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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2016-12-02 10:38:37 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-12-07 07:23:16 +0100 |
| commit | 30fc4ca2a8ab508d160a917b89b7e1c27f893354 (patch) | |
| tree | 90b80934e4e7189eef1ef0b3f4c17eb5f7af9588 /arch/s390/kernel/topology.c | |
| parent | af51160ebd3cc1c8bf0d37a48f13ac0dbe8a6e5f (diff) | |
| download | linux-0-day-30fc4ca2a8ab508d160a917b89b7e1c27f893354.tar.gz linux-0-day-30fc4ca2a8ab508d160a917b89b7e1c27f893354.tar.xz | |
s390/topology: use cpu_topology array instead of per cpu variable
CPU topology information like cpu to node mapping must be setup in
setup_arch already. Topology information is currently made available
with a per cpu variable; this however will not work when the
initialization will be moved to setup_arch, since the generic percpu
setup will be done much later.
Therefore convert back to a cpu_topology array.
Reviewed-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/topology.c')
| -rw-r--r-- | arch/s390/kernel/topology.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index 8705ee66c0874..7169d112c91a4 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -41,15 +41,15 @@ static bool topology_enabled = true; static DECLARE_WORK(topology_work, topology_work_fn); /* - * Socket/Book linked lists and per_cpu(cpu_topology) updates are + * Socket/Book linked lists and cpu_topology updates are * protected by "sched_domains_mutex". */ static struct mask_info socket_info; static struct mask_info book_info; static struct mask_info drawer_info; -DEFINE_PER_CPU(struct cpu_topology_s390, cpu_topology); -EXPORT_PER_CPU_SYMBOL_GPL(cpu_topology); +struct cpu_topology_s390 cpu_topology[NR_CPUS]; +EXPORT_SYMBOL_GPL(cpu_topology); static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu) { @@ -97,7 +97,7 @@ static void add_cpus_to_mask(struct topology_core *tl_core, if (lcpu < 0) continue; for (i = 0; i <= smp_cpu_mtid; i++) { - topo = &per_cpu(cpu_topology, lcpu + i); + topo = &cpu_topology[lcpu + i]; topo->drawer_id = drawer->id; topo->book_id = book->id; topo->socket_id = socket->id; @@ -220,7 +220,7 @@ static void update_cpu_masks(void) int cpu; for_each_possible_cpu(cpu) { - topo = &per_cpu(cpu_topology, cpu); + topo = &cpu_topology[cpu]; topo->thread_mask = cpu_thread_map(cpu); topo->core_mask = cpu_group_map(&socket_info, cpu); topo->book_mask = cpu_group_map(&book_info, cpu); @@ -394,23 +394,23 @@ int topology_cpu_init(struct cpu *cpu) static const struct cpumask *cpu_thread_mask(int cpu) { - return &per_cpu(cpu_topology, cpu).thread_mask; + return &cpu_topology[cpu].thread_mask; } const struct cpumask *cpu_coregroup_mask(int cpu) { - return &per_cpu(cpu_topology, cpu).core_mask; + return &cpu_topology[cpu].core_mask; } static const struct cpumask *cpu_book_mask(int cpu) { - return &per_cpu(cpu_topology, cpu).book_mask; + return &cpu_topology[cpu].book_mask; } static const struct cpumask *cpu_drawer_mask(int cpu) { - return &per_cpu(cpu_topology, cpu).drawer_mask; + return &cpu_topology[cpu].drawer_mask; } static int __init early_parse_topology(char *p) |