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authorTejun Heo <tj@kernel.org>2011-05-02 16:18:53 +0400
committerTejun Heo <tj@kernel.org>2011-05-02 16:18:53 +0400
commita4106eae650a4d5d30fcdd36d998edfa5ccb0ec4 (patch)
tree29da18fc58ff99a9427d5047936e71dad1ac40dd /arch/x86/include/asm/numa.h
parent299a180aec6a8ee3069cf0fe90d722ac20c1f837 (diff)
downloadlinux-a4106eae650a4d5d30fcdd36d998edfa5ccb0ec4.tar.xz
x86, NUMA: Move NUMA init logic from numa_64.c to numa.c
Move the generic 64bit NUMA init machinery from numa_64.c to numa.c. * node_data[], numa_mem_info and numa_distance * numa_add_memblk[_to](), numa_remove_memblk[_from]() * numa_set_distance() and friends * numa_init() and all the numa_meminfo handling helpers called from it * dummy_numa_init() * memory_add_physaddr_to_nid() A new function x86_numa_init() is added and the content of numa_64.c::initmem_init() is moved into it. initmem_init() now simply calls x86_numa_init(). Constants and numa_off declaration are moved from numa_{32|64}.h to numa.h. This is code reorganization and doesn't involve any functional change. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/numa.h')
-rw-r--r--arch/x86/include/asm/numa.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/include/asm/numa.h b/arch/x86/include/asm/numa.h
index db449c7d89b3..74540865dd83 100644
--- a/arch/x86/include/asm/numa.h
+++ b/arch/x86/include/asm/numa.h
@@ -9,6 +9,16 @@
#ifdef CONFIG_NUMA
#define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
+#define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT))
+
+/*
+ * Too small node sizes may confuse the VM badly. Usually they
+ * result from BIOS bugs. So dont recognize nodes as standalone
+ * NUMA entities that have less than this amount of RAM listed:
+ */
+#define NODE_MIN_SIZE (4*1024*1024)
+
+extern int numa_off;
/*
* __apicid_to_node[] stores the raw mapping between physical apicid and
@@ -68,4 +78,10 @@ static inline void numa_remove_cpu(int cpu) { }
void debug_cpumask_set_cpu(int cpu, int node, bool enable);
#endif
+#ifdef CONFIG_NUMA_EMU
+#define FAKE_NODE_MIN_SIZE ((u64)32 << 20)
+#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))
+void numa_emu_cmdline(char *);
+#endif /* CONFIG_NUMA_EMU */
+
#endif /* _ASM_X86_NUMA_H */