alloc: Add Kconfig option to call rballoc_align() from mod_alloc_align()

Enabling this option will cause mod_alloc_align() to use
rballoc_aling() instead of rmalloc_align(). The significant difference
between these functions is that rballoc uses virtual heap if its
enabled, rmalloc does not.

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

Author: Jyri Sarha

src/audio/module_adapter/module/generic.c

@@ -185,8 +185,11 @@ void *mod_alloc_align(struct processing_module *mod, uint32_t size, uint32_t ali
 	}
 
 	/* Allocate memory for module */
+#if CONFIG_MOD_ALLOC_USE_RBALLOC
+	ptr = rballoc_align(SOF_MEM_FLAG_USER, size, alignment);
+#else
 	ptr = rmalloc_align(SOF_MEM_FLAG_USER, size, alignment);
-
+#endif
 	if (!ptr) {
 		comp_err(mod->dev, "Failed to alloc %d bytes %d alignment for comp %x.",
 			 size, alignment, dev_comp_id(mod->dev));

zephyr/Kconfig

@@ -159,6 +159,14 @@ config VIRTUAL_HEAP
 	  Enabling this option will use the virtual memory heap allocator to allocate buffers.
 	  It is based on a set of buffers whose size is predetermined.
 
+config MOD_ALLOC_USE_RBALLOC
+	bool "Module API mod_alloc should use rballoc, not rmalloc"
+	help
+	  Enabling this option will cause mod_alloc_align() to use
+	  rballoc_aling() instead of rmalloc_align(). The significant
+	  difference between these functions is that rballoc uses
+	  virtual heap if its enabled, rmalloc does not.
+
 config STACK_SIZE_EDF
 	int "EDF scheduler stack size"
 	default 8192