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[POWERPC] Make walk_memory_resource available with MEMORY_HOTPLUG=n

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The ehea driver was recently changed[1] to use walk_memory_resource() to
detect the system's memory layout.  However, walk_memory_resource() is
available only when memory hotplug is enabled.  So CONFIG_EHEA was
made to depend on MEMORY_HOTPLUG [2], but it is inappropriate for a
network driver to have such a dependency.

Make the declaration of walk_memory_resource() and its powerpc
implementation (ehea is powerpc-specific) unconditionally available.

[1] 48cfb14f8b
    "ehea: Add DLPAR memory remove support"

[2] fb7b6ca2b6
    "ehea: Add dependency to Kconfig"

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Acked-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Nathan Lynch 2008-06-04 08:30:54 +10:00 committed by Paul Mackerras
parent 420b5eeaee
commit 0d5799449f
2 changed files with 9 additions and 10 deletions
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3
arch/powerpc/mm/mem.c
View File

@ -151,6 +151,7 @@ out:
return ret;
}
#endif /* CONFIG_MEMORY_HOTREMOVE */
#endif /* CONFIG_MEMORY_HOTPLUG */
/*
* walk_memory_resource() needs to make sure there is no holes in a given
@ -184,8 +185,6 @@ walk_memory_resource(unsigned long start_pfn, unsigned long nr_pages, void *arg,
}
EXPORT_SYMBOL_GPL(walk_memory_resource);
#endif /* CONFIG_MEMORY_HOTPLUG */
void show_mem(void)
{
unsigned long total = 0, reserved = 0;

16
include/linux/memory_hotplug.h
View File

@ -77,14 +77,6 @@ extern int __add_pages(struct zone *zone, unsigned long start_pfn,
extern int __remove_pages(struct zone *zone, unsigned long start_pfn,
unsigned long nr_pages);
/*
* Walk through all memory which is registered as resource.
* arg is (start_pfn, nr_pages, private_arg_pointer)
*/
extern int walk_memory_resource(unsigned long start_pfn,
unsigned long nr_pages, void *arg,
int (*func)(unsigned long, unsigned long, void *));
#ifdef CONFIG_NUMA
extern int memory_add_physaddr_to_nid(u64 start);
#else
@ -199,6 +191,14 @@ static inline void register_page_bootmem_info_node(struct pglist_data *pgdat)
#endif /* ! CONFIG_MEMORY_HOTPLUG */
/*
* Walk through all memory which is registered as resource.
* arg is (start_pfn, nr_pages, private_arg_pointer)
*/
extern int walk_memory_resource(unsigned long start_pfn,
unsigned long nr_pages, void *arg,
int (*func)(unsigned long, unsigned long, void *));
extern int add_memory(int nid, u64 start, u64 size);
extern int arch_add_memory(int nid, u64 start, u64 size);
extern int remove_memory(u64 start, u64 size);