From: Jesse Larrew <[email protected]> The following patch adds vdso_getcpu_init(), which stores the NUMA node for a cpu in SPRG3:
http://patchwork.ozlabs.org/patch/169070/ This patch ensures that this information is also updated when the NUMA affinity of a cpu changes. Signed-off-by: Nathan Fontenot <[email protected]> --- arch/powerpc/mm/numa.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) Index: powerpc/arch/powerpc/mm/numa.c =================================================================== --- powerpc.orig/arch/powerpc/mm/numa.c 2013-03-08 19:57:47.000000000 -0600 +++ powerpc/arch/powerpc/mm/numa.c 2013-03-08 19:57:59.000000000 -0600 @@ -30,6 +30,7 @@ #include <asm/paca.h> #include <asm/hvcall.h> #include <asm/setup.h> +#include <asm/vdso.h> static int numa_enabled = 1; @@ -1426,6 +1427,7 @@ unregister_cpu_under_node(update->cpu, update->old_nid); unmap_cpu_from_node(update->cpu); map_cpu_to_node(update->cpu, update->new_nid); + vdso_getcpu_init(); register_cpu_under_node(update->cpu, update->new_nid); return 0; @@ -1440,8 +1442,11 @@ int cpu, changed = 0; struct topology_update_data update; unsigned int associativity[VPHN_ASSOC_BUFSIZE] = {0}; + cpumask_t updated_cpu; struct device *dev; + cpumask_clear(&updated_cpu); + for_each_cpu(cpu, &cpu_associativity_changes_mask) { update.cpu = cpu; vphn_get_associativity(cpu, associativity); @@ -1451,7 +1456,8 @@ update.new_nid = first_online_node; update.old_nid = numa_cpu_lookup_table[cpu]; - stop_machine(update_cpu_topology, &update, cpu_online_mask); + cpumask_set_cpu(cpu, &updated_cpu); + stop_machine(update_cpu_topology, &update, &updated_cpu); dev = get_cpu_device(cpu); if (dev) kobject_uevent(&dev->kobj, KOBJ_CHANGE); _______________________________________________ Linuxppc-dev mailing list [email protected] https://lists.ozlabs.org/listinfo/linuxppc-dev
