Messages in this thread Patch in this message | | | From | Anshuman Khandual <> | Subject | [RFC V1 04/11] arm64/perf: Update struct pmu_hw_events for BRBE | Date | Mon, 24 Jan 2022 10:00:46 +0530 |
| |
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> --- include/linux/perf/arm_pmu.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)
diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h index c0dd0d6c5883..c4a705d3d054 100644 --- a/include/linux/perf/arm_pmu.h +++ b/include/linux/perf/arm_pmu.h @@ -41,6 +41,11 @@ }, \ } +/* + * Maximum branch records in BRBE + */ +#define BRBE_MAX_ENTRIES 64 + /* The events for a given PMU register set. */ struct pmu_hw_events { /* @@ -67,6 +72,23 @@ 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 perf_branch_stack brbe_stack; + struct perf_branch_entry brbe_entries[BRBE_MAX_ENTRIES]; }; enum armpmu_attr_groups { -- 2.25.1
| |