msm: adsprpc: add ftrace for dspsignal events for perf debugging

Define new ftrace to log dspsignal events like signalling, waiting,
waking up, completing and cancelling wait. These ftraces can be
used in performance debugging of dspqueue overheads.

Change-Id: Iaf5f3df0f7ba3bd3da94f7614724b8f63ca09ed6
Signed-off-by: Thyagarajan Venkatanarayanan <quic_venkatan@quicinc.com>

dsp/fastrpc_trace.h

@@ -391,6 +391,36 @@ TRACE_EVENT(fastrpc_msg,
 	TP_printk(" %s", __get_str(buf))
 );
 
+TRACE_EVENT(fastrpc_dspsignal,
+
+	TP_PROTO(const char *event, uint32_t signal_id,
+		int state, uint32_t timeout),
+
+	TP_ARGS(event, signal_id, state, timeout),
+
+	TP_STRUCT__entry(
+		__string(buf, event)
+		__field(u32, signal_id)
+		__field(int, state)
+		__field(u32, timeout)
+	),
+
+	TP_fast_assign(
+#if IS_ENABLED(CONFIG_MSM_ADSPRPC_TRUSTED)
+		memcpy(__get_str(buf), (event), (sizeof(event) - 1));
+		__get_str(buf)[sizeof(event) - 1] = '\0';
+#else
+		__assign_str(buf, event);
+#endif
+		__entry->signal_id = signal_id;
+		__entry->state = state;
+		__entry->timeout = timeout;
+	),
+
+	TP_printk("%s for sig id %u, state %d, timeout %u",
+		__get_str(buf), __entry->signal_id, __entry->state, __entry->timeout)
+);
+
 #endif
 
 /* This part must be outside protection */