VrBvmBTqMZ9JaTgli1fZA2S5vg6SW vl7/kjB/m6fClSbnXXLgn3D0lI1uiqyPRkdbnvtLkOD8/tyJybsOjLrMF3BgsSt3Iqts zYJWVQr+goj7KCJrSbReH6dbXD5rATKBkibOFPa+vTTudYvWr2ZNQKbjSESQHRbONg2b Tj8/2HztiZ7dEMiY88YHqCPbzHSuFqSCeFBvNg/Gremkju5ni/oI2FfHkUJJKw+/nDDg WhbQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695138031; x=1695742831; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=J+L4RfMUcaS7n7sCkiVvlHSrXVQoPmLz/+RreqVEVZU=; b=jd1927AN4HMqYz1VJO9cuvqsrf2FYj2HBn72b1KbjJRnOipxh4uoZUIA/x0R6v2iaD KmIhD9DzrDtc8u08aa0pFFwIGsz/nVbMhZ2BS4fbOh2x/YMPd1xWQL0IkNwYl0SFQFmi 2gNVBbwH0jKD3+oDqfWfYhD4cPsd+VciLD85bLFZMQu38BBYUptYP5p/pVV7M1P9nDcz U6Szyi5XFkrOmFnnFjjqE9MDdBwLA2x6v14Mg9Tq1YW2V1+kLcYIgQ2m7dmpz+oT6KLJ Ol8kbt8/lbJlZGwpxqLPwE4+Iabq+pSOlh0Cg2NptXgn6QgBrI2Rlj4fv1EMCFCyiQvP x5Jw== X-Gm-Message-State: AOJu0YwG4YOg1oZonLNwzbC4XhrsSHVVB+/DkejqOem3rW+fwygylWIV hq4y7/rRzjkEc5m0CFkCqyQaT5ayxSDnWNMbxz7QvQ== X-Received: by 2002:a05:622a:4016:b0:410:a4cb:9045 with SMTP id cf22-20020a05622a401600b00410a4cb9045mr303433qtb.18.1695138030517; Tue, 19 Sep 2023 08:40:30 -0700 (PDT) MIME-Version: 1.0 References: <20230914211948.814999-1-irogers@google.com> In-Reply-To: From: Ian Rogers Date: Tue, 19 Sep 2023 08:40:16 -0700 Message-ID: Subject: Re: [PATCH v1 0/5] Enable BPF skeletons by default To: Arnaldo Carvalho de Melo Cc: Namhyung Kim , Peter Zijlstra , Ingo Molnar , Mark Rutland , Alexander Shishkin , Jiri Olsa , Adrian Hunter , Nick Terrell , Nathan Chancellor , Nick Desaulniers , Tom Rix , Andrii Nakryiko , Tiezhu Yang , James Clark , Kajol Jain , Patrice Duroux , Athira Rajeev , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, llvm@lists.linux.dev Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-17.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS, USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (howler.vger.email [0.0.0.0]); Tue, 19 Sep 2023 08:40:45 -0700 (PDT) On Tue, Sep 19, 2023 at 6:16=E2=80=AFAM Arnaldo Carvalho de Melo wrote: > > Em Mon, Sep 18, 2023 at 04:40:15PM -0700, Namhyung Kim escreveu: > > On Thu, Sep 14, 2023 at 2:20=E2=80=AFPM Ian Rogers = wrote: > > > > > > Enable BPF skeletons by default but warn don't fail if they can't be > > > supported. This was the intended behavior for Linux 6.4 but it caused > > > an issue captured in this thread: > > > https://lore.kernel.org/lkml/20230503211801.897735-1-acme@kernel.org/ > > > > > > This issue isn't repeated here as the previous issue related to > > > generating vmlinux.h, which is no longer performed by default as a > > > checked-in vmlinux.h is used instead. > > > > > > Unlike with those changes, the BUILD_BPF_SKEL is kept and setting it > > > to 0 disables BPF skeletons. Also, rather than fail the build due to = a > > > missed dependency, dependencies are checked and BPF skeletons disable= d > > > if they aren't present. > > > > > > Some related commits: > > > b7a2d774c9c5 perf build: Add ability to build with a generated vmlinu= x.h > > > a887466562b4 perf bpf skels: Stop using vmlinux.h generated from BTF,= use subset of used structs + CO-RE > > > a2af0f6b8ef7 perf build: Add system include paths to BPF builds > > > 5be6cecda080 perf bpf skels: Make vmlinux.h use bpf.h and perf_event.