fix: export memblock_free

AaronDewes · amazingfate · commit b224444a3e25 · 2024-11-12T16:48:32.000+08:00
This is required for drivers/gpu/drm/rockchip/rockchip_drm_logo.c to compile properly as a module. Without this patch, build including rockchip-drm fail for me with ERROR: modpost: "memblock_free" undefined! cherry-picked from https://android.googlesource.com/kernel/common/+/cd5f5cb9fe677466551e44039b31198e7b0dc812%5E%21/
diff --git a/mm/memblock.c b/mm/memblock.c
@@ -875,6 +875,10 @@ int __init_memblock memblock_phys_free(phys_addr_t base, phys_addr_t size)
 	return memblock_remove_range(&memblock.reserved, base, size);
 }
 
+#ifdef CONFIG_ARCH_KEEP_MEMBLOCK
+EXPORT_SYMBOL_GPL(memblock_free);
+#endif
+
 int __init_memblock memblock_reserve(phys_addr_t base, phys_addr_t size)
 {
 	phys_addr_t end = base + size - 1;

Original file line number	Diff line number	Diff line change
`@@ -875,6 +875,10 @@ int __init_memblock memblock_phys_free(phys_addr_t base, phys_addr_t size)`
`875`	`875`	`return memblock_remove_range(&memblock.reserved, base, size);`
`876`	`876`	`}`
`877`	`877`
	`878`	`+#ifdef CONFIG_ARCH_KEEP_MEMBLOCK`
	`879`	`+EXPORT_SYMBOL_GPL(memblock_free);`
	`880`	`+#endif`
	`881`	`+`
`878`	`882`	`int __init_memblock memblock_reserve(phys_addr_t base, phys_addr_t size)`
`879`	`883`	`{`
`880`	`884`	`phys_addr_t end = base + size - 1;`