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 467C9C433F5 for ; Mon, 14 Mar 2022 05:59:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236200AbiCNGA1 (ORCPT ); Mon, 14 Mar 2022 02:00:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38378 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229688AbiCNGAX (ORCPT ); Mon, 14 Mar 2022 02:00:23 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 0D82F186FD; Sun, 13 Mar 2022 22:59:12 -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 8CA811042; Sun, 13 Mar 2022 22:59:12 -0700 (PDT) Received: from a077893.arm.com (unknown [10.163.33.185]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 5E1E53F7D7; Sun, 13 Mar 2022 22:59:04 -0700 (PDT) From: Anshuman Khandual To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, peterz@infradead.org, acme@kernel.org Cc: Anshuman Khandual , Suzuki Poulose , James Clark , Ingo Molnar , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Thomas Gleixner , Will Deacon , linux-arm-kernel@lists.infradead.org Subject: [PATCH V3 00/10] perf: Expand perf_branch_entry Date: Mon, 14 Mar 2022 11:28:47 +0530 Message-Id: <20220314055857.125421-1-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 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-rc8 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/ Changes in V3: - 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: 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: linux-arm-kernel@lists.infradead.org Cc: linux-perf-users@vger.kernel.org Cc: linux-kernel@vger.kernel.org Anshuman Khandual (10): 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: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform 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 perf/tools: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform arch/x86/events/intel/lbr.c | 6 ++-- include/uapi/linux/perf_event.h | 40 ++++++++++++++++++++++- tools/include/uapi/linux/perf_event.h | 40 ++++++++++++++++++++++- tools/perf/Documentation/perf-record.txt | 1 + tools/perf/util/branch.c | 7 +++- tools/perf/util/parse-branch-options.c | 1 + tools/perf/util/perf_event_attr_fprintf.c | 2 +- 7 files changed, 90 insertions(+), 7 deletions(-) -- 2.25.1 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 33A81C433F5 for ; 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Mon, 14 Mar 2022 05:59:18 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nTdjf-003r4j-KH for linux-arm-kernel@lists.infradead.org; Mon, 14 Mar 2022 05:59:17 +0000 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 8CA811042; Sun, 13 Mar 2022 22:59:12 -0700 (PDT) Received: from a077893.arm.com (unknown [10.163.33.185]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 5E1E53F7D7; Sun, 13 Mar 2022 22:59:04 -0700 (PDT) From: Anshuman Khandual To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, peterz@infradead.org, acme@kernel.org Cc: Anshuman Khandual , Suzuki Poulose , James Clark , Ingo Molnar , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Thomas Gleixner , Will Deacon , linux-arm-kernel@lists.infradead.org Subject: [PATCH V3 00/10] perf: Expand perf_branch_entry Date: Mon, 14 Mar 2022 11:28:47 +0530 Message-Id: <20220314055857.125421-1-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220313_225915_804064_CE313150 X-CRM114-Status: GOOD ( 14.15 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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-rc8 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/ Changes in V3: - 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: 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: linux-arm-kernel@lists.infradead.org Cc: linux-perf-users@vger.kernel.org Cc: linux-kernel@vger.kernel.org Anshuman Khandual (10): 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: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform 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 perf/tools: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform arch/x86/events/intel/lbr.c | 6 ++-- include/uapi/linux/perf_event.h | 40 ++++++++++++++++++++++- tools/include/uapi/linux/perf_event.h | 40 ++++++++++++++++++++++- tools/perf/Documentation/perf-record.txt | 1 + tools/perf/util/branch.c | 7 +++- tools/perf/util/parse-branch-options.c | 1 + tools/perf/util/perf_event_attr_fprintf.c | 2 +- 7 files changed, 90 insertions(+), 7 deletions(-) -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel