linux-kernel - [tip: perf/core] perf: Add PERF_BR_NEW_ARCH

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Date:   Mon, 29 Aug 2022 07:49:59 -0000
From:   "tip-bot2 for Anshuman Khandual" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Anshuman Khandual <anshuman.khandual@....com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        James Clark <james.clark@....com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
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:     f4054e522531038354bea5c924f286fdd8ae77b5
Gitweb:        https://git.kernel.org/tip/f4054e522531038354bea5c924f286fdd8ae77b5
Author:        Anshuman Khandual <anshuman.khandual@....com>
AuthorDate:    Wed, 24 Aug 2022 10:18:18 +05:30
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Mon, 29 Aug 2022 09:42:42 +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@....com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: James Clark <james.clark@....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|\