llext: remove superfluous symbol exports

lyakh · lyakh · commit 76e94ca70def · 2026-01-29T19:18:17.000+01:00
I've checked all the external symbols in currently built LLEXT
modules and probe and compared them to all the exported symbols. This
commit removes most of needlessly exported symbols, except
mathematics functions.

Signed-off-by: Guennadi Liakhovetski &lt;guennadi.liakhovetski@linux.intel.com&gt;
diff --git a/src/audio/component.c b/src/audio/component.c
@@ -53,7 +53,6 @@ int comp_register(struct comp_driver_info *drv)
 
 	return 0;
 }
-EXPORT_SYMBOL(comp_register);
 
 void comp_unregister(struct comp_driver_info *drv)
 {
diff --git a/src/audio/drc/drc_log.c b/src/audio/drc/drc_log.c
@@ -10,6 +10,4 @@
 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);
diff --git a/src/audio/module_adapter/module/generic.c b/src/audio/module_adapter/module/generic.c
@@ -714,7 +714,6 @@ void mod_free_all(struct processing_module *mod)
 	/* Make sure resource lists and accounting are reset */
 	mod_resource_init(mod);
 }
-EXPORT_SYMBOL(mod_free_all);
 
 int module_free(struct processing_module *mod)
 {
@@ -950,4 +949,3 @@ uint32_t module_get_deadline(struct processing_module *mod)
 
 	return deadline;
 }
-EXPORT_SYMBOL(module_get_deadline);
diff --git a/src/audio/module_adapter/module_adapter.c b/src/audio/module_adapter/module_adapter.c
@@ -30,7 +30,6 @@
 #endif
 #include <rtos/interrupt.h>
 #include <rtos/kernel.h>
-#include <rtos/symbol.h>
 #include <limits.h>
 #include <stdint.h>
 
@@ -339,7 +338,6 @@ struct comp_dev *module_adapter_new_ext(const struct comp_driver *drv,
 
 	return NULL;
 }
-EXPORT_SYMBOL(module_adapter_new);
 
 #if CONFIG_ZEPHYR_DP_SCHEDULER
 static void module_adapter_calculate_dp_period(struct comp_dev *dev)
@@ -685,7 +683,6 @@ int module_adapter_prepare(struct comp_dev *dev)
 	mod->input_buffers = NULL;
 	return ret;
 }
-EXPORT_SYMBOL(module_adapter_prepare);
 
 int module_adapter_params(struct comp_dev *dev, struct sof_ipc_stream_params *params)
 {
@@ -725,7 +722,6 @@ int module_adapter_params(struct comp_dev *dev, struct sof_ipc_stream_params *pa
 
 	return 0;
 }
-EXPORT_SYMBOL(module_adapter_params);
 
 /*
  * Function to copy from source buffer to the module buffer
@@ -1340,7 +1336,6 @@ int module_adapter_copy(struct comp_dev *dev)
 	comp_err(dev, "unknown processing_data_type");
 	return -EINVAL;
 }
-EXPORT_SYMBOL(module_adapter_copy);
 
 int module_adapter_trigger(struct comp_dev *dev, int cmd)
 {
@@ -1378,7 +1373,6 @@ int module_adapter_trigger(struct comp_dev *dev, int cmd)
 
 	return module_adapter_set_state(mod, dev, cmd);
 }
-EXPORT_SYMBOL(module_adapter_trigger);
 
 int module_adapter_reset(struct comp_dev *dev)
 {
@@ -1426,7 +1420,6 @@ int module_adapter_reset(struct comp_dev *dev)
 
 	return comp_set_state(dev, COMP_TRIGGER_RESET);
 }
-EXPORT_SYMBOL(module_adapter_reset);
 
 void module_adapter_free(struct comp_dev *dev)
 {
@@ -1469,7 +1462,6 @@ void module_adapter_free(struct comp_dev *dev)
 
 	module_adapter_mem_free(mod);
 }
-EXPORT_SYMBOL(module_adapter_free);
 
 size_t module_adapter_heap_usage(struct processing_module *mod, size_t *hwm)
 {
@@ -1480,7 +1472,6 @@ size_t module_adapter_heap_usage(struct processing_module *mod, size_t *hwm)
 
 	return res->heap_usage;
 }
-EXPORT_SYMBOL(module_adapter_heap_usage);
 
