@@ -147,6 +147,7 @@ perf-util-y += cs-etm.o
 perf-util-y += cs-etm-decoder/
 endif
 perf-util-y += cs-etm-base.o
+perf-util-y += rvtrace-decoder.o
 
 perf-util-y += parse-branch-options.o
 perf-util-y += dump-insn.o

@@ -54,6 +54,7 @@
 #include "arm-spe.h"
 #include "hisi-ptt.h"
 #include "s390-cpumsf.h"
+#include "rvtrace.h"
 #include "util/mmap.h"
 #include "powerpc-vpadtl.h"
 

@@ -1412,6 +1413,8 @@ int perf_event__process_auxtrace_info(const struct perf_tool *tool __maybe_unuse
 		err = powerpc_vpadtl_process_auxtrace_info(event, session);
 		break;
 	case PERF_AUXTRACE_RISCV_TRACE:
+		err = rvtrace__process_auxtrace_info(event, session);
+		break;
 	case PERF_AUXTRACE_UNKNOWN:
 	default:
 		return -EINVAL;

@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * RISC-V trace Decoder
+ */
+
+#include <errno.h>
+#include <inttypes.h>
+#include "evlist.h"
+#include <internal/lib.h>
+#include "rvtrace.h"
+
+struct rvtrace_decoder {
+	struct auxtrace auxtrace;
+	u32 auxtrace_type;
+	struct perf_session *session;
+	struct machine *machine;
+	u32 pmu_type;
+};
+
+static int rvtrace_process_event(struct perf_session *session __maybe_unused,
+				 union perf_event *event __maybe_unused,
+				 struct perf_sample *sample __maybe_unused,
+				 const struct perf_tool *tool __maybe_unused)
+{
+	return 0;
+}
+
+static int rvtrace_process_auxtrace_event(struct perf_session *session __maybe_unused,
+					  union perf_event *event __maybe_unused,
+					  const struct perf_tool *tool __maybe_unused)
+{
+	return 0;
+}
+
+static int rvtrace_flush(struct perf_session *session __maybe_unused,
+			 const struct perf_tool *tool __maybe_unused)
+{
+	return 0;
+}
+
+static void rvtrace_free_events(struct perf_session *session __maybe_unused)
+{
+}
+
+static void rvtrace_free(struct perf_session *session)
+{
+	struct rvtrace_decoder *ptr = container_of(session->auxtrace, struct rvtrace_decoder,
+					    auxtrace);
+
+	session->auxtrace = NULL;
+	free(ptr);
+}
+
+static bool rvtrace_evsel_is_auxtrace(struct perf_session *session,
+				      struct evsel *evsel)
+{
+	struct rvtrace_decoder *ptr = container_of(session->auxtrace,
+						   struct rvtrace_decoder, auxtrace);
+
+	return evsel->core.attr.type == ptr->pmu_type;
+}
+
+int rvtrace__process_auxtrace_info(union perf_event *event,
+				   struct perf_session *session)
+{
+	struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info;
+	struct rvtrace_decoder *ptr;
+
+	if (auxtrace_info->header.size < RVTRACE_AUXTRACE_PRIV_SIZE +
+	    sizeof(struct perf_record_auxtrace_info))
+		return -EINVAL;
+
+	ptr = zalloc(sizeof(*ptr));
+	if (!ptr)
+		return -ENOMEM;
+
+	ptr->session = session;
+	ptr->machine = &session->machines.host;
+	ptr->auxtrace_type = auxtrace_info->type;
+	ptr->pmu_type = auxtrace_info->priv[0];
+
+	ptr->auxtrace.process_event = rvtrace_process_event;
+	ptr->auxtrace.process_auxtrace_event = rvtrace_process_auxtrace_event;
+	ptr->auxtrace.flush_events = rvtrace_flush;
+	ptr->auxtrace.free_events = rvtrace_free_events;
+	ptr->auxtrace.free = rvtrace_free;
+	ptr->auxtrace.evsel_is_auxtrace = rvtrace_evsel_is_auxtrace;
+	session->auxtrace = &ptr->auxtrace;
+
+	return 0;
+}

@@ -15,4 +15,5 @@
 
 #define RVTRACE_AUXTRACE_PRIV_SIZE	sizeof(u64)
 
+int rvtrace__process_auxtrace_info(union perf_event *event, struct perf_session *session);
 #endif