[PATCH] pgdat allocation for new node add (refresh node_data[])
Refresh NODE_DATA() for generic archs. In this case, NODE_DATA(nid) == node_data[nid]. node_data[] is array of address of pgdat. So, refresh is quite simple. Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: "Brown, Len" <len.brown@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -374,6 +374,10 @@ config HAVE_ARCH_EARLY_PFN_TO_NID
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def_bool y
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depends on NEED_MULTIPLE_NODES
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config HAVE_ARCH_NODEDATA_EXTENSION
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def_bool y
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depends on NUMA
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config IA32_SUPPORT
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bool "Support for Linux/x86 binaries"
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help
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@ -91,6 +91,9 @@ static inline pg_data_t *arch_alloc_nodedata(int nid)
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static inline void arch_free_nodedata(pg_data_t *pgdat)
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{
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}
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static inline void arch_refresh_nodedata(int nid, pg_data_t *pgdat)
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{
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}
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#else /* CONFIG_HAVE_ARCH_NODEDATA_EXTENSION */
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@ -114,6 +117,12 @@ static inline void arch_free_nodedata(pg_data_t *pgdat)
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*/
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#define generic_free_nodedata(pgdat) kfree(pgdat)
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extern pg_data_t *node_data[];
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static inline void arch_refresh_nodedata(int nid, pg_data_t *pgdat)
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{
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node_data[nid] = pgdat;
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}
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#else /* !CONFIG_NUMA */
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/* never called */
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@ -125,6 +134,9 @@ static inline pg_data_t *generic_alloc_nodedata(int nid)
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static inline void generic_free_nodedata(pg_data_t *pgdat)
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{
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}
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static inline void arch_refresh_nodedata(int nid, pg_data_t *pgdat)
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{
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}
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#endif /* CONFIG_NUMA */
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#endif /* CONFIG_HAVE_ARCH_NODEDATA_EXTENSION */
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