 /*
  * \brief Get DAI hw params
@@ -1503,7 +1494,6 @@ int module_adapter_get_hw_params(struct comp_dev *dev, struct sof_ipc_stream_par
 
 	return -EOPNOTSUPP;
 }
-EXPORT_SYMBOL(module_adapter_get_hw_params);
 
 /*
  * \brief Get stream position
@@ -1524,7 +1514,6 @@ int module_adapter_position(struct comp_dev *dev, struct sof_ipc_stream_posn *po
 
 	return -EOPNOTSUPP;
 }
-EXPORT_SYMBOL(module_adapter_position);
 
 /*
  * \brief DAI timestamp configure
@@ -1544,7 +1533,6 @@ int module_adapter_ts_config_op(struct comp_dev *dev)
 
 	return -EOPNOTSUPP;
 }
-EXPORT_SYMBOL(module_adapter_ts_config_op);
 
 /*
  * \brief DAI timestamp start
@@ -1564,7 +1552,6 @@ int module_adapter_ts_start_op(struct comp_dev *dev)
 
 	return -EOPNOTSUPP;
 }
-EXPORT_SYMBOL(module_adapter_ts_start_op);
 
 /*
  * \brief DAI timestamp stop
@@ -1584,7 +1571,6 @@ int module_adapter_ts_stop_op(struct comp_dev *dev)
 
 	return -EOPNOTSUPP;
 }
-EXPORT_SYMBOL(module_adapter_ts_stop_op);
 
 /*
  * \brief Get DAI timestamp
@@ -1609,4 +1595,3 @@ int module_adapter_ts_get_op(struct comp_dev *dev, struct timestamp_data *tsd)
 
 	return -EOPNOTSUPP;
 }
-EXPORT_SYMBOL(module_adapter_ts_get_op);
diff --git a/src/audio/module_adapter/module_adapter_ipc4.c b/src/audio/module_adapter/module_adapter_ipc4.c
@@ -211,7 +211,6 @@ int module_set_large_config(struct comp_dev *dev, uint32_t param_id, bool first_
 						    NULL, 0);
 	return 0;
 }
-EXPORT_SYMBOL(module_set_large_config);
 
 int module_get_large_config(struct comp_dev *dev, uint32_t param_id, bool first_block,
 			    bool last_block, uint32_t *data_offset_size, char *data)
@@ -243,7 +242,6 @@ int module_get_large_config(struct comp_dev *dev, uint32_t param_id, bool first_
 	 */
 	return -EIO;
 }
-EXPORT_SYMBOL(module_get_large_config);
 
 int module_adapter_get_attribute(struct comp_dev *dev, uint32_t type, void *value)
 {
@@ -265,7 +263,6 @@ int module_adapter_get_attribute(struct comp_dev *dev, uint32_t type, void *valu
 
 	return 0;
 }
-EXPORT_SYMBOL(module_adapter_get_attribute);
 
 int module_adapter_set_attribute(struct comp_dev *dev, uint32_t type, void *value)
 {
@@ -283,7 +280,6 @@ int module_adapter_set_attribute(struct comp_dev *dev, uint32_t type, void *valu
 
 	return 0;
 }
-EXPORT_SYMBOL(module_adapter_set_attribute);
 
 static bool module_adapter_multi_sink_source_prepare(struct comp_dev *dev)
 {
@@ -368,7 +364,6 @@ int module_adapter_bind(struct comp_dev *dev, struct bind_info *bind_data)
 
 	return 0;
 }
-EXPORT_SYMBOL(module_adapter_bind);
 
