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smtp.aliyun-inc.com(10.147.40.44); Wed, 21 Aug 2019 18:57:04 +0800 Date: Wed, 21 Aug 2019 18:57:04 +0800 From: Mao Han To: Greentime Hu Subject: Re: [PATCH V4 1/3] riscv: Add perf callchain support Message-ID: <20190821105704.GA8431@vmh-VirtualBox> References: <820d80272fc5627b8d00e684663a614470217606.1566290744.git.han_mao@c-sky.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190821_035712_757697_D17CCD58 X-CRM114-Status: GOOD ( 11.26 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: palmer@sifive.com, linux-kernel@vger.kernel.org, linux-csky@vegr.kernel.org, paul.walmsley@sifive.com, linux-riscv@lists.infradead.org, hch@lst.de Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: 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dkBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4v bGlzdGluZm8vbGludXgtcmlzY3YK 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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=no 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 4261EC3A59E for ; Wed, 21 Aug 2019 10:57:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 098BB22CF4 for ; Wed, 21 Aug 2019 10:57:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727188AbfHUK5J (ORCPT ); Wed, 21 Aug 2019 06:57:09 -0400 Received: from smtp2200-217.mail.aliyun.com ([121.197.200.217]:48000 "EHLO smtp2200-217.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726330AbfHUK5J (ORCPT ); Wed, 21 Aug 2019 06:57:09 -0400 X-Alimail-AntiSpam: AC=CONTINUE;BC=0.07436282|-1;CH=green;DM=CONTINUE|CONTINUE|true|0.258884-0.00885615-0.73226;FP=0|0|0|0|0|-1|-1|-1;HT=e02c03301;MF=han_mao@c-sky.com;NM=1;PH=DS;RN=7;RT=7;SR=0;TI=SMTPD_---.FFrRGz4_1566385024; Received: from localhost(mailfrom:han_mao@c-sky.com fp:SMTPD_---.FFrRGz4_1566385024) by smtp.aliyun-inc.com(10.147.40.44); Wed, 21 Aug 2019 18:57:04 +0800 Date: Wed, 21 Aug 2019 18:57:04 +0800 From: Mao Han To: Greentime Hu Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, paul.walmsley@sifive.com, palmer@sifive.com, hch@lst.de, linux-csky@vegr.kernel.org Subject: Re: [PATCH V4 1/3] riscv: Add perf callchain support Message-ID: <20190821105704.GA8431@vmh-VirtualBox> References: <820d80272fc5627b8d00e684663a614470217606.1566290744.git.han_mao@c-sky.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Greentime, On Wed, Aug 21, 2019 at 05:16:13PM +0800, Greentime Hu wrote: > Hi Mao, > > Mao Han 於 2019年8月20日 週二 下午4:57寫道： > > > > This patch add support for perf callchain sampling on riscv platform. > > The return address of leaf function is retrieved from pt_regs as > > it is not saved in the outmost frame. > > > > > > Not sure if I did something wrong. I encounter a build error when I > try to build tools/perf/tests > > CC arch/riscv/util/dwarf-regs.o > arch/riscv/util/dwarf-regs.c:64:5: error: no previous prototype for > ‘regs_query_register_offset’ [-Werror=missing-prototypes] > This seems becasue I didn't add PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET in tools/perf/arch/riscv/Makefile so the prototype in ./util/include/dwarf-regs.h is not declared. I'll add that in the next version. > I simply add its prototype and it could be built pass. > This is my testing results. > # ./perf test > 1: vmlinux symtab matches kallsyms : Skip > 2: Detect openat syscall event : FAILED! > 3: Detect openat syscall event on all cpus : FAILED! > 4: Read samples using the mmap interface : FAILED! > 5: Test data source output : Ok > 6: Parse event definition strings : FAILED! > 7: Simple expression parser : Ok > 8: PERF_RECORD_* events & perf_sample fields : FAILED! > 9: Parse perf pmu format : Ok > 10: DSO data read : Ok > 11: DSO data cache : Ok > 12: DSO data reopen : Ok > 13: Roundtrip evsel->name : Ok > 14: Parse sched tracepoints fields : FAILED! > 15: syscalls:sys_enter_openat event fields : FAILED! > 16: Setup struct perf_event_attr : FAILED! > 17: Match and link multiple hists : Ok > 18: 'import perf' in python : FAILED! > > 19: Breakpoint overflow signal handler : FAILED! > 20: Breakpoint overflow sampling : FAILED! > 21: Breakpoint accounting : Skip > 22: Watchpoint : > 22.1: Read Only Watchpoint : FAILED! > 22.2: Write Only Watchpoint : FAILED! > 22.3: Read / Write Watchpoint : FAILED! > 22.4: Modify Watchpoint : FAILED! > 23: Number of exit events of a simple workload : Ok > 24: Software clock events period values : Ok > 25: Object code reading : Ok > 26: Sample parsing : Ok > 27: Use a dummy software event to keep tracking : Ok > 28: Parse with no sample_id_all bit set : Ok > 29: Filter hist entries : Ok > 30: Lookup mmap thread : Ok > 31: Share thread mg : Ok > 32: Sort output of hist entries : Ok > 33: Cumulate child hist entries : Ok > 34: Track with sched_switch : Ok > 35: Filter fds with revents mask in a fdarray : Ok > 36: Add fd to a fdarray, making it autogrow : Ok > 37: kmod_path__parse : Ok > 38: Thread map : Ok > 39: LLVM search and compile : > 39.1: Basic BPF llvm compile : Skip > 39.2: kbuild searching : Skip > 39.3: Compile source for BPF prologue generation : Skip > 39.4: Compile source for BPF relocation : Skip > 40: Session topology : FAILED! > 41: BPF filter : > 41.1: Basic BPF filtering : Skip > 41.2: BPF pinning : Skip > 41.3: BPF relocation checker : Skip > 42: Synthesize thread map : Ok > 43: Remove thread map : Ok > 44: Synthesize cpu map : Ok > 45: Synthesize stat config : Ok > 46: Synthesize stat : Ok > 47: Synthesize stat round : Ok > 48: Synthesize attr update : Ok > 49: Event times : Ok > 50: Read backward ring buffer : Skip > 51: Print cpu map : Ok > 52: Probe SDT events : Skip > 53: is_printable_array : Ok > 54: Print bitmap : Ok > 55: perf hooks : Ok > 56: builtin clang support : Skip (not > compiled in) > 57: unit_number__scnprintf : Ok > 58: mem2node : Ok > 59: time utils : Ok > 60: map_groups__merge_in : Ok > 61: probe libc's inet_pton & backtrace it with ping : FAILED! > 62: Add vfs_getname probe to get syscall args filenames : FAILED! > 63: Check open filename arg using perf trace + vfs_getname: Skip > 64: Use vfs_getname probe to get syscall args filenames : FAILED! > 65: Zstd perf.data compression/decompression : Skip > The perf test result I got is quiet similar to yours, but with 5 less testcases. 1: vmlinux symtab matches kallsyms : Skip 2: Detect openat syscall event : FAILED! 3: Detect openat syscall event on all cpus : FAILED! 4: Read samples using the mmap interface : FAILED! 5: Test data source output : Ok 6: Parse event definition strings : FAILED! 7: Simple expression parser : Ok 8: PERF_RECORD_* events & perf_sample fields : FAILED! 9: Parse perf pmu format : Ok 10: DSO data read : Ok 11: DSO data cache : Ok 12: DSO data reopen : Ok 13: Roundtrip evsel->name : Ok 14: Parse sched tracepoints fields : FAILED! 15: syscalls:sys_enter_openat event fields : FAILED! 16: Setup struct perf_event_attr : Skip 17: Match and link multiple hists : Ok 18: 'import perf' in python : Ok 19: Breakpoint overflow signal handler : FAILED! 20: Breakpoint overflow sampling : FAILED! 21: Breakpoint accounting : Skip 22: Watchpoint : 22.1: Read Only Watchpoint : FAILED! 22.2: Write Only Watchpoint : FAILED! 22.3: Read / Write Watchpoint : FAILED! 22.4: Modify Watchpoint : FAILED! 23: Number of exit events of a simple workload : Ok 24: Software clock events period values : Ok 25: Object code reading : Ok 26: Sample parsing : Ok 27: Use a dummy software event to keep tracking: Ok 28: Parse with no sample_id_all bit set : Ok 29: Filter hist entries : Ok 30: Lookup mmap thread : Ok 31: Share thread mg : Ok 32: Sort output of hist entries : Ok 33: Cumulate child hist entries : Ok 34: Track with sched_switch : Ok 35: Filter fds with revents mask in a fdarray : Ok 36: Add fd to a fdarray, making it autogrow : Ok 37: kmod_path__parse : Ok 38: Thread map : Ok 39: LLVM search and compile : 39.1: Basic BPF llvm compile : Skip 39.2: kbuild searching : Skip 39.3: Compile source for BPF prologue generation: Skip 39.4: Compile source for BPF relocation : Skip 40: Session topology : FAILED! 41: BPF filter : 41.1: Basic BPF filtering : Skip 41.2: BPF pinning : Skip 41.3: BPF relocation checker : Skip 42: Synthesize thread map : Ok 43: Remove thread map : Ok 44: Synthesize cpu map : Ok 45: Synthesize stat config : Ok 46: Synthesize stat : Ok 47: Synthesize stat round : Ok 48: Synthesize attr update : Ok 49: Event times : Ok 50: Read backward ring buffer : Skip 51: Print cpu map : Ok 52: Probe SDT events : Skip 53: is_printable_array : Ok 54: Print bitmap : Ok 55: perf hooks : Ok 56: builtin clang support : Skip (not compiled in) 57: unit_number__scnprintf : Ok 58: mem2node : Ok 59: time utils : Ok 60: map_groups__merge_in : Ok The comparison before/after applied this patch set: /tools/perf/util# diff perf_test_before perf_test_after 1d0 < # perf test 8c7 < 7: Simple expression parser : FAILED! --- > 7: Simple expression parser : Ok