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Subject[PATCH V7 8/8] perf/tools: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform
Date
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@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-perf-users@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.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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