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Fix node_start/end_pfn() definition for mm/page_cgroup.c 

commit 21a3c96 uses node_start/end_pfn(nid) for detection start/end
of nodes. But, it's not defined in linux/mmzone.h but defined in
/arch/???/include/mmzone.h which is included only under
CONFIG_NEED_MULTIPLE_NODES=y.

Then, we see
  mm/page_cgroup.c: In function 'page_cgroup_init':
  mm/page_cgroup.c:308: error: implicit declaration of function 'node_start_pfn'
  mm/page_cgroup.c:309: error: implicit declaration of function 'node_end_pfn'

So, fixiing page_cgroup.c is an idea...

But node_start_pfn()/node_end_pfn() is a very generic macro and
should be implemented in the same manner for all archs.
(m32r has different implementation...)

This patch removes definitions of node_start/end_pfn() in each archs
and defines a unified one in linux/mmzone.h. It's not under
CONFIG_NEED_MULTIPLE_NODES, now.

A result of macro expansion is here (mm/page_cgroup.c)

for !NUMA
 start_pfn = ((&contig_page_data)->node_start_pfn);
  end_pfn = ({ pg_data_t *__pgdat = (&contig_page_data); __pgdat->node_start_pfn + __pgdat->node_spanned_pages;});

for NUMA (x86-64)
  start_pfn = ((node_data[nid])->node_start_pfn);
  end_pfn = ({ pg_data_t *__pgdat = (node_data[nid]); __pgdat->node_start_pfn + __pgdat->node_spanned_pages;});

Changelog:
 - fixed to avoid using "nid" twice in node_end_pfn() macro.

Reported-and-acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Reported-and-tested-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
KAMEZAWA Hiroyuki 2011-06-16 17:28:07 +09:00 committed by Linus Torvalds
parent af4087e0e6
commit c6830c2260
10 changed files with 8 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/alpha/include/asm/mmzone.h
View File

@ -56,7 +56,6 @@ PLAT_NODE_DATA_LOCALNR(unsigned long p, int n)
* Given a kernel address, find the home node of the underlying memory.
*/
#define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr))
#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
/*
* Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory

8
arch/m32r/include/asm/mmzone.h
View File

@ -14,12 +14,6 @@ extern struct pglist_data *node_data[];
#define NODE_DATA(nid) (node_data[nid])
#define node_localnr(pfn, nid) ((pfn) - NODE_DATA(nid)->node_start_pfn)
#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
#define node_end_pfn(nid) \
({ \
pg_data_t *__pgdat = NODE_DATA(nid); \
__pgdat->node_start_pfn + __pgdat->node_spanned_pages - 1; \
})
#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
/*
@ -44,7 +38,7 @@ static __inline__ int pfn_to_nid(unsigned long pfn)
int node;
for (node = 0 ; node < MAX_NUMNODES ; node++)
if (pfn >= node_start_pfn(node) && pfn <= node_end_pfn(node))
if (pfn >= node_start_pfn(node) && pfn < node_end_pfn(node))
break;
return node;

7
arch/parisc/include/asm/mmzone.h
View File

@ -14,13 +14,6 @@ extern struct node_map_data node_data[];
#define NODE_DATA(nid) (&node_data[nid].pg_data)
#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
#define node_end_pfn(nid) \
({ \
pg_data_t *__pgdat = NODE_DATA(nid); \
__pgdat->node_start_pfn + __pgdat->node_spanned_pages; \
})
/* We have these possible memory map layouts:
* Astro: 0-3.75, 67.75-68, 4-64
* zx1: 0-1, 257-260, 4-256

7
arch/powerpc/include/asm/mmzone.h
View File

@ -38,13 +38,6 @@ u64 memory_hotplug_max(void);
#define memory_hotplug_max() memblock_end_of_DRAM()
#endif
/*
* Following are macros that each numa implmentation must define.
*/
#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
#define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn)
#else
#define memory_hotplug_max() memblock_end_of_DRAM()
#endif /* CONFIG_NEED_MULTIPLE_NODES */

4
arch/sh/include/asm/mmzone.h
View File

@ -9,10 +9,6 @@
extern struct pglist_data *node_data[];
#define NODE_DATA(nid) (node_data[nid])
#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
#define node_end_pfn(nid) (NODE_DATA(nid)->node_start_pfn + \
NODE_DATA(nid)->node_spanned_pages)
static inline int pfn_to_nid(unsigned long pfn)
{
int nid;

2
arch/sparc/include/asm/mmzone.h
View File

@ -8,8 +8,6 @@
extern struct pglist_data *node_data[];
#define NODE_DATA(nid) (node_data[nid])
#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
#define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn)
extern int numa_cpu_lookup_table[];
extern cpumask_t numa_cpumask_lookup_table[];

11
arch/tile/include/asm/mmzone.h
View File

@ -40,17 +40,6 @@ static inline int pfn_to_nid(unsigned long pfn)
return highbits_to_node[__pfn_to_highbits(pfn)];
}
/*
* Following are macros that each numa implmentation must define.
*/
#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
#define node_end_pfn(nid) \
({ \
pg_data_t *__pgdat = NODE_DATA(nid); \
__pgdat->node_start_pfn + __pgdat->node_spanned_pages; \
})
#define kern_addr_valid(kaddr) virt_addr_valid((void *)kaddr)
static inline int pfn_valid(int pfn)

11
arch/x86/include/asm/mmzone_32.h
View File

@ -48,17 +48,6 @@ static inline int pfn_to_nid(unsigned long pfn)
#endif
}
/*
* Following are macros that each numa implmentation must define.
*/
#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
#define node_end_pfn(nid) \
({ \
pg_data_t *__pgdat = NODE_DATA(nid); \
__pgdat->node_start_pfn + __pgdat->node_spanned_pages; \
})
static inline int pfn_valid(int pfn)
{
int nid = pfn_to_nid(pfn);

3
arch/x86/include/asm/mmzone_64.h
View File

@ -13,8 +13,5 @@ extern struct pglist_data *node_data[];
#define NODE_DATA(nid) (node_data[nid])
#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
#define node_end_pfn(nid) (NODE_DATA(nid)->node_start_pfn + \
NODE_DATA(nid)->node_spanned_pages)
#endif
#endif /* _ASM_X86_MMZONE_64_H */

7
include/linux/mmzone.h
View File

@ -647,6 +647,13 @@ typedef struct pglist_data {
#endif
#define nid_page_nr(nid, pagenr) pgdat_page_nr(NODE_DATA(nid),(pagenr))
#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
#define node_end_pfn(nid) ({\
pg_data_t *__pgdat = NODE_DATA(nid);\
__pgdat->node_start_pfn + __pgdat->node_spanned_pages;\
})
#include <linux/memory_hotplug.h>
extern struct mutex zonelists_mutex;