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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2011-06-16 04:28:07 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-06-27 17:13:09 -0400
commitc6830c22603aaecf65405af23f6da2d55892f9cb (patch)
tree19458ebc7c32bef8a4ed59630cabb5785b1bdc11 /arch/powerpc
parentaf4087e0e682df12bdffec5cfafc2fec9208716e (diff)
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>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/include/asm/mmzone.h7
1 files changed, 0 insertions, 7 deletions
diff --git a/arch/powerpc/include/asm/mmzone.h b/arch/powerpc/include/asm/mmzone.h
index fd3fd58bad84..7b589178be46 100644
--- a/arch/powerpc/include/asm/mmzone.h
+++ b/arch/powerpc/include/asm/mmzone.h
@@ -38,13 +38,6 @@ u64 memory_hotplug_max(void);
38#define memory_hotplug_max() memblock_end_of_DRAM() 38#define memory_hotplug_max() memblock_end_of_DRAM()
39#endif 39#endif
40 40
41/*
42 * Following are macros that each numa implmentation must define.
43 */
44
45#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
46#define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn)
47
48#else 41#else
49#define memory_hotplug_max() memblock_end_of_DRAM() 42#define memory_hotplug_max() memblock_end_of_DRAM()
50#endif /* CONFIG_NEED_MULTIPLE_NODES */ 43#endif /* CONFIG_NEED_MULTIPLE_NODES */