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>,
James Clark <james.clark@arm.com>, Rob Herring <robh@kernel.org>,
Marc Zyngier <maz@kernel.org>, Ingo Molnar <mingo@redhat.com>
Subject: [PATCH V2 3/7] arm64/perf: Update struct pmu_hw_events for BRBE
Date: Thu, 8 Sep 2022 10:40:42 +0530 [thread overview]
Message-ID: <20220908051046.465307-4-anshuman.khandual@arm.com> (raw)
In-Reply-To: <20220908051046.465307-1-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>
---
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 3d427ac0ca45..18e519e4e658 100644
--- a/include/linux/perf/arm_pmu.h
+++ b/include/linux/perf/arm_pmu.h
@@ -43,6 +43,11 @@
}, \
}
+/*
+ * Maximum branch records in BRBE
+ */
+#define BRBE_MAX_ENTRIES 64
+
/* The events for a given PMU register set. */
struct pmu_hw_events {
/*
@@ -69,6 +74,23 @@ 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
next prev parent reply other threads:[~2022-09-08 5:11 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-08 5:10 [PATCH V2 0/7] arm64/perf: Enable branch stack sampling Anshuman Khandual
2022-09-08 5:10 ` [PATCH V2 1/7] arm64/perf: Add register definitions for BRBE Anshuman Khandual
2022-09-12 9:57 ` Mark Brown
2022-09-13 6:24 ` Anshuman Khandual
2022-09-13 11:30 ` Mark Brown
2022-09-08 5:10 ` [PATCH V2 2/7] arm64/perf: Update struct arm_pmu " Anshuman Khandual
2022-09-08 5:10 ` Anshuman Khandual [this message]
[not found] ` <202209082022.6BPdyQn8-lkp@intel.com>
2022-09-09 3:11 ` [PATCH V2 3/7] arm64/perf: Update struct pmu_hw_events " Anshuman Khandual
[not found] ` <202209082259.XDCTMY9g-lkp@intel.com>
2022-09-09 3:14 ` Anshuman Khandual
2022-09-12 10:12 ` Mark Brown
2022-09-13 5:33 ` Anshuman Khandual
2022-09-13 11:43 ` Mark Brown
2022-09-14 3:39 ` Anshuman Khandual
2022-09-14 9:35 ` Mark Brown
2022-09-08 5:10 ` [PATCH V2 4/7] driver/perf/arm_pmu_platform: Add support for BRBE attributes detection Anshuman Khandual
2022-09-08 5:10 ` [PATCH V2 5/7] arm64/perf: Drive BRBE from perf event states Anshuman Khandual
2022-09-08 15:31 ` kernel test robot
2022-09-08 5:10 ` [PATCH V2 6/7] arm64/perf: Add BRBE driver Anshuman Khandual
2022-09-08 9:23 ` kernel test robot
2022-09-08 10:16 ` Anshuman Khandual
2022-09-13 10:39 ` James Clark
2022-09-13 11:38 ` Anshuman Khandual
2022-09-08 5:10 ` [PATCH V2 7/7] arm64/perf: Enable branch stack sampling Anshuman Khandual
2022-09-13 10:55 ` [PATCH V2 0/7] " James Clark
2022-09-13 12:12 ` Anshuman Khandual
2022-09-13 13:12 ` James Clark
2022-09-14 4:43 ` Anshuman Khandual
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