 int module_adapter_unbind(struct comp_dev *dev, struct bind_info *unbind_data)
 {
@@ -383,7 +378,6 @@ int module_adapter_unbind(struct comp_dev *dev, struct bind_info *unbind_data)
 
 	return 0;
 }
-EXPORT_SYMBOL(module_adapter_unbind);
 
 uint64_t module_adapter_get_total_data_processed(struct comp_dev *dev,
 						 uint32_t stream_no, bool input)
@@ -399,7 +393,6 @@ uint64_t module_adapter_get_total_data_processed(struct comp_dev *dev,
 	else
 		return mod->total_data_consumed;
 }
-EXPORT_SYMBOL(module_adapter_get_total_data_processed);
 
 int module_adapter_sink_src_prepare(struct comp_dev *dev)
 {
diff --git a/src/debug/debug_stream/debug_stream_text_msg.c b/src/debug/debug_stream/debug_stream_text_msg.c
@@ -33,5 +33,3 @@ void ds_msg(const char *format, ...)
 						  sizeof(buf.msg.hdr.data[0]));
 	debug_stream_slot_send_record(&buf.msg.hdr);
 }
-EXPORT_SYMBOL(ds_msg);
-
diff --git a/src/ipc/ipc4/helper.c b/src/ipc/ipc4/helper.c
@@ -1334,7 +1334,6 @@ void ipc4_audio_format_to_stream_params(const struct ipc4_audio_format *audio_fm
 	for (i = 0; i < SOF_IPC_MAX_CHANNELS; i++)
 		params->chmap[i] = (audio_fmt->ch_map >> i * 4) & 0xf;
 }
-EXPORT_SYMBOL(ipc4_audio_format_to_stream_params);
 
 void ipc4_base_module_cfg_to_stream_params(const struct ipc4_base_module_cfg *base_cfg,
 					   struct sof_ipc_stream_params *params)
diff --git a/src/lib/dma.c b/src/lib/dma.c
@@ -17,7 +17,6 @@
 #include <sof/lib/memory.h>
 #include <sof/lib/uuid.h>
 #include <rtos/spinlock.h>
-#include <rtos/symbol.h>
 #include <sof/trace/trace.h>
 #include <ipc/topology.h>
 #include <user/trace.h>
@@ -168,8 +167,6 @@ static int dma_init(struct sof_dma *dma)
 
 	return 0;
 }
-EXPORT_SYMBOL(z_impl_sof_dma_get);
-EXPORT_SYMBOL(z_impl_sof_dma_put);
 #else
 struct dma *dma_get(uint32_t dir, uint32_t cap, uint32_t dev, uint32_t flags)
 {
@@ -286,8 +283,6 @@ void dma_put(struct dma *dma)
 		dma, dma->sref);
 	k_spin_unlock(&dma->lock, key);
 }
-EXPORT_SYMBOL(dma_get);
-EXPORT_SYMBOL(dma_put);
 #endif
 
 int dma_sg_alloc(struct dma_sg_elem_array *elem_array,
@@ -329,7 +324,6 @@ void dma_sg_free(struct dma_sg_elem_array *elem_array)
 	rfree(elem_array->elems);
 	dma_sg_init(elem_array);
 }
-EXPORT_SYMBOL(dma_sg_free);
 
 int dma_buffer_copy_from(struct comp_buffer *source,
 			 struct comp_buffer *sink,

