From: Anshuman Khandual <anshuman.khandual@arm.com> To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, peterz@infradead.org, acme@kernel.org Cc: Anshuman Khandual <anshuman.khandual@arm.com>, Suzuki Poulose <suzuki.poulose@arm.com>, James Clark <james.clark@arm.com>, Ingo Molnar <mingo@redhat.com>, Mark Rutland <mark.rutland@arm.com>, Alexander Shishkin <alexander.shishkin@linux.intel.com>, Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>, Thomas Gleixner <tglx@linutronix.de>, Will Deacon <will@kernel.org>, 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 [thread overview] Message-ID: <20220314055857.125421-1-anshuman.khandual@arm.com> (raw) 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 <suzuki.poulose@arm.com> Cc: James Clark <james.clark@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> 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
WARNING: multiple messages have this Message-ID (diff)
From: Anshuman Khandual <anshuman.khandual@arm.com> To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, peterz@infradead.org, acme@kernel.org Cc: Anshuman Khandual <anshuman.khandual@arm.com>, Suzuki Poulose <suzuki.poulose@arm.com>, James Clark <james.clark@arm.com>, Ingo Molnar <mingo@redhat.com>, Mark Rutland <mark.rutland@arm.com>, Alexander Shishkin <alexander.shishkin@linux.intel.com>, Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>, Thomas Gleixner <tglx@linutronix.de>, Will Deacon <will@kernel.org>, 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 [thread overview] Message-ID: <20220314055857.125421-1-anshuman.khandual@arm.com> (raw) 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 <suzuki.poulose@arm.com> Cc: James Clark <james.clark@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> 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
next reply other threads:[~2022-03-14 5:59 UTC|newest] Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-03-14 5:58 Anshuman Khandual [this message] 2022-03-14 5:58 ` [PATCH V3 00/10] perf: Expand perf_branch_entry Anshuman Khandual 2022-03-14 5:58 ` [PATCH V3 01/10] perf: Add irq and exception return branch types Anshuman Khandual 2022-03-14 5:58 ` Anshuman Khandual 2022-03-14 5:58 ` [PATCH V3 02/10] perf: Add system error and not in transaction " Anshuman Khandual 2022-03-14 5:58 ` Anshuman Khandual 2022-03-14 5:58 ` [PATCH V3 03/10] perf: Extend branch type classification Anshuman Khandual 2022-03-14 5:58 ` Anshuman Khandual 2022-03-14 5:58 ` [PATCH V3 04/10] perf: Capture branch privilege information Anshuman Khandual 2022-03-14 5:58 ` Anshuman Khandual 2022-03-14 5:58 ` [PATCH V3 05/10] perf: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform Anshuman Khandual 2022-03-14 5:58 ` Anshuman Khandual 2022-03-14 8:37 ` kernel test robot 2022-03-14 8:37 ` kernel test robot 2022-03-14 10:48 ` Anshuman Khandual 2022-03-14 10:48 ` Anshuman Khandual 2022-03-14 10:48 ` Anshuman Khandual 2022-03-14 15:15 ` kernel test robot 2022-03-14 15:15 ` kernel test robot 2022-03-14 5:58 ` [PATCH V3 06/10] perf/tools: Add irq and exception return branch types Anshuman Khandual 2022-03-14 5:58 ` Anshuman Khandual 2022-03-14 5:58 ` [PATCH V3 07/10] perf/tools: Add system error and not in transaction " Anshuman Khandual 2022-03-14 5:58 ` Anshuman Khandual 2022-03-14 5:58 ` [PATCH V3 08/10] perf/tools: Extend branch type classification Anshuman Khandual 2022-03-14 5:58 ` Anshuman Khandual 2022-03-14 5:58 ` [PATCH V3 09/10] perf/tools: Add branch privilege information request flag Anshuman Khandual 2022-03-14 5:58 ` Anshuman Khandual 2022-03-14 5:58 ` [PATCH V3 10/10] perf/tools: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform Anshuman Khandual 2022-03-14 5:58 ` Anshuman Khandual
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