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 3D47FC433EF for ; Wed, 9 Mar 2022 03:37:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231852AbiCIDiC (ORCPT ); Tue, 8 Mar 2022 22:38:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57208 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231849AbiCIDiB (ORCPT ); Tue, 8 Mar 2022 22:38:01 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 49CF4A0BFA; Tue, 8 Mar 2022 19:37:03 -0800 (PST) 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 C831D1650; Tue, 8 Mar 2022 19:37:02 -0800 (PST) Received: from a077893.arm.com (unknown [10.163.52.241]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 4C6643FA4D; Tue, 8 Mar 2022 19:36:56 -0800 (PST) From: Anshuman Khandual To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, peterz@infradead.org, acme@kernel.org Cc: james.clark@arm.com, suzuki.poulose@arm.com, Anshuman Khandual , Ingo Molnar , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Thomas Gleixner , Will Deacon , linux-arm-kernel@lists.infradead.org Subject: [PATCH V2 0/8] perf: Expand perf_branch_entry Date: Wed, 9 Mar 2022 09:06:34 +0530 Message-Id: <20220309033642.144769-1-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-perf-users@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 actually combines following patches and series into a single series. - https://lore.kernel.org/all/1642998653-21377-12-git-send-email-anshuman.khandual@arm.com/ - https://lore.kernel.org/all/1643348653-24367-1-git-send-email-anshuman.khandual@arm.com/ - https://lore.kernel.org/all/1645681014-3346-1-git-send-email-anshuman.khandual@arm.com/ This series applies on v5.17-rc7 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 Todo - Update perf report tool to process PERF_BR_EXTEND_ABI (when available), then fetch and report branch types from perf_branch_entry.new_type field. 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/ 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: linux-arm-kernel@lists.infradead.org Cc: linux-perf-users@vger.kernel.org Cc: linux-kernel@vger.kernel.org Anshuman Khandual (8): perf: Add irq and exception return branch types perf: Add system error and not in transaction branch types perf: Extend branch type classification perf: Capture branch privilege information perf/tools: Add irq and exception return branch types 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 arch/x86/events/intel/lbr.c | 6 ++--- include/uapi/linux/perf_event.h | 31 +++++++++++++++++++++++- tools/include/uapi/linux/perf_event.h | 31 +++++++++++++++++++++++- tools/perf/Documentation/perf-record.txt | 1 + tools/perf/util/branch.c | 7 +++++- tools/perf/util/parse-branch-options.c | 1 + 6 files changed, 71 insertions(+), 6 deletions(-) -- 2.25.1