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[209.6.122.159]) by smtp.gmail.com with ESMTPSA id o189sm2350100qka.86.2021.04.30.13.16.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Apr 2021 13:16:27 -0700 (PDT) Date: Fri, 30 Apr 2021 16:16:25 -0400 From: Masayoshi Mizuma To: Rob Herring Cc: Will Deacon , Catalin Marinas , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Jiri Olsa , Mark Rutland , Alexander Shishkin , Honnappa Nagarahalli , Zachary.Leaf@arm.com, Raphael Gault , Jonathan Cameron , Namhyung Kim , Itaru Kitayama , linux-arm-kernel , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v7 7/9] perf: arm64: Add test for userspace counter access on heterogeneous systems Message-ID: <20210430201625.mpxeop6niyxnnvbk@gabell> References: <20210420031511.2348977-1-robh@kernel.org> <20210420031511.2348977-8-robh@kernel.org> <20210430164616.pzb7yxrsugexso25@gabell> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 30, 2021 at 01:20:58PM -0500, Rob Herring wrote: > On Fri, Apr 30, 2021 at 1:17 PM Rob Herring wrote: > > > > On Fri, Apr 30, 2021 at 11:46 AM Masayoshi Mizuma wrote: > > > > > > On Mon, Apr 19, 2021 at 10:15:09PM -0500, Rob Herring wrote: > > > > Userspace counter access only works on heterogeneous systems with some > > > > restrictions. The userspace process must be pinned to a homogeneous > > > > subset of CPUs and must open the corresponding PMU for those CPUs. This > > > > commit adds a test implementing these requirements. > > > > > > > > Signed-off-by: Rob Herring > > > > --- > > > > v6: > > > > - Add a check on cap_user_rdpmc > > > > v5: > > > > - Adapt to libperf mmap API changes > > > > v4: > > > > - Update perf_evsel__mmap params > > > > v2: > > > > - Drop all but heterogeneous test as others covered by libperf tests > > > > - Rework to use libperf > > > > --- > > > > tools/perf/arch/arm64/include/arch-tests.h | 7 + > > > > tools/perf/arch/arm64/tests/Build | 1 + > > > > tools/perf/arch/arm64/tests/arch-tests.c | 4 + > > > > tools/perf/arch/arm64/tests/user-events.c | 177 +++++++++++++++++++++ > > > > 4 files changed, 189 insertions(+) > > > > create mode 100644 tools/perf/arch/arm64/tests/user-events.c > > > > > > > > diff --git a/tools/perf/arch/arm64/include/arch-tests.h b/tools/perf/arch/arm64/include/arch-tests.h > > > > index 90ec4c8cb880..380ad34a3f09 100644 > > > > --- a/tools/perf/arch/arm64/include/arch-tests.h > > > > +++ b/tools/perf/arch/arm64/include/arch-tests.h > > > > @@ -2,11 +2,18 @@ > > > > #ifndef ARCH_TESTS_H > > > > #define ARCH_TESTS_H > > > > > > > > +#include > > > > + > > > > #ifdef HAVE_DWARF_UNWIND_SUPPORT > > > > struct thread; > > > > struct perf_sample; > > > > +int test__arch_unwind_sample(struct perf_sample *sample, > > > > + struct thread *thread); > > > > #endif > > > > > > Hello, > > > > > > I got the following compile error with aarch64 on Fedora33. > > > > > > # make tools/perf > > > ... > > > In file included from arch/arm64/tests/arch-tests.c:4: > > > /root//libperf_v7/tools/perf/arch/arm64/include/arch-tests.h:10:5: error: redundant redeclaration of ‘test__arch_unwind_sample’ [-Werror=redundant-decls] > > > 10 | int test__arch_unwind_sample(struct perf_sample *sample, > > > | ^~~~~~~~~~~~~~~~~~~~~~~~ > > > In file included from arch/arm64/tests/arch-tests.c:3: > > > /root//libperf_v7/tools/perf/tests/tests.h:140:5: note: previous declaration of ‘test__arch_unwind_sample’ was here > > > 140 | int test__arch_unwind_sample(struct perf_sample *sample, > > > | ^~~~~~~~~~~~~~~~~~~~~~~~ > > > cc1: all warnings being treated as errors > > > make[8]: *** [/root//libperf_v7/tools/build/Makefile.build:97: /root/libperf_v7/tools/perf/arch/arm64/tests/arch-tests.o] Error 1 > > > make[8]: *** Waiting for unfinished jobs.... > > > In file included from arch/arm64/tests/user-events.c:13: > > > /root//libperf_v7/tools/perf/arch/arm64/include/arch-tests.h:10:5: error: redundant redeclaration of ‘test__arch_unwind_sample’ [-Werror=redundant-decls] > > > 10 | int test__arch_unwind_sample(struct perf_sample *sample, > > > | ^~~~~~~~~~~~~~~~~~~~~~~~ > > > In file included from arch/arm64/tests/user-events.c:12: > > > /root//libperf_v7/tools/perf/tests/tests.h:140:5: note: previous declaration of ‘test__arch_unwind_sample’ was here > > > 140 | int test__arch_unwind_sample(struct perf_sample *sample, > > > | ^~~~~~~~~~~~~~~~~~~~~~~~ > > > cc1: all warnings being treated as errors > > > ... > > > > > > The error is gone after the following patch is applied. > > > > Thanks. Honestly, I'm not sure why it was there in the first place. > > Looking at the git history and this series history doesn't give any > > clues. > > Well, except that both x86 and powerpc have the same hunk in their > arch-tests.h. Do you see errors on those arches? I didn't see the errors on x86_64. It seems that the errors happen on aarch64 because test__arch_unwind_sample() is defined only if the arch is arm or arm64 in tools/perf/tests/tests.h: #if defined(__arm__) || defined(__aarch64__) #ifdef HAVE_DWARF_UNWIND_SUPPORT struct thread; struct perf_sample; int test__arch_unwind_sample(struct perf_sample *sample, struct thread *thread); #endif #endif The following patch may be another solution which is same way as commit d8b167f9d8af ("perf tests: Move x86 tests into arch directory"). --- tools/perf/arch/arm64/tests/dwarf-unwind.c | 1 + tools/perf/tests/dwarf-unwind.c | 2 +- tools/perf/tests/tests.h | 2 +- 3 files changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/perf/arch/arm64/tests/dwarf-unwind.c b/tools/perf/arch/arm64/tests/dwarf-unwind.c index 46147a483..02ba87f2b 100644 --- a/tools/perf/arch/arm64/tests/dwarf-unwind.c +++ b/tools/perf/arch/arm64/tests/dwarf-unwind.c @@ -7,6 +7,7 @@ #include "event.h" #include "debug.h" #include "tests/tests.h" +#include "arch-tests.h" #define STACK_SIZE 8192 diff --git a/tools/perf/tests/dwarf-unwind.c b/tools/perf/tests/dwarf-unwind.c index 83638097c..daffe2d66 100644 --- a/tools/perf/tests/dwarf-unwind.c +++ b/tools/perf/tests/dwarf-unwind.c @@ -17,7 +17,7 @@ #include "callchain.h" #include "util/synthetic-events.h" -#if defined (__x86_64__) || defined (__i386__) || defined (__powerpc__) +#if defined (__x86_64__) || defined (__i386__) || defined (__powerpc__) || defined(__aarch64__) #include "arch-tests.h" #endif diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index b85f00530..40cbdfa46 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -133,7 +133,7 @@ bool test__bp_account_is_supported(void); bool test__wp_is_supported(void); bool test__tsc_is_supported(void); -#if defined(__arm__) || defined(__aarch64__) +#if defined(__arm__) #ifdef HAVE_DWARF_UNWIND_SUPPORT struct thread; struct perf_sample; -- Thanks, Masa 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 X-Spam-Level: X-Spam-Status: No, score=-10.7 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C1C5DC433ED for ; Fri, 30 Apr 2021 20:21:55 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1D8916128C for ; 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[209.6.122.159]) by smtp.gmail.com with ESMTPSA id o189sm2350100qka.86.2021.04.30.13.16.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Apr 2021 13:16:27 -0700 (PDT) Date: Fri, 30 Apr 2021 16:16:25 -0400 From: Masayoshi Mizuma To: Rob Herring Cc: Will Deacon , Catalin Marinas , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Jiri Olsa , Mark Rutland , Alexander Shishkin , Honnappa Nagarahalli , Zachary.Leaf@arm.com, Raphael Gault , Jonathan Cameron , Namhyung Kim , Itaru Kitayama , linux-arm-kernel , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v7 7/9] perf: arm64: Add test for userspace counter access on heterogeneous systems Message-ID: <20210430201625.mpxeop6niyxnnvbk@gabell> References: <20210420031511.2348977-1-robh@kernel.org> <20210420031511.2348977-8-robh@kernel.org> <20210430164616.pzb7yxrsugexso25@gabell> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 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