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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 11371C32793 for ; Wed, 24 Aug 2022 04:48:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234783AbiHXEsp (ORCPT ); Wed, 24 Aug 2022 00:48:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51406 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230245AbiHXEsn (ORCPT ); Wed, 24 Aug 2022 00:48:43 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 1A0347C18C; Tue, 23 Aug 2022 21:48:41 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5D16A113E; Tue, 23 Aug 2022 21:48:45 -0700 (PDT) Received: from a077893.blr.arm.com (unknown [10.162.43.6]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id E57103F67D; Tue, 23 Aug 2022 21:48:35 -0700 (PDT) From: Anshuman Khandual To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, peterz@infradead.org, alexander.shishkin@linux.intel.com, jolsa@redhat.com, acme@kernel.org, mark.rutland@arm.com Cc: Anshuman Khandual , Robin Murphy , Suzuki Poulose , James Clark , Ingo Molnar , Namhyung Kim , Thomas Gleixner , Will Deacon , Catalin Marinas , linux-arm-kernel@lists.infradead.org Subject: [PATCH V7 0/8] perf: Expand perf_branch_entry Date: Wed, 24 Aug 2022 10:18:14 +0530 Message-Id: <20220824044822.70230-1-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Branch Record Buffer Extension (BRBE) implementation on arm64 captures more branch type classification which cannot be accommodated in the current perf branch record format via perf_branch_entry.type element (4 bit field). Also it captures privilege information which does not have a corresponding slot in perf_branch_entry. This series expands struct perf_branch_entry, to meet both these requirements without breaking the existing user space ABI for perf tools. All architecture specific branch types added via perf_branch_entry.new_type field in [PATCH 3/4] will be used in BRBE implementation on arm64 platform later on with the following map. #ifdef CONFIG_ARM64 #define PERF_BR_FIQ PERF_BR_NEW_ARCH_1 #define PERF_BR_DEBUG_HALT PERF_BR_NEW_ARCH_2 #define PERF_BR_DEBUG_EXIT PERF_BR_NEW_ARCH_3 #define PERF_BR_DEBUG_INST PERF_BR_NEW_ARCH_4 #define PERF_BR_DEBUG_DATA PERF_BR_NEW_ARCH_5 #endif This series applies on v6.20-rc2 perf API The series being applied - Clean : tools/perf/check-headers.sh - Clean : diff -u tools/include/uapi/linux/perf_event.h include/uapi/linux/perf_event.h References - BRBE captured branch record information https://developer.arm.com/documentation/ddi0601/2021-12/AArch64-Registers/BRBINF-n--EL1--Branch-Record-Buffer-Information-Register--n-?lang=en - BRBE based perf branch stack implementation on arm64 platform https://lore.kernel.org/all/1642998653-21377-1-git-send-email-anshuman.khandual@arm.com/ Changes in V7: - Collected earlier 'Reviewed-by:' tags from James Clark - Rebased on v6.0-rc2 Changes in V6: https://lore.kernel.org/linux-arm-kernel/20220610035101.424112-1-anshuman.khandual@arm.com/ - Process PERF_BR_EXTEND_ABI in perf tools and fetch from perf_branch_entry.new_type - Modified the commit message for [PATCH 1/8] Changes in V5: https://lore.kernel.org/linux-arm-kernel/20220404045046.634522-1-anshuman.khandual@arm.com/ - Dropped patches [PATCH 1/10] and [PATCH 6/10] related to PERF_BR_[RET|IRQ] - merged via the commit cedd3614e5d9c809 ("perf: Add irq and exception return branch types") - Rebased series on v5.18-rc1 Changes in V4: https://lore.kernel.org/all/20220315053516.431515-1-anshuman.khandual@arm.com/ - Modified the struct branch_flags as required - Dropped CONFIG_ARM64 from perf header file to avoid build problem - Renamed PERF_BR_NEW_ as PERF_BR_ARM64_ Changes in V3: https://lore.kernel.org/all/20220314055857.125421-1-anshuman.khandual@arm.com/ - Fixed small typo s/privillege/privilege in include/uapi/linux/perf_event.h - Added PRIV_SHIFT in __p_branch_sample_type() - Added arm64 platform override of the new arch specific branch types - Renamed s/PERF_BR_XXX/PERF_BR_PRIV_XXX/ for privilege level branch types - Added PERF_BR_PRIV_UNKNOWN as the starting value - Expanded perf_branch_entry.priv into a 3 bits field Changes in V2: https://lore.kernel.org/all/20220309033642.144769-1-anshuman.khandual@arm.com/ Cc: Robin Murphy Cc: Suzuki Poulose Cc: James Clark Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Arnaldo Carvalho de Melo Cc: Mark Rutland Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Namhyung Kim Cc: Thomas Gleixner Cc: Will Deacon Cc: Catalin Marinas Cc: linux-arm-kernel@lists.infradead.org Cc: linux-perf-users@vger.kernel.org Cc: linux-kernel@vger.kernel.org Anshuman Khandual (8): perf: Add system error and not in transaction branch types perf: Extend branch type classification perf: Capture branch privilege information perf: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform perf/tools: Add system error and not in transaction branch types perf/tools: Extend branch type classification perf/tools: Add branch privilege information request flag perf/tools: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform arch/x86/events/intel/lbr.c | 2 +- include/uapi/linux/perf_event.h | 36 +++++++++++- tools/include/uapi/linux/perf_event.h | 36 +++++++++++- tools/perf/Documentation/perf-record.txt | 1 + tools/perf/builtin-script.c | 2 +- tools/perf/util/branch.c | 69 ++++++++++++++++++++++- tools/perf/util/branch.h | 7 ++- tools/perf/util/parse-branch-options.c | 1 + tools/perf/util/perf_event_attr_fprintf.c | 2 +- tools/perf/util/session.c | 2 +- 10 files changed, 149 insertions(+), 9 deletions(-) -- 2.25.1