diff options
author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2011-06-16 04:28:07 -0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-06-27 17:13:09 -0400 |
commit | c6830c22603aaecf65405af23f6da2d55892f9cb (patch) | |
tree | 19458ebc7c32bef8a4ed59630cabb5785b1bdc11 /arch/alpha | |
parent | af4087e0e682df12bdffec5cfafc2fec9208716e (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/alpha')
-rw-r--r-- | arch/alpha/include/asm/mmzone.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/alpha/include/asm/mmzone.h b/arch/alpha/include/asm/mmzone.h index 8af56ce346ad..445dc42e0334 100644 --- a/arch/alpha/include/asm/mmzone.h +++ b/arch/alpha/include/asm/mmzone.h | |||
@@ -56,7 +56,6 @@ PLAT_NODE_DATA_LOCALNR(unsigned long p, int n) | |||
56 | * Given a kernel address, find the home node of the underlying memory. | 56 | * Given a kernel address, find the home node of the underlying memory. |
57 | */ | 57 | */ |
58 | #define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr)) | 58 | #define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr)) |
59 | #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) | ||
60 | 59 | ||
61 | /* | 60 | /* |
62 | * Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory | 61 | * Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory |