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* [patch 085/158] mm/sparse.c: mark populate_section_memmap as __meminit
@ 2019-12-01  1:54 akpm
  0 siblings, 0 replies; only message in thread
From: akpm @ 2019-12-01  1:54 UTC (permalink / raw)
  To: akpm, david, gor, heiko.carstens, iii, linux-mm, mm-commits,
	OSalvador, torvalds

From: Ilya Leoshkevich <iii@linux.ibm.com>
Subject: mm/sparse.c: mark populate_section_memmap as __meminit

Building the kernel on s390 with -Og produces the following warning:

WARNING: vmlinux.o(.text+0x28dabe): Section mismatch in reference from the function populate_section_memmap() to the function .meminit.text:__populate_section_memmap()
The function populate_section_memmap() references
the function __meminit __populate_section_memmap().
This is often because populate_section_memmap lacks a __meminit
annotation or the annotation of __populate_section_memmap is wrong.

While -Og is not supported, in theory this might still happen with another
compiler or on another architecture.  So fix this by using the correct
section annotations.

[iii@linux.ibm.com: v2]
  Link: http://lkml.kernel.org/r/20191030151639.41486-1-iii@linux.ibm.com
Link: http://lkml.kernel.org/r/20191028165549.14478-1-iii@linux.ibm.com
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Oscar Salvador <OSalvador@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/sparse.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/mm/sparse.c~mm-sparsec-mark-populate_section_memmap-as-__meminit
+++ a/mm/sparse.c
@@ -647,7 +647,7 @@ void offline_mem_sections(unsigned long
 #endif
 
 #ifdef CONFIG_SPARSEMEM_VMEMMAP
-static struct page *populate_section_memmap(unsigned long pfn,
+static struct page * __meminit populate_section_memmap(unsigned long pfn,
 		unsigned long nr_pages, int nid, struct vmem_altmap *altmap)
 {
 	return __populate_section_memmap(pfn, nr_pages, nid, altmap);
@@ -669,7 +669,7 @@ static void free_map_bootmem(struct page
 	vmemmap_free(start, end, NULL);
 }
 #else
-struct page *populate_section_memmap(unsigned long pfn,
+struct page * __meminit populate_section_memmap(unsigned long pfn,
 		unsigned long nr_pages, int nid, struct vmem_altmap *altmap)
 {
 	struct page *page, *ret;
_


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2019-12-01  1:54 [patch 085/158] mm/sparse.c: mark populate_section_memmap as __meminit akpm

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