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authorDave Hansen <haveblue@us.ibm.com>2005-06-23 03:07:37 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-23 12:45:00 -0400
commit408fde81c1bff15c875a3618481e93a01dcc79ea (patch)
tree89b173c5cccd69a17aa64bff8916c54bdcb2d6fe /include/asm-ppc64/mmzone.h
parent29c31a3bf257e0723423f1f0f9afd1b840434c75 (diff)
[PATCH] remove non-DISCONTIG use of pgdat->node_mem_map
This patch effectively eliminates direct use of pgdat->node_mem_map outside of the DISCONTIG code. On a flat memory system, these fields aren't currently used, neither are they on a sparsemem system. There was also a node_mem_map(nid) macro on many architectures. Its use along with the use of ->node_mem_map itself was not consistent. It has been removed in favor of two new, more explicit, arch-independent macros: pgdat_page_nr(pgdat, pagenr) nid_page_nr(nid, pagenr) I called them "pgdat" and "nid" because we overload the term "node" to mean "NUMA node", "DISCONTIG node" or "pg_data_t" in very confusing ways. I believe the newer names are much clearer. These macros can be overridden in the sparsemem case with a theoretically slower operation using node_start_pfn and pfn_to_page(), instead. We could make this the only behavior if people want, but I don't want to change too much at once. One thing at a time. This patch removes more code than it adds. Compile tested on alpha, alpha discontig, arm, arm-discontig, i386, i386 generic, NUMAQ, Summit, ppc64, ppc64 discontig, and x86_64. Full list here: http://sr71.net/patches/2.6.12/2.6.12-rc1-mhp2/configs/ Boot tested on NUMAQ, x86 SMP and ppc64 power4/5 LPARs. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Martin J. Bligh <mbligh@aracnet.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-ppc64/mmzone.h')
-rw-r--r--include/asm-ppc64/mmzone.h3
1 files changed, 1 insertions, 2 deletions
diff --git a/include/asm-ppc64/mmzone.h b/include/asm-ppc64/mmzone.h
index 0619a41a3c9d..cbfc5ecfe875 100644
--- a/include/asm-ppc64/mmzone.h
+++ b/include/asm-ppc64/mmzone.h
@@ -65,7 +65,6 @@ static inline int pa_to_nid(unsigned long pa)
65 */ 65 */
66#define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr)) 66#define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr))
67 67
68#define node_mem_map(nid) (NODE_DATA(nid)->node_mem_map)
69#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) 68#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
70#define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn) 69#define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn)
71 70
@@ -76,7 +75,7 @@ static inline int pa_to_nid(unsigned long pa)
76#define discontigmem_pfn_to_page(pfn) \ 75#define discontigmem_pfn_to_page(pfn) \
77({ \ 76({ \
78 unsigned long __tmp = pfn; \ 77 unsigned long __tmp = pfn; \
79 (node_mem_map(pfn_to_nid(__tmp)) + \ 78 (NODE_DATA(pfn_to_nid(__tmp))->node_mem_map + \
80 node_localnr(__tmp, pfn_to_nid(__tmp))); \ 79 node_localnr(__tmp, pfn_to_nid(__tmp))); \
81}) 80})
82 81