[PATCH 22/33] x86-64, NUMA: Add common find_node_by_addr()

Tejun Heo
2011-02-16T12:22:05Z

srat_64.c and amdtopology_64.c had their own versions of
find_node_by_addr() which were basically the same. Add common one in
numa_64.c and remove the duplicates.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Shaohui Zheng <shaohui.zheng@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/include/asm/numa_64.h | 1 +
arch/x86/mm/amdtopology_64.c | 13 -------------
arch/x86/mm/numa_64.c | 19 +++++++++++++++++++
arch/x86/mm/srat_64.c | 18 ------------------
4 files changed, 20 insertions(+), 31 deletions(-)

diff --git a/arch/x86/include/asm/numa_64.h b/arch/x86/include/asm/numa_64.h
index fbc9d33..867d41b 100644
--- a/arch/x86/include/asm/numa_64.h
+++ b/arch/x86/include/asm/numa_64.h
@@ -36,6 +36,7 @@ extern int __init numa_add_memblk(int nodeid, u64 start, u64 end);
#define FAKE_NODE_MIN_SIZE ((u64)32 << 20)
#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))
void numa_emu_cmdline(char *);
+int __init find_node_by_addr(unsigned long addr);
#endif /* CONFIG_NUMA_EMU */
#else
static inline int numa_cpu_node(int cpu) { return NUMA_NO_NODE; }
diff --git a/arch/x86/mm/amdtopology_64.c b/arch/x86/mm/amdtopology_64.c
index 90cf297..8f7a5eb 100644
--- a/arch/x86/mm/amdtopology_64.c
+++ b/arch/x86/mm/amdtopology_64.c
@@ -205,19 +205,6 @@ static s16 fake_apicid_to_node[MAX_LOCAL_APIC] __initdata = {
[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
};

-static int __init find_node_by_addr(unsigned long addr)
-{
- int ret = NUMA_NO_NODE;
- int i;
-
- for (i = 0; i < 8; i++)
- if (addr >= numa_nodes[i].start && addr < numa_nodes[i].end) {
- ret = i;
- break;
- }
- return ret;
-}
-
/*
* For NUMA emulation, fake proximity domain (_PXM) to node id mappings must be
* setup to represent the physical topology but reflect the emulated
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index 20aa1d3..681bc0d 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -430,6 +430,25 @@ void __init numa_emu_cmdline(char *str)
cmdline = str;
}

+int __init find_node_by_addr(unsigned long addr)
+{
+ int ret = NUMA_NO_NODE;
+ int i;
+
+ for_each_node_mask(i, mem_nodes_parsed) {
+ /*
+ * Find the real node that this emulated node appears on. For
+ * the sake of simplicity, we only use a real node's starting
+ * address to determine which emulated node it appears on.
+ */
+ if (addr >= numa_nodes[i].start && addr < numa_nodes[i].end) {
+ ret = i;
+ break;
+ }
+ }
+ return ret;
+}
+
static int __init setup_physnodes(unsigned long start, unsigned long end)
{
int ret = 0;
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index d56eff8..51d0733 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -277,24 +277,6 @@ static int fake_node_to_pxm_map[MAX_NUMNODES] __initdata = {
static s16 fake_apicid_to_node[MAX_LOCAL_APIC] __initdata = {
[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
};
-static int __init find_node_by_addr(unsigned long addr)
-{
- int ret = NUMA_NO_NODE;
- int i;
-
- for_each_node_mask(i, mem_nodes_parsed) {
- /*
- * Find the real node that this emulated node appears on. For
- * the sake of simplicity, we only use a real node's starting
- * address to determine which emulated node it appears on.
- */
- if (addr >= numa_nodes[i].start && addr < numa_nodes[i].end) {
- ret = i;
- break;
- }
- }
- return ret;
-}

/*
* In NUMA emulation, we need to setup proximity domain (_PXM) to node ID
--
1.7.1