Messages in this thread Patch in this message | | | Date | Tue, 31 Oct 2006 21:34:32 -0800 | From | Chris Wright <> | Subject | [PATCH 52/61] Reintroduce NODES_SPAN_OTHER_NODES for powerpc |
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-stable review patch. If anyone has any objections, please let us know. ------------------
From: Andy Whitcroft <apw@shadowen.org>
Revert "[PATCH] Remove SPAN_OTHER_NODES config definition" This reverts commit f62859bb6871c5e4a8e591c60befc8caaf54db8c. Revert "[PATCH] mm: remove arch independent NODES_SPAN_OTHER_NODES" This reverts commit a94b3ab7eab4edcc9b2cb474b188f774c331adf7.
Also update the comments to indicate that this is still required and where its used.
Signed-off-by: Andy Whitcroft <apw@shadowen.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Mike Kravetz <kravetz@us.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Will Schmidt <will_schmidt@vnet.ibm.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Chris Wright <chrisw@sous-sol.org> --- arch/powerpc/Kconfig | 9 +++++++++ arch/powerpc/configs/pseries_defconfig | 1 + include/linux/mmzone.h | 6 ++++++ mm/page_alloc.c | 2 ++ 4 files changed, 18 insertions(+)
--- linux-2.6.18.1.orig/arch/powerpc/Kconfig +++ linux-2.6.18.1/arch/powerpc/Kconfig @@ -729,6 +729,15 @@ config ARCH_MEMORY_PROBE def_bool y depends on MEMORY_HOTPLUG +# Some NUMA nodes have memory ranges that span +# other nodes. Even though a pfn is valid and +# between a node's start and end pfns, it may not +# reside on that node. See memmap_init_zone() +# for details. +config NODES_SPAN_OTHER_NODES + def_bool y + depends on NEED_MULTIPLE_NODES + config PPC_64K_PAGES bool "64k page size" depends on PPC64 --- linux-2.6.18.1.orig/arch/powerpc/configs/pseries_defconfig +++ linux-2.6.18.1/arch/powerpc/configs/pseries_defconfig @@ -184,6 +184,7 @@ CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_MIGRATION=y CONFIG_RESOURCES_64BIT=y CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID=y +CONFIG_NODES_SPAN_OTHER_NODES=y # CONFIG_PPC_64K_PAGES is not set CONFIG_SCHED_SMT=y CONFIG_PROC_DEVICETREE=y --- linux-2.6.18.1.orig/include/linux/mmzone.h +++ linux-2.6.18.1/include/linux/mmzone.h @@ -632,6 +632,12 @@ void sparse_init(void); #define sparse_index_init(_sec, _nid) do {} while (0) #endif /* CONFIG_SPARSEMEM */ +#ifdef CONFIG_NODES_SPAN_OTHER_NODES +#define early_pfn_in_nid(pfn, nid) (early_pfn_to_nid(pfn) == (nid)) +#else +#define early_pfn_in_nid(pfn, nid) (1) +#endif + #ifndef early_pfn_valid #define early_pfn_valid(pfn) (1) #endif --- linux-2.6.18.1.orig/mm/page_alloc.c +++ linux-2.6.18.1/mm/page_alloc.c @@ -1673,6 +1673,8 @@ void __meminit memmap_init_zone(unsigned for (pfn = start_pfn; pfn < end_pfn; pfn++) { if (!early_pfn_valid(pfn)) continue; + if (!early_pfn_in_nid(pfn, nid)) + continue; page = pfn_to_page(pfn); set_page_links(page, zone, nid, pfn); init_page_count(page); -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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