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Message-Id: <20220824044822.70230-9-anshuman.khandual@arm.com>
Date: Wed, 24 Aug 2022 10:18:22 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
peterz@...radead.org, alexander.shishkin@...ux.intel.com,
jolsa@...hat.com, acme@...nel.org, mark.rutland@....com
Cc: Anshuman Khandual <anshuman.khandual@....com>,
Robin Murphy <robin.murphy@....com>,
Suzuki Poulose <suzuki.poulose@....com>,
James Clark <james.clark@....com>,
Ingo Molnar <mingo@...hat.com>,
Namhyung Kim <namhyung@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Will Deacon <will@...nel.org>,
Catalin Marinas <catalin.marinas@....com>,
linux-arm-kernel@...ts.infradead.org
Subject: [PATCH V7 8/8] perf/tools: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform
This updates the perf tool with arch specific branch type classification
used for BRBE on arm64 platform as added in the kernel earlier.
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Will Deacon <will@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-perf-users@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
---
tools/include/uapi/linux/perf_event.h | 6 ++++++
tools/perf/util/branch.c | 13 +++++++++++++
2 files changed, 19 insertions(+)
diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
index 51168e22f4d8..c2230c5aa1c7 100644
--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h
@@ -282,6 +282,12 @@ 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|\
diff --git a/tools/perf/util/branch.c b/tools/perf/util/branch.c
index 6d962b0a4532..d40776c44b06 100644
--- a/tools/perf/util/branch.c
+++ b/tools/perf/util/branch.c
@@ -45,11 +45,24 @@ const char *branch_new_type_name(int new_type)
"FAULT_ALGN",
"FAULT_DATA",
"FAULT_INST",
+/*
+ * TODO: This switch should happen on 'session->header.env.arch'
+ * instead, because an arm64 platform perf recording could be
+ * opened for analysis on other platforms as well.
+ */
+#ifdef __aarch64__
+ "ARM64_FIQ",
+ "ARM64_DEBUG_HALT",
+ "ARM64_DEBUG_EXIT",
+ "ARM64_DEBUG_INST",
+ "ARM64_DEBUG_DATA"
+#else
"ARCH_1",
"ARCH_2",
"ARCH_3",
"ARCH_4",
"ARCH_5"
+#endif
};
if (new_type >= 0 && new_type < PERF_BR_NEW_MAX)
--
2.25.1
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