drc: move logging context to the base image

Logging context can be accessed from the deferred logging
thread. Therefore it must be always available to avoid
access to unmapped memory when an LLEXT module is unloaded.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>

src/audio/drc/CMakeLists.txt

@@ -1,6 +1,9 @@
-add_local_sources(sof drc.c)
-add_local_sources(sof drc_generic.c)
-add_local_sources(sof drc_hifi3.c)
-add_local_sources(sof drc_hifi4.c)
-add_local_sources(sof drc_math_generic.c)
-add_local_sources(sof drc_math_hifi3.c)
+add_local_sources(sof
+	drc.c
+	drc_generic.c
+	drc_hifi3.c
+	drc_hifi4.c
+	drc_math_generic.c
+	drc_math_hifi3.c
+	drc_log.c
+)

src/audio/drc/drc.c

@@ -36,11 +36,10 @@
 #include "drc.h"
 #include "drc_algorithm.h"
 
-LOG_MODULE_REGISTER(drc, CONFIG_SOF_LOG_LEVEL);
+LOG_MODULE_DECLARE(drc, CONFIG_SOF_LOG_LEVEL);
 
-SOF_DEFINE_REG_UUID(drc);
-
-DECLARE_TR_CTX(drc_tr, SOF_UUID(drc_uuid), LOG_LEVEL_INFO);
+extern const struct sof_uuid drc_uuid;
+extern struct tr_ctx drc_tr;
 
 void drc_reset_state(struct drc_state *state)
 {

src/audio/drc/drc_log.c

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: BSD-3-Clause
+//
+// Copyright(c) 2024 Intel Corporation.
+
+#include <rtos/symbol.h>
+#include <sof/lib/uuid.h>
+#include <sof/trace/trace.h>
+#include <user/trace.h>
+
+SOF_DEFINE_REG_UUID(drc);
+LOG_MODULE_REGISTER(drc, CONFIG_SOF_LOG_LEVEL);
+DECLARE_TR_CTX(drc_tr, SOF_UUID(drc_uuid), LOG_LEVEL_INFO);
+EXPORT_SYMBOL(drc_tr);
+EXPORT_SYMBOL(drc_uuid);
+EXPORT_SYMBOL(log_const_drc);

zephyr/CMakeLists.txt

@@ -755,6 +755,12 @@ elseif(CONFIG_COMP_DRC)
 	)
 endif()
 
+if(NOT CONFIG_COMP_DRC STREQUAL "n")
+	zephyr_library_sources(
+		${SOF_AUDIO_PATH}/drc/drc_log.c
+	)
+endif()
+
 zephyr_library_sources_ifdef(CONFIG_COMP_MULTIBAND_DRC
 	${SOF_AUDIO_PATH}/multiband_drc/multiband_drc.c
 	${SOF_AUDIO_PATH}/multiband_drc/multiband_drc_generic.c