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Diffstat (limited to 'arch/s390/kernel/topology.c')
-rw-r--r--arch/s390/kernel/topology.c27
1 files changed, 10 insertions, 17 deletions
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 05151e06c388..54d93f4b6818 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -17,6 +17,7 @@
#include <linux/cpu.h>
#include <linux/smp.h>
#include <linux/mm.h>
+#include <asm/sysinfo.h>
#define PTF_HORIZONTAL (0UL)
#define PTF_VERTICAL (1UL)
@@ -44,9 +45,6 @@ static struct mask_info book_info;
cpumask_t cpu_book_map[NR_CPUS];
unsigned char cpu_book_id[NR_CPUS];
-/* smp_cpu_state_mutex must be held when accessing this array */
-int cpu_polarization[NR_CPUS];
-
static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu)
{
cpumask_t mask;
@@ -75,10 +73,7 @@ static struct mask_info *add_cpus_to_mask(struct topology_cpu *tl_cpu,
{
unsigned int cpu;
- for (cpu = find_first_bit(&tl_cpu->mask[0], TOPOLOGY_CPU_BITS);
- cpu < TOPOLOGY_CPU_BITS;
- cpu = find_next_bit(&tl_cpu->mask[0], TOPOLOGY_CPU_BITS, cpu + 1))
- {
+ for_each_set_bit(cpu, &tl_cpu->mask[0], TOPOLOGY_CPU_BITS) {
unsigned int rcpu;
int lcpu;
@@ -94,7 +89,7 @@ static struct mask_info *add_cpus_to_mask(struct topology_cpu *tl_cpu,
} else {
cpu_core_id[lcpu] = core->id;
}
- cpu_set_polarization(lcpu, tl_cpu->pp);
+ smp_cpu_set_polarization(lcpu, tl_cpu->pp);
}
}
return core;
@@ -201,7 +196,7 @@ static void topology_update_polarization_simple(void)
mutex_lock(&smp_cpu_state_mutex);
for_each_possible_cpu(cpu)
- cpu_set_polarization(cpu, POLARIZATION_HRZ);
+ smp_cpu_set_polarization(cpu, POLARIZATION_HRZ);
mutex_unlock(&smp_cpu_state_mutex);
}
@@ -231,7 +226,7 @@ int topology_set_cpu_management(int fc)
if (rc)
return -EBUSY;
for_each_possible_cpu(cpu)
- cpu_set_polarization(cpu, POLARIZATION_UNKNOWN);
+ smp_cpu_set_polarization(cpu, POLARIZATION_UNKNOWN);
return rc;
}
@@ -250,12 +245,10 @@ static void update_cpu_core_map(void)
void store_topology(struct sysinfo_15_1_x *info)
{
- int rc;
-
- rc = stsi(info, 15, 1, 3);
- if (rc != -ENOSYS)
- return;
- stsi(info, 15, 1, 2);
+ if (topology_max_mnest >= 3)
+ stsi(info, 15, 1, 3);
+ else
+ stsi(info, 15, 1, 2);
}
int arch_update_cpu_topology(void)
@@ -415,7 +408,7 @@ static ssize_t cpu_polarization_show(struct device *dev,
ssize_t count;
mutex_lock(&smp_cpu_state_mutex);
- switch (cpu_read_polarization(cpu)) {
+ switch (smp_cpu_get_polarization(cpu)) {
case POLARIZATION_HRZ:
count = sprintf(buf, "horizontal\n");
break;