From: Guanshun Liu <lgs156412@gmail.com>
To: rppt@kernel.org
Cc: akpm@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, Guanshun Liu <lgs156412@gmail.com>
Subject: [PATCH v2] memblock: export memblock_free() to free reserved memory.
Date: Tue, 25 Jun 2024 20:16:52 +0800 [thread overview]
Message-ID: <20240625121652.1189095-1-lgs156412@gmail.com> (raw)
On architectures that support the preservation of memblock metadata
after __init, allow drivers to call memblock_free() to free a
reservation configured in dts. This is a hack to support the
freeing of bootsplash reservations passed to Linux by the bootloader.
Signed-off-by: Guanshun Liu <lgs156412@gmail.com>
---
mm/memblock.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/mm/memblock.c b/mm/memblock.c
index 6d18485571b4..20e7f81fc076 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -848,6 +848,9 @@ void __init_memblock memblock_free(void *ptr, size_t size)
if (ptr)
memblock_phys_free(__pa(ptr), size);
}
+#ifdef CONFIG_ARCH_KEEP_MEMBLOCK
+EXPORT_SYMBOL_GPL(memblock_free);
+#endif
/**
* memblock_phys_free - free boot memory block
--
2.25.1
next reply other threads:[~2024-06-25 12:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-25 12:16 Guanshun Liu [this message]
2024-06-25 15:53 ` [PATCH v2] memblock: export memblock_free() to free reserved memory Christoph Hellwig
2024-06-26 5:02 ` Mike Rapoport
2024-07-01 8:31 ` liangxi Liu
2024-07-01 8:46 ` liangxi Liu
2024-07-12 8:04 ` liangxi Liu
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