Original file line number	Diff line number	Diff line change
`@@ -53,7 +53,6 @@ int comp_register(struct comp_driver_info *drv)`
`53`	`53`
`54`	`54`	`return 0;`
`55`	`55`	`}`
`56`		`-EXPORT_SYMBOL(comp_register);`
`57`	`56`
`58`	`57`	`void comp_unregister(struct comp_driver_info *drv)`
`59`	`58`	`{`
Original file line number	Diff line number	Diff line change
`@@ -714,7 +714,6 @@ void mod_free_all(struct processing_module *mod)`
`714`	`714`	`/* Make sure resource lists and accounting are reset */`
`715`	`715`	`mod_resource_init(mod);`
`716`	`716`	`}`
`717`		`-EXPORT_SYMBOL(mod_free_all);`
`718`	`717`
`719`	`718`	`int module_free(struct processing_module *mod)`
`720`	`719`	`{`
`@@ -950,4 +949,3 @@ uint32_t module_get_deadline(struct processing_module *mod)`
`950`	`949`
`951`	`950`	`return deadline;`
`952`	`951`	`}`
`953`		`-EXPORT_SYMBOL(module_get_deadline);`
Original file line number	Diff line number	Diff line change
`@@ -30,7 +30,6 @@`
`30`	`30`	`#endif`
`31`	`31`	`#include <rtos/interrupt.h>`
`32`	`32`	`#include <rtos/kernel.h>`
`33`		`-#include <rtos/symbol.h>`
`34`	`33`	`#include <limits.h>`
`35`	`34`	`#include <stdint.h>`
`36`	`35`
`@@ -339,7 +338,6 @@ struct comp_dev module_adapter_new_ext(const struct comp_driver drv,`
`339`	`338`
`340`	`339`	`return NULL;`
`341`	`340`	`}`
`342`		`-EXPORT_SYMBOL(module_adapter_new);`
`343`	`341`
`344`	`342`	`#if CONFIG_ZEPHYR_DP_SCHEDULER`
`345`	`343`	`static void module_adapter_calculate_dp_period(struct comp_dev *dev)`
`@@ -685,7 +683,6 @@ int module_adapter_prepare(struct comp_dev *dev)`
`685`	`683`	`mod->input_buffers = NULL;`
`686`	`684`	`return ret;`
`687`	`685`	`}`
`688`		`-EXPORT_SYMBOL(module_adapter_prepare);`
`689`	`686`
`690`	`687`	`int module_adapter_params(struct comp_dev dev, struct sof_ipc_stream_params params)`
`691`	`688`	`{`
`@@ -725,7 +722,6 @@ int module_adapter_params(struct comp_dev dev, struct sof_ipc_stream_params pa`
`725`	`722`
`726`	`723`	`return 0;`
`727`	`724`	`}`
`728`		`-EXPORT_SYMBOL(module_adapter_params);`
`729`	`725`
`730`	`726`	`/*`
`731`	`727`	`* Function to copy from source buffer to the module buffer`
`@@ -1340,7 +1336,6 @@ int module_adapter_copy(struct comp_dev *dev)`
`1340`	`1336`	`comp_err(dev, "unknown processing_data_type");`
`1341`	`1337`	`return -EINVAL;`
`1342`	`1338`	`}`
`1343`		`-EXPORT_SYMBOL(module_adapter_copy);`
`1344`	`1339`
`1345`	`1340`	`int module_adapter_trigger(struct comp_dev *dev, int cmd)`
`1346`	`1341`	`{`
`@@ -1378,7 +1373,6 @@ int module_adapter_trigger(struct comp_dev *dev, int cmd)`
`1378`	`1373`
`1379`	`1374`	`return module_adapter_set_state(mod, dev, cmd);`
`1380`	`1375`	`}`
`1381`		`-EXPORT_SYMBOL(module_adapter_trigger);`
`1382`	`1376`
`1383`	`1377`	`int module_adapter_reset(struct comp_dev *dev)`
`1384`	`1378`	`{`
`@@ -1426,7 +1420,6 @@ int module_adapter_reset(struct comp_dev *dev)`
`1426`	`1420`
