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Subject[tip: perf/core] perf: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform
The following commit has been merged into the perf/core branch of tip:

Commit-ID: 3051ee34ccb5a821bc46ef06639ff275e9c810b7
Gitweb: https://git.kernel.org/tip/3051ee34ccb5a821bc46ef06639ff275e9c810b7
Author: Anshuman Khandual <anshuman.khandual@arm.com>
AuthorDate: Wed, 24 Aug 2022 10:18:18 +05:30
Committer: Peter Zijlstra <peterz@infradead.org>
CommitterDate: Sat, 27 Aug 2022 00:05:47 +02:00

perf: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform

BRBE captured branch types will overflow perf_branch_entry.type and generic
branch types in perf_branch_entry.new_type. So override each available arch
specific branch type in the following manner to comprehensively process all
reported branch types in BRBE.

PERF_BR_ARM64_FIQ PERF_BR_NEW_ARCH_1
PERF_BR_ARM64_DEBUG_HALT PERF_BR_NEW_ARCH_2
PERF_BR_ARM64_DEBUG_EXIT PERF_BR_NEW_ARCH_3
PERF_BR_ARM64_DEBUG_INST PERF_BR_NEW_ARCH_4
PERF_BR_ARM64_DEBUG_DATA PERF_BR_NEW_ARCH_5

Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: James Clark <james.clark@arm.com>
Link: https://lkml.kernel.org/r/20220824044822.70230-5-anshuman.khandual@arm.com
---
include/uapi/linux/perf_event.h | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index 1a258d4..dca1658 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -293,6 +293,12 @@ enum {
PERF_BR_PRIV_HV = 3,
};

+#define PERF_BR_ARM64_FIQ PERF_BR_NEW_ARCH_1
+#define PERF_BR_ARM64_DEBUG_HALT PERF_BR_NEW_ARCH_2
+#define PERF_BR_ARM64_DEBUG_EXIT PERF_BR_NEW_ARCH_3
+#define PERF_BR_ARM64_DEBUG_INST PERF_BR_NEW_ARCH_4
+#define PERF_BR_ARM64_DEBUG_DATA PERF_BR_NEW_ARCH_5
+
#define PERF_SAMPLE_BRANCH_PLM_ALL \
(PERF_SAMPLE_BRANCH_USER|\
PERF_SAMPLE_BRANCH_KERNEL|\
\
 
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