[PATCH/RFC 3/6] numa: ia64: use generic percpu var numa_node_id() implementation

Lee Schermerhorn
2009-11-13T21:12:59Z

Against: 2.6.32-rc5-mmotm-091101-1001

ia64: Use generic percpu implementation of numa_node_id()
+ intialize per cpu 'numa_node'
+ remove ia64 cpu_to_node() macro; use generic
+ define CONFIG_USE_PERCPU_NUMA_NODE_ID when NUMA configured

Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>

New in V2

---

arch/ia64/Kconfig | 4 ++++
arch/ia64/include/asm/topology.h | 5 -----
arch/ia64/kernel/smpboot.c | 6 ++++++
3 files changed, 10 insertions(+), 5 deletions(-)

Index: linux-2.6.32-rc5-mmotm-091101-1001/arch/ia64/kernel/smpboot.c
===================================================================
--- linux-2.6.32-rc5-mmotm-091101-1001.orig/arch/ia64/kernel/smpboot.c 2009-11-11 11:43:47.000000000 -0500
+++ linux-2.6.32-rc5-mmotm-091101-1001/arch/ia64/kernel/smpboot.c 2009-11-11 12:05:42.000000000 -0500
@@ -391,6 +391,11 @@ smp_callin (void)

fix_b0_for_bsp();

+ /*
+ * numa_node_id() works after this.
+ */
+ set_numa_node(cpu_to_node_map[cpuid]);
+
ipi_call_lock_irq();
spin_lock(&vector_lock);
/* Setup the per cpu irq handling data structures */
@@ -637,6 +642,7 @@ void __devinit smp_prepare_boot_cpu(void
{
cpu_set(smp_processor_id(), cpu_online_map);
cpu_set(smp_processor_id(), cpu_callin_map);
+ set_numa_node(cpu_to_node_map[smp_processor_id()]);
per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE;
paravirt_post_smp_prepare_boot_cpu();
}
Index: linux-2.6.32-rc5-mmotm-091101-1001/arch/ia64/include/asm/topology.h
===================================================================
--- linux-2.6.32-rc5-mmotm-091101-1001.orig/arch/ia64/include/asm/topology.h 2009-11-11 11:43:47.000000000 -0500
+++ linux-2.6.32-rc5-mmotm-091101-1001/arch/ia64/include/asm/topology.h 2009-11-11 12:05:42.000000000 -0500
@@ -26,11 +26,6 @@
#define RECLAIM_DISTANCE 15

/*
- * Returns the number of the node containing CPU 'cpu'
- */
-#define cpu_to_node(cpu) (int)(cpu_to_node_map[cpu])
-
-/*
* Returns a bitmask of CPUs on Node 'node'.
*/
#define cpumask_of_node(node) (&node_to_cpu_mask[node])
Index: linux-2.6.32-rc5-mmotm-091101-1001/arch/ia64/Kconfig
===================================================================
--- linux-2.6.32-rc5-mmotm-091101-1001.orig/arch/ia64/Kconfig 2009-11-02 15:51:36.000000000 -0500
+++ linux-2.6.32-rc5-mmotm-091101-1001/arch/ia64/Kconfig 2009-11-11 12:09:13.000000000 -0500
@@ -495,6 +495,10 @@ config HAVE_ARCH_NODEDATA_EXTENSION
def_bool y
depends on NUMA

+config USE_PERCPU_NUMA_NODE_ID
+ def_bool y
+ depends on NUMA
+
config ARCH_PROC_KCORE_TEXT
def_bool y
depends on PROC_KCORE