debug_stream: text_msg: throttle repeated assert prints

Add a temporary per-CPU assert counter in assert_print() to limit

duplicate assert messages after an exception dump.

This works around cases where reports_sent_cpu[] alone does not
suppress late assert prints.

Signed-off-by: Jyri Sarha <jyri.sarha@linux.intel.com>

Author: Jyri Sarha

src/debug/debug_stream/debug_stream_text_msg.c

@@ -78,6 +78,7 @@ static void ds_exception_drain(bool flush)
 	if (reports_sent_cpu[cpu] > 0)
 		return;
 
+
 	ds_buf[cpu].msg.hdr.id = DEBUG_STREAM_RECORD_ID_TEXT_MSG;
 	ds_buf[cpu].msg.hdr.size_words =
 		SOF_DIV_ROUND_UP(sizeof(ds_buf[cpu].msg) + ds_pos[cpu],
@@ -144,14 +145,17 @@ static int init_exception_dump_hook(void)
 SYS_INIT(init_exception_dump_hook, APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
 
 #if defined(CONFIG_SOF_DEBUG_STREAM_TEXT_MSG_ASSERT_PRINT)
-
+static int assert_count_cpu[CONFIG_MP_MAX_NUM_CPUS];
 void assert_print(const char *fmt, ...)
 {
 	va_list ap;
 
 	/* Do not print assert after exception has been dumped */
 	if (reports_sent_cpu[arch_proc_id()] > 0)
 		return;
+	/* For unknown reason the above does not work, and there is assert prints after dump */
+	if (assert_count_cpu[arch_proc_id()]++ > 2)
+		return;
 
 	va_start(ap, fmt);