From: Anshuman Khandual <anshuman.khandual@arm.com> To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-arm-kernel@lists.infradead.org, peterz@infradead.org, acme@kernel.org, mark.rutland@arm.com, will@kernel.org, catalin.marinas@arm.com Cc: Anshuman Khandual <anshuman.khandual@arm.com> Subject: [PATCH V3 3/7] arm64/perf: Update struct pmu_hw_events for BRBE Date: Thu, 29 Sep 2022 13:28:53 +0530 [thread overview] Message-ID: <20220929075857.158358-4-anshuman.khandual@arm.com> (raw) In-Reply-To: <20220929075857.158358-1-anshuman.khandual@arm.com> A single perf event instance BRBE related contexts and data will be tracked in struct pmu_hw_events. Hence update the structure to accommodate required details related to BRBE. Cc: Will Deacon <will@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> --- drivers/perf/arm_pmu.c | 1 + include/linux/perf/arm_pmu.h | 26 ++++++++++++++++++++++++++ 2 files changed, 27 insertions(+) diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c index 59d3980b8ca2..16fda9a1229f 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -905,6 +905,7 @@ static struct arm_pmu *__armpmu_alloc(gfp_t flags) events = per_cpu_ptr(pmu->hw_events, cpu); raw_spin_lock_init(&events->pmu_lock); + events->branches = kmalloc(sizeof(struct brbe_records), flags); events->percpu_pmu = pmu; } diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h index 3d427ac0ca45..ffce43ceb670 100644 --- a/include/linux/perf/arm_pmu.h +++ b/include/linux/perf/arm_pmu.h @@ -43,6 +43,16 @@ }, \ } +/* + * Maximum branch records in BRBE + */ +#define BRBE_MAX_ENTRIES 64 + +struct brbe_records { + struct perf_branch_stack brbe_stack; + struct perf_branch_entry brbe_entries[BRBE_MAX_ENTRIES]; +}; + /* The events for a given PMU register set. */ struct pmu_hw_events { /* @@ -69,6 +79,22 @@ struct pmu_hw_events { struct arm_pmu *percpu_pmu; int irq; + + /* Detected BRBE attributes */ + bool v1p1; + int brbe_cc; + int brbe_nr; + + /* Evaluated BRBE configuration */ + u64 brbfcr; + u64 brbcr; + + /* Tracked BRBE context */ + unsigned int brbe_users; + void *brbe_context; + + /* Captured BRBE buffer - copied as is into perf_sample_data */ + struct brbe_records *branches; }; enum armpmu_attr_groups { -- 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, linux-arm-kernel@lists.infradead.org, peterz@infradead.org, acme@kernel.org, mark.rutland@arm.com, will@kernel.org, catalin.marinas@arm.com Cc: Anshuman Khandual <anshuman.khandual@arm.com> Subject: [PATCH V3 3/7] arm64/perf: Update struct pmu_hw_events for BRBE Date: Thu, 29 Sep 2022 13:28:53 +0530 [thread overview] Message-ID: <20220929075857.158358-4-anshuman.khandual@arm.com> (raw) In-Reply-To: <20220929075857.158358-1-anshuman.khandual@arm.com> A single perf event instance BRBE related contexts and data will be tracked in struct pmu_hw_events. Hence update the structure to accommodate required details related to BRBE. Cc: Will Deacon <will@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> --- drivers/perf/arm_pmu.c | 1 + include/linux/perf/arm_pmu.h | 26 ++++++++++++++++++++++++++ 2 files changed, 27 insertions(+) diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c index 59d3980b8ca2..16fda9a1229f 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -905,6 +905,7 @@ static struct arm_pmu *__armpmu_alloc(gfp_t flags) events = per_cpu_ptr(pmu->hw_events, cpu); raw_spin_lock_init(&events->pmu_lock); + events->branches = kmalloc(sizeof(struct brbe_records), flags); events->percpu_pmu = pmu; } diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h index 3d427ac0ca45..ffce43ceb670 100644 --- a/include/linux/perf/arm_pmu.h +++ b/include/linux/perf/arm_pmu.h @@ -43,6 +43,16 @@ }, \ } +/* + * Maximum branch records in BRBE + */ +#define BRBE_MAX_ENTRIES 64 + +struct brbe_records { + struct perf_branch_stack brbe_stack; + struct perf_branch_entry brbe_entries[BRBE_MAX_ENTRIES]; +}; + /* The events for a given PMU register set. */ struct pmu_hw_events { /* @@ -69,6 +79,22 @@ struct pmu_hw_events { struct arm_pmu *percpu_pmu; int irq; + + /* Detected BRBE attributes */ + bool v1p1; + int brbe_cc; + int brbe_nr; + + /* Evaluated BRBE configuration */ + u64 brbfcr; + u64 brbcr; + + /* Tracked BRBE context */ + unsigned int brbe_users; + void *brbe_context; + + /* Captured BRBE buffer - copied as is into perf_sample_data */ + struct brbe_records *branches; }; enum armpmu_attr_groups { -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-09-29 7:59 UTC|newest] Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-09-29 7:58 [PATCH V3 0/7] arm64/perf: Enable branch stack sampling Anshuman Khandual 2022-09-29 7:58 ` Anshuman Khandual 2022-09-29 7:58 ` [PATCH V3 1/7] arm64/perf: Add BRBE registers and fields Anshuman Khandual 2022-09-29 7:58 ` Anshuman Khandual 2022-09-29 11:29 ` Mark Brown 2022-09-29 11:29 ` Mark Brown 2022-09-30 4:07 ` Anshuman Khandual 2022-09-30 4:07 ` Anshuman Khandual 2022-09-29 7:58 ` [PATCH V3 2/7] arm64/perf: Update struct arm_pmu for BRBE Anshuman Khandual 2022-09-29 7:58 ` Anshuman Khandual 2022-09-29 7:58 ` Anshuman Khandual [this message] 2022-09-29 7:58 ` [PATCH V3 3/7] arm64/perf: Update struct pmu_hw_events " Anshuman Khandual 2022-09-29 7:58 ` [PATCH V3 4/7] driver/perf/arm_pmu_platform: Add support for BRBE attributes detection Anshuman Khandual 2022-09-29 7:58 ` Anshuman Khandual 2022-10-06 13:37 ` James Clark 2022-10-06 13:37 ` James Clark 2022-10-10 14:17 ` James Clark 2022-10-10 14:17 ` James Clark 2022-10-11 9:21 ` Anshuman Khandual 2022-10-11 9:21 ` Anshuman Khandual 2022-10-12 7:50 ` Anshuman Khandual 2022-10-12 7:50 ` Anshuman Khandual 2022-10-11 9:16 ` Anshuman Khandual 2022-10-11 9:16 ` Anshuman Khandual 2022-09-29 7:58 ` [PATCH V3 5/7] arm64/perf: Drive BRBE from perf event states Anshuman Khandual 2022-09-29 7:58 ` Anshuman Khandual 2022-09-29 7:58 ` [PATCH V3 6/7] arm64/perf: Add BRBE driver Anshuman Khandual 2022-09-29 7:58 ` Anshuman Khandual 2022-09-29 7:58 ` [PATCH V3 7/7] arm64/perf: Enable branch stack sampling Anshuman Khandual 2022-09-29 7:58 ` Anshuman Khandual 2022-10-10 13:55 ` James Clark 2022-10-10 13:55 ` James Clark 2022-10-10 15:48 ` Suzuki K Poulose 2022-10-10 15:48 ` Suzuki K Poulose 2022-10-11 9:27 ` Anshuman Khandual 2022-10-11 9:27 ` Anshuman Khandual
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