= h in source directory > > > 9a2d5178b9d5 Revert "perf build: Make BUILD_BPF_SKEL default, rename = to NO_BPF_SKEL" > > > a887466562b4 perf bpf skels: Stop using vmlinux.h generated from BTF,= use subset of used structs + CO-RE > > > 1d7966547e11 perf build: Add warning for when vmlinux.h generation fa= ils > > > a980755beb5a perf build: Make BUILD_BPF_SKEL default, rename to NO_BP= F_SKEL > > > > > > Ian Rogers (5): > > > perf version: Add status of bpf skeletons > > > perf build: Default BUILD_BPF_SKEL, warn/disable for missing deps > > > perf test: Update build test for changed BPF skeleton defaults > > > perf test: Ensure EXTRA_TESTS is covered in build test > > > perf test: Detect off-cpu support from build options > > > > Tested-by: Namhyung Kim > > Is this verbose by default now? Maybe its something on my side, but I > noticed a higher level of verbosity, can you check? I don't see more verbosity. Logs below. Thanks, Ian $ git fetch --all $ git checkout -b ptn-clean ptn/perf-tools-next $ b4 am 20230914211948.814999-1-irogers@google.com $ git am ./20230914_irogers_enable_bpf_skeletons_by_default.mbx $ make -C tools/perf O=3D/tmp/perf clean make: Entering directory 'tools/perf' CLEAN x86 CLEAN libapi CLEAN libbpf CLEAN libsubcmd CLEAN libsymbol CLEAN libperf CLEAN fixdep CLEAN feature-detect CLEAN python CLEAN bpf-skel CLEAN coresight CLEAN core-objs CLEAN core-progs CLEAN core-gen CLEAN Documentation make: Leaving directory 'tools/perf' $ make -C tools/perf O=3D/tmp/perf make: Entering directory 'tools/perf' BUILD: Doing 'make -j8' parallel build HOSTCC /tmp/perf/fixdep.o HOSTLD /tmp/perf/fixdep-in.o LINK /tmp/perf/fixdep Warning: Kernel ABI header differences: diff -u tools/include/uapi/drm/drm.h include/uapi/drm/drm.h diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h diff -u tools/include/uapi/linux/mount.h include/uapi/linux/mount.h diff -u tools/arch/x86/include/asm/disabled-features.h arch/x86/include/asm/disabled-features.h diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-in= dex.h diff -u tools/arch/x86/include/uapi/asm/prctl.h arch/x86/include/uapi/asm/prctl.h diff -u tools/arch/arm64/include/uapi/asm/perf_regs.h arch/arm64/include/uapi/asm/perf_regs.h diff -u tools/arch/s390/include/uapi/asm/kvm.h arch/s390/include/uapi/asm/= kvm.h diff -u tools/include/uapi/asm-generic/unistd.h include/uapi/asm-generic/unistd.h diff -u tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl diff -u tools/perf/arch/powerpc/entry/syscalls/syscall.tbl arch/powerpc/kernel/syscalls/syscall.tbl diff -u tools/perf/arch/s390/entry/syscalls/syscall.tbl arch/s390/kernel/syscalls/syscall.tbl diff -u tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl arch/mips/kernel/syscalls/syscall_n64.tbl diff -u tools/perf/util/hashmap.h tools/lib/bpf/hashmap.h Makefile.config:607: No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev Makefile.config:1009: No libcap found, disables capability support, please install libcap-devel/libcap-dev Makefile.config:1022: No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev Makefile.config:1081: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev Auto-detecting system features: ... dwarf: [ on ] ... dwarf_getlocations: [ on ] ... glibc: [ on ] ... libbfd: [ on ] ... libbfd-buildid: [ on ] ... libcap: [ OFF ] ... libelf: [ on ] ... libnuma: [ OFF ] ... numa_num_possible_cpus: [ OFF ] ... libperl: [ on ] ... libpython: [ on ] ... libcrypto: [ on ] ... libunwind: [ on ] ... libdw-dwarf-unwind: [ on ] ... zlib: [ on ] ... lzma: [ on ] ... get_cpuid: [ on ] ... bpf: [ on ] ... libaio: [ on ] ... libzstd: [ on ] GEN /tmp/perf/common-cmds.h CC /tmp/perf/jvmti/libjvmti.o CC /tmp/perf/dlfilters/dlfilter-test-api-v0.o CC /tmp/perf/dlfilters/dlfilter-test-api-v2.o CC /tmp/perf/dlfilters/dlfilter-show-cycles.o CC /tmp/perf/jvmti/jvmti_agent.o MKDIR /tmp/perf/libapi/fd/ INSTALL /tmp/perf/libapi/include/api/cpu.h CC /tmp/perf/libapi/fd/array.o INSTALL /tmp/perf/libapi/include/api/debug.h INSTALL /tmp/perf/libapi/include/api/io.h PERF_VERSION =3D 6.6.rc1.gda192f0aaa30 CC /tmp/perf/jvmti/libstring.o CC /tmp/perf/jvmti/libctype.o LD /tmp/perf/libapi/fd/libapi-in.o MKDIR /tmp/perf/libapi/fs/ CC /tmp/perf/libperf/core.o CC /tmp/perf/libapi/fs/fs.o CC /tmp/perf/libperf/cpumap.o CC /tmp/perf/libsubcmd/exec-cmd.o CC /tmp/perf/libperf/threadmap.o INSTALL /tmp/perf/libperf/include/perf/bpf_perf.h LD /tmp/perf/jvmti/jvmti-in.o INSTALL /tmp/perf/libperf/include/perf/core.h INSTALL /tmp/perf/libapi/include/api/fd/array.h INSTALL /tmp/perf/libsubcmd/include/subcmd/exec-cmd.h INSTALL /tmp/perf/libapi/include/api/fs/fs.h INSTALL /tmp/perf/libsubcmd/include/subcmd/help.h INSTALL /tmp/perf/libsubcmd/include/subcmd/pager.h INSTALL /tmp/perf/libapi/include/api/fs/tracing_path.h CC /tmp/perf/libperf/evsel.o CC /tmp/perf/libperf/evlist.o INSTALL libapi_headers CC /tmp/perf/libperf/mmap.o CC /tmp/perf/libperf/zalloc.o CC /tmp/perf/libsymbol/kallsyms.o CC /tmp/perf/libperf/xyarray.o CC /tmp/perf/libperf/lib.o CC /tmp/perf/libsubcmd/help.o MKDIR /tmp/perf/libapi/fs/ CC /tmp/perf/libapi/fs/tracing_path.o CC /tmp/perf/libsubcmd/pager.o INSTALL /tmp/perf/libperf/include/perf/cpumap.h CC /tmp/perf/libapi/cpu.o INSTALL /tmp/perf/libperf/include/perf/threadmap.h INSTALL /tmp/perf/libperf/include/perf/evlist.h INSTALL /tmp/perf/libperf/include/perf/evsel.h INSTALL /tmp/perf/libperf/include/perf/event.h INSTALL /tmp/perf/libperf/include/perf/mmap.h INSTALL /tmp/perf/libperf/include/internal/cpumap.h INSTALL /tmp/perf/libperf/include/internal/evlist.h INSTALL /tmp/perf/libperf/include/internal/evsel.h LD /tmp/perf/libsymbol/libsymbol-in.o LD /tmp/perf/libperf/libperf-in.o INSTALL /tmp/perf/libperf/include/internal/lib.h INSTALL /tmp/perf/libperf/include/internal/mmap.h INSTALL /tmp/perf/libsymbol/include/symbol/kallsyms.h INSTALL /tmp/perf/libsubcmd/include/subcmd/parse-options.h INSTALL /tmp/perf/libperf/include/internal/rc_check.h CC /tmp/perf/libapi/fs/cgroup.o INSTALL /tmp/perf/libperf/include/internal/threadmap.h INSTALL /tmp/perf/libsubcmd/include/subcmd/run-command.h AR /tmp/perf/libsymbol/libsymbol.a INSTALL /tmp/perf/libperf/include/internal/xyarray.h INSTALL libsymbol_headers INSTALL libsubcmd_headers LINK /tmp/perf/libperf-jvmti.so AR /tmp/perf/libperf/libperf.a GEN perf-archive GEN perf-iostat LINK /tmp/perf/dlfilters/dlfilter-test-api-v0.so CC /tmp/perf/libsubcmd/parse-options.o LD /tmp/perf/libapi/fs/libapi-in.o GEN /tmp/perf/libbpf/bpf_helper_defs.h CC /tmp/perf/libapi/debug.o LINK /tmp/perf/dlfilters/dlfilter-test-api-v2.so LINK /tmp/perf/dlfilters/dlfilter-show-cycles.so INSTALL libperf_headers CC /tmp/perf/libapi/str_error_r.o INSTALL /tmp/perf/libbpf/include/bpf/bpf.h INSTALL /tmp/perf/libbpf/include/bpf/libbpf.h CC /tmp/perf/libsubcmd/run-command.o INSTALL /tmp/perf/libbpf/include/bpf/btf.h INSTALL /tmp/perf/libbpf/include/bpf/libbpf_common.h INSTALL /tmp/perf/libbpf/include/bpf/libbpf_legacy.h INSTALL /tmp/perf/libbpf/include/bpf/bpf_helpers.h INSTALL /tmp/perf/libbpf/include/bpf/bpf_tracing.h INSTALL /tmp/perf/libbpf/include/bpf/bpf_endian.h INSTALL /tmp/perf/libbpf/include/bpf/bpf_core_read.h INSTALL /tmp/perf/libbpf/include/bpf/skel_internal.h INSTALL /tmp/perf/libbpf/include/bpf/libbpf_version.h LD /tmp/perf/libapi/libapi-in.o INSTALL /tmp/perf/libbpf/include/bpf/bpf_helper_defs.h CC /tmp/perf/libsubcmd/sigchain.o MKDIR /tmp/perf/libbpf/staticobjs/ CC /tmp/perf/libbpf/staticobjs/libbpf.o AR /tmp/perf/libapi/libapi.a CC /tmp/perf/libsubcmd/subcmd-config.o INSTALL /tmp/perf/libbpf/include/bpf/usdt.bpf.h INSTALL libbpf_headers MKDIR /tmp/perf/libbpf/staticobjs/ CC /tmp/perf/libbpf/staticobjs/bpf.o CC /tmp/perf/libbpf/staticobjs/nlattr.o CC /tmp/perf/libbpf/staticobjs/btf.o CC /tmp/perf/libbpf/staticobjs/libbpf_errno.o CC /tmp/perf/libbpf/staticobjs/str_error.o CC /tmp/perf/libbpf/staticobjs/netlink.o CC /tmp/perf/libbpf/staticobjs/bpf_prog_linfo.o CC /tmp/perf/libbpf/staticobjs/libbpf_probes.o CC /tmp/perf/libbpf/staticobjs/hashmap.o LD /tmp/perf/libsubcmd/libsubcmd-in.o AR /tmp/perf/libsubcmd/libsubcmd.a CC /tmp/perf/libbpf/staticobjs/btf_dump.o CC /tmp/perf/libbpf/staticobjs/ringbuf.o GEN /tmp/perf/python/perf.cpython-311-x86_64-linux-gnu.so CC /tmp/perf/libbpf/staticobjs/strset.o CC /tmp/perf/libbpf/staticobjs/linker.o CC /tmp/perf/libbpf/staticobjs/gen_loader.o CC /tmp/perf/libbpf/staticobjs/relo_core.o Auto-detecting system features: ... clang-bpf-co-re: [ on ] ... llvm: [ OFF ] ... libcap: [ OFF ] ... libbfd: [ on ] MKDIR /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf MKDIR /tmp/perf/util/bpf_skel/.tmp/bootstrap/ MKDIR /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/ INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/hashmap.= h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/relo_cor= e.h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/libbpf_i= nternal.h GEN /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/bpf_helper_defs.h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/bpf.h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/libbpf.h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/btf.h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/libbpf_c= ommon.h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/libbpf_l= egacy.h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/bpf_help= ers.h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/bpf_trac= ing.h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/bpf_endi= an.h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/bpf_core= _read.h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/skel_int= ernal.h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/libbpf_v= ersion.h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/usdt.bpf= .h INSTALL /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/bpf_help= er_defs.h MKDIR /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/ CC /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/libbpf.o CC /tmp/perf/libbpf/staticobjs/usdt.o CC /tmp/perf/libbpf/staticobjs/zip.o CC /tmp/perf/libbpf/staticobjs/elf.o MKDIR /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/ CC /tmp/perf/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/bpf.o CC 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