`1427`	`1421`	`return comp_set_state(dev, COMP_TRIGGER_RESET);`
`1428`	`1422`	`}`
`1429`		`-EXPORT_SYMBOL(module_adapter_reset);`
`1430`	`1423`
`1431`	`1424`	`void module_adapter_free(struct comp_dev *dev)`
`1432`	`1425`	`{`
`@@ -1469,7 +1462,6 @@ void module_adapter_free(struct comp_dev *dev)`
`1469`	`1462`
`1470`	`1463`	`module_adapter_mem_free(mod);`
`1471`	`1464`	`}`
`1472`		`-EXPORT_SYMBOL(module_adapter_free);`
`1473`	`1465`
`1474`	`1466`	`size_t module_adapter_heap_usage(struct processing_module mod, size_t hwm)`
`1475`	`1467`	`{`
`@@ -1480,7 +1472,6 @@ size_t module_adapter_heap_usage(struct processing_module mod, size_t hwm)`
`1480`	`1472`
`1481`	`1473`	`return res->heap_usage;`
`1482`	`1474`	`}`
`1483`		`-EXPORT_SYMBOL(module_adapter_heap_usage);`
`1484`	`1475`
`1485`	`1476`	`/*`
`1486`	`1477`	`* \brief Get DAI hw params`
`@@ -1503,7 +1494,6 @@ int module_adapter_get_hw_params(struct comp_dev *dev, struct sof_ipc_stream_par`
`1503`	`1494`
`1504`	`1495`	`return -EOPNOTSUPP;`
`1505`	`1496`	`}`
`1506`		`-EXPORT_SYMBOL(module_adapter_get_hw_params);`
`1507`	`1497`
`1508`	`1498`	`/*`
`1509`	`1499`	`* \brief Get stream position`
`@@ -1524,7 +1514,6 @@ int module_adapter_position(struct comp_dev dev, struct sof_ipc_stream_posn po`
`1524`	`1514`
`1525`	`1515`	`return -EOPNOTSUPP;`
`1526`	`1516`	`}`
`1527`		`-EXPORT_SYMBOL(module_adapter_position);`
`1528`	`1517`
`1529`	`1518`	`/*`
`1530`	`1519`	`* \brief DAI timestamp configure`
`@@ -1544,7 +1533,6 @@ int module_adapter_ts_config_op(struct comp_dev *dev)`
`1544`	`1533`
`1545`	`1534`	`return -EOPNOTSUPP;`
`1546`	`1535`	`}`
`1547`		`-EXPORT_SYMBOL(module_adapter_ts_config_op);`
`1548`	`1536`
`1549`	`1537`	`/*`
`1550`	`1538`	`* \brief DAI timestamp start`
`@@ -1564,7 +1552,6 @@ int module_adapter_ts_start_op(struct comp_dev *dev)`
`1564`	`1552`
`1565`	`1553`	`return -EOPNOTSUPP;`
`1566`	`1554`	`}`
`1567`		`-EXPORT_SYMBOL(module_adapter_ts_start_op);`
`1568`	`1555`
`1569`	`1556`	`/*`
`1570`	`1557`	`* \brief DAI timestamp stop`
`@@ -1584,7 +1571,6 @@ int module_adapter_ts_stop_op(struct comp_dev *dev)`
`1584`	`1571`
`1585`	`1572`	`return -EOPNOTSUPP;`
`1586`	`1573`	`}`
`1587`		`-EXPORT_SYMBOL(module_adapter_ts_stop_op);`
`1588`	`1574`
`1589`	`1575`	`/*`
`1590`	`1576`	`* \brief Get DAI timestamp`
`@@ -1609,4 +1595,3 @@ int module_adapter_ts_get_op(struct comp_dev dev, struct timestamp_data tsd)`
`1609`	`1595`
`1610`	`1596`	`return -EOPNOTSUPP;`
`1611`	`1597`	`}`
`1612`		`-EXPORT_SYMBOL(module_adapter_ts_get_op);`
Original file line number	Diff line number	Diff line change
`@@ -211,7 +211,6 @@ int module_set_large_config(struct comp_dev *dev, uint32_t param_id, bool first_`
`211`	`211`	`NULL, 0);`
`212`	`212`	`return 0;`
`213`	`213`	`}`
`214`		`-EXPORT_SYMBOL(module_set_large_config);`
`215`	`214`
`216`	`215`	`int module_get_large_config(struct comp_dev *dev, uint32_t param_id, bool first_block,`
`217`	`216`	`bool last_block, uint32_t data_offset_size, char data)`
`@@ -243,7 +242,6 @@ int module_get_large_config(struct comp_dev *dev, uint32_t param_id, bool first_`
`243`	`242`	`*/`
`244`	`243`	`return -EIO;`
`245`	`244`	`}`
`246`		`-EXPORT_SYMBOL(module_get_large_config);`
`247`	`245`
`248`	`246`	`int module_adapter_get_attribute(struct comp_dev dev, uint32_t type, void value)`
`249`	`247`	`{`
`@@ -265,7 +263,6 @@ int module_adapter_get_attribute(struct comp_dev dev, uint32_t type, void valu`
`265`	`263`
`266`	`264`	`return 0;`
`267`	`265`	`}`
`268`		`-EXPORT_SYMBOL(module_adapter_get_attribute);`
`269`	`266`
`270`	`267`	`int module_adapter_set_attribute(struct comp_dev dev, uint32_t type, void value)`
`271`	`268`	`{`
`@@ -283,7 +280,6 @@ int module_adapter_set_attribute(struct comp_dev dev, uint32_t type, void valu`
`283`	`280`
`284`	`281`	`return 0;`
`285`	`282`	`}`
`286`		`-EXPORT_SYMBOL(module_adapter_set_attribute);`
`287`	`283`
`288`	`284`	`static bool module_adapter_multi_sink_source_prepare(struct comp_dev *dev)`
`289`	`285`	`{`
`@@ -368,7 +364,6 @@ int module_adapter_bind(struct comp_dev dev, struct bind_info bind_data)`
`368`	`364`
`369`	`365`	`return 0;`
`370`	`366`	`}`
`371`		`-EXPORT_SYMBOL(module_adapter_bind);`
`372`	`367`
`373`	`368`	`int module_adapter_unbind(struct comp_dev dev, struct bind_info unbind_data)`
`374`	`369`	`{`
`@@ -383,7 +378,6 @@ int module_adapter_unbind(struct comp_dev dev, struct bind_info unbind_data)`
`383`	`378`
`384`	`379`	`return 0;`
`385`	`380`	`}`
`386`		`-EXPORT_SYMBOL(module_adapter_unbind);`
`387`	`381`
`388`	`382`	`uint64_t module_adapter_get_total_data_processed(struct comp_dev *dev,`
`389`	`383`	`uint32_t stream_no, bool input)`
`@@ -399,7 +393,6 @@ uint64_t module_adapter_get_total_data_processed(struct comp_dev *dev,`
`399`	`393`	`else`
`400`	`394`	`return mod->total_data_consumed;`
`401`	`395`	`}`
`402`		`-EXPORT_SYMBOL(module_adapter_get_total_data_processed);`
`403`	`396`
`404`	`397`	`int module_adapter_sink_src_prepare(struct comp_dev *dev)`
`405`	`398`	`{`
Original file line number	Diff line number	Diff line change
`@@ -33,5 +33,3 @@ void ds_msg(const char *format, ...)`
`33`	`33`	`sizeof(buf.msg.hdr.data[0]));`
`34`	`34`	`debug_stream_slot_send_record(&buf.msg.hdr);`
`35`	`35`	`}`
`36`		`-EXPORT_SYMBOL(ds_msg);`
`37`		`-`
Original file line number	Diff line number	Diff line change
`@@ -1334,7 +1334,6 @@ void ipc4_audio_format_to_stream_params(const struct ipc4_audio_format *audio_fm`
`1334`	`1334`	`for (i = 0; i < SOF_IPC_MAX_CHANNELS; i++)`
`1335`	`1335`	`params->chmap[i] = (audio_fmt->ch_map >> i * 4) & 0xf;`
`1336`	`1336`	`}`
`1337`		`-EXPORT_SYMBOL(ipc4_audio_format_to_stream_params);`
`1338`	`1337`
`1339`	`1338`	`void ipc4_base_module_cfg_to_stream_params(const struct ipc4_base_module_cfg *base_cfg,`
`1340`	`1339`	`struct sof_ipc_stream_params *params)`