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Subject[PATCH v3] mm/memblock: add missing include <linux/bootmem.h>
Date
Commit 26f09e9b3a06 ("mm/memblock: add memblock memory allocation apis")
introduced two new function definitions:

memblock_virt_alloc_try_nid_nopanic()
memblock_virt_alloc_try_nid()

Commit ea1f5f3712af ("mm: define memblock_virt_alloc_try_nid_raw")
introduced the following function definition:

memblock_virt_alloc_try_nid_raw()

This commit adds an include of header file <linux/bootmem.h> to provide
the missing function prototypes. Silence the following gcc warning
(W=1):

mm/memblock.c:1334:15: warning: no previous prototype for `memblock_virt_alloc_try_nid_raw' [-Wmissing-prototypes]
mm/memblock.c:1371:15: warning: no previous prototype for `memblock_virt_alloc_try_nid_nopanic' [-Wmissing-prototypes]
mm/memblock.c:1407:15: warning: no previous prototype for `memblock_virt_alloc_try_nid' [-Wmissing-prototypes]

Also adds #ifdef blockers to prevent compilation failure on mips/ia64 where
CONFIG_NO_BOOTMEM=n as could be seen in commit commit 6cc22dc08a24 ("revert
"mm/memblock: add missing include <linux/bootmem.h>"").

Because Makefile already does:

obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o

The #ifdef has been simplified from:

#if defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM)

to simply:

#if defined(CONFIG_NO_BOOTMEM)

Suggested-by: Tony Luck <tony.luck@intel.com>
Suggested-by: Michal Hocko <mhocko@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
---
v3: Add missing reference to commit 6cc22dc08a24
v2: Simplify #ifdef

mm/memblock.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/mm/memblock.c b/mm/memblock.c
index 03d48d8835ba..611a970ac902 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -20,6 +20,7 @@
#include <linux/kmemleak.h>
#include <linux/seq_file.h>
#include <linux/memblock.h>
+#include <linux/bootmem.h>

#include <asm/sections.h>
#include <linux/io.h>
@@ -1224,6 +1225,7 @@ phys_addr_t __init memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, i
return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
}

+#if defined(CONFIG_NO_BOOTMEM)
/**
* memblock_virt_alloc_internal - allocate boot memory block
* @size: size of memory block to be allocated in bytes
@@ -1431,6 +1433,7 @@ void * __init memblock_virt_alloc_try_nid(
(u64)max_addr);
return NULL;
}
+#endif

/**
* __memblock_free_early - free boot memory block
--
2.11.0
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