Re: linux-next: build warnings after merge of the final tree (tip treee related)

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On 09/12/2010 09:39 PM, Stephen Rothwell wrote:

> 
> Your patch fixes some of the warnings, but still leaves these for a
> powerpc allnoconfig build:
> 
> WARNING: mm/built-in.o(.text+0x25d80): Section mismatch in reference from the function memblock_double_array() to the function .init.text:memblock_free()
> The function memblock_double_array() references
> the function __init memblock_free().
> This is often because memblock_double_array lacks a __init 
> annotation or the annotation of memblock_free is wrong.
> 
> WARNING: mm/built-in.o(.text+0x26318): Section mismatch in reference from the function memblock_reserve_reserved_regions() to the function .init.text:memblock_reserve()
> The function memblock_reserve_reserved_regions() references
> the function __init memblock_reserve().
> This is often because memblock_reserve_reserved_regions lacks a __init 
> annotation or the annotation of memblock_reserve is wrong.
> 
> WARNING: mm/built-in.o(.text+0x26490): Section mismatch in reference from the function memblock_free_reserved_regions() to the function .init.text:memblock_free()
> The function memblock_free_reserved_regions() references
> the function __init memblock_free().
> This is often because memblock_free_reserved_regions lacks a __init 
> annotation or the annotation of memblock_free is wrong.

v1 already changed them all to __init_memblock, so we should not have those warnings.

> 
> And these for a i386 defconfig build:
> 
> WARNING: mm/built-in.o(.text+0x1e261): Section mismatch in reference from the function memblock_is_memory() to the variable .init.data:memblock
> The function memblock_is_memory() references
> the variable __initdata memblock.
> This is often because memblock_is_memory lacks a __initdata 
> annotation or the annotation of memblock is wrong.
> 
> WARNING: mm/built-in.o(.text+0x1e27f): Section mismatch in reference from the function memblock_is_region_memory() to the variable .init.data:memblock
> The function memblock_is_region_memory() references
> the variable __initdata memblock.
> This is often because memblock_is_region_memory lacks a __initdata 
> annotation or the annotation of memblock is wrong.
> 

you must have old gcc, those functions are not used with i386.

[PATCH -v2] memblock: Fix section mismatch warning

for arches that use memblock other than x86

-v2: more with memblock_is_meory()

Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Yinghai Lu <Yinghai@xxxxxxxxxx>

---
 mm/memblock.c |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

Index: linux-2.6/mm/memblock.c
===================================================================
--- linux-2.6.orig/mm/memblock.c
+++ linux-2.6/mm/memblock.c
@@ -125,8 +125,8 @@ static phys_addr_t __init memblock_find_
 	return MEMBLOCK_ERROR;
 }
 
-static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align,
-					phys_addr_t start, phys_addr_t end)
+static phys_addr_t __init_memblock memblock_find_base(phys_addr_t size,
+			phys_addr_t align, phys_addr_t start, phys_addr_t end)
 {
 	long i;
 
@@ -439,12 +439,12 @@ long __init_memblock memblock_remove(phy
 	return __memblock_remove(&memblock.memory, base, size);
 }
 
-long __init memblock_free(phys_addr_t base, phys_addr_t size)
+long __init_memblock memblock_free(phys_addr_t base, phys_addr_t size)
 {
 	return __memblock_remove(&memblock.reserved, base, size);
 }
 
-long __init memblock_reserve(phys_addr_t base, phys_addr_t size)
+long __init_memblock memblock_reserve(phys_addr_t base, phys_addr_t size)
 {
 	struct memblock_type *_rgn = &memblock.reserved;
 
@@ -671,12 +671,12 @@ int __init memblock_is_reserved(phys_add
 	return memblock_search(&memblock.reserved, addr) != -1;
 }
 
-int memblock_is_memory(phys_addr_t addr)
+int __init_memblock memblock_is_memory(phys_addr_t addr)
 {
 	return memblock_search(&memblock.memory, addr) != -1;
 }
 
-int memblock_is_region_memory(phys_addr_t base, phys_addr_t size)
+int __init_memblock memblock_is_region_memory(phys_addr_t base, phys_addr_t size)
 {
 	int idx = memblock_search(&memblock.reserved, base);
 
@@ -693,7 +693,7 @@ int __init_memblock memblock_is_region_r
 }
 
 
-void __init memblock_set_current_limit(phys_addr_t limit)
+void __init_memblock memblock_set_current_limit(phys_addr_t limit)
 {
 	memblock.current_limit = limit;
 